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Image compression circuit, image compression method and transmission system

A technology of image compression and circuit, applied in the field of transmission system, can solve the problem of image quality degradation

Active Publication Date: 2018-10-30
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, image quality is degraded

Method used

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  • Image compression circuit, image compression method and transmission system
  • Image compression circuit, image compression method and transmission system
  • Image compression circuit, image compression method and transmission system

Examples

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no. 1 example

[0056] (configuration example)

[0057] (Overall configuration example)

[0058] figure 1 A configuration example of the transmission system according to the first embodiment is shown. The transmission system 100 is a transmission system that compresses and transmits image data. Note that an image compression circuit and an image compression method according to an embodiment of the present invention are embodied by this embodiment, and thus will be described together.

[0059] The transmission system 100 includes a transmitter 1 and a receiver 9 . The transmitter 1 transmits image data, and the receiver 9 receives the image data transmitted by the transmitter 1 . The transmitter 1 generates a transfer signal SIG based on a pixel signal YC, a data enable signal DE, a vertical synchronization signal VS, a horizontal synchronization signal HS, and a clock signal CLK. The pixel signal YC is a parallel signal including a luminance (Y) signal and color difference (Cb and Cr) sign...

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Abstract

An image compression circuit includes: a transform section configured to transform a plurality of pieces of pixel data into a plurality of pieces of coefficient data; and a quantization section configured to obtain a quantization parameter based on a predetermined number of pieces of the coefficient data, and to quantize the predetermined number of pieces of the coefficient data with use of the quantization parameter.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Japanese Priority Patent Application JP2013-126627 filed on Jun. 17, 2013, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to an image compression circuit, an image compression method used in the image compression circuit, and a transmission system using the image compression circuit. Background technique [0004] In the process of transferring a moving picture between devices, images constituting the moving picture are compressed and transmitted. Specifically, in the transmission system, the transmission capacity (so-called transmission band) that can be transmitted per picture unit time is limited, and thus the picture is compressed to be within the transmission capacity. When image compression is performed, the code size is allowed to be reduced as more compression is performed. However, image quality i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/124
CPCH04N19/1883H04N19/124H04N19/136
Inventor 饭塚浩菊池秀和
Owner SONY CORP