阅读说明：本技术 一种轮径参数的适配方法及装置 (Wheel diameter parameter adaptation method and device ) 是由 李一叶 程玉溪 沈梦玉 彭桢 于 2019-11-28 设计创作，主要内容包括：本发明提供了一种轮径参数的适配方法及装置。应用在列车主控单元的适配方法包括：响应于接收到人机交互接口输出的上述列车的当前轮径参数,判断上述当前轮径参数是否在预设轮径范围内；响应于上述当前轮径参数在上述预设轮径范围内,以上述当前轮径参数更新上述主控单元中的轮径参数；以及将上述当前轮径参数发送至若干从控单元,以更新上述若干从控单元中的轮径参数。各个从控单元响应于接收到主控单元发送的轮径参数更新轮径参数。本发明还提供了实现上述适配方法的装置。根据本发明所提供的方法及装置,能够高效地对整个列车系统的轮径参数进行更新、同步,为实现列车自动运行控制提供可能。(The invention provides a wheel diameter parameter adapting method and device. The adaptation method applied to the train main control unit comprises the following steps: responding to the received current wheel diameter parameter of the train output by the man-machine interaction interface, and judging whether the current wheel diameter parameter is within a preset wheel diameter range; updating the wheel diameter parameter in the main control unit by the current wheel diameter parameter in response to the current wheel diameter parameter being within the preset wheel diameter range; and sending the current wheel diameter parameter to a plurality of slave control units so as to update the wheel diameter parameters in the plurality of slave control units. And each slave control unit updates the wheel diameter parameters in response to receiving the wheel diameter parameters sent by the master control unit. The invention also provides a device for realizing the adaptation method. According to the method and the device provided by the invention, the wheel diameter parameters of the whole train system can be efficiently updated and synchronized, and the possibility is provided for realizing automatic operation control of the train.)

1. A wheel diameter parameter adaptation method is applied to a main control unit of a train, and is characterized by comprising the following steps:

responding to the received current wheel diameter parameter of the train output by the man-machine interaction interface, and judging whether the current wheel diameter parameter is within a preset wheel diameter range;

responding to the current wheel diameter parameter in the preset wheel diameter range, and updating the wheel diameter parameter in the main control unit by the current wheel diameter parameter; and

and sending the current wheel diameter parameters to a plurality of slave control units so as to update the wheel diameter parameters in the plurality of slave control units.

2. The adaptation method of claim 1, further comprising:

and responding to the situation that the current wheel diameter parameter is not in the preset wheel diameter range, and outputting a prompt signal to the human-computer interaction interface until the current wheel diameter parameter which is output by the human-computer interaction interface and is in the preset wheel diameter range is received.

3. The adaptation method of claim 1, further comprising:

and responding to the train starting, and sending the wheel diameter parameters in the master control unit to the plurality of slave control units so as to synchronize the wheel diameter parameters of the master control unit and the plurality of slave control units.

4. The adaptation method of claim 1, further comprising:

receiving wheel diameter parameters sent by the plurality of slave control units;

checking the transmitted wheel diameter parameters based on the wheel diameter parameters in the master control unit; and

responsive to a failed test, outputting a prompt signal, and/or

And sending the wheel diameter parameters in the master control unit to the slave control units which do not pass the inspection so as to update the wheel diameter parameters in the slave control units which do not pass the inspection.

5. A wheel diameter parameter adaptation method is applied to a slave control unit of a train, and is characterized by comprising the following steps:

responding to the received wheel diameter parameters sent by the main control unit of the train, and judging whether the received wheel diameter parameters are within a preset wheel diameter range;

responding to the received wheel diameter parameter in the preset wheel diameter range, and updating the wheel diameter parameter in the slave control unit by the received wheel diameter parameter; and

and sending the updated wheel diameter parameters to the main control unit.

6. The adaptation method of claim 5, further comprising:

and responding to the fact that the received wheel diameter parameters are not in the preset wheel diameter range, and outputting a prompt signal to the main control unit until the wheel diameter parameters which are sent by the main control unit and are in the preset wheel diameter range are received.

7. An adaptation device of wheel diameter parameters, which is applied to a main control unit of a train and comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to realize the adaptation method according to any one of claims 1 to 4.

