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Decompression processing method of video digital signals

A technology of digital signal and processing method, applied in the direction of digital video signal modification, pulse modulation TV signal transmission, simultaneous/sequential multi-TV signal transmission, etc., which can solve complex and difficult problems

Inactive Publication Date: 2003-06-04
GENERAL INSTR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the DTS is encapsulated in a PES preamble, it is still difficult and complex to obtain the DTS while the receiver's video compression processor is receiving and analyzing the relevant video data

Method used

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  • Decompression processing method of video digital signals
  • Decompression processing method of video digital signals
  • Decompression processing method of video digital signals

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Experimental program
Comparison scheme
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Embodiment Construction

[0041] Structural features of the present invention are described in detail as follows in conjunction with accompanying drawing and embodiment:

[0042] FIG. 1 shows a block diagram of a video decompression processor incorporating a memory manager 30 connected to an external DRAM memory 22 for storing and reading the video data required by the receiver when recombining television programs. Compression processor 20 is a pipeline processor that can be used to decode transmission signals (such as control and other non-video data) and video signals in the compressed data stream signal sent from terminal 10, sometimes referred to as Transport wrapper interface for the video processor.

[0043] There is a user processor interface at terminal 14, which can be used as the control of the video data processor via the M-bus controller 50, which includes several registers in the processor 20 device. The M-bus is a two-wire bidirectional serial bus, which provides simple and effective me...

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Abstract

A video decompression processor acquires video data for a desired service from a packetized data stream. The data stream includes transport packets carrying different components of the desired service. Each component is identified by a unique packet identifier (PID). One of the components includes a program clock reference (PCR) providing timing information for the desired service. The PIDs of the transport packets are monitored to recover video packets. Header information from the recovered packets is processed to recover packetized elementary stream (PES) packets having a PES header and picture information. Time stamp information obtained from the PES header is appended to the picture information for storage in a video memory. Picture information can subsequently be read from the memory and decoded using the appended time stamp information without having to reaccess the PES header. Various schemes for detecting, masking and recovering from transmission errors are disclosed.

Description

(1) Technical field [0001] The present invention relates to a video digital signal decompression processing method, in particular to a decompression method for obtaining, for example, a video digital signal ready for decoding from the aggregated data. (2) Background technology [0002] In TV signal transmission, the digital signal transmission mode has higher quality sound and video effects than the analog signal mode. Digital signal delivery systems are particularly advantageous for transmissions via cable television networks or satellite to cable stations and / or directly to home satellite television receivers. It can be expected that the digital TV transmitter and receiver system will replace the existing analog system in the future, just as in the audio industry, the digital disc has replaced the analog turntable. [0003] In any digital television system, large amounts of data must be transmitted. In a digital television system, a subscriber line can receive the digita...

Claims

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Application Information

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IPC IPC(8): H04N7/08H04N7/081H04N7/173H04N19/89H04N21/236H04N21/434H04N21/438H04N21/44
CPCH04N19/00781H04N21/236H04N19/00933H04N19/00884H04N7/64H04N7/5073H04N19/00H04N21/434H04N19/70H04N19/61H04N19/89H04N21/44
Inventor 克瑞斯·郝金布姆保罗·莫洛尼
Owner GENERAL INSTR CORP