CN110189511B - Signal receiving device, wireless transmission system and signal switching method - Google Patents
Signal receiving device, wireless transmission system and signal switching method Download PDFInfo
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- CN110189511B CN110189511B CN201910440528.3A CN201910440528A CN110189511B CN 110189511 B CN110189511 B CN 110189511B CN 201910440528 A CN201910440528 A CN 201910440528A CN 110189511 B CN110189511 B CN 110189511B
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- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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Abstract
The invention discloses a signal receiving device, a wireless transmission system and a signal switching method, wherein the signal receiving device comprises: the device comprises an infrared receiver, a first HDMI interface, a sampling module, a data processing module and a first communication module; the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal; the sampling module is used for sampling the electric signal to obtain a sampling data signal and sending the sampling data signal to the first communication module; the first communication module converts the sampling data signal into a wireless signal and sends the wireless signal to the signal transmitting device; the data processing module is used for acquiring the video signal forwarded by the first communication module from the signal transmitting device and transmitting the video signal to the playing equipment through the first HDMI interface.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a signal receiving apparatus, a wireless transmission system, and a signal switching method.
Background
At present, the mobile projection equipment and the home theater equipment in the market are different, the traditional mobile projection equipment and the home theater equipment generally use a wired transmission mode, and when the channel switching of the projection equipment is needed, the projection source of the projection equipment is controlled by an infrared remote control device to switch signals.
However, the wired cable needs to be wired, and the user space is usually finished, which brings inconvenience to the user, and meanwhile, the signal receiving device adapted to the projection apparatus cannot analyze various infrared remote control signals, and cannot adapt to remote control signals sent by various infrared remote controllers.
Therefore, how to overcome the space limitation caused by the wired transmission manner of the existing signal receiving device and how to implement the analysis of multiple kinds of infrared rays is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention mainly aims to provide a signal receiving device, a wireless transmission system and a signal switching method, aiming at solving the problem of space limitation of a wired transmission mode.
In order to achieve the above object, the present invention provides a signal receiving apparatus applied to a wireless transmission system, the wireless transmission system further includes a signal transmitting apparatus, the signal receiving apparatus is communicatively connected to a playing device through a transmission line, the signal transmitting apparatus is communicatively connected to an information source device through a transmission line, the signal receiving apparatus includes: the device comprises an infrared receiver, a first HDMI interface, a sampling module, a data processing module and a first communication module; the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal;
the sampling module is used for sampling the electric signal to obtain a sampling data signal and sending the sampling data signal to the first communication module;
the first communication module converts the sampling data signal into a wireless signal and sends the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment;
the data processing module is used for acquiring a video signal forwarded by the first communication module from the signal transmitting device and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by the signal source equipment response signal transmitting device and is output to the signal transmitting device;
the sampling module samples the electric signal at a sampling frequency greater than 120Khz to obtain a fully-sampled electric signal, so as to obtain carrier frequency data and demodulation control data of the fully-sampled electric signal according to the fully-sampled electric signal; the sampling module further generates the sampling data signal according to the carrier frequency data and the demodulation control data, and outputs the sampling data signal to the first communication module.
Preferably, the first communication module is a wireless two-way communication module; the wireless communication frequency of the first communication module is 2.404-2.494 Ghz, 5.15-5.825 Ghz or 57-66 Ghz.
In order to achieve the above object, the present invention further provides a wireless transmission system, which includes a signal transmitting device and a signal receiving device, wherein the signal receiving device is in communication connection with the playing device through a transmission line, and the signal transmitting device is in communication connection with the information source device through a transmission line; the signal receiving apparatus includes: the device comprises an infrared receiver, a first HDMI interface, a sampling module, a data processing module and a first communication module; the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal; the sampling module is used for sampling the electric signal to obtain a sampling data signal and sending the sampling data signal to the first communication module; the first communication module converts the sampling data signal into a wireless signal and sends the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment; the data processing module is used for acquiring a video signal forwarded by the first communication module from the signal transmitting device and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by the signal source equipment response signal transmitting device and is output to the signal transmitting device;
the sampling module samples the electric signal at a sampling frequency greater than 120Khz to obtain a fully-sampled electric signal, so as to obtain carrier frequency data and demodulation control data of the fully-sampled electric signal according to the fully-sampled electric signal; the sampling module further generates the sampling data signal according to the carrier frequency data and the demodulation control data, and outputs the sampling data signal to the first communication module.