8. An adaptation device of wheel diameter parameters, which is applied to a slave control unit of a train, and comprises a memory, a processor and a computer program stored on the memory and running on the processor, wherein the processor executes the computer program to realize the adaptation method according to any one of claims 5 to 6.

9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the adaptation method according to any one of claims 1-4.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the adaptation method according to any one of claims 5-6.

Technical Field

The invention relates to the field of automatic control of trains, in particular to a method and a device for quickly adapting wheel diameter parameters of a train.

Background

In modern vehicles of various types, vehicles are often fitted with a plurality of different types of rubber-tyred tires. The accurate size of the rubber tyre is directly related to the speed calculation of the train, and the subsequent related control of train traction braking, train positioning and the like is the basic prerequisite condition of train control. Ensuring the accuracy of wheel diameter parameters is the most basic important link for modern train control and automation.

In rubber-tyred trains, the vehicle can often be fitted with tires of different models as required. After the vehicle is replaced with tires of different sizes, the conditions of inaccurate speed and the like can occur due to mismatching of wheel diameter parameters. Although the wheel diameter parameters in each system can be corrected, the correction is carried out by updating corresponding control software, and the update of the wheel diameter parameters is very labor and material resources due to the fact that versions are not agreed. Along with the increasing of the intelligent degree of modern trains, various subsystems and components need to be accurately controlled by wheel diameter values, once tires are replaced, a plurality of system software codes need to be updated one by one, the automation degree is low, and updating is difficult.

Therefore, there is a need for a wheel diameter parameter adapting method and device, which can implement rapid adaptation of wheel diameter parameters of different models between different systems, thereby providing possibility for precise control of trains.

Disclosure of Invention

The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

In order to solve the above problems, the present invention provides a wheel diameter parameter adapting method, which is applied to a main control unit of a train, and comprises:

responding to the received current wheel diameter parameter of the train output by the man-machine interaction interface, and judging whether the current wheel diameter parameter is within a preset wheel diameter range;

updating the wheel diameter parameter in the main control unit by the current wheel diameter parameter in response to the current wheel diameter parameter being within the preset wheel diameter range; and

and sending the current wheel diameter parameter to a plurality of slave control units so as to update the wheel diameter parameters in the plurality of slave control units.

In an embodiment of the foregoing adapting method, optionally, the adapting method further includes:

and responding to the situation that the current wheel diameter parameter is not in the preset wheel diameter range, and outputting a prompt signal to the human-computer interaction interface until the current wheel diameter parameter which is output by the human-computer interaction interface and is in the preset wheel diameter range is received.

In an embodiment of the foregoing adapting method, optionally, the adapting method further includes:

and responding to the start of the train, and sending the wheel diameter parameters in the main control unit to the plurality of slave control units so as to synchronize the wheel diameter parameters of the main control unit and the plurality of slave control units.

In an embodiment of the foregoing adapting method, optionally, the adapting method further includes:

receiving wheel diameter parameters sent by the plurality of slave control units;

checking the fed back wheel diameter parameters based on the wheel diameter parameters in the main control unit; and

responsive to a failed test, outputting a prompt signal, and/or

And sending the wheel diameter parameters in the master control unit to the slave control units which do not pass the inspection so as to update the wheel diameter parameters in the slave control units which do not pass the inspection.

The invention also provides an adaptation method of the wheel diameter parameters, which is applied to a slave control unit of a train and comprises the following steps:

responding to the received wheel diameter parameters sent by the main control unit of the train, and judging whether the received wheel diameter parameters are in a preset wheel diameter range;

in response to the received wheel diameter parameter being within the preset wheel diameter range, updating the wheel diameter parameter in the slave control unit by the received wheel diameter parameter; and

and sending the updated wheel diameter parameters to the main control unit.

In an embodiment of the foregoing adapting method, optionally, the adapting method further includes:

and responding to the fact that the received wheel diameter parameters are not within the preset wheel diameter range, and outputting a prompt signal to the main control unit until the wheel diameter parameters which are sent by the main control unit and are within the preset wheel diameter range are received.

The invention also provides an adaptive device of wheel diameter parameters, which is applied to a main control unit of a train and comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the computer program, any embodiment of the adaptive method applied to the main control unit of the train is realized.

