阅读说明：本技术 车窗电机控制电路的控制方法、装置、存储介质及系统 (Control method and device of vehicle window motor control circuit, storage medium and system ) 是由 贾和平 彭玲 于 2021-08-13 设计创作，主要内容包括：本发明提供一种车窗电机控制电路的控制方法、装置、存储介质及系统,方法包括：获取任一车窗电机发送的故障信号,所述故障信号为所述车窗电机在检查到其工作电流大于阈值时发出；根据所述故障信号,确定所述车窗电机对应的目标控制电路；控制所述目标控制电路的继电器拉高,以切断电流监测装置与所述车窗电机的工作回路的连接。上述车窗电机控制电路的控制方法、装置、存储介质及系统,通过在车窗电路中设置电流监测装置检测电路电流情况并根据异常电流控制电路中多个继电器拉高或拉低,更改电流回路,避免电路监测装置持续监测到异常电流,避免了唤醒车辆网络,从而避免车辆馈电,保障车窗电机和车辆正常工作。(The invention provides a control method, a control device, a storage medium and a control system of a vehicle window motor control circuit, wherein the method comprises the following steps: acquiring a fault signal sent by any window motor, wherein the fault signal is sent when the window motor detects that the working current of the window motor is greater than a threshold value; determining a target control circuit corresponding to the window motor according to the fault signal; and controlling a relay of the target control circuit to be pulled high so as to cut off the connection between the current monitoring device and a working loop of the vehicle window motor. According to the control method, the control device, the storage medium and the control system of the vehicle window motor control circuit, the current monitoring device is arranged in the vehicle window circuit to detect the current condition of the circuit, and the current loop is changed according to the pulling-up or pulling-down of the plurality of relays in the abnormal current control circuit, so that the circuit monitoring device is prevented from continuously monitoring the abnormal current, a vehicle network is prevented from being awakened, vehicle feeding is avoided, and the normal work of the vehicle window motor and the vehicle is guaranteed.)

1. A method of controlling a window motor control circuit, the method comprising:

acquiring a fault signal sent by any window motor, wherein the fault signal is sent when the window motor detects that the working current of the window motor is greater than a threshold value;

determining a target control circuit corresponding to the window motor according to the fault signal;

and controlling a relay of the target control circuit to be pulled high so as to cut off the connection between the current monitoring device and a working loop of the vehicle window motor.

2. The control method of the window motor control circuit according to claim 1, further comprising, after the step of acquiring the failure signal transmitted by any one of the window motors:

and when a fault signal sent by any one window motor is acquired, storing a fault code.

3. The control method of the window motor control circuit according to claim 2, further comprising, after the step of storing the fault code:

and when the whole vehicle is powered on, the fault code is sent to the whole vehicle controller through the CAN network.

4. The control method of the window motor control circuit according to claim 1, further comprising, after the step of controlling the relay pull-up of the target control circuit:

controlling a relay of the target control circuit to be pulled down at preset time intervals, and judging whether the fault signal is received again;

and if so, controlling the relay of the target control circuit to pull up again.

5. The control method of the window motor control circuit according to claim 1, further comprising, after the step of controlling the relay pull-up of the target control circuit:

controlling a relay of the target control circuit to be pulled down at preset time intervals, and judging whether the fault signal is received again;

if not, storing the fault code, and setting the value of a state bit of the fault code to be 1, wherein the state bit is used for indicating whether the window motor automatically repairs the fault or not.

6. The control method of the window motor control circuit according to claim 1, characterized by further comprising:

and controlling the window motor to enter a low power consumption state, and controlling the window motor to enter a deep sleep state after a preset time.

7. The control method of the window motor control circuit according to claim 4, characterized by further comprising: when the whole vehicle is powered on, detecting the motor circuit and judging whether to receive the fault signal again;

if yes, continuing to pull up the relay;

if not, the relay is controlled to be pulled down, and the motor is recovered to work normally.