Preferably, the signal transmitting apparatus includes: the system comprises an infrared transmitter, a second communication module and a data cache module; the second communication module is used for receiving the wireless signal sent by the first communication module and sending the wireless signal to the infrared transmitter; the infrared transmitter generates an infrared remote control signal according to the wireless signal and transmits the infrared remote control signal to the information source equipment, so that the information source equipment responds to the infrared remote control signal and transmits a video signal to the signal transmitting device; the data caching module is used for receiving the video signal sent by the information source equipment and sending the video signal to the signal receiving device through the second communication module, so that the signal receiving device outputs the video signal to the playing equipment.
Preferably, the signal transmitting apparatus further includes a second HDMI interface, and the signal transmitting apparatus is communicatively connected to the source device through the second HDMI interface by using a transmission line.
In order to achieve the above object, the present invention further provides a signal switching method applied to the signal receiving apparatus, where the signal receiving apparatus includes an infrared receiver, a first HDMI interface, and a first communication module, and the signal switching method includes: the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal; sampling the electric signal to obtain a sampling data signal, and sending the sampling data signal to the first communication module; converting the sampling data signal into a wireless signal by using the first communication module, and sending the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment; the method comprises the steps of obtaining a video signal forwarded by a first communication module from a signal transmitting device, and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by a signal source equipment response signal transmitting device and is output to the signal transmitting device.
In order to achieve the above object, the present invention further provides a signal switching method, which is applied to the signal transmitting device of the wireless transmission system, where the signal transmitting device includes a second communication module and an infrared transmitter, and the signal switching method includes: receiving a wireless signal sent by a signal receiving device, wherein the wireless signal is generated by the signal receiving device responding to an infrared remote control signal sent by an infrared remote control device; converting the wireless signal into an infrared remote control signal by using the infrared transmitter, and transmitting the infrared remote control signal to the information source equipment so that the information source equipment responds to the infrared remote control signal to transmit a video signal to the signal transmitting device; and receiving the video signal sent by the information source equipment, and sending the video signal to a signal receiving device through a second communication module so that the signal receiving device outputs the video signal to the playing equipment.
In order to achieve the above object, the present invention further provides a signal receiving apparatus, wherein the wireless transmission system further includes a signal transmitting apparatus, the signal receiving apparatus is communicatively connected to the playing device through a transmission line, the signal transmitting apparatus is communicatively connected to the source device through a transmission line, and the signal receiving apparatus includes: an infrared receiver; a first communication module; a first HDMI interface; a first memory storing a computer readable program; and a first processor, which when invoked by the computer readable program, performs the method of: the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal; sampling the electric signal to obtain a sampling data signal, and sending the sampling data signal to the first communication module; converting the sampling data signal into a wireless signal by using the first communication module, and sending the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment; the method comprises the steps that a video signal forwarded by a first communication module from a signal transmitting device is obtained, and the video signal is sent to playing equipment through a first HDMI, wherein the video signal is an infrared remote control signal sent by a signal source equipment response signal transmitting device and is output to the signal transmitting device; the sampling module samples the electric signal at a sampling frequency greater than 120Khz to obtain a fully-sampled electric signal, so as to obtain carrier frequency data and demodulation control data of the fully-sampled electric signal according to the fully-sampled electric signal; the sampling module further generates the sampling data signal according to the carrier frequency data and the demodulation control data, and outputs the sampling data signal to the first communication module.
Compared with the prior design, the invention provides a signal receiving device, a wireless transmission system and a signal switching method, by arranging the signal transmitting device and the signal receiving device, the signal transmitting device is connected with the information source equipment, the signal receiving device is connected with the playing equipment, the signal transmitting device is connected with the signal receiving device through wireless communication, it may be so that the signal output by the source device may be transmitted by wireless transmission to a signal receiving apparatus, thereby effectively solving the problem of space limitation of the traditional wired transmission mode of the information source equipment and the player, meanwhile, the signal transmitting device is provided with an infrared receiver for receiving the infrared remote control signal and converting the infrared remote control signal into an electric signal, the signal transmitting device can analyze and sample the electric signal converted by the infrared remote control signal, so that the signal transmitting device can analyze various infrared remote control signals.