The invention also provides an adaptive device of the wheel diameter parameters, which is applied to a slave control unit of a train and comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the computer program, any embodiment of the adaptive method applied to the slave control unit of the train is realized.

The invention also provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements any of the embodiments of the adaptation method applied to the train main control unit as described above.

The invention also provides a computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements any of the embodiments of the adaptation method applied to a train slave unit as described above.

According to the wheel diameter parameter adapting method and device provided by the invention, the operation is convenient, the wheel diameter parameters of the whole train system can be updated and synchronized very efficiently, and the possibility is provided for realizing automatic operation control of the train.

Drawings

The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.

Fig. 1 shows a flow chart of an adaptation method of a wheel diameter parameter applied to a train main control unit provided by the invention.

Fig. 2 shows a schematic structural diagram of an adapting device for wheel diameter parameters applied to a train main control unit provided by the invention.

Fig. 3 shows a flow chart of the adaptation method of the wheel diameter parameter applied to the slave control unit of the train provided by the invention.

Fig. 4 shows a schematic structural diagram of the adapting device for the wheel diameter parameter applied to the slave control unit of the train provided by the invention.

Reference numerals

S101-S105 steps

S201-S205 steps

100 main control unit adapter

110 processor

120 memory

200 slave control unit adapting device

210 processor

220 memory

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.

In order to solve the problem that each subsystem is lack of uniform wheel diameter parameter adaptation in the prior art, the invention provides a train wheel diameter parameter adaptation method and device. Referring to fig. 1, a wheel diameter parameter adapting method applied to a train main control unit according to the present invention will be understood. As shown in fig. 1, the wheel diameter parameter adapting method applied to the train master control unit provided by the present invention first includes step S101: receiving a current wheel diameter parameter of the train output by a man-machine interaction interface; step S102: judging whether the current wheel diameter parameter is within a preset wheel diameter range; wherein, in response to the current wheel diameter parameter not being within the preset wheel diameter range, executing step S103: outputting a prompt signal, returning to the step S101, and continuously receiving the current wheel diameter parameter of the train output by the man-machine interaction interface; responding to the current wheel diameter parameter being in the preset wheel diameter range, executing the step S104: updating the wheel diameter parameters in the main control unit according to the current wheel diameter parameters; and step S105: and sending the current wheel diameter parameters to the plurality of slave control units so as to update the wheel diameter parameters in the plurality of slave control units.

In the above step S101, a Human Machine Interface (HMI) broadly refers to an Interface of an input/output device establishing a connection between a person and a computer and exchanging information, and the device includes, but is not limited to, a keyboard, a display, a printer, a mouse, and the like. Train maintenance personnel can input the latest wheel diameter parameters through a man-machine interaction interface, so that the unified wheel diameter parameters of other systems are updated according to the adaptation method provided by the invention.

In step S102, the preset wheel diameter range is a wheel diameter range that can be configured according to the vehicle chassis and mechanical space limitations. The wheel diameter range which can be configured through presetting can prevent train maintenance personnel from generating larger deviation when setting the wheel diameter parameters, or even if errors occur, the error deviation of the wheel diameter parameters cannot be too large, thereby avoiding larger potential safety hazards.

In response to that the current wheel diameter parameter is not within the preset range, executing step S103: and outputting a prompt signal to a man-machine interaction interface to remind train maintenance personnel that the set wheel diameter parameters are wrong and to remind the train maintenance personnel to input correct wheel diameter parameters.

If the set current wheel diameter parameter is within the preset wheel diameter range, step S104 is executed: updating the wheel diameter parameters in the main control unit according to the current wheel diameter parameters; in this step, the main control unit first saves the set current wheel diameter parameter, and when control calculation is needed, the set current wheel diameter parameter is adopted for calculation. Thereby, the update of the wheel diameter parameters can be realized.

