CN200966100Y - Wireless USB audio and video transmission device - Google Patents

Abstract

The utility model relates to a wireless USB audio-visual transmission device, which comprises a digital set top box body, can receive wireless digital and analog audio-visual signals and connect the wireless digital and analog audio-visual signals with a television body through an output end; and can also utilize a wireless USB transmission device, set up in the body of the digital machine upper box, responsible for transmitting USB signal to another wireless USB receiving arrangement in a wireless way, another wireless USB receiving arrangement is set up in the host computer, receive a video-audio TV program that the wireless USB transmission device transmits, so, can transmit the TV program to the host computer and broadcast in the way of wireless USB transmission, and can record the program through the host computer, achieve and save space, and have the function of the program of time-light translation (TIME SHIFTING), can access television program signal on the network after connecting the network again, etc. multiple effects, very convenient.

Description

Wireless USB audio and video transmission device

technical field

The utility model relates to an audio-visual transmission device, in particular to a wireless USB audio-video transmission device, which is applied to common TV sets and computers.

Background technique

Living in modern times, we can almost say that we can’t live without computers. “Computer” connects people together, and “Computer” shortens the distance to the shortest in the boundless world. Through the display on the screen, we can It is easy to see the scenery on the other side of the earth. Therefore, how to connect the surrounding home appliances and computers has become one of the most important issues nowadays.

Please refer to the prior art in Fig. 1, as shown in the figure, a digital TV box 10 and a TV screen 12 for TV reception include a power supply 14 and an antenna 16 for self-power supply, through which the antenna 16 of the digital TV box 10 receives external The signal is supplied to the digital TV box 10 for signal processing and conversion, and finally the image is played on the TV screen 12; however, the above-mentioned prior art has the following disadvantages: the digital TV box 10 is used on the TV screen 12, when the program time cannot be matched When consumers cannot watch the program, they cannot record the program, and can only watch it in normal time, or when they want to retrieve the real-time program, they cannot record it in real time, unless an additional connection line is used to connect the video device, such as Video recorders, computers, etc., are actually missing.

Utility model content

In view of this, the above-mentioned deficiencies in the prior art, the utility model proposes a wireless USB audio-video transmission device to solve the deficiencies in the prior art.

The main purpose of this utility model is to provide a wireless USB audio-visual transmission device, which uses ultra-wideband (Ultra Wide Band; UWB) technology through a wireless USB, emits very narrow pulse waves, and is matched with a large enough transmitter. With wide radio frequency, it is possible to transmit video and audio data at a high speed in the indoor distance of a general room under low power conditions, and wirelessly transmit the digital or analog program signal on the digital TV box to the computer for recording TV. programs, effectively saving space.

Another purpose of this utility model is to provide a wireless USB audio-visual transmission device, which uses the USB connection port to have the ability of wireless communication, so that the complicated wires behind the computer disappear, and with the help of the wireless USB of the computer, the audio-visual data will be received on the digital machine. The TV programs in the box are transmitted and placed on the network for users connected to the computer to watch, so that people far away can also connect to the computer through the network to watch TV programs.

Another purpose of this utility model is to provide a wireless USB audio-visual transmission device, which can receive various digital signals such as DVB, DVB-T, DVB-S, DVB-C, DVB-H, ISDB-T, etc. .

In order to achieve the above purpose, the utility model discloses a wireless USB audio-visual transmission device, which includes a digital set-top box body, which can receive wireless digital and analog audio-visual signals, and connect the wireless digital and analog audio-visual signals to a TV body through the output terminal ; and a wireless USB transmission device can be used, which is arranged inside the digital set-top box body, and is responsible for transmitting the USB signal to another wireless USB receiving device in a wireless manner, while the other wireless USB receiving device is arranged inside the computer host, An audio-visual TV program transmitted by the wireless USB transmission device is received.

The utility model can transmit the TV program to the host computer for playing in the way of wireless USB transmission, and can record the program through the host computer to save space, and has the function of time shifting (TIME SHIFTING) program at the same time. Afterwards, various functions such as TV program signals can be accessed on the network, which is very convenient.

Description of drawings

Fig. 1 is a schematic diagram of the prior art;

Fig. 2a, Fig. 2b are the schematic diagrams of the wireless USB audio-visual transmission device of the present invention;

Fig. 3 is a block diagram of the utility model wireless USB audio-visual transmission device;

Fig. 4 is the schematic diagram of the first embodiment of the wireless USB audio-visual transmission device of the present invention;

Fig. 5 is the schematic diagram of the second embodiment of the wireless USB audio-visual transmission device of the present invention;

FIG. 6 is a schematic diagram of a third embodiment of the wireless USB audio-video transmission device of the present invention.