Drawings
Fig. 1 is a block diagram of a wireless transmission system according to a first embodiment of the present invention;
fig. 2A is a block diagram of a signal receiving apparatus and a playing device of a wireless transmission system according to the present invention;
fig. 2B is a schematic diagram of the signal receiving device demodulating the electrical signal generated by the infrared receiver.
Fig. 3 is a block diagram of a signal transmitting apparatus and a signal source device of a wireless transmission system according to the present invention;
FIG. 4 is a flowchart illustrating a signal switching method according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating a signal switching method according to a third embodiment of the present invention;
fig. 6 is a block diagram of a signal receiving apparatus according to a fourth embodiment of the present invention;
fig. 7 is a block diagram of a signal transmitting apparatus according to a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a signal receiving device, a wireless transmission system and a signal switching method. When a user needs to switch the video signal played by the player, an infrared remote control signal is sent to a signal receiving device through an infrared remote control device matched with the information source equipment, and the signal receiving device receives the infrared remote control signal sent by the infrared remote control device by using the infrared receiver and converts the infrared remote control signal into an electric signal; sampling the electric signal to obtain a sampling data signal, and sending the sampling data signal to the first communication module; converting the sampling data signal into a wireless signal by using the first communication module, and sending the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal from the wireless signal and sends the infrared remote control signal to the information source equipment; the method comprises the steps of obtaining a video signal forwarded by a first communication module from a signal transmitting device, and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by a signal source equipment response signal transmitting device and is output to the signal transmitting device.
Because the signal transmitting device is connected with the information source equipment, the signal receiving device is connected with the playing equipment, and the signal transmitting device is connected with the signal receiving device through wireless communication, signals output by the information source equipment can be transmitted to the signal receiving device through wireless transmission, and the problem of space limitation of a traditional wired transmission mode of the information source equipment and the player is effectively solved.
Further, the signal transmitting device is provided with an infrared receiver to receive the infrared remote control signal and convert the infrared remote control signal into an electric signal, and the signal transmitting device can analyze and sample the electric signal converted from the infrared remote control signal, so that the signal transmitting device can analyze various infrared remote control signals.
Referring to fig. 1, fig. 1 is a wireless transmission system 100 according to an embodiment of the present invention, the wireless transmission system 100 includes a signal receiving apparatus 10 and a signal transmitting apparatus 20. The signal receiving device 10 and the playing device 50 are connected in communication through a transmission line to realize the transmission of signals between the signal receiving device 10 and the playing device 50. The signal transmitting apparatus 20 is communicatively connected to the source device 30 through a transmission line to realize signal transmission between the signal transmitting apparatus 20 and the source device 30.
Referring to fig. 2A, the signal receiving apparatus 10 includes an infrared receiver 101, a first HDMI interface 102, a first communication module 103, a sampling module 104, and a data processing module 105.
The infrared receiver 101 is configured to receive an infrared remote control signal sent by the infrared remote control device 40 and convert the infrared remote control signal into an electrical signal, where the electrical signal at least includes demodulation control data and carrier frequency data of the infrared remote control device 40.
The infrared receiver 101 converts the infrared remote control signal transmitted from the infrared remote control device 40 into an electric signal having a carrier frequency of 30khz to 60 khz.
The sampling module 104 is electrically connected to the infrared receiver 101, and is configured to obtain an electrical signal converted from the infrared remote control signal by the infrared receiver 101, and send the electrical signal to the first communication module 103.
In some embodiments, the sampling module 104 fully samples the electrical signal at a sampling frequency greater than 120khz to obtain a fully sampled electrical signal, and sends the fully sampled electrical signal to the first communication module 103, so as to send the fully sampled electrical signal to the signal transmitting apparatus 20 through the first communication module 103 in a wireless communication manner, so that the signal transmitting apparatus 20 generates an infrared remote control signal according to the fully sampled electrical signal and sends the infrared remote control signal to the source device 30, so as to control the source device 30 to output a corresponding video signal, thereby implementing switching of video signal output.
In some embodiments, the sampling module 104 fully samples the electrical signal at a sampling frequency greater than 120khz to obtain a fully-sampled electrical signal, to obtain carrier frequency data of the fully-sampled electrical signal and demodulation control data from the fully-sampled electrical signal; the sampling module 104 further generates the sampling data signal according to the carrier frequency data and the demodulation control data, and outputs the sampling data signal to the first communication module 103. The sampled data signal transmits less data than a fully sampled output layer.