8. A control device of a window motor control circuit, characterized by comprising:

the signal acquisition module is used for acquiring a fault signal sent by any window motor, wherein the fault signal is sent when the window motor detects that the working current of the window motor is greater than a threshold value;

the fault circuit determination module is used for determining a target control circuit corresponding to the vehicle window motor according to the fault signal;

and the circuit control module is used for controlling the relay of the target control circuit to be pulled up so as to cut off the connection between the current monitoring device and the working circuit of the vehicle window motor.

9. A storable medium for a window motor control circuit, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out a method for a window motor control circuit according to any one of claims 1 to 7.

10. A control system for a window motor control circuit, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor when executing the program implementing a method for a window motor control circuit as claimed in any one of claims 1 to 7.

Technical Field

The invention relates to the technical field of circuits, in particular to a control method, a control device, a storage medium and a control system of a vehicle window motor control circuit.

Background

With the continuous improvement of living standard, the automobile is an indispensable travel vehicle for people. Automobile manufacturers are increasingly pursuing automobile comfort and multifunctional development and perfection, so that automobiles are more convenient for people to live.

The anti-pinch module of the car window is an important component in the whole car of the car, and the anti-pinch function of the anti-pinch module of the car window becomes one of the standard functions of the car and is also regarded as a necessary comfortable function by consumers. The whole system is composed of a window lifter assembly, a control module, a circuit and CAN communication interaction of modules related to the whole vehicle.

In the prior art, the condition that the vehicle window control module triggers the whole vehicle to wake up is three: IGN awakening, CAN network signal awakening and current awakening detected by a motor drive PIN. The motor drive PIN detects that the current is awakened when the anti-pinch module of the vehicle is contacted with the current, and the anti-pinch module is triggered to work all the time and awaken the whole vehicle. When a user washes a vehicle, the window is filled with water or the line is damaged, the line of the window motor has a short-circuit fault, and the motor wakes up the whole vehicle after detecting abnormal current, so that the whole vehicle network cannot enter a dormant state, the whole vehicle feed is finally triggered, the vehicle starting is influenced, and the inconvenience is brought to the user.

Disclosure of Invention

Based on this, the invention aims to provide a control method, a control device, a storage medium and a control system for a vehicle window motor control circuit, which are used for solving the problem that in the prior art, a vehicle cannot enter a dormant state due to a short circuit or a circuit damage of a vehicle window motor circuit, and finally the vehicle feeding is triggered to influence the vehicle starting.

A control method of a window motor control circuit, comprising:

acquiring a fault signal sent by any window motor, wherein the fault signal is sent when the window motor detects that the working current of the window motor is greater than a threshold value;

determining a target control circuit corresponding to the window motor according to the fault signal;

and controlling a relay of the target control circuit to be pulled high so as to cut off the connection between the current monitoring device and a working loop of the vehicle window motor.

According to the control method of the window motor control circuit, the fault signal sent by any window motor is obtained, the fault signal is sent when the window motor detects that the working current of the window motor is larger than the threshold value, the target control circuit where the window motor is located is determined according to the fault signal, the relay of the target control circuit is controlled to be pulled high, the connection between the current monitoring device and the working circuit of the window motor is cut off, the current monitoring device cannot detect abnormal current, the CAN network and other modules of a vehicle cannot be awakened, and the problem that the vehicle cannot enter a dormant state to finally trigger the whole vehicle feed due to the fact that the line of the window motor is short-circuited or the line is damaged in the prior art and the vehicle starting is influenced is solved.

The control method of the window motor control circuit according to the above embodiment of the present invention may further have the following additional technical features:

further, after the step of acquiring the fault signal sent by any one of the window motors, the method further comprises the following steps:

and when a fault signal sent by any one window motor is acquired, storing a fault code.

Further, after the step of storing the fault code, the method further includes:

and when the whole vehicle is powered on, the fault code is sent to the whole vehicle controller through the CAN network.

Further, after the step of controlling the relay of the target control circuit to be pulled up, the method further includes:

controlling a relay of the target control circuit to be pulled down at preset time intervals, and judging whether the fault signal is received again;

and if so, controlling the relay of the target control circuit to pull up again.

