TWI393445B - Video signal processing module capable of transforming audio-visual signals into video-phone signals and communication system thereof - Google Patents

Description

Video processing module capable of converting video and audio signals into videophone format signals and related communication systems

The present invention relates to a video processing module and related communication system, and more particularly to a video processing module capable of converting video and audio signals into video telephony format signals and related communication systems.

In recent years, the wireless technology system has been progressing with the development of science and technology. From the early 2G to the current 3.75G, the difference lies in the change of data transmission volume, that is to say, with the continuous expansion of data transmission volume, Related wireless services are no longer based solely on voice communications, but are gradually changing to data communications, thereby enhancing and enhancing the quality and content of wireless transmission services. For example, wireless system service providers are using ever-increasing wireless The transmission bandwidth is used to convert the cable video to wireless video, so that the user can use the wireless connection technology to receive the video content provided by the cable television at any time.

The commonly used method for wireless video viewing is to use Digital Video Broadcasting-Handheld (DVB-H) wireless transmission technology to enable mobile communication devices to be wirelessly connected to the video system server. The image format reduces the amount of data transfer, allowing users to view movies and TV programs that are smooth and undelayed. However, unlike Digital Video Broadcasting-Terrestrial (DVB-T), digital video broadcasting-handset wireless transmission technology requires authorization, that is, users need to pay to watch movies and TV programs. And wireless system service providers need to provide a broadcast system to send video signals, so they can not provide many different movies and TV programs like cable TV.

The present invention provides a video processing module capable of converting an audio and video signal into a video telephony format signal, which is connected to a video output terminal, and the video processing module includes a video compiling device for processing the video output terminal. Transmitting at least one channel signal to generate a first videophone format signal; and a first video communication device electrically connected to the video compiling device, the first video communication device being used for switching via a circuit When the wireless transmission interface is connected to a second video communication device, the first videophone format signal is outputted to the second video communication device.

The present invention further provides a communication system capable of transmitting a videophone format signal, comprising a video output terminal for outputting at least one channel signal; a video processing module connected to the video output terminal, the video processing module a video compiling device for processing the channel signal transmitted by the video output terminal to generate a first video telephony format signal; and a first video communication device electrically connected to the video compiling device a video call device for receiving the first videophone format signal and outputting the first videophone format signal via a circuit switched wireless transmission interface; and a second video communication device via the circuit switched wireless transmission interface connection In the first video communication device, the second video communication device is configured to receive and play the first videophone format signal transmitted by the first video communication device.

Please refer to FIG. 1. FIG. 1 is a functional block diagram of a communication system 10 according to the present invention. The communication system 10 includes a video output 12 (such as a cable television service provider), a video processing module 14, and a second video communication device 16. The video output terminal 12 is configured to output at least one channel signal, such as a channel signal of a cable television. The video processing module 14 is connected to the video output terminal 12. In the embodiment of the present invention, the video processing module 14 can be connected to the video output terminal 12 by wire or wirelessly, that is, the video processing module 14 is It can be connected to the video output terminal 12 by a common video signal line or a wireless transmission interface (such as WiFi). The video processing module 14 includes a video compiling device 18 and a first video communication device 20, and the video compiling device 18 is configured to process the channel signal transmitted from the video output terminal 12 to generate a first video telephony format signal. The first video telephony format signal mentioned in the section is preferably in accordance with the H.264 video standard, which means that the Telecommunication Standardization Sector of International Telecommunication Union (ITU-T) video coding expert group (Video) Coding Experts Group (VCEG) and the International Organization for Standardization/International Electrotechnical Commission (ISO/IEC) Moving Picture Experts Group (MPEG) Joint Video Group (JVT, Joint Video Team) The high compression standard proposed. The first video communication device 20 is electrically connected to the video compiling device 18. The first video communication device 20 is configured to receive the first video telephony format signal and output the first video via a circuit switch wireless transmission interface. The telephone format signal is transmitted to the second video communication device 16, and the circuit switched wireless transmission interface is preferably a 3G or 3.75G wireless transmission interface, that is, a wireless transmission interface having a function of supporting videophone. The second video communication device 16 is connected to the first video communication device 20 via the circuit-switched wireless transmission interface, and the second video communication device 16 is configured to receive and play the first video communication device transmitted by the first video communication device 20. The second video communication device 16 is preferably a video phone or a personal digital assistant (PDA). Further, as can be seen from FIG. 1, the second video communication device 16 includes a user control interface 22 The user control interface 22 is configured to output an audio signal to the video processing module 14 via the circuit-switched wireless transmission interface, so that the video processing module 14 performs a corresponding function according to the audio signal, in the embodiment of the present invention. The user control interface 22 can be a video button of a video phone or a number of assistants, and each button can output a corresponding audio signal.

