TWM539197U - Video infrared-ray extending device, transmitting extender and receiving extender thereof - Google Patents

Abstract

A video infrared-ray extending device comprises a transmitting extender and a receiving extender. The transmitting extender through a transmission line coupled to the receiving extender. The transmitting extender is coupled to a plurality of video sources, and the receiving extender is coupled to at least one displayer. The receiving unit of the transmitting extender receives a first source remote signal, and then the first processing unit identifies the first source remote signal and controls a video processing switching unit to switch one of those video sources. The receiving unit of the transmitting extender receives a first distant remote signal. The first processing unit identifies the first distant remote signal, then a first extending module transmits the first distant remote signal to the receiving extender, and a second transmitting unit outputs the first distant remote signal to the displayer.

Description

Image infrared extension device and its emitter end extender and receiver end extender

The present invention provides an image infrared extending device and a transmitting end extender and a receiving end extender thereof, in particular, an image infrared extending device for transmitting a remote control signal, and a transmitting end extender and a receiving end extender thereof.

In recent years, due to the rapid development of multimedia audio-visual technology and video extension technology, various video transmission extension devices and video playback devices with different functions have appeared on the market. In order to improve the convenience and flexibility of the consumer in viewing video, how to improve the video transmission mechanism between the transmitter end extender and the receiver end extender in the extension device is very important.

Among them, whether it is to switch the same display device to display video signals from different audio and video input sources, or to control the receiving device from the transmitting end, or to control the video input source of the transmitting end from the receiving end, there is often considerable inconvenience. Thereby, the convenience of the image infrared stretching device is affected. Therefore, it is inconvenient to use.

The present invention provides an image infrared extending device, a transmitter end extender and a receiving end extender, which can enhance the ease of use of the audio and video playback and display by reading and recognizing the design of the remote control signal.

The present invention proposes an image infrared extending device having a transmitting end extender and a receiving end extender, and the transmitting end extender is coupled to the receiving end through a transmission line. The transmitter end extender is coupled to the plurality of video input sources, and the receiver end extender is coupled to the at least one display device. The transmitter end extender has an image processing switching unit, a first extension module, a processing unit, a first receiving unit and a first transmitting unit, and the image processing switching unit is coupled to the processing unit and the first extending module. The receiving unit is coupled to the processing unit and the first extending module. The first transmitting unit is coupled to the processing unit and the first extending module. The first extending module is coupled to the transmission line. The receiving end extender has a second extending module and a a second receiving unit and a second transmitting unit, the second receiving unit is coupled to the second extending module, the second transmitting unit is coupled to the second extending module, and the second extending module is coupled to the transmission line; wherein the transmitting end is extended The first receiving unit of the device receives one or a combination of the first input source remote control signal and the first remote remote control signal, and receives a first input source remote control signal at the first receiving unit of the transmitter end extender, and the processing unit identifies Outputting a first input source remote control signal and controlling the image processing switching unit, causing the image processing switching unit to switch to one of the audio and video input sources; at the transmitting end extender A receiving unit receives a first remote control signal, and the processing unit recognizes the first remote control signal, and the first extension module transmits the first remote control signal to the second extension module of the receiver extender, and Outputting the first remote control signal to the display device via the second transmitting unit; wherein the second receiving unit of the receiving end extender simultaneously receives one or a combination of the second input source remote control signal and the second remote remote control signal The second receiving unit of the receiving end extender receives a second input source remote control signal, and transmits the second input source remote control signal to the first extension module of the transmitter end extender through the second extension module, and the processing unit is configured according to the second Inputting a remote control signal to control the image processing switching unit, causing the image processing switching unit to switch to one of the audio and video input sources; and receiving, by the second receiving unit of the receiving end extender, a second remote remote control signal by the second extended mode The group transmits the second remote control signal to the first extension module of the transmitter extender, and outputs the second remote control signal to the shadow through the first transmitting unit One of the input sources; wherein, the first transmitting unit and the second transmitting unit are respectively infrared emitters, and the first receiving unit and the second receiving unit are respectively infrared receivers, and the first input source remote control signal and the first remote end Remote control signal, second input source The remote control signal and the second remote control signal are respectively infrared remote control signals.