Further, after the step of controlling the relay of the target control circuit to be pulled up, the method further includes:

controlling a relay of the target control circuit to be pulled down at preset time intervals, and judging whether the fault signal is received again;

if not, storing the fault code, and setting the value of a state bit of the fault code to be 1, wherein the state bit is used for indicating whether the window motor automatically repairs the fault or not.

Further, the method also comprises the following steps: and controlling the window motor to enter a low power consumption state, and controlling the window motor to enter a deep sleep state after a preset time.

Further, the method also comprises the following steps: when a power supply is accessed or a CAN network signal is received, the whole vehicle controller is awakened;

and when any window motor detects abnormal current, closing and awakening the whole vehicle controller.

Further, the method also comprises the following steps: when the whole vehicle is powered on, detecting the motor circuit and judging whether to receive the fault signal again;

if yes, continuing to pull up the relay;

if not, the relay is controlled to be pulled down, and the motor is recovered to work normally.

Another aspect of the present invention provides a control apparatus for a window motor control circuit, the control apparatus including:

the signal acquisition module is used for acquiring a fault signal sent by any window motor, wherein the fault signal is sent when the window motor detects that the working current of the window motor is greater than a threshold value;

the fault circuit determination module is used for determining a target control circuit corresponding to the vehicle window motor according to the fault signal;

and the circuit control module is used for controlling the relay of the target control circuit to be pulled up so as to cut off the connection between the current monitoring device and the working circuit of the vehicle window motor.

Above-mentioned window motor control circuit's controlling means, through the fault signal who obtains arbitrary window motor and send, fault signal sends when checking that its operating current is greater than the threshold value for window motor, according to fault signal, confirms the target control circuit at window motor place to control target control circuit's relay is pulled high, cut off current monitoring device with window motor's work return circuit's connection, current monitoring device CAN't detect abnormal current, thereby CAN't awaken up other modules of CAN network and vehicle, solved among the prior art because of window motor circuit short circuit or circuit damage cause the unable dormancy state of entering of vehicle and finally trigger whole car feed, influence the problem that the vehicle started.

In another aspect, the present invention further provides a storable medium for a window motor control circuit, on which a computer program is stored, which program, when executed by a processor, implements the method of the window motor control circuit described above.

In another aspect, the present invention further provides a control system of a window motor control circuit, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the method of the window motor control circuit is implemented.

Drawings

Fig. 1 is a circuit diagram of a window driving motor according to an embodiment of the present invention;

fig. 2 is a flowchart of a control method of a window motor control circuit according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a control device of a vehicle window motor control circuit according to a second embodiment of the present invention;

the following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element, directly connected to the other element, or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The circuit provided by the present embodiment is explained below:

referring to the circuit diagram of the driving motor shown in fig. 1, the left side of the driving circuit diagram is the driving motor, the upper and lower ends of the driving motor are respectively connected to PIN1 and PIN5, PIN1 is connected to KL30, and KL30 provides a circuit power supply, wherein the input power voltage is 12V; the circuit is also provided with a relay PIN3 and a relay PIN4, the relay PIN3 and the relay PIN4 can be attracted up and down, the current direction of the circuit can be controlled by attracting the relay PIN3 and the relay PIN4 to be pulled up or down, and a sampling resistor R62 is connected in series below the relay PIN3 and the relay PIN4, wherein the sampling resistor is used for converting the current in the circuit into a voltage signal for measurement; a current monitoring device is further arranged on a circuit 7 of the relay and the sampling resistor, the current monitoring device is used for monitoring whether abnormal large current passes through the circuit or not, correspondingly feeding back to the vehicle MCU, controlling the relay PIN3 and the relay PIN4 to be pulled up or pulled down, the large current can be connected to the underground after passing through the sampling resistor R62, and protecting the safety of a circuit and equipment; the driving motor controls the pulling-up and pulling-down of the PIN1 and the PIN5, and controls the attraction of the relay PIN3 and the PIN4 to form different closed loops, and the motor realizes positive and negative rotation according to different directions of current passing through the motor, namely the ascending or descending of a car window.