Detailed ways

In order to facilitate and succinctly understand other features and advantages of the utility model and the effects achieved by it can be more apparent, the utility model is combined with the accompanying drawings by means of specific embodiments, and the detailed description is as follows:

WUSB uses ultra-wideband (Ultra Wide Band; UWB) technology, which uses a very narrow pulse wave to transmit, and with a large enough transmission bandwidth, it can be used at a high speed at a low power and within an indoor distance of a general room. The way of transmission is used to transmit data, and users who have existing radio equipment sharing frequency only need to connect the traditional USB interface device to the wireless Hub, for example: the existing notebook computer can use the WUSB interface card of the USB interface to Wirelessly access related devices connected to the Wireless Hub. If the USB connection port has the ability of wireless communication, the complicated wires behind the computer can be eliminated, and various electronic devices can be moved from one room to another without the need for a router to set up a wireless network, let alone wires.

Please refer to FIG. 2 for a schematic diagram of a wireless USB audio-visual transmission device of the present invention. As shown in the figure, a digital set-top box 18 has an output terminal 1801 and an input terminal 1802 outside, and the input terminal 1802 can be connected to a wireless analog audio-visual signal ( cable TV), and an antenna 20 is further arranged outside the digital set-top box 18 to receive wireless digital audio-visual signals, which can be DVB, DVB-T, DVB-S, DVB-C, DVB-H, ISDB -T.. and other wireless digital signals, while the output terminal 1801 is connected to the TV main body 22, through the digital set-top box 18, the wireless digital audio-visual signal is converted into an NTSC signal receivable by the TV main body 22 or a signal of a digital dvi interface . A wireless USB transmission device 24 is arranged inside the digital set-top box 18, and a corresponding wireless USB receiving device 26 is connected and arranged on a main computer 28, so that the wireless digital data received by the antenna 20 of the digital set-top box 18 can be Audio-visual signal, the signal is loaded into the wireless USB transmission device 24, transmitted to the wireless USB receiving device 26, and after the host computer 28 receives the TV program signal from the digital set-top box 18 through the wireless USB receiving device 26, the program signal is further recorded in the A storage device 281 (referring to Fig. 5, Fig. 6) in this host computer 28, or play on the host computer 28; The TV programs received by the digital set-top box 18 can also perform functions such as real-time video recording or time shifting (TIMESHIFTING), etc., so that the functions of the computer become more powerful. The traditional method of wirelessly connecting WLAN to transmit video and audio signals is difficult for users to set up. However, the utility model uses WUSB, which is a new OS built-in connection method, which is relatively easy to use. It is also possible to further connect the TV program signal received by the wireless USB receiving device 26 to the wireless network through the host computer 28, and connect to the host computer 28 in the form of remote login to watch the TV program received by the digital set-top box 18. This is a Great innovation, the host computer 28 can be a desktop computer, a notebook computer, a palmtop computer and the like.

Please refer to FIG. 2 which is a schematic diagram of the wireless USB video transmission device of the present invention and FIG. 3 is a block diagram of the wireless USB video transmission device of the present invention. Analog audio-visual signal and antenna 20 is connected with an analog tuner 181, and this analog tuner 181 is connected with an image decoding chip 182 again, then transmits the signal to an image compression codec 183, and finally connects a converter 184 and A wireless USB audio-visual transmission device 185, the converter 184 is directly connected with an external computer screen 283 through an output port 1801 (CVBS or DVI), and outputs images and sounds; a digital antenna 20 is connected with a digital tuner 186, and the digital The tuner 186 is arranged inside the digital set-top box body 18, can receive a wireless digital signal through the antenna 20, and connect with the wireless USB transmission device 185 through a demodulator 187, so that the signal can also pass through the wireless USB transmission device A digital antenna 188 of 185 transmits out; And a wireless USB receiving device 26 is connected and arranged on a USB connector of a host computer 28, and receives an audio-visual TV program transmitted by the wireless USB transmitting device 185. Also, the analog tuner 181 can be directly connected to the TV body 22 (RF loop through), and the digital tuner 186 can also be directly connected to the TV body 22 (loop through) to play TV programs. And after this host computer 28 is connected with a network, it can be set that the audio-visual TV program received and stored in the storage device 281 by the wireless USB receiving device 26 is placed on the network for accessing and viewing.

Please refer to Fig. 4 again, it is the first embodiment diagram of the wireless USB audio-visual transmission device of the present invention, as shown in the figure, a digital set-top box 18 of the present invention can be directly connected to a TV body 22 (RFloop through), watching TV programs, And through an internal digital tuner 186 (tuner), the digital audio-visual signal (MPEG) is demodulated by the demodulator 187, transmitted to the wireless USB transmission device 185, and wirelessly transmitted by the digital antenna 188; A wireless USB receiving device 26, which receives the wireless signal transmitted by the wireless USB transmission device 185, utilizes the central processing unit 280 inside the computer mainframe 28 to match the audio-visual decoding software 282 to decompress the image and sound signals and transmit them to the computer screen 283 for playback, use The user can watch TV programs on the TV body 22, or use the computer screen 283 to watch TV programs.

