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3G (third generation) video telephone

A video and audio technology, applied in the field of 3G video fixed-line telephone, can solve the problems of intermittent and blurred images, and achieve the effect of stable speed and flow, excellent cost performance and low cost

Inactive Publication Date: 2014-12-17
惠州市惠阳区美思奇实业发展有限公司
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  • Application Information

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Problems solved by technology

[0009] Especially in low-bandwidth network speed and high-jitter line transmission, if the codec and image transmission cannot meet the requirements, the image will be severely intermittent and blurred

Method used

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Examples

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Embodiment

[0027] A 3G video fixed line, such as figure 1 As shown, it includes signal mode processing module, radio frequency module, modem module, call module, central control module, audio I / O unit and video / image I / O for audio / video / image signal and application data identification unit, wherein the signal mode processing module is connected to the TD signal transceiver and the PSTN-based telephone line at the same time, and the radio frequency module, modem and call module are respectively connected between the signal mode processing module and the central control module; the audio I / O The unit includes a microphone and speaker, and the video / image I / O unit includes a liquid crystal display.

[0028] The signal mode processing module is realized according to the following workflow:

[0029] 1) Judging the input signal, if it is a telephone signal, enter the telephone processing mode, and 3G enters the busy state;

[0030] 2) Determine whether to initiate a video, if yes, send the s...

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Abstract

The invention relates to a 3G (third generation) video telephone, which comprises a signal pattern processing module and a central control module, the central control module is provided with an audio / video / image data stream processor and an application data processor, and the audio / video / image data stream processor is provided with a transport stream processor, a video / image decoder, a video / image encoder, an audio decoder and an audio encoder; a decoded video buffer unit is connected with the transport stream processor sequentially through the video / image decoder and a compressed video / image buffer unit, and a raw video / image buffer unit is connected with the transport stream processor sequentially through the video / image encoder and an encoded video / image buffer unit; a decoded audio buffer unit is connected with the transport stream processor sequentially through the audio decoder and a compressed audio buffer unit, and a raw audio buffer unit is connected with the transport stream processor sequentially through the audio encoder and an encoded audio buffer unit. The 3G video telephone can effectively adjust the data stream link of each step of encoding and decoding and guarantee the smoothness of encoding, decoding and image transmission.

Description

technical field [0001] The invention relates to the fields of 3G wireless communication and video / image / voice wireless transmission, specifically a 3G video fixed phone. Background technique [0002] At present, the country is vigorously developing the 3G industry, and the first-phase sites of the 3G network have launched the third-generation mobile communication (3G) in 10 cities. [0003] The current 3G technical specifications include: TD-SCDMA, WCDMA, and CDMA2000. [0004] WCDMA (Wideband CDMA) is a wideband code division multiple access technology. It is a 3G technical specification developed based on the GSM network. It is a wideband CDMA technology proposed in Europe. [0005] CDMA2000 is a broadband CDMA technology developed from narrowband CDMA (CDMA IS95) technology, which was proposed by Qualcomm North America. Currently, China Unicom is adopting this solution to transition to 3G and has built a CDMA IS95 network. [0006] TD-SCDMA (Time Division-Synchronous CD...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/14H04M1/725H04M1/72409H04N19/42
Inventor 龚顺义
Owner 惠州市惠阳区美思奇实业发展有限公司
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