In a general window circuit, when a vehicle is in a sleep state, when a PIN3 is in a short circuit with respect to a power supply, a large current passes through a PIN3 → 7 → R62 → 9, and 9 is a grounding end, and at the moment, after a current monitoring device K2-9 detects the large current, a vehicle MCU immediately pulls down PIN1 and PIN5 through a driving motor, controls a relay PIN3 and a PIN4 to be pulled up, and protects a sampling resistor R62 after the large current is separated. And meanwhile, the APM is awakened, so that the network is awakened, other modules are awakened to work simultaneously after the vehicle network is awakened, and the vehicle continuously consumes power and causes vehicle feed.

Pulling the PIN1 and the PIN5 down for 10S and then pulling the PIN to be high, detecting the line current again by the current monitoring device K2-9, pulling the PIN1 and the PIN5 down for 10S again if the large current is continuously detected, and detecting the line current again; the cycle repeats until K2-9 detects a low voltage and stops pulling low.

Example one

Referring to fig. 2, based on the above circuit analysis, the control method of the window motor control circuit according to the embodiment of the present invention includes the following steps:

s11: and acquiring a fault signal sent by any window motor, wherein the fault signal is sent when the window motor detects that the working current of the window motor is greater than a threshold value.

When the vehicle is in a dormant state, the window is filled with water or a circuit is broken down, the motor cannot work normally, a large current passes through a motor circuit, and when the monitored current exceeds a preset value, the motor sends a fault signal.

S12: and when a fault signal sent by any one window motor is acquired, storing a fault code.

The fault code is correspondingly analyzed according to the fault signal of the vehicle, and the fault code is used for recording the abnormal state of the vehicle, so that the vehicle fault can be conveniently checked and maintained after the vehicle is electrified.

S121: and after the motor stores the fault code, controlling the window motor to enter a low power consumption state, and controlling the window motor to enter a deep sleep state after preset time.

After the window motor stores the fault code, the window motor consumes power all the time without being dormant, so that the motor is controlled to enter deep dormancy after continuous monitoring is carried out for 10min, a vehicle is in a low-power-consumption state, and the condition that power consumption all the time causes vehicle feeding is avoided.

S13: and determining a target control circuit corresponding to the window motor according to the fault signal.

The fault signals comprise abnormal motor position information and fault reasons, the fault reasons comprise current, voltage abnormality, line damage and the like, and according to the fault signals sent by the motors, one motor in the four windows is confirmed to be in an abnormal state and is positioned to a motor circuit to execute subsequent steps.

S14: and controlling a relay of the target control circuit to be pulled high so as to cut off the connection between the current monitoring device and a working loop of the vehicle window motor.

As shown in figure 1, when a fault signal is received, the relay PIN3 and the relay PIN4 on the motor circuit are controlled to be pulled high so as to cut off the connection of the current monitoring device K2-9 and the working circuit of the window motor. In the setting of a vehicle window control system, the current monitoring device continuously monitors the abnormal current for more than 10s, and then wakes up the network, so as to wake up other modules of the vehicle, at the moment, the current monitoring device cannot detect the abnormal current and cannot wake up the vehicle network and other modules of the whole vehicle due to the fact that a working loop between the current monitoring device and a motor is cut off, and the other modules mainly receive a network control module, and if the vehicle network is woken up, the other modules are woken up at the same time.

S15: controlling a relay of the target control circuit to be pulled down at preset time intervals, and judging whether the fault signal is received again;

if the window motor judges that the fault signal is received again, executing step S152;

if the window motor determines that the fault signal is not received again, step S151 is executed.

S152: and controlling the relay of the target control circuit to be pulled high again.

S151: and storing the fault code, and setting the value of a state bit of the fault code to be 1, wherein the state bit is used for indicating whether the window motor automatically repairs the fault.