Please refer to Fig. 5 again, it is the second embodiment diagram of the wireless USB audio-visual transmission device of the present utility model, as shown in the figure, a digital set-top box 18 of the present utility model is connected with a TV body 22, can directly watch TV programs, also through personal computer The storage device 281 inside the main body 28 plays the previously recorded TV programs, and through the processing of a central processing unit 280 inside the computer body 28, the signal can be converted into a standard signal for wireless USB transmission, and the signal can be wirelessly transmitted by the wireless USB transmission device 26. Transmit out; transmit to the wireless USB receiving device 185 in the wireless USB audio-visual transmission device 18 of the present utility model to receive, by demodulator 187, digital audio-visual signal (MPEG) is demodulated, and utilize a converter 184 to convert digital signal audio-visual Become analog audio-visual signals to the CVBS/S/DVI/AUDIO terminals on the TV body 22 to play video and audio TV programs.

Please refer to FIG. 6 again, which is a diagram of the third embodiment of the wireless USB audio-visual transmission device of the present invention. As shown in the figure, in order to combine the utility model of the first and second embodiments, the action of time shifting (TIMESHIFTING) is made; first, use a Antenna 20 receives the TV program of wireless digital signal, demodulates signal through demodulator 187, and digital audio-visual signal (MPEG) after demodulator 187 demodulates this moment, transmits to personal computer host terminal 28 by wireless USB transmission device 185 Received by the wireless USB receiving device 26 inside, and processed by the central processing unit 280, the signal is stored in the storage device 281, and then the signal is transmitted to the digital set-top box 18 through the wireless USB transmission device 26 in the host terminal 28 of the personal computer. The wireless USB receiving device 1851 receives, and then uses a converter 184 to convert the digital signal into an analog signal after the demodulator 187 demodulates the received digital audio-visual signal (MPEG), and then connects to the CVBS/S/ The DVI/AUDIO terminal plays sound and image, so, just can make the action of time shifting (TIME SHIFTING), while watching TV, store previous audio-visual data through the storage device 281 inside main computer 28, and utilize TV set The main body 22 repeatedly watches the previously missed program video.

To sum up, the utility model has indeed achieved the desired effect after breaking through the previous technical structure, and it is not easy for those who are familiar with the art to think about it. Furthermore, the utility model has not been disclosed before the application, and its Its progressiveness and practicality are obvious.

The embodiments described above are only to illustrate the technical ideas and characteristics of the present utility model, and its purpose is to enable those skilled in this art to understand the content of the present utility model and implement it accordingly, and should not limit the scope of the present utility model with it. The scope of the patent, that is, all equivalent changes or modifications made according to the spirit disclosed in the utility model should still be covered by the protection scope of the claims of the utility model.

Claims (12)

1. A wireless USB audio-visual transmission device is characterized in that it comprises a digital set-top box body, receives a wireless analog audio-visual signal, and tunes the wireless analog audio-visual signal by an analog tuner connected, and the analog tuner is connected again An image decoding chip, then transmits the signal to an image compression codec, and finally connects a converter and a wireless USB transmission device; A digital antenna is connected with a digital tuner, and the digital tuner is set inside the digital set-top box body, connected to receive a wireless digital signal, and connected to the wireless USB transmission device through a demodulator, so that the signal passes through the wireless the USB transfer device transfers out; and A wireless USB receiving device is connected to a computer host to receive an audio-visual TV program transmitted by the wireless USB transmission device. 2. The wireless USB audio-video transmission device according to claim 1, wherein the converter is directly connected to a TV body to output video and audio. 3. The wireless USB audio-video transmission device according to claim 1, wherein the digital set-top box body is connected to receive a cable TV signal. 4. The wireless USB audio-video transmission device according to claim 1, wherein the digital set-top box body is connected to receive a wireless digital signal. 5. The wireless USB audio-visual transmission device as claimed in claim 1 or 4, wherein the wireless digital signal is DVB, DVB-T, DVB-S, DVB-C, DVB-H, ISDB-T Various digital signals. 6. The wireless USB audio-video transmission device according to claim 1, wherein the host computer is a desktop computer, a notebook computer or a palmtop computer. 7. The wireless USB audio-visual transmission device according to claim 1, wherein the host computer receives the audio-visual TV program through the wireless USB receiving device, and records and stores it in a storage device of the host computer. 8. The wireless USB audio-visual transmission device as claimed in claim 1 or 6, wherein the host computer is connected to a network, and the wireless USB receiving device receives and stores the audio-visual TV program in the storage device and places it on the web for access. 9. The wireless USB audio-video transmission device according to claim 1, wherein the wireless USB receiving device further includes a digital antenna for transmitting video signals. 10. The wireless USB audio-video transmission device according to claim 1, wherein the wireless USB receiving device further includes a digital antenna for receiving video signals. 11. The wireless USB audio-video transmission device according to claim 1, wherein the analog tuner is also directly connected to the TV body. 12. The wireless USB audio-video transmission device according to claim 1, wherein the digital tuner is also directly connected to the TV body.

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