Referring to fig. 2B, the infrared receiver 101 converts the infrared remote control signal into an electrical signal C, the sampling module 104 fully samples the electrical signal at a sampling frequency greater than 120khz, and demodulates the electrical signal C to obtain a binary coded signal a and a pulse signal B, wherein the demodulated control data can be obtained according to the binary coded signal a, and the carrier frequency data can be obtained according to the pulse signal B.
The first communication module 103 is electrically connected to the sampling module 104, and is configured to convert the sampled data signal into a wireless signal, and send the wireless signal to the signal emitting device 20, so that the signal emitting device 20 generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the source device 30. The wireless signal includes demodulation control data and carrier frequency data, and the signal transmitting device 20 generates an infrared remote control signal according to the demodulation control data and the carrier frequency data, that is, restores the wireless signal to the infrared remote control signal.
Preferably, the first communication module 103 is a wireless two-way communication module capable of receiving and transmitting wireless signals, and the wireless communication frequency of the first communication module 103 is 2.404-2.494 Ghz, 5.15-5.825 Ghz, or 57-66 Ghz.
The data processing module 105 is electrically connected to the first communication module 103 and the first HDMI interface 102, and is configured to obtain a video signal forwarded by the first communication module 103 from the signal transmitting device 20, and send the video signal to the playing device 50 through the first HDMI interface 102, where the video signal is output to the signal transmitting device 10 by the source device 30 in response to the infrared remote control signal sent by the signal transmitting device 20.
Referring to fig. 3, the signal receiving apparatus 20 includes a second communication module 201, a data buffer module 202, a second HDMI interface 203, and an infrared transmitter 204. The data buffer module 202 is electrically connected to the second communication module 201, the second HDMI interface 203, and the infrared transmitter 204.
The second communication module 201 is a bidirectional wireless communication module, and is configured to perform wireless communication connection with the signal receiving apparatus 10, that is, to receive a wireless signal converted from the infrared remote control signal sent by the first communication module 103.
The infrared transmitter 204 generates an infrared remote control signal according to the wireless signal, and transmits the infrared remote control signal to the source device 30, so that the signal device 30 receives and analyzes the infrared remote control signal, where the infrared remote control signal includes video signal information to be output by the source device 30, so that the source device 30 outputs a video signal corresponding to the infrared remote control signal.
The data buffer module 202 is configured to receive the video signal sent by the source device 30, and send the video signal to the signal receiving apparatus 10 through the second communication module 201, so that the signal receiving apparatus 10 outputs the video signal to the playback device 50 through the second HDMI interface 203.
Because the signal transmitting device is connected with the information source equipment, the signal receiving device is connected with the playing equipment, and the signal transmitting device is connected with the signal receiving device through wireless communication, signals output by the information source equipment can be transmitted to the signal receiving device through wireless transmission, and the problem of space limitation of a traditional wired transmission mode of the information source equipment and the player is effectively solved.
When a user wants to switch a video signal output from the source device 30, an infrared remote control signal is transmitted to the signal receiving apparatus 10 through the infrared remote control apparatus 40 adapted to the source device 30, and the signal receiving apparatus 10 receives the infrared remote control signal through the infrared receiver 101 and converts the infrared remote control signal into an electric signal. The sampling module 104 samples the electrical signal to obtain a sampled data signal and sends the sampled data signal to the first communication module 103, the first communication module 103 sends and converts the sampled data signal into a wireless signal, and sends the wireless signal to the signal transmitting apparatus 20, the signal transmitting apparatus 20 receives the wireless signal through the second communication module 201, and forwards the wireless signal to infrared transmitter 204, infrared transmitter 204 generates an infrared remote control signal from the wireless signal, and transmits the infrared remote control signal to the source device 30, the source device 30 receives the infrared remote control signal and analyzes the infrared remote control signal, so as to output a corresponding video signal according to the infrared remote control signal, and send the video signal to the data buffer module 202 through the second HDMI interface 203, and the data buffer module 202 sends the video signal to the signal receiving apparatus 10 through the second communication module 201 in a wireless communication manner. After receiving the video signal, the signal receiving apparatus 10 outputs the video signal to the playback device 50, thereby completing signal switching of the playback device 50.