The preset time is 10s, when the relay is pulled up, a loop of the motor current is changed, the current monitoring device K2-9 cannot monitor abnormal current at the moment, the relay PIN3 and the relay PIN4 are controlled to be pulled down again, the current loop of the circuit is restored, the circuit condition is repeatedly detected, and whether a motor fault signal is received again at the moment is judged;

if the same motor fault signal is received again, the relay PIN3 and the relay PIN4 are controlled to be pulled high again, the connection between the current monitoring device K2-9 and the working circuit of the window motor is cut off, and the vehicle network cannot be awakened;

if the same motor fault signal is not received, the state value of the fault code is set to be 1, the self-repairing fault of the vehicle is represented, and the fault code is stored as a historical fault code.

Repeating the step S15 to accurately judge the abnormal condition of the motor, such as the error reporting condition of the motor fault or self-repairing fault, and timely adjusting the circuit state.

And judging whether the relay of the control target circuit is pulled down for 3 times, if so, executing the step S16, and if not, continuing to execute the step S15.

S16: and when the whole vehicle is powered on, the fault code is sent to the whole vehicle controller through the CAN network.

The fault codes comprise fault codes for detecting fault information storage and historical fault codes stored after fault elimination, and fault information existing in the vehicle can be correspondingly searched and whether the fault information is automatically repaired or not can be correspondingly searched through the fault codes, so that a user is helped to overhaul the vehicle.

S17: when the whole vehicle is powered on, detecting the motor circuit and judging whether to receive the fault signal again;

if the motor receives the fault signal again, executing step S172;

if the motor does not receive the fault signal, step S171 is executed.

S172: and continuously pulling up the relay.

S171: and controlling the relay to be pulled down to recover the normal work of the motor.

As shown in fig. 1, after the vehicle is powered on, the vehicle is immediately wakened up, the window motor stops sleeping, the relay PIN3 and the relay PIN4 are controlled to be pulled down, the circuit condition of the motor is detected, if a large current is detected, the relay PIN3 and the relay PIN4 are continuously controlled to be pulled up, the sampling resistor R62 is separated from the large current and protected, and meanwhile, the motor and the circuit are protected from being damaged; if the circuit fault is eliminated, the relay PIN3 and the relay PIN4 are controlled to be pulled down, the current loop is normal, and the normal operation of the motor is recovered.

In the sleep state, if the window motor detects an abnormal current, the above steps S11-S16 are performed to prevent the vehicle from being awakened and causing the vehicle to feed power.

When the vehicle is connected with a power supply or receives a CAN network signal, the vehicle is immediately awakened, if a window motor is short-circuited or breaks down, the relay PIN3 and the relay PIN4 are controlled to be pulled high, the sampling resistor R62 is separated from a large current, and meanwhile, the protection circuit and the motor are not influenced by abnormal current to damage motor equipment.

In summary, in the control method of the window motor control circuit in the above embodiment of the present invention, by acquiring a fault signal sent by any window motor, where the fault signal is sent when the window motor detects that the working current of the window motor is greater than the threshold, according to the fault signal, the target control circuit where the window motor is located is determined, and the relay of the target control circuit is controlled to be pulled high, so as to cut off the connection between the current monitoring device and the working circuit of the window motor, and the current monitoring device cannot detect an abnormal current, so that the CAN network and other modules of the vehicle cannot be woken up, thereby solving the problem in the prior art that the vehicle cannot enter a sleep state to finally trigger the feeding of the entire vehicle, which affects the starting of the vehicle, due to the short circuit or the circuit breakage of the window motor.

Example two

In another aspect, the present invention further provides a control device of a motor control circuit, referring to fig. 3, which is applied to a vehicle having a window control system, and includes:

the signal acquisition module is used for acquiring a fault signal sent by any window motor, wherein the fault signal is sent when the window motor detects that the working current of the window motor is greater than a threshold value;

the fault circuit determination module is used for determining a target control circuit corresponding to the vehicle window motor according to the fault signal;

and the circuit control module is used for controlling the relay of the target control circuit to be pulled up so as to cut off the connection between the current monitoring device and the working circuit of the vehicle window motor.