After the master control unit performs step S104, the master control unit further performs step S105: and sending the current wheel diameter parameters to the plurality of slave control units so as to update the wheel diameter parameters in the plurality of slave control units. The plurality of slave control units are all units of which the master control unit judges that the wheel diameter parameters are needed to be calculated so as to control the train. Through the wheel diameter value that will newly set up send each slave unit to through vehicle control network in unison, can avoid the unit too much and the artificial redundant operation that causes. Meanwhile, at each slave control unit end, in order to achieve the effect to be achieved by the present invention, each slave control unit end is configured to be able to receive the wheel diameter parameter from the master control unit, and to be able to replace the wheel diameter parameter originally stored in each slave control unit with the received wheel diameter parameter. For example, in the adaptation method provided by the present invention, for the master control unit and each slave control unit, in the content of performing interaction in respective communication, corresponding content may be predetermined to transmit the wheel diameter information and the synchronization flag bit. When each slave control unit receives the synchronous flag bit, the wheel diameter information received at the same time is stored, written and updated to each slave control unit. By setting a uniform port for receiving the wheel diameter parameters, the wheel diameter parameters can be efficiently adapted even if a plurality of slave control units exist.

In the above embodiment, the synchronization flag is sent out after the master control unit receives the manually input wheel diameter parameter. Furthermore, the adaptation method applied to the master control unit provided by the invention further comprises the step of sending the wheel diameter parameters in the master control unit to the plurality of slave control units in response to the start of the train so as to synchronize the wheel diameter parameters of the master control unit and the plurality of slave control units. That is, in another embodiment, the synchronization flag is automatically issued by the master unit when the entire system is started.

With the complication of modern train control, the train control needs a plurality of systems and units to participate, and the effective operation control can be performed between the systems and units by ensuring that parameters used by the systems and units to participate in control calculation are uniform. Therefore, the adaptation method provided by the invention can ensure that the wheel diameter parameters used between the master control unit and each slave control unit are uniform after the train is started every time by controlling the master control unit to send the current wheel diameter parameters of the master control unit to each slave control unit when the train is started, thereby effectively controlling the running and avoiding the hidden trouble of the running.

Furthermore, the adaptation method applied to the master control unit further comprises the steps of receiving wheel diameter parameters sent by a plurality of slave control units; checking the transmitted wheel diameter parameters based on the wheel diameter parameters in the main control unit; and outputting a prompt signal in response to the test failing. In this embodiment, in order to further ensure that the wheel diameter parameters used among the units are uniform, the adaptation method provided by the present invention can receive the current wheel diameter parameters of the slave control units, and compare whether the current wheel diameter parameters of the slave control units sent by the slave control units and the wheel diameter parameters of the master control unit themselves are consistent with each other by using the latest wheel diameter parameters of the master control unit itself as a standard to determine whether the slave control units meet the requirements.

If the errors are inconsistent, a prompt signal can be output to inform train maintenance personnel to notice the errors.

In another embodiment, the adaptation method provided by the present invention further includes sending the wheel diameter parameters in the master control unit to the slave control units that do not pass the verification again to update the wheel diameter parameters in the slave control units that do not pass the verification, so as to attempt to solve the problem that the wheel diameter parameters of the slave control units do not match the wheel diameter parameters of the master control unit.

Correspondingly, the invention further provides an adaptation method applied to the wheel diameter parameters of the train slave control unit, and please refer to fig. 3 to understand the adaptation method applied to the wheel diameter parameters of the train slave control unit.

As shown in fig. 3, the wheel diameter parameter adapting method applied to the slave control unit of the train provided by the present invention first includes step S201: receiving wheel diameter parameters sent by a main control unit of a train; step S202: judging whether the received wheel diameter parameters are within a preset wheel diameter range or not; wherein, in response to the received wheel diameter parameter not being within the preset wheel diameter range, executing step S203: outputting a prompt signal, returning to the step S201, and continuously receiving the wheel diameter parameters sent by the main control unit of the train; in response to the received wheel diameter parameter being within the preset wheel diameter range, executing step S204: updating the wheel diameter parameters in the slave control unit according to the received wheel diameter parameters; and step S205: and sending the updated wheel diameter parameters to the main control unit.

Specifically, in step S201, the slave control unit receives the wheel diameter parameter sent by the master control unit through the vehicle control network. The received wheel diameter parameter may be a wheel diameter parameter sent by the main control unit when the train is started, or may be a current wheel diameter parameter received by the main control unit from the man-machine interaction interface. The slave control unit is configured to receive the wheel diameter parameters transmitted by the master control unit without distinguishing a source of the wheel diameter parameters.