The present invention provides a transmitter end extender coupled to a receiver end extender through a transmission line, the transmitter end extender coupled to a plurality of video input sources, the receiver end extender coupled to at least one display device, and the transmitter end extender including an image Processing a switching unit, a first extension module, a processing unit, a first receiving unit, and a first transmitting unit. The first extension module is coupled to the image processing switching unit. The processing unit is coupled to the image processing switching unit. The first receiving unit is coupled to the processing unit and the first extension module. The first transmitting unit is coupled to the processing unit and the first extending module. The first receiving unit of the transmitting end extender simultaneously receives one or a combination of the first input source remote control signal and the first remote remote control signal, and receives a first input source remote control at the first receiving unit of the transmitting end extender. The signal processing unit recognizes the first input source remote control signal and controls the image processing switching unit to cause the image processing switching unit to switch to one of the video input sources; the first receiving unit of the transmitting end extender receives a first far The first remote control signal is transmitted by the first extension module to the second extension module of the receiver extension device, and the first extension module is received by the first extension module. The second transmitting unit outputs the first remote control signal to the display device; wherein the first transmitting unit is an infrared emitter, the first receiving unit is an infrared receiver, and the first input source remote control signal and the first remote remote control signal are respectively Infrared remote control signal.

The present invention provides a receiving end extender coupled to a transmitting end extender through a transmission line, the transmitting end extender is coupled to a plurality of audio and video input sources, the receiving end extender is coupled to at least one display device, and the receiving end extender includes a first a second extension module, a second receiving unit and a second transmitting unit. The second receiving unit is coupled to the second extension module. The second transmitting unit is coupled to the second extending module. The second receiving unit of the receiving end extender simultaneously receives one or a combination of the second input source remote control signal and the second remote remote control signal, and the second receiving unit of the receiving end extender receives a second input source remote control. And transmitting, by the second extension module, the second input source remote control signal to the first extension module of the transmitter extender, and the processing unit remotely controls the signal according to the second input source Controlling the image processing switching unit, causing the image processing switching unit to switch to one of the video input sources; the second receiving unit of the receiving end extender receives a second remote control signal, and the second extension module transmits the second far Transmitting the remote control signal to the first extension module of the transmitter extender, and outputting the second remote control signal to one of the audio and video input sources via the first transmitting unit; wherein the second transmitting unit is an infrared emitter, and the second The receiving unit is an infrared receiver, and the second input source remote control signal and the second remote remote control signal are respectively infrared remote control signals.

The specific means of this creation is to utilize an image infrared stretching device and its emitting end extender and receiving end extender. Wherein, when the processing unit of the transmitter end extender recognizes the first input source remote control signal, the image processing switching unit switches to one of the audio and video input sources; and the processing unit recognizes the first remote remote control signal, A remote remote control signal is transmitted to the receiver extender and outputs a first remote remote control signal to the display device. In addition, the second receiving unit of the receiving end extender receives a second input source remote control signal, and the second input source remote control signal is transmitted to the transmitting end extender, and the processing unit controls the image according to the second input source remote control signal. Processing a switching operation of the switching unit; receiving, by the second receiving unit, a second remote control signal, the second remote control signal is transmitted to the transmitter extender, and outputting the second remote control signal to the first transmitting unit Some of these video input sources. This creation can indeed improve the ease of use of the image infrared display device and its transmitter end extender and receiver end extender for audio and video playback and display.

The above summary and the following examples are intended to further illustrate the technical means and the efficiencies of the present invention, and the embodiments and drawings are merely provided for reference and are not intended to limit the present invention.

1‧‧‧Image infrared extension device

TX‧‧‧Transmitter Extender

10‧‧‧Processing unit

12‧‧‧Image Processing Switching Unit

14‧‧‧First extension module

AT1‧‧‧first launch unit

AR1‧‧‧ first receiving unit

RX‧‧‧Transmitter Extender

20‧‧‧Second extension module

AT2‧‧‧second launch unit

AR2‧‧‧second receiving unit

D1‧‧‧ display equipment

S1~S3‧‧‧Video input source

R1~R4‧‧‧Remote Control

TL‧‧‧ transmission line

FIG. 1 is a functional block diagram of an image infrared extending device according to an embodiment of the present invention.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements or signals, etc., such elements or signals are not limited by such terms. These terms are used to distinguish one element from another, or a signal and another. In addition, as used herein, the term "or" may include all combinations of any one or more of the associated listed items.

FIG. 1 is a functional block diagram of an image infrared extending device according to an embodiment of the present invention. Please refer to Figure 1. An image infrared extending device 1 has a transmitting end extender TX and a receiving end extender RX. In practice, the transmitter extender TX is coupled to the receiver extender RX via a transmission line TL. Extender transmitter TX coupled to a plurality of video input sources S1 ^~ S3, receiver RX is coupled to an end extending at least one display device D1.