Next, please refer to FIG. 2, which is a functional block diagram of the video compiling device 18 of FIG. 1 of the present invention. As can be seen from FIG. 2, the video compiling device 18 includes a video demodulation unit 24, a video decoding unit 26, a video telephony encoding unit 28, and a control unit 30. The video demodulation unit 24 is configured to demodulate a plurality of channel signals transmitted from the video output terminal 12 to generate a first channel signal. The video decoding unit 26 is electrically connected to the video demodulation unit 24, and the video decoding unit 26 is configured to process the first channel signal to generate a corresponding one of the first video signals. The video phone encoding unit 28 is electrically connected to the video decoding unit 26, and the video phone encoding unit 28 is configured to encode the first video signal transmitted by the video decoding unit 26 into the first video phone format signal. The control unit 30 is electrically connected to the video telephony encoding unit 28 and the first video communication device 20, and the control unit 30 is configured to control the first video communication device 20 to transmit the first video telephony format signal to the first video telephony interface. The second video communication device 16.

The following is a detailed description of the signal transmission process of the communication system 10. Please refer to FIG. 1 and FIG. 2 simultaneously. When the user wants to use the second video communication device 16 to view the audio channel content provided by the video output terminal 12, the user can use the second video communication device 16 to make a call. The method is wirelessly connected to the first video communication device 20 in the video processing module 14, and the wireless connection method used here is wirelessly connected by using the circuit-switched wireless transmission interface with the function of supporting the videophone, which means a 3G. Or the 3.75G wireless transmission interface, at the same time, the video compiling device 18 transmits the first videophone format signal generated by the video composing device 18 from the first video communication device 20 to the second video communication device via the circuit-switched wireless transmission interface. 16, that is, as described above, when the second video communication device 16 is wirelessly connected to the first video communication device 20 through the circuit-switched wireless transmission interface, the video demodulation unit 24 demodulates the video output terminal 12. a plurality of channel signals to generate the first channel signal, and the video decoding unit 26 processes the first channel signal to generate a corresponding The first video signal, and finally, after the first video signal transmitted by the video decoding unit 26 is encoded into the first video phone format signal by the video phone encoding unit 28, the control unit 30 controls the first video communication device. The first videophone format signal is transmitted to the second video communication device 16 by the circuit-switched wireless transmission interface, so that the user can receive the first videophone format signal through the second video communication device 16. Video and audio content.

In addition, the user can use the second video communication device 16 while the user is wirelessly connected to the first video communication device 20 through the second video communication device 16 to view the audio channel content provided by the video output terminal 12. The user control interface 22 performs channel switching or adjustment of video channel content parameters, such as controlling volume or screen brightness, for example, when the user uses the user control interface 22 of the second video communication device 16 to perform When the channel is switched, if the right direction key or the left direction key of the keyboard button is pressed, the second video communication device 16 transmits one of the corresponding channel switching commands to the first video communication device 20 through the circuit switched wireless transmission interface. Then, the control unit 30 controls the video demodulation unit 24 to demodulate the plurality of channel signals transmitted by the video output terminal 12 to generate a second channel signal, thereby generating a corresponding second videophone format signal, ibid. The second telephone format signal mentioned herein also conforms to the H.264 video standard, and finally the control unit 30 controls the first video communication. The device 20 can transmit the second videophone format signal to the second video communication device 16 via the circuit-switched wireless transmission interface, so that the user can view the second videophone format signal through the second video communication device 16. The video audio channel content, and then complete the channel switching. Similarly, when the user uses the user control interface 22 of the second video communication device 16 to adjust the volume of the audio channel, such as pressing the up arrow button or the down button in the keyboard button, the second video communication device 16 That is, the audio signal transmitted by the circuit-switched wireless transmission interface is transmitted to the first video communication device 20, and then the control unit 30 adjusts the first output of the first video communication device according to the audio signal. The control unit 30 then controls the first video communication device 20 to transmit the first videophone format signal of the adjusted signal strength to the second video communication device 16 via the circuit switched wireless transmission interface. Therefore, the volume of the video channel corresponding to the first videophone format signal received by the user is increased or decreased according to the first videophone format signal whose signal strength has been adjusted.

Compared with the prior art, the digital video broadcast-handset wireless transmission technology is utilized to enable the mobile communication device to be wirelessly connected to the video system server to allow the user to receive the video program. The communication system provided by the present invention is utilized. The video communication device built in the video processing module and the circuit-switched wireless transmission interface supporting the videophone transmit video and audio signals to the video communication device on the user's hand, so that the user wants to watch the video input terminal (such as a cable) The video and audio program provided by the user can be wirelessly connected to the video communication device built into the video processing module by using the video communication device on the hand, and finally completed in the video processing module as described above. After the video encoding and decoding process, the user can receive the video and audio program provided by the video input terminal, so that not only the video audio channel provided by the video output terminal, but also the communication system provided by the user through the invention To watch, and users no longer need to pay for the wireless system service industry. That is, when the user performs video channel viewing the video output terminal provided through communication system provided by the present invention, only pay using the circuit switched radio interface radio transmission performed to connection costs. In addition, the user can also use the keyboard button on the video call device of the hand to switch channels or audio and video while watching the video channel content provided by the video output device through the video communication device on the hand. The adjustment of the channel content parameters, such as controlling the volume or the brightness of the screen, greatly increases the convenience of the user when viewing the video channel content provided by the video output.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10. . . Communication system