Further, in some optional embodiments of the present invention, the signal obtaining module further includes:

and the fault storage module is used for storing a fault code when a fault signal sent by any window motor is acquired.

Further, in some optional embodiments of the present invention, the apparatus further comprises:

and the fault sending module is used for sending the fault code to the vehicle controller through the CAN network when the vehicle is powered on.

Further, in some optional embodiments of the present invention, the apparatus may further include:

and the motor control module is used for controlling the window motor to enter a low power consumption state and controlling the window motor to enter a deep sleep state after preset time.

Further, in some optional embodiments of the present invention, the circuit control module may further include:

the relay control module is used for controlling the relay of the target control circuit to be pulled down at preset time intervals and judging whether the fault signal is received again, if so, the relay of the target control circuit is controlled to be pulled up again, if not, the fault code is stored, the value of the state bit of the fault code is set to be 1, and the state bit is used for indicating whether the window motor automatically repairs the fault.

Further, the apparatus may further include:

the circuit fault judging module is used for detecting the motor circuit and judging whether to receive the fault signal again when the whole vehicle is powered on;

and the first execution unit is used for continuously pulling up the relay when the circuit receives the fault signal again.

And the second execution unit is used for controlling the relay to be pulled down and recovering the normal work of the motor when the circuit does not receive the fault signal again.

The functions or operation steps of the modules and units when executed are substantially the same as those of the method embodiments, and are not described herein again.

In summary, in the control device of the window motor control circuit in the above embodiment of the present invention, by acquiring a fault signal sent by any window motor, where the fault signal is sent when the window motor detects that the working current of the window motor is greater than the threshold, according to the fault signal, the target control circuit where the window motor is located is determined, and the relay of the target control circuit is controlled to be pulled high, so as to cut off the connection between the current monitoring device and the working circuit of the window motor, and the current monitoring device cannot detect an abnormal current, so that the CAN network and other modules of the vehicle cannot be woken up, thereby solving the problem in the prior art that the vehicle cannot enter a sleep state to finally trigger the feeding of the entire vehicle, which affects the starting of the vehicle, due to the short circuit or the circuit breakage of the window motor.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the control method of the window motor control circuit as described above.

EXAMPLE III

In another aspect, the present invention further provides a control system of a window motor control circuit, where the system includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the program to implement the method of the window motor control circuit in the above embodiments. In some embodiments, the processor may be an Electronic Control Unit (ECU), a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor or other data processing chip, and is configured to run program codes stored in the memory or process data, such as executing an access restriction program.

Wherein the memory includes at least one type of readable storage medium including flash memory, hard disks, multimedia cards, card-type memory (e.g., SD or DX memory, etc.), magnetic memory, magnetic disks, optical disks, etc. The memory may in some embodiments be an internal storage unit of the vehicle, such as a hard disk of the vehicle. The memory may also be an external storage device of the vehicle in other embodiments, such as a plug-in hard drive provided on the vehicle, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card (FlashCard), and the like. Further, the memory may also include both an internal storage unit and an external storage device of the vehicle. The memory may be used not only to store application software installed in the vehicle and various types of data, but also to temporarily store data that has been output or is to be output.

In summary, in the control system of the window motor control circuit in the above embodiment of the present invention, by acquiring a fault signal sent by any window motor, where the fault signal is sent when the window motor detects that the working current of the window motor is greater than the threshold, according to the fault signal, the target control circuit where the window motor is located is determined, and the relay of the target control circuit is controlled to be pulled high, so as to cut off the connection between the current monitoring device and the working circuit of the window motor, and the current monitoring device cannot detect an abnormal current, so that the CAN network and other modules of the vehicle cannot be woken up, thereby solving the problem in the prior art that the vehicle cannot enter a sleep state to finally trigger the feeding of the entire vehicle, which affects the starting of the vehicle, due to the short circuit or the circuit breakage of the window motor.

Those of skill in the art will understand that the logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be viewed as implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.