阅读说明：本技术 控制设备 (Control device ) 是由 A.鲍莱特 于 2020-03-19 设计创作，主要内容包括：一种用于控制无线传输的电路。该电路包括耦合到用于无线传输的功率放大器的多输入逻辑门。逻辑门的第一输入耦合到第一无线收发器；以及该门的第二输入耦合到一个或多个无线设备。(A circuit for controlling wireless transmission. The circuit includes a multiple-input logic gate coupled to a power amplifier for wireless transmission. A first input of the logic gate is coupled to the first wireless transceiver; and a second input of the gate is coupled to one or more wireless devices.)

1. A circuit, comprising:

a multi-input logic gate coupled to the power amplifier for wireless transmission,

wherein a first input of the logic gate is coupled to a first wireless transceiver; and

a second input of the gate is coupled to one or more wireless devices.

2. The circuit of claim 1, wherein the first wireless transceiver is a wifi device.

3. The circuit of claim 2, wherein the one or more wireless devices operate in the same wireless frequency band as the wifi device.

4. The circuit of any preceding claim, wherein an output of the multi-input logic gate is coupled to an enable input of the power amplifier.

5. A circuit as claimed in any preceding claim, wherein the multi-input logic gate is an and gate.

6. The circuit of any preceding claim, wherein the output of the wireless device is coupled to a control line via an OR gate, the control line being coupled to a first input of the logic gate.

7. A circuit as claimed in any preceding claim, wherein the input of the power amplifier is coupled to a controllable switch for opening the input.

8. The circuit of claim 7, wherein the switch terminates an input signal via a resistive load.

9. A circuit comprising a controllable switch coupled to a power amplifier for wireless transmission, wherein the switch is controllable by a wireless transceiver to terminate an input signal into the power amplifier.

10. An electronic device comprising the circuit of any of claims 1-9.

11. The electronic device of claim 10, comprising a gateway.

12. The electronic device of claim 10, comprising a tablet device.

13. The electronic device of claim 10, comprising a smartphone.

Technical Field

The present embodiments relate generally to control circuitry in a wireless system. At least one embodiment relates to a control device for inhibiting wireless transmissions.

Background

As wireless systems become more complex, they need to accommodate more and more wireless type applications and conflicts between these applications. For example, internet of things (IoT) radios, including bluetooth, Zigbee (Zigbee), Thread (Thread), etc., operate in the same frequency band as 802.11 WiFi. When operating within the same device, powerful WiFi transmission power may block low power incoming IoT signals. If the time of the IoT transmission is known, there are actually various specialized mechanisms driven by software to reserve time for the IoT transmission or to truncate the WiFi transmission. However, such mechanisms can result in significant software overhead when implemented and suffer from latency problems that can reduce performance. The present embodiment is designed in consideration of the foregoing.

Disclosure of Invention

According to a first aspect, a circuit is provided. The circuit includes a multi-input logic gate coupled to a power amplifier for wireless transmission, wherein a first input of the logic gate is coupled to a first wireless transceiver; and a second input of the gate is coupled to one or more wireless devices.

According to a second aspect, a device for wireless communication is provided. The apparatus includes a circuit comprising a multi-input logic gate coupled to a power amplifier for wireless transmission, wherein a first input of the logic gate is coupled to a first wireless transceiver; and a second input of the gate is coupled to one or more wireless devices.

According to a third aspect, a circuit is provided. The circuit includes a controllable switch coupled to a power amplifier for wireless transmission, wherein the switch is controllable by a wireless transceiver to terminate (terminate) an input signal into the power amplifier.

Drawings

FIG. 1 is a schematic diagram of a control circuit according to a first embodiment;

FIG. 2 is a schematic diagram of a control circuit according to a second embodiment; and

fig. 3 is a block diagram of an electronic wireless device product according to an embodiment.

Detailed Description

In a general embodiment, an apparatus for controlling wireless transmissions includes a hardware control based on an output of one or more IoT radios. The control may trigger hardware blocking or disabling of wireless transmissions, such as WiFi transmissions, by asserting (assert) a control signal via a control line.

Fig. 1 shows a circuit for controlling wireless transmission according to an embodiment. The circuit 100 includes a power amplifier 101, a two-input AND (AND) gate 102 coupled to an enable input PA _ EN of the power amplifier 101. A first input of the and gate is connected to the power enable control of the wireless transceiver 104, and a second input of the and gate is coupled to the outputs of the n number of IoT devices 111, 112, … 11n through a resistor circuit R and a control line C. The wireless transceiver 104 may be a WiFi transceiver operating in accordance with 802.11 WiFi. An internet of things (IoT) radio may include one or more of bluetooth, zigbee, thread, and the like.

The configuration of the and gate and control line C from the IoT radio enables the power amplifier to be controlled off by the enable input of the power amplifier 101. This causes ongoing transmissions to be blocked or future wifi transmissions to be inhibited or blocked until the line is released. In one OR more embodiments, the control line C may be a wired-OR (wired-OR) type coupled to the output of the IoT radios, such that one OR more of the IoT radios can assert the same control line C to control wifi transmissions. WiFi packets lost due to this control mechanism can be retransmitted using the normal WiFi protocol.

It may be that when there is power on the transmit input, the power amplifier 101 is not operable to handle the case where its enable is low, and therefore may be corrupted in this control mode. As shown in fig. 2, a separate control line may be added to the power amplifier 101 to enable the input to be safely terminated to a 50 ohm load. The embodiment of fig. 2 includes an output of a wireless transceiver 204 coupled to a switch 205, the switch 205 being terminated at the input of the power amplifier by a 50 ohm load 206. In some embodiments, the switch 205 and the load 206 of fig. 2 may be connected between the output of the and gate 102 and the input of the power amplifier 101 of fig. 1.