These audio and video input sources S1 ^~ S3 are, for example, DVD player, Blu-ray player, MP4 player, USB player, computer host, notebook computer or multimedia player. The display device D1 is, for example, a television, a screen, an LCD liquid crystal display, a projector or other display. Thereby, the video signal output by each of the video input sources S1 ^to S3 can be displayed through the image infrared extending device 1 to extend to the display device D1 at the rear end. This embodiment does not limit the aspect of the image infrared stretching device 1.

For convenience of explanation, in the present embodiment, three video input source lines S1 ^~ S3 will be described, the three video input sources S1 ^~ S3 is a DVD player, a laptop computer and a host, respectively. In other embodiments, the number of audio input sources S1 ^~ S3 is, for example, two, four, five or more. Further, the number of display devices D1 is, for example, one, two or more. This embodiment does not limit the input video source S1 ^~ S3 and the number of aspects of display device D1.

In addition, this embodiment is described by four remote controllers R1 ^to R4. The first and second remote controllers R1 and R2 are disposed at the transmitting end. The third and fourth remote controllers R3 and R4 are disposed at the receiving end. In practice, the first remote controller R1 and the third remote controller R3 are respectively a remote controller that switches the input source. The second remote controller R2 is a remote controller of a remote display device D1. The fourth remote controller R4 is a remote controller that remotely controls the video input sources S1 ^to S3.

For example, the first remote controller R1 generates a first input source remote control signal. The second remote controller R2 generates a first remote remote control signal. The third remote controller R3 generates a second input source remote control signal. The fourth remote controller R4 generates a second remote control signal. The first input source remote control signal and the second input source remote control signal are control signals for indicating the switching operation of the image processing switching unit 12, respectively. The first remote control signal is a control signal for indicating the display device D1. The second remote control signal is a control signal for indicating the audio and video input sources S1 ^to S3.

In detail, the transmitter end extender TX has an image processing switching unit 12, a first extension module 14, a processing unit 10, a first receiving unit AR1, and a first transmitting unit AT1. In practice, the image processing switch unit 12 is coupled to three input video source S1 ^~ S3, the processing unit 10 and the first extension module 14. The first receiving unit AR1 is coupled to the processing unit 10 and the first extension module 14 . The first transmitting unit AT1 is coupled to the processing unit 10 and the first extension module 14. The first extension module 14 is coupled to the transmission line TL.

The first transmitting unit AT1 is, for example, a transmitter fixed to the transmitter end extender TX station, or an external extension transmitter; the first receiving unit AR1 is, for example, fixed to the transmitting end extender TX machine. The receiver is either an external extension receiver.

In practice, the image processing switching unit 12 is implemented, for example, by a switch, a switching circuit, or a switching firmware. An image processing switching unit 12 for switching the one of the three video input sources S1 ^~ S3 is, for transmission to a first extending module 14. For example, the video processing switching unit 12 first transmits the audio and video signals of the video and audio input source S1 of the DVD player to the first extension module 14, and the audio and video signals of the audio and video input sources S2 and S3 of the computer host and the notebook are not It can be transmitted to the first extension module 14. When the image processing switching unit 12 receives the switching instruction of the processing unit 10, the image processing switching unit 12 switches to the state in which the video signal of the video input source S2 of the computer host can be transmitted to the first extension module 14, and the DVD is played. The audio and video signals of the audio and video input sources S1 and S3, such as the notebook and the notebook, are not transmitted to the first extension module 14.

Processing unit 10, for example, through a CPU processor, controller, MCU, or microprocessor To achieve. The processing unit 10 is configured to read, recognize, or determine a remote control signal, and process each component, signal transmission, calculation, or operation between the components. For example, when the first remote controller R1 outputs the first input source remote control signal to the transmitter extender TX, the processing unit 10 can read and recognize the first input source remote control signal; or when the second remote controller R2 outputs the first When the remote control signal is sent to the transmitter extender TX, the processing unit 10 can read and recognize the first remote control signal.

Next, the receiver end extender RX has a second extension module 20, a second receiving unit AR2, and a second transmitting unit AT2. In practice, the second receiving unit AR2 is coupled to the second extension module 20. The second transmitting unit AT2 is coupled to the second extension module 20 . The second extension module 20 is coupled to the transmission line TL. The transmission line TL is a twisted pair of CAT5, CAT5e, CAT6 or CAT7 specifications.

