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Dynamic image transmission/reception system

A technology for sending and receiving systems and moving images, applied in image communication, two-way working systems, selective content distribution, etc., can solve problems such as inability to decode, fail to fully meet transmission delay, and spend time on decoding, etc., to achieve low-latency effects

Inactive Publication Date: 2010-12-22
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the conventional video transmission and reception system, in order to insert the padding data when packing, it is necessary to delete the padding data in the receiving unit. received decoding time
In the case of monitoring coded media information at a fixed cycle, the monitoring processing load increases when the cycle is short, and the transmission delay cannot be sufficiently reduced if the cycle is long, so it is difficult to adjust to the most efficient state

Method used

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  • Dynamic image transmission/reception system
  • Dynamic image transmission/reception system
  • Dynamic image transmission/reception system

Examples

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Embodiment Construction

[0024] figure 1 It is a block diagram showing the configuration of the video transmission and reception system according to the embodiment of the present invention. This system includes an image transmitting device 101 and an image receiving device 201 . The image sending device 101 sends media information to the image receiving device 201 via the network. The image receiving device 201 receives media information transmitted from the image transmitting device 101 via a network.

[0025] The image transmission device 101 includes an encoding processing unit 102 that acquires video information, performs H.264 encoding in units of NAL units, adds stuffing data to the code data, and outputs it so that the size of the encoded data is the same as the specified size for packing. The size unit is consistent; the data packet processing unit 103 receives the notification in units of NAL units through the encoding processing unit 102, and packs it; the network sending unit 104, which s...

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Abstract

The invention provides a dynamic image transmission / reception system. An image transmission device (101) includes: an encoding unit (102) which acquires image data, encodes the image data, and outputs code data in one frame in a predetermined unit; a padding processing unit (107) which adds padding so that the data size outputted from the encoding unit (102) coincides with a predetermined size; a packet processing unit (103) which performs packetization upon completion of the padding addition by the padding processing unit (107); and a memory (105) which holds the code data and the packet data. An image reception device (201) includes: separation processing units (202, 203) which receive a packet from an imagetransmission device (101) and separates the packet; and a decoding processing unit (204) which decodes compressed data in a predetermined unit and outputs a stream.

Description

technical field [0001] The present invention relates to a transmission and reception system for transmitting moving image data streams with low delay on a network. Background technique [0002] In the existing video transmission / reception system, in recent years, there are international standards for video signal compression such as MPEG-2 or H.264 as video compression techniques. Media information such as video and audio (hereinafter referred to as multimedia information) is generated simultaneously and in parallel. In order to transmit multimedia information on the communication channel and reproduce the information on the receiving side, it needs to be multiplexed into one data stream together with synchronization information. One of the international standards for realizing this multiplexing is TS (Transport Stream). In TS, coded media information is packaged in appropriate units for each medium to form variable-length PES (Packetized Elementary Stream) packets, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/173H04N7/26H04N19/00H04N19/70H04N21/236H04N21/2389
CPCH04N21/8451H04N21/23611H04N21/234327
Inventor 岩桥贤二三又义昭内田友和
Owner PANASONIC CORP