Preferably, the source device 30 outputs a video signal having a resolution of at least 480p and a frame rate of at least 24 fps.
Referring to fig. 4, fig. 4 is a signal switching method according to an embodiment of the present invention, the signal switching method is applied to a signal receiving apparatus 10 of a wireless transmission system 100, the wireless transmission system 100 further includes a signal transmitting apparatus 20, the signal receiving apparatus 20 is in communication connection with a playing device 50 through a transmission line, the signal transmitting apparatus 20 is in communication connection with a source device 30 through a transmission line, the signal receiving apparatus 10 includes an infrared receiver 101 and a first communication module 103, and the signal switching method includes steps S101 to S105:
step S101: and the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal.
When the user switches the output video signal of the source device 30, the infrared remote control device 40 transmits a remote control signal to the signal receiving device 10, and the signal receiving device 10 receives the infrared remote control signal through the infrared receiver 101 and converts the received infrared remote control signal into an electric signal.
Preferably, the infrared receiver 101 converts the infrared remote control signal into an electrical signal having a carrier frequency of 30khz-60 khz.
Step S102: and sampling the electric signal to obtain a sampling data signal, and sending the sampling data signal to the first communication module.
The signal transmitting device 10 performs full sampling on the electrical signal at a sampling frequency greater than 120khz to obtain a full-sampling electrical signal, and transmits the full-sampling electrical signal to the first communication module 103, so as to transmit the full-sampling electrical signal to the signal transmitting device 20 through the first communication module 103 in a wireless communication manner, so that the signal transmitting device 20 generates an infrared remote control signal according to the full-sampling electrical signal and transmits the infrared remote control signal to the source device 30, so as to control the source device 30 to output a corresponding video signal, thereby implementing switching of video signal output.
Step S103: and converting the sampling data signal into a wireless signal by using the first communication module, and sending the wireless signal to the signal transmitting device so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment.
The first communication module 103 converts the received sampling data signal into a wireless signal, and sends the wireless signal to the signal transmitting apparatus 20, so that the signal transmitting apparatus 20 generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the source device 30, thereby implementing the change of the output video signal by the source device 30.
Wherein, the first communication module 103 is a wireless two-way communication module; the wireless communication frequency of the first communication module 103 is 2.404-2.494 Ghz, 5.15-5.825 Ghz or 57-66 Ghz.
That is, the first communication module 103 converts the received electrical signal into a wireless signal with a carrier frequency of 2.404-2.494 Ghz, 5.15-5.825 Ghz, or 57 Ghz-66 Ghz.
Step S104: the method comprises the steps of obtaining a video signal forwarded by a first communication module from a signal transmitting device, and transmitting the video signal to the playing equipment through a first HDMI, wherein the video signal is an infrared remote control signal transmitted by a signal source equipment response signal transmitting device and is output to the signal transmitting device.
The signal receiving apparatus 10 obtains the video signal forwarded by the first communication module 103 from the signal transmitting apparatus 20, and sends the video signal to the playing device 50 through the first HDMI interface 102, wherein the video signal is output to the signal transmitting apparatus 10 by the source device 30 in response to the infrared remote control signal sent by the signal transmitting apparatus 20 and sent by the infrared remote control apparatus 40 and forwarded by the signal receiving apparatus 10 and the signal transmitting apparatus 20.
Preferably, the source device 30 outputs a high definition video signal having a resolution of at least 480p and a frame rate of at least 24 fps.
Referring to fig. 5, fig. 5 is a signal switching method applied to a signal transmitting device 20 of a wireless transmission system 100 according to another embodiment of the present invention, where the signal transmitting device 20 includes a second communication module 201 and an infrared transmitter 204, and the signal switching method includes steps S201 to S203.
Wherein, step S201: and receiving a wireless signal sent by the signal receiving device, wherein the wireless signal is generated by the signal receiving device responding to an infrared remote control signal sent by an infrared remote control device.
The signal transmitting device 20 receives a wireless signal sent by the signal receiving device 10 through the second communication module 201, the wireless signal is an infrared remote control signal sent by the infrared remote control device 40 received by the signal receiving device 10, converts the infrared remote control signal into an electric signal, performs full sampling on the electric signal to obtain a full sampling electric signal, and sends the full sampling electric signal to the first communication module to be sent to the signal transmitting device through the first communication module in a wireless communication mode.