12. . . Video output

14. . . Video processing module

16. . . Second video communication device

18. . . Video coding device

20. . . First video communication device

twenty two. . . User control interface

twenty four. . . Video demodulation unit

26. . . Video decoding unit

28. . . Video telephony coding unit

30. . . control unit

Figure 1 is a functional block diagram of a communication system of the present invention.

Figure 2 is a functional block diagram of the video compiling apparatus of Figure 1 of the present invention.

10. . . Communication system

12. . . Video output

14. . . Video processing module

16. . . Second video communication device

18. . . Video coding device

20. . . First video communication device

twenty two. . . User control interface

Claims (14)

A video processing module capable of converting an audio and video signal into a videophone format signal, which is connected to a television video channel video output terminal, the video processing module includes: a video compiling device, which is used to compile the television video and audio At least one television video channel signal transmitted from the channel video output to generate a first video telephony format signal; and a first video telephony device electrically coupled to the video compiling device, the first video telephony device The first videophone format signal is outputted to the second video communication device when a second video communication device is connected via a circuit switch wireless transmission interface. The video processing module of claim 1, wherein the video compiling device comprises: a video demodulation unit for demodulating a plurality of television video channel signals transmitted by the video channel of the television video channel; Generating a first channel signal; a video decoding unit electrically connected to the video demodulation unit, wherein the video decoding unit is configured to process the first channel signal to generate a corresponding one of the first video signals; a coding unit electrically coupled to the video decoding unit, the video telephony coding unit for encoding the first video signal into the first video telephony format signal; and a control unit electrically coupled to the video telephony a coding unit and the first video communication device, wherein the control unit is configured to control the first video communication device via The circuit switched wireless transmission interface transmits the first videophone format signal to the second video communication device. The video processing module of claim 1, wherein the circuit switched wireless transmission interface is a 3G or 3.75G wireless transmission interface. The video processing module of claim 1, wherein the first videophone format signal conforms to the H.264 video standard. A communication system capable of transmitting a videophone format signal, comprising: a television video channel video output terminal for outputting at least one television video channel signal; and a video processing module connected to the television video channel audio output terminal The video processing module includes: a video compiling device configured to compile the television video channel signal transmitted by the video channel of the television video channel to generate a first video telephony format signal; and a first video telephony device The first video communication device is configured to receive the first videophone format signal and output the first videophone format signal via a circuit switched wireless transmission interface; and a second video message a call device connected to the first video communication device via the circuit switched wireless transmission interface, the second video communication device being configured to receive and broadcast The first videophone format signal transmitted by the first video communication device is placed. The communication system of claim 5, wherein the video processing module is connected to the video channel of the television video channel in a wired or wireless manner. The communication system of claim 5, wherein the video compiling device comprises: a video demodulation unit for demodulating a plurality of television video channel signals transmitted from the video channel of the television video channel to generate a video a first channel signal; a video decoding unit electrically connected to the video demodulation unit, the video decoding unit is configured to process the first channel signal to generate a corresponding one of the first video signals; and a video telephony encoding unit Connected to the video decoding unit, the video telephony encoding unit is configured to encode the first video signal into the first video telephony format signal; and a control unit electrically coupled to the video telephony encoding unit And the first video communication device, wherein the control unit is configured to control the first video communication device to transmit the first videophone format signal to the second video communication device by using the circuit switched wireless transmission interface. The communication system of claim 5, wherein the circuit switched wireless transmission interface is a 3G or 3.75G wireless transmission interface. The communication system of claim 7, wherein the second video communication device includes The user control interface is configured to output an audio signal to the control unit via the circuit switched wireless transmission interface, and the control unit performs a corresponding function according to the audio signal. The communication system of claim 9, wherein the control unit adjusts the signal strength of the first videophone format signal output by the first video communication device according to the audio signal. The communication system of claim 9, wherein the control unit controls the video demodulation unit to demodulate the plurality of television video channel signals transmitted by the video channel of the television video channel according to the audio signal to generate a second The channel signal is used to generate a corresponding second videophone format signal. The communication system of claim 11, wherein the first videophone format signal and the second videophone format signal conform to the H.264 video standard. The communication system of claim 7, wherein the second video communication device is a video handset. The communication system of claim 7, wherein the second video communication device is a Personal Digital Assistant (PDA).