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Video encoder using average histogram difference and method for controlling the same

A video encoder, histogram technology, applied in the fields of botany equipment and methods, digital video signal modification, television, etc.

Inactive Publication Date: 2005-11-09
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] Therefore, the prior art H.263 / MPEG encoder has the disadvantage that when the input image is encoded such that it causes an overload, all areas of the image block pass the motion independently of the I-mode and P-mode Estimate operations to perform

Method used

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  • Video encoder using average histogram difference and method for controlling the same
  • Video encoder using average histogram difference and method for controlling the same
  • Video encoder using average histogram difference and method for controlling the same

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Embodiment Construction

[0025] Several preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In this drawing, the same or similar elements are denoted by the same reference numerals even though they are depicted in different drawings. In the following description, a detailed description of known functions and constructions incorporated herein will be omitted when it may make the subject matter of the present invention unclear. In addition, terms used in the following description are terms defined in consideration of functions obtained according to the present invention.

[0026] Because a prior art video encoder performs a motion estimation operation on all regions of an input picture to it, and then determines whether the subsequent picture is to be processed in I-mode (from which spatial redundancy is removed) or in P-mode (from which temporal redundancy is removed). Redundancy) encoding, the prior art video encoder performs mot...

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Abstract

A H.263 / MPEG video encoder using an average histogram difference, and a method for controlling the same are disclosed. The H.263 / MPEG video encoder generates a reference image frame for encoding a subsequent input image frame N based on a current input image frame N-1 which is performed by a DCT (Discrete Cosine Transform) and quantization operations for outputting a video stream and a quantized signal. Here, the quantized signal is decoded by an inverse quantization and inverse discrete cosine transform (IDCT) operations. Also, the encoder comprises a mode selection unit for selecting a first mode in which motion estimation / compensation operations are not performed, if the subsequent image frame N is relatively heavily changed from the reference image frame, after the subsequent image frame N is compared with the reference image frame to remove a temporal redundancy therefrom.

Description

technical field [0001] The present invention relates to multimedia data services for mobile communication terminals, and more particularly to a H.263 / MPEG video encoder using average histogram differences, and a method for controlling it for mobile communication terminals to transmit Motion pictures or video data. technical background [0002] Due to bandwidth limitations, second generation (2G) mobile communication terminals are limited to voice services. When the IMT-2000 technology is sufficiently developed, a mobile communication terminal using the IMT-2000 technology can provide a moving picture service to a user. Nowadays, as the demand for visual and voice information via a mobile communication terminal increases, a method for realizing a moving picture in a mobile communication terminal allows the user to obtain desired information. [0003] However, techniques for rapidly transmitting large amounts of image data in real time have severe limitations whose value cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N7/26H04N7/50
CPCH04N19/00781H04N19/00145H04N19/00278H04N19/0003H04N19/176H04N19/61H04N19/107H04N19/137H04N19/895A01G13/0281A01G13/0237A01G17/005
Inventor 李玹承
Owner SAMSUNG ELECTRONICS CO LTD
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