Preferably, signal emitting device 20 fully samples the electrical signal at a sampling frequency greater than 120khz to obtain a fully sampled electrical signal.
Step S202: and converting the wireless signal into an infrared remote control signal by using the infrared transmitter, and transmitting the infrared remote control signal to the information source equipment so that the information source equipment responds to the infrared remote control signal to transmit a video signal to the signal transmitting device.
After receiving the wireless signal through the second communication module 201, the signal transmitting apparatus 10 generates an infrared remote control signal from the wireless signal through the infrared transmitter 204, and transmits the infrared remote control signal to the source device 30 through the infrared transmitter 204, so that the source device 30 outputs a corresponding video signal according to the infrared remote control signal.
Step S203: and receiving the video signal sent by the information source equipment, and sending the video signal to a signal receiving device through a second communication module so that the signal receiving device outputs the video signal to the playing equipment.
The signal transmitting device 20 receives a video signal transmitted by the source device 30, and transmits the video signal to the signal receiving device 10 through the second communication module 201, so that the signal receiving device 10 outputs the video signal to the playing device 50, wherein the video signal is generated by the source device 30 in response to an infrared remote control signal transmitted by the signal transmitting device 20.
Referring to fig. 6, in some embodiments, the present invention further provides a signal receiving apparatus 10, the signal receiving apparatus 10 is applied to a wireless transmission system 100, the wireless transmission system 100 further includes a signal transmitting apparatus 20, the signal receiving apparatus 10 is communicatively connected to a playing device 50 through a transmission line, the signal transmitting apparatus 20 is communicatively connected to a source device 30 through a transmission line, the signal receiving apparatus 10 includes: the device comprises an infrared receiver 101, a first communication module 103, a first HDMI interface 102, a first memory 105, a first processor 104 and a first bus 106. The infrared receiver 101, the first communication module 103, the first HDMI interface 102, and the first memory 105 are connected to the first processor 104 through the first bus 106.
The first memory 105 includes at least one type of readable storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, and the like. The first memory 105 is used for storing a computer-readable signal switching method program.
The first processor 104, which may be a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor or other data Processing chip, may call the program codes stored in the first memory 105 or process data to implement the following steps:
the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal;
sampling the electric signal to obtain a sampling data signal, and sending the sampling data signal to the first communication module;
converting the sampling data signal into a wireless signal by using the first communication module, and sending the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment;
the method comprises the steps of obtaining a video signal forwarded by a first communication module from a signal transmitting device, and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by a signal source equipment response signal transmitting device and is output to the signal transmitting device.
Preferably, the infrared receiver converts the infrared remote control signal into an electric signal with a carrier frequency of 30-60 khz;
referring to fig. 7, in some embodiments, the present invention further provides a signal transmitting apparatus 20, the signal transmitting apparatus 20 is applied to a wireless transmission system 100, the wireless transmission system 100 further includes a signal receiving apparatus 10, the signal receiving apparatus 10 is communicatively connected to a playing device 50 through a transmission line, the signal transmitting apparatus 20 is communicatively connected to a source device 30 through a transmission line, the signal transmitting apparatus 20 includes: an infrared transmitter 204, a second communication module 201, a second HDMI interface 203, a second memory 205, a second processor 202, and a second bus 206. The infrared transmitter 204, the second communication module 201, the second HDMI interface 203, and the second memory 205 are connected to the second processor 202 through a second bus 206.
The second memory 205 includes at least one type of readable storage medium including a flash memory, a hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, and the like. The second memory 205 is used for storing a computer-readable signal switching method program.