The second transmitting unit AT2 is, for example, a transmitter fixed to the receiving end extender RX machine, or an external extension transmitter; the second receiving unit AR2 is, for example, a fixed end extension RX machine. The receiver is either an external extension receiver.

In detail, the first and second extension modules 14 and 20 are respectively realized by, for example, an audio/video extender circuit, an audio/video extender firmware, a video and audio transceiver circuit, a video/audio transmission and firmware, a video transmission circuit, or a video transmission firmware. In addition, the first transmitting unit AT1 and the second transmitting unit AT2 are respectively infrared ray emitters. The first receiving unit AR1 and the second receiving unit AR2 are respectively infrared receivers.

The first receiving unit AR1 of the transmitting end extender TX receives a first input source remote control signal. The processing unit 10 recognizes the first input source remote control signal and controls the image processing switching unit 12 to cause the image processing switching unit 12 to switch to one of the video input sources S1 ^to S3. The first receiving unit AR1 of the transmitting end extender TX receives a first remote remote control signal, and the processing unit 10 recognizes the first remote remote control signal, and the first remote control unit 14 transmits the first remote remote control signal to the receiving. The second extension module 20 of the end extender RX outputs the first remote remote control signal to the display device D1 via the second transmitting unit AT2.

Briefly, the user at the transmitter end extender TX can switch one of the plurality of video input sources S1 ^to S3 through the first remote controller R1, so that the selected video input sources S1 ^to S3 are transmitted to the display device at the back end. D1 output. In addition, the user at the transmitter end extender TX can control the power on or off of the display device D1, the aspect ratio, the display brightness, the volume, or other settings of the television audio and video through the second remote controller R2.

For example, a user at the transmitter end extender TX operates the first remote controller R1. The first receiving unit AR1 receives the first input source remote control signal, and transmits the first input source remote control signal to the first extension module 14. The processing unit 10 reads and recognizes the first input source remote control signal. Therefore, the processing unit 10 controls the image processing switching unit 12 to switch one of the video input sources S1 ^to S3 to the display device D1 at the rear end.

The user at the transmitter end extender TX operates the second remote controller R2. The second remote controller R2 is, for example, a remote controller of a television. Therefore, the first receiving unit AR1 receives the first remote control signal and transmits the first remote control signal to the first extension module 14. The first extension module 14 transmits the first remote control signal to the second extension module 20 of the receiver extension RX, and is transmitted by the second extension module 20 to the second transmission unit AT2. Therefore, the second transmitting unit AT2 will output the first remote control signal to the television, thereby controlling the video and audio output of the television.

The second receiving unit AR2 of the receiving end extender RX receives a second input source remote control signal, and transmits the second input source remote control signal to the first extension module of the transmitting end extender TX through the second extension module 20 14. The processing unit 10 controls the image processing switching unit 12 according to the second input source remote control signal, so that the image processing switching unit 12 switches to one of the video input sources S1 ^to S3; and the second of the receiving end extender RX. The receiving unit AR2 receives a second remote control signal, and the second extension module 20 transmits the second remote control signal to the first extension module 14 of the transmitter extender TX, and outputs the second through the first transmitting unit AT1. The remote control signal is input ^to one of the video input sources S1 ^to S3.

Briefly, at the receiving end user may extender RX S1 ^~ S3 to one of a plurality of video input sources in which the switching, so that the selected video input source passes through the third remote R3 S1 ^~ S3 transmitted to the rear end of the display device D1 output. Further, the user at the receiving end, RX can extend the video input sources to control one of S1 ^~ S3 which play fast forward through the fourth remote controller R4, rewind, forward or other shuttle play mode.

For example, a user at the receiving end stretcher RX operates the third remote controller R3. The second receiving unit AR2 receives the second input source remote control signal and transmits the second input source remote control signal to the second extension module 20. The second extension module 20 transmits the second input source remote control signal to the first extension module 14 of the transmitter extension extender TX, and is transmitted by the first extension module 14 to the first transmission unit AT1. The processing unit 10 reads and recognizes the second input source remote control signal. Therefore, the processing unit 10 controls the image processing switching unit 12 to switch one of the video input sources S1 ^to S3 to the display device D1 at the rear end.

