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High-definition and single-definition digital television decoder

A technology of digital TV and decoder, applied in the field of digital TV decoder

Active Publication Date: 2008-04-09
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, sending HD video from the decoder to the display requires a new interface

Method used

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  • High-definition and single-definition digital television decoder
  • High-definition and single-definition digital television decoder

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Embodiment Construction

[0027] According to the preferred embodiment described here, the first interface is a SCART type interface, the second type interface is a YprPb type interface, and the third type interface is an HDMI / DVI type interface. A decoder is a decoder capable of decoding high-definition and standard-definition data. The display device is a television.

[0028] Figure 1 shows such a decoder.

[0029] The SCART type interface is an interface capable of transmitting analog audio / video data. Therefore, the interface cannot immediately detect the presence of data on the interface. Therefore, when a decoder is equipped with several interfaces, at least one of which is of the SCART type (that is to say on which the presence of data cannot simply be detected), it is difficult to know which interface is connected to the television, and therefore difficult to know On which interface the audio / video data stream must be sent.

[0030] The decoder also includes a second type of interface (not ...

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Abstract

The invention relates to a digital television decoder comprising-at least one first bi-directional interface with a display device intended to transmit and receive analogue data with the said display device, -at least one second mono-directional interface with the said display device intended to transmit analogue data to the said display device. According to the invention, the decoder comprises: -means to detect the reception of a video stream on the first interface, -means to switch the transmission of the data to the second interface when no video signal is received on the first interface.

Description

technical field [0001] The invention relates to a digital television decoder. Background technique [0002] Implementation of new technologies for video compression (MPEG4-AVC), modulation in integrated circuits (xDSL, DVB-S2) and larger and flatter displays (LCD (an acronym for "Liquid Crystal Display"), PLASA, DLP ( An acronym for "Digital Light Processing")), developments drove the introduction and demonstration of high-definition television in the United States and Europe. [0003] High Definition (HD) is generally characterized by larger new format images: 1920x1080 interlaced or 1280x720 progressive. [0004] Today, MPEG4-AVC compression enables transmission of HD television programming over terrestrial, satellite or ADSL-2+ networks with less bandwidth required. As a result, new receiving and decoding terminals have emerged in several markets. [0005] The presentation of HD video requires an HD display capable of displaying images at their full resolution. Additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/44
CPCH04N5/46H04N21/4122H04N21/43635H04N21/43632H04N5/4401H04N21/426
Inventor 弗兰克·阿贝拉尔迪迪埃·杜瓦杨诺埃尔·雷蒙让·皮埃尔·贝尔坦
Owner INTERDIGITAL CE PATENT HLDG