The second processor 202, which may be a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor or other data Processing chip, may call the program code stored in the second memory 205 or process data to implement the following steps:
receiving a wireless signal sent by a signal receiving device, wherein the wireless signal is generated by the signal receiving device responding to an infrared remote control signal sent by an infrared remote control device;
converting the wireless signal into an infrared remote control signal by using the infrared transmitter, and transmitting the infrared remote control signal to the information source equipment so that the information source equipment responds to the infrared remote control signal to transmit a video signal to the signal transmitting device;
and receiving the video signal sent by the information source equipment, and sending the video signal to a signal receiving device through a second communication module so that the signal receiving device outputs the video signal to the playing equipment.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A signal receiving apparatus applied to a wireless transmission system, wherein the wireless transmission system further includes a signal transmitting apparatus, the signal receiving apparatus is in communication connection with a playing device through a transmission line, the signal transmitting apparatus is in communication connection with an information source device through a transmission line, and the signal receiving apparatus includes: the device comprises an infrared receiver, a first HDMI interface, a sampling module, a data processing module and a first communication module;
the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal;
the sampling module is used for sampling the electric signal to obtain a sampling data signal and sending the sampling data signal to the first communication module;
the first communication module converts the sampling data signal into a wireless signal and sends the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment;
the data processing module is used for acquiring a video signal forwarded by the first communication module from the signal transmitting device and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by the signal source equipment response signal transmitting device and is output to the signal transmitting device;
the sampling module samples the electric signal at a sampling frequency greater than 120Khz to obtain a fully-sampled electric signal, so as to obtain carrier frequency data and demodulation control data of the fully-sampled electric signal according to the fully-sampled electric signal; the sampling module is also used for generating the sampling data signal according to the carrier frequency data and the demodulation control data and outputting the sampling data signal to the first communication module; the acquiring carrier frequency data and demodulation control data of the fully sampled electrical signal according to the fully sampled electrical signal includes: and demodulating the full-sampling electric signal to obtain a binary coded signal and a pulse signal, acquiring the demodulation control data according to the binary coded signal, and acquiring the carrier frequency data according to the pulse signal.
2. The signal receiving apparatus of claim 1, wherein: the first communication module is a wireless two-way communication module;
the wireless communication frequency of the first communication module is 2.404-2.494 Ghz, 5.15-5.825 Ghz or 57-66 Ghz.
3. A wireless transmission system is characterized by comprising a signal transmitting device and a signal receiving device, wherein the signal receiving device is in communication connection with a playing device through a transmission line, and the signal transmitting device is in communication connection with an information source device through the transmission line;
the signal receiving apparatus includes: the device comprises an infrared receiver, a first HDMI interface, a sampling module, a data processing module and a first communication module;
the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal;
the sampling module is used for sampling the electric signal to obtain a sampling data signal and sending the sampling data signal to the first communication module;
the first communication module converts the sampling data signal into a wireless signal and sends the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment;
the data processing module is used for acquiring a video signal forwarded by the first communication module from the signal transmitting device and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by the signal source equipment response signal transmitting device and is output to the signal transmitting device;
the sampling module samples the electric signal at a sampling frequency greater than 120Khz to obtain a fully-sampled electric signal, so as to obtain carrier frequency data and demodulation control data of the fully-sampled electric signal according to the fully-sampled electric signal; the sampling module is also used for generating the sampling data signal according to the carrier frequency data and the demodulation control data and outputting the sampling data signal to the first communication module; the acquiring carrier frequency data and demodulation control data of the fully sampled electrical signal according to the fully sampled electrical signal includes: and demodulating the full-sampling electric signal to obtain a binary coded signal and a pulse signal, acquiring the demodulation control data according to the binary coded signal, and acquiring the carrier frequency data according to the pulse signal.
4. The wireless transmission system according to claim 3, wherein the signal transmitting means comprises: the system comprises an infrared transmitter, a second communication module and a data cache module;
the second communication module is used for receiving the wireless signal sent by the first communication module and sending the wireless signal to the infrared transmitter;
the infrared transmitter generates an infrared remote control signal according to the wireless signal and transmits the infrared remote control signal to the information source equipment, so that the information source equipment responds to the infrared remote control signal and transmits a video signal to the signal transmitting device;
the data caching module is used for receiving the video signal sent by the information source equipment and sending the video signal to the signal receiving device through the second communication module, so that the signal receiving device outputs the video signal to the playing equipment.
5. The wireless transmission system of claim 4, wherein: the signal transmitting device further comprises a second HDMI interface, and the signal transmitting device is in communication connection with the information source equipment through the second HDMI interface by using a transmission line.