The user at the receiving end extender RX operates the fourth remote controller R4. The fourth remote controller R4 is, for example, a remote controller of a DVD player. Therefore, the second receiving unit AR2 receives the second remote control signal and transmits the second remote control signal to the second extension module 20. The second extension module 20 transmits the second remote control signal to the first extension module 14 of the transmitter extension extender TX, and is transmitted by the first extension module 14 to the first transmission unit AT1. The processing unit 10 reads and recognizes the second remote control signal, and the second remote control signal is not the input source remote control signal. Therefore, the first transmitting unit AT1 will output the second remote control signal to the DVD player, thereby manipulating the playback operation of the DVD player.

It is worth mentioning that the first input source remote control signal, the first remote remote control signal, the second input source remote control signal and the second remote remote control signal are respectively infrared remote control signals. The first and second input source remote control signals can be implemented by using a specific code or a vendor-encoded code, for example, a 1:3 asynchronous signal coding. Therefore, the processing unit 10 can recognize the input source remote control signal or the remote remote control signal. In addition, in this embodiment, the remote control signal is transmitted in two directions, and in other embodiments, the remote control can be extended in one direction. Signal. This embodiment does not limit the operational aspect of the AV extension device 1.

In summary, the present invention is an image infrared extending device and its transmitting end and receiving end extender. The first receiving unit of the transmitter end extender can receive the first input source remote control signal or the first remote remote control signal. When the processing unit of the transmitter end extender recognizes the first input source remote control signal, the processing unit controls the switching operation of the image processing switching unit, so that one of the audio and video input sources is transmitted to the display device at the back end; The first remote control signal is transmitted to the receiver extender, and the first remote control signal is output to the display device through the second transmitting unit. In addition, the second receiving unit of the receiving end extender can receive the second input source remote control signal or the second remote remote control signal. The second receiving unit of the receiving end extender receives a second input source remote control signal, and the second input source remote control signal is transmitted to the transmitting end extender, and the processing unit controls the image processing switching according to the second input source remote control signal. The switching operation of the unit; receiving, by the second receiving unit, a second remote control signal, the second remote control signal is transmitted to the transmitter extender, and outputting the second remote control signal to the audio and video via the first transmitting unit Enter one of the sources. In this way, the user can control various settings of the display device on the transmitting end, and control one of switching a plurality of audio and video input sources; or the user can control various settings of each audio and video input source at the receiving end, and Manipulates switching one of a plurality of video input sources. This creation can indeed improve the ease of use of the image infrared display device and its transmitter end extender and receiver end extender for audio and video playback and display.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the patent of the present invention.

1‧‧‧Image infrared extension device

TX‧‧‧Transmitter Extender

10‧‧‧Processing unit

12‧‧‧Image Processing Switching Unit

14‧‧‧First extension module

AT1‧‧‧first launch unit

AR1‧‧‧ first receiving unit

RX‧‧‧Transmitter Extender

20‧‧‧Second extension module

AT2‧‧‧second launch unit

AR2‧‧‧second receiving unit

R1~R4‧‧‧Remote Control

D1‧‧‧ display equipment

S1~S3‧‧‧Video input source

TL‧‧‧ transmission line

Claims (7)

