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Cartoon transmission/receiving device

A technology of sending device and receiving device, which is applied in image data processing, television, instrument, etc., and can solve problems such as animation image quality and frame rate drop, narrow effective bandwidth, etc.

Inactive Publication Date: 2004-09-15
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the existing error recovery method for video transmission, there are problems as follows: In the case of video transmission over a narrow-band transmission line, the effective bandwidth becomes narrower due to redundant data, and the picture quality and frame rate of the video are lowered.

Method used

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  • Cartoon transmission/receiving device
  • Cartoon transmission/receiving device
  • Cartoon transmission/receiving device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] figure 1 shows the animation data structure, in figure 1 Among them, I is an I picture (intra-frame coding image), P is a P picture (interframe forward predictive coding image ), P' is the forward predictive coding of the P' picture ("the previous picture [S] of a certain I picture [T]" and "the I picture [T]" image ).

[0039] figure 2 A block diagram showing the structure of the error correction device, in figure 2 Among them, 201 is an animation sending device, 202 is an animation receiving device, and they are connected through a transmission line 203.

[0040] The animation sending device 201 has: a network interface part 204; a data sending part 205; a data receiving part 206; and an animation data providing part 207 for providing animation. According to the command data obtained from the data receiving part 206, the animation data acquisition part 208 obtains the animation data based on the command data from the animation data supply part 207, and in th...

Embodiment 2

[0050] image 3 shows the animation data structure, in image 3 Among them, I is an I picture (intra-frame coding image ), P is a P picture (interframe forward predictive coding image ), P" is the forward predictive encoding of P" picture ("the previous I picture [X] of a certain I picture [Y]" and "the current I picture [Y]" image ).

[0051] Figure 4 A block diagram showing the structure of the error correction device, in Figure 4 Among them, 401 is an animation sending device, 402 is an animation receiving device, and they are connected through a transmission line 403.

[0052] The animation sending device 401 has: a network interface part 404; a data sending part 405; a data receiving part 406; and an animation data providing part 407 for providing animation. According to the command data obtained from the data receiving part 406, the animation data acquisition part 408 obtains the animation data based on the command data from the animation data supply part 407, an...

Embodiment 3

[0062] Figure 5 shows the animation data structure, in Figure 5 Among them, I is an I picture (intra-frame coding image ), P is a P picture (interframe forward predictive coding image ), P' is the forward predictive coding of the P' picture ("the previous picture [S] of a certain I picture [T]" and "the I picture [T]" image ), the P' picture uses a frequency band different from that of normal movie data.

[0063] Image 6 shows the block diagram of the structure of the error correction device, in Image 6 Among them, 601 is an animation sending device, 602 is an animation receiving device, and they are connected through a transmission line 603.

[0064] The animation sending device 601 has: a network interface part 604; a data sending part 605; a data receiving part 606; and an animation data providing part 607 for providing animation. According to the command data obtained from the data receiving part 606, the animation data acquisition part 608 obtains the animation ...

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Abstract

In a moving picture data structure having a structure comprising I pictures (intraframe coded image) and P pictures (interframe forward predictive coded image), a P' picture of a forward predictive coded image of a picture immediately preceding an I picture and the I picture is placed following the I picture. If an error occurs during the I picture transmission, the P' picture can be used to recover from the error.

Description

technical field [0001] The present invention relates to error recovery when transmitting animation in a packet network where errors cannot be ignored. Background technique [0002] In the past, as the error recovery method when the video data stored in the video transmission device is transmitted to the video reception device through the transmission line, the following methods are known: the video transmission device prepares redundant data for error recovery in advance, When an error occurs in the receiving device, the redundant data is used to recover the error. [0003] In general, animation data can be viewed as a series of time-continuous image constitutes, in MPEG image In the compression method, the I picture (intra-frame coding image ), P picture (interframe forward predictive coding image ) and B pictures (bidirectional predictive coding image ) configuration to reduce redundancy in the time direction of animation data. In addition, in order to realize random...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T9/00H04N7/50H04N7/66H04N19/89H04N19/895
CPCH04N19/00781H04N19/00933H04N7/64H04N7/66H04N7/50H04N19/00939H04N7/68H04N19/61H04N19/89H04N19/895
Inventor 高木利匡井上秋野冈敏夫
Owner PANASONIC CORP