6. A signal switching method applied to the signal receiving apparatus according to claim 1, wherein the signal receiving apparatus includes an infrared receiver, a first HDMI interface, and a first communication module, and the signal switching method includes:
the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal;
sampling the electric signal to obtain a sampling data signal, and sending the sampling data signal to the first communication module; the sampling the electrical signal to obtain a sampled data signal and sending the sampled data signal to the first communication module, comprising: sampling the electric signal at a sampling frequency greater than 120Khz to obtain a full-sampling electric signal, acquiring carrier frequency data and demodulation control data of the full-sampling electric signal according to the full-sampling electric signal, generating a sampling data signal according to the carrier frequency data and the demodulation control data, and outputting the sampling data signal to the first communication module; the acquiring carrier frequency data and demodulation control data of the fully sampled electrical signal according to the fully sampled electrical signal includes: demodulating the full-sampling electrical signal to obtain a binary coded signal and a pulse signal, acquiring the demodulation control data according to the binary coded signal, and acquiring the carrier frequency data according to the pulse signal;
converting the sampling data signal into a wireless signal by using the first communication module, and sending the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment;
the method comprises the steps of obtaining a video signal forwarded by a first communication module from a signal transmitting device, and transmitting the video signal to the playing equipment through the first HDMI, wherein the video signal is an infrared remote control signal transmitted by a signal source equipment response signal transmitting device and is output to the signal transmitting device.
7. A signal receiving apparatus applied to a wireless transmission system, wherein the wireless transmission system further includes a signal transmitting apparatus, the signal receiving apparatus is in communication connection with a playing device through a transmission line, the signal transmitting apparatus is in communication connection with an information source device through a transmission line, and the signal receiving apparatus includes:
an infrared receiver; a first communication module;
a first HDMI interface;
a first memory storing a computer readable program; and
a first processor, which when invoked by the computer readable program performs the method of:
the infrared receiver is used for receiving an infrared remote control signal sent by an infrared remote control device and converting the infrared remote control signal into an electric signal;
sampling the electric signal to obtain a sampling data signal, and sending the sampling data signal to the first communication module;
converting the sampling data signal into a wireless signal by using the first communication module, and sending the wireless signal to the signal transmitting device, so that the signal transmitting device generates an infrared remote control signal according to the wireless signal and sends the infrared remote control signal to the information source equipment;
the method comprises the steps that a video signal forwarded by a first communication module from a signal transmitting device is obtained, and the video signal is sent to playing equipment through a first HDMI, wherein the video signal is an infrared remote control signal sent by a signal source equipment response signal transmitting device and is output to the signal transmitting device;
the sampling the electrical signal to obtain a sampled data signal and sending the sampled data signal to the first communication module, comprising: sampling the electrical signal at a sampling frequency greater than 120Khz to obtain a fully sampled electrical signal, so as to obtain carrier frequency data and demodulation control data of the fully sampled electrical signal according to the fully sampled electrical signal; the sampling data signal is generated according to the carrier frequency data and the demodulation control data and is output to the first communication module; the acquiring carrier frequency data and demodulation control data of the fully sampled electrical signal according to the fully sampled electrical signal includes: and demodulating the full-sampling electric signal to obtain a binary coded signal and a pulse signal, acquiring the demodulation control data according to the binary coded signal, and acquiring the carrier frequency data according to the pulse signal.
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| JPH1028297A (en) * | 1996-07-12 | 1998-01-27 | Toshiba Corp | Bi-directional remote controller |
| CN1607736A (en) * | 2003-10-14 | 2005-04-20 | 上海国皓电子有限公司 | Wireless transmission and controlling apparatus for video/ audio, multi-system TVs |
| CN1607780A (en) * | 2003-10-16 | 2005-04-20 | 上海富邦信息技术有限公司 | Wireless audio-video conversion transmitting-receiving system and method thereof |
| CN201145949Y (en) * | 2007-04-27 | 2008-11-05 | 上海贝岭矽创微电子有限公司 | Household image and sound wireless transmission device with tamper-proof function |
| CN101547027A (en) * | 2008-03-27 | 2009-09-30 | 昭通科技股份有限公司 | Video and audio radio broadcasting device |
| CN202872986U (en) * | 2012-10-31 | 2013-04-10 | 湖南航天卫星通信科技有限公司 | Double-input wireless high definition transmission system |
| CN203457141U (en) * | 2013-05-30 | 2014-02-26 | 中山市鑫皇电子有限公司 | Wireless data transmission system and video and audio system |
| CN207200865U (en) * | 2017-08-30 | 2018-04-06 | 深圳市朗强科技有限公司 | A kind of HDMI wireless transmitting systems, dispensing device and reception device |
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