In step S202, the preset wheel diameter range is a wheel diameter range that can be configured according to the vehicle chassis and mechanical space limitations. The wheel diameter range which can be configured is preset in the slave control unit, so that the received wheel diameter parameters and the wheel diameter parameters sent by the master control unit are effectively prevented from being inconsistent due to network transmission and other faults, or even if errors occur, the error deviation of the wheel diameter parameters is not too large, and the larger potential safety hazard is avoided.

In response to that the current wheel diameter parameter is not within the preset range, executing step S203: and outputting a prompt signal. In one embodiment, the prompt signal may be output to a human-computer interface to remind train maintenance personnel that the received wheel diameter parameter is wrong, and that a network fault may exist. In another embodiment, a prompt signal may be fed back to the master control unit in an attempt to cause the master control unit to send the correct wheel diameter parameters.

In step S204, each slave control unit is configured to replace the wheel diameter parameters originally stored in each slave control unit with the received wheel diameter parameters, so that even if the control modes and control software of each slave control unit are different, the wheel diameter parameters can be efficiently adapted by the adaptation method provided by the present invention.

In step S205, in order to ensure that the updated wheel diameter parameter of each slave control unit is matched with the master control unit, the updated latest wheel diameter parameter may be sent to the master control unit after the slave control unit updates the wheel diameter parameter each time, and the master control unit performs verification, so as to ensure that the wheel diameter parameter value between each slave control unit and the master control unit is always matched.

The invention provides a wheel diameter parameter adapting method which is respectively applied to a train main control unit and a train slave control unit and is matched with the train main control unit and the train slave control unit. According to the adaptation method provided by the invention, the possibility of efficiently adapting the wheel diameter parameters is provided by arranging the uniform ports. In the adaptation method provided by the invention, the wheel diameter parameters between the master control unit and the slave control unit can be effectively ensured to be accurate and uniform by setting a multi-level error-proofing mechanism (presetting the wheel diameter range and checking the parameters of the slave control unit and the master control unit), so that the parameters can be provided for train control calculation, the train operation is controlled more accurately, and the hidden danger of driving is avoided.

The invention also provides an adapting device applied to the train main control unit, please refer to fig. 2, and fig. 2 shows a schematic diagram of the adapting device of the main control unit. As shown in fig. 2, the master unit adaptation device 100 includes a processor 110 and a memory 120. The processor 110 of the main control unit adapting device 100 can implement the adapting method applied to the train main control unit described above when executing the computer program stored in the memory 120, and please refer to the description of the adapting method applied to the train main control unit, which is not described herein again.

The invention also provides an adapting device applied to a train slave control unit, please refer to fig. 4, and fig. 4 shows a schematic diagram of the adapting device of the slave control unit. As shown in fig. 4, the slave unit adapting device 200 includes a processor 210 and a memory 220. The processor 210 of the slave control unit adapting device 200 can implement the above-described adapting method applied to the train slave control unit when executing the computer program stored in the memory 220, and please refer to the above description of the adapting method applied to the train slave control unit, which is not described herein again.

It will be appreciated that in one embodiment, the master control unit and the slave control unit may be physical devices that exist independently of each other, and interact with the master control device through an associated communication network. In another embodiment, the slave control unit may also be a program module implemented by a computer program in the master control unit, which is a sub-module of the master control unit and has a capability of data interaction with the master control unit.

So far, the invention has described the adaptation method and device respectively applied to the train master control unit and the train slave control unit. The invention also provides two computer storage media, wherein computer programs are stored on the computer storage media, and when the computer programs are executed by a processor, the steps of the method for adapting the wheel diameter parameters applied to the train main control unit and the method for adapting the wheel diameter parameters applied to the train slave control unit are respectively realized.

Those of skill in the art would understand that information, signals, and data may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits (bits), symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted" and "coupled" are to be construed broadly, e.g., as meaning fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The various illustrative logical modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.

In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk (disk) and disc (disc), as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks (disks) usually reproduce data magnetically, while discs (discs) reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.