An image infrared extending device having a transmitting end extender and a receiving end extender, wherein the transmitting end extender is coupled to the receiving end extender through a transmission line, the transmitting end extender coupling a plurality of audio and video input sources, the receiving The end effector is coupled to the at least one display device. The image infra-red extension device includes: an image processing switching unit, a first extension module, a processing unit, a first receiving unit, and a first transmitting unit. The image processing switching unit is coupled to the processing unit and the first extension module, the first receiving unit is coupled to the processing unit and the first extension module, and the first transmitting unit is coupled to the processing unit and the first An extension module is coupled to the transmission line; the receiver extension has a second extension module, a second receiving unit and a second transmitting unit, and the second receiving unit is coupled to the first a second extension unit coupled to the second extension module, the second extension module being coupled to the transmission line; wherein the first reception of the transmitter end extender Receiving, by the first receiving unit, the first receiving source remote control signal, the processing unit identifying Deriving the first input source remote control signal and controlling the image processing switching unit to cause the image processing switching unit to switch to one of the video input sources; the first receiving unit of the transmitting end extender receives the first a remote control signal, the processing unit identifies the first remote control signal, and the first extension module transmits the first remote control signal to the second extension module of the receiver extender, and The second transmitting unit outputs the first remote control signal to the display device; wherein the second receiving unit of the receiving end extender simultaneously receives a second input source remote control signal and a second remote remote control signal. One or a combination, in The second receiving unit of the receiving end extender receives the second input source remote control signal, and transmits the second input source remote control signal to the first extension module of the transmitting end extender through the second extending module, Controlling, by the processing unit, the image processing switching unit according to the second input source remote control signal, causing the image processing switching unit to switch to one of the video input sources; and receiving, by the second receiving unit of the receiving end extender The second remote control signal transmits the second remote control signal to the first extension module of the transmitter extender by the second extension module, and outputs the second remote end via the first transmission unit The remote control signal is one of the audio and video input sources; wherein the first transmitting unit and the second transmitting unit are respectively infrared emitters, and the first receiving unit and the second receiving unit are respectively infrared receivers, and the first An input source remote control signal, the first remote remote control signal, the second input source remote control signal, and the second remote remote control signal are respectively infrared remote control signals. The image infrared extending device according to claim 1, wherein the transmission line is a twisted pair of CAT5, CAT5e, CAT6 or CAT7 specifications, and each of the audio and video input sources is a VCD player, a DVD player, a Blu-ray player, an MP4 player. , USB player, computer host or laptop, the display device is a TV, screen or projector. The image infrared extending device of claim 1, wherein the first input source remote control signal is generated by a first remote controller, the first remote remote control signal is generated by a second remote controller, and the second input source is remotely controlled. The signal is generated by a third remote controller, and the second remote control signal is generated by the fourth remote controller. The first remote controller and the third remote controller are respectively a remote controller for switching the input source, and the second The remote controller is a remote controller of a remote display device, and the fourth remote controller is a remote controller that remotely controls the input sources. The image infrared extending device of claim 1, wherein the first transmitting unit is a transmitter fixed to the transmitting end extender, or an external extension transmitter; the first receiving unit is fixed to the The receiver of the transmitter end extender is either an external extension receiver. The image infrared extending device of claim 1, wherein the second transmitting unit is a transmitter fixed to the receiving end extender or an external extension transmitter; the second receiving unit is fixed to the The receiver of the receiver end extender is either an external extension receiver. A transmitting end extender is coupled to a receiving end extender through a transmission line, the transmitting end extender is coupled to a plurality of audio and video input sources, and the receiving end extender is coupled to at least one display device, and the transmitting end extender comprises: The image processing switching unit of one of the claims 1 to 5; the first extension module of one of the claims 1 to 5, coupled to the image processing switching unit; and one of the request items 1 to 5 The processing unit is coupled to the image processing switching unit; the first receiving unit of one of the claims 1 to 5 is coupled to the processing unit and the first extension module; and, as in claims 1 to 5 a first transmitting unit coupled to the processing unit and the first extending module; wherein the first receiving unit of the transmitting end extender simultaneously receives the first input source remote control signal and the first remote control One or a combination of the signals, the first receiving unit of the transmitting end extender receives a first input source remote control signal, the processing unit recognizes the first input source remote control signal, and controls the image processing switching unit, cause The image processing switching unit switches to one of the video input sources; the first receiving unit of the transmitter extender receives a first remote control signal, and the processing unit recognizes the first remote control signal. Transmitting the first remote control signal to a second extension module of the receiver extension device, and outputting the first remote control via a second transmitting unit of the receiver extension Signaling to the display device; wherein the first transmitting unit is an infrared emitter, the first receiving unit It is an infrared receiver, and the first input source remote control signal and the first remote remote control signal are respectively infrared remote control signals. A receiving end extender is coupled to a transmitting end extender through a transmission line, the transmitting end extender is coupled to a plurality of audio and video input sources, the receiving end extender is coupled to at least one display device, and the receiving end extender comprises: a second extension module of one of the claims 1 to 5; a second receiving unit, such as one of the claims 1 to 5, coupled to the second extension module; and, as in claims 1 to 5 The second transmitting unit is coupled to the second extending module; wherein the second receiving unit of the receiving end extender simultaneously receives the second input source remote control signal and the second remote remote control signal Or a combination, the second receiving unit of the receiving end extender receives a second input source remote control signal, and transmits the second input source remote control signal to the transmitting end extender through the second extending module An extension module, wherein the processing unit controls the image processing switching unit according to the second input source remote control signal, so that the image processing switching unit switches to one of the audio and video input sources; and the receiving end extender First The receiving unit receives a second remote control signal, and the second extension module transmits the second remote control signal to the first extension module of the transmitter extender, and outputs the first extension unit The second remote control signal is one of the audio and video input sources; wherein the second transmitting unit is an infrared emitter, the second receiving unit is an infrared receiver, and the second input source remote control signal and the second remote end The remote control signals are respectively infrared remote control signals.