FIG. 3 illustrates a block diagram of an example of an electronic device in which embodiments may be implemented. The device 1000 includes a control circuit 100 as shown in fig. 1, the control circuit 100 including a wireless transceiver 104 for wifi communication and a plurality of IoT radios operating in accordance with one or more of bluetooth, zigbee, thread, and the like.

Device 1000 may include the various components previously described and be configured to perform one or more embodiments described in this disclosure. Examples of such devices include, but are not limited to, network devices such as gateways or mobile devices such as tablets or smart phones. The elements of device 1000 may be present alone or in combination in a single integrated circuit, multiple ICs, and/or discrete components. In various embodiments, system 1000 is communicatively coupled to other systems or other electronic devices via, for example, a communications bus or through dedicated input and/or output ports.

Inputs to the elements of device 1000 may be provided through various input elements. Such input elements include, but are not limited to, (i) a wireless interface for receiving wireless signals, (ii) a composite input, (iii) a USB input, and/or (iv) an HDMI input.

In various embodiments, the input devices of block 1000 have associated respective input processing elements as known in the art. For example, the RF section may be associated with elements adapted to: (i) selecting a desired frequency (also referred to as selecting a signal, or band-limiting a signal to a frequency band), (ii) downconverting the selected signal, (iii) band-limiting again to a narrower frequency band to select, for example, a frequency band of the signal which may be referred to as a channel in some embodiments, (iv) demodulating the downconverted and band-limited signal, (v) performing error correction, and (vi) demultiplexing to select a desired data packet stream. The RF portion of various embodiments includes one or more elements that perform these functions, such as frequency selectors, signal selectors, band limiters, channel selectors, filters, down-converters, demodulators, error correctors, and demultiplexers. The RF section may include a tuner that performs various of these functions, including, for example, down-converting the received signal to a lower frequency (e.g., an intermediate or near baseband frequency) or baseband. In one set-top box embodiment, the RF section and its associated input processing elements receive RF signals transmitted over a wired (e.g., cable) medium and perform frequency selection by filtering, down-converting, and re-filtering to a desired frequency band. Various embodiments rearrange the order of the above (and other) elements, remove some of these elements, and/or add other elements that perform similar or different functions. Adding components may include inserting components between existing components, for example, inserting amplifiers and analog-to-digital converters. In various embodiments, the RF section includes an antenna.

Further, the USB and/or HDMI terminals may include respective interface processors for connecting the device 1000 to other electronic devices via a universal USB and/or HDMI connection. It should be appreciated that various aspects of the input processing, such as Reed-Solomon (Reed-Solomon) error correction, may be implemented, for example, within a separate input processing IC or within a processor included in the device 1000. Similarly, aspects of the USB and/or HDMI interface processing may be implemented within a separate interface IC or within the processor 1710 as desired.

The various elements of device 1000 may be provided within an integrated housing. Within the integrated housing, the various components may be interconnected and transmit data therebetween using suitable connection means, such as internal buses known in the art, including I2C buses, wiring, and printed circuit boards.

Device 1000 can include a communication interface that enables communication with other devices. The communication interface may include, but is not limited to, a transceiver configured to transmit and receive data over a communication channel. The communication interface may include, but is not limited to, a modem or network card, and the communication channel may be implemented, for example, within a wired and/or wireless medium.

In various embodiments, data may be streamed to device 1000 using a Wi-Fi network such as IEEE 802.11. The Wi-Fi signals of these embodiments are received over a communication channel and communication interface suitable for Wi-Fi communication. The communication channel of these embodiments may be connected to an access point or router that provides access to external networks, including the internet, to allow streaming applications and other over-the-top communications. Other embodiments provide streaming data to the system using a set-top box that delivers the data over an HDMI connection of the input block. Still other embodiments provide streaming data to a device using an RF connection of an input block.

Device 1000 may provide output signals to a variety of output devices, including a display 1050, speakers 1060, and other peripheral devices not shown. In various examples of embodiments, other peripheral devices may include one or more of a stand-alone DVR, a disk player, a stereo system, a lighting system, and other devices that provide functionality based on the output of device 1000. In various embodiments, control signals are communicated between the device 1000 and the display 1050, speakers 1060 or other peripheral devices using signaling such as the AV. link, CEC or other communication protocol that enables device-to-device control whether or not with user interference. Output devices may be communicatively coupled to device 1000 via dedicated connections through respective interfaces 1010 and 1020. Alternatively, the output device may be connected to the device via the communication interface using a communication channel. The display 1050 and speaker 1060 may be integrated in a single unit with other components in an electronic device (e.g., a television, tablet or mobile phone device). For example, if the circuit 100 is part of a separate set-top box, the display 1050 and speaker 1060 may alternatively be separate from one or more other components. In various embodiments where the display 1050 and speakers 1060 are external components, the output signals may be provided via a dedicated output connection (including, for example, an HDMI port, a USB port, or a COMP output).

Reference to "one embodiment" or "an embodiment" or "one implementation" or "an implementation," as well as other variations thereof, means that a particular feature, structure, characteristic, etc. described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" or "in one implementation" or "in an implementation," as well as any other variations, which appear in various places throughout this application, are not necessarily all referring to the same embodiment.