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Image signal processing unit and method of processing image signal

An image signal processing and signal technology, which can be used in image communication, conversion of interpolation processing, and field conversion by changing the direction of input video signals, which can solve problems such as insufficient smoothness of images.

Inactive Publication Date: 2010-02-10
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, in the movie image, since the image moves on the screen at a frame rate of 25fps, there is a disadvantage that the movement of the image is not visually smooth

Method used

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  • Image signal processing unit and method of processing image signal
  • Image signal processing unit and method of processing image signal
  • Image signal processing unit and method of processing image signal

Examples

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Embodiment Construction

[0044] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0045] figure 1 An example of the configuration of an image signal processing unit according to an embodiment of the present invention is indicated. The image signal processing unit includes an input terminal 51 into which an input signal 52 is input, and a frame rate conversion circuit 53 that performs frame rate conversion on the input signal 52 . The image signal processing unit also includes a switch control section 70 for instructing whether to perform motion correction processing at the time of frame rate conversion in the frame rate conversion circuit 53 .

[0046] The frame rate conversion circuit 53 performs frame rate conversion so that the first frame frequency (for example, 50 fps) in the image signal as the input signal 52 is converted to a second frame frequency (for example, 100 fps) twice the first frame frequency. Then, the frame ...

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Abstract

An image signal processing unit includes a frame rate conversion circuit (53) performing double frame rate conversion on an input image signal from a first frame frequency to a second frame frequency.When performing frame rate conversion with the motion correction process, a motion vector is determined between a first frame image and a third frame image, and three interpolation frame images are formed through the motion correction process to the first frame image based on the motion vector, and are inserted between the first and third frame images so as to establish the second frame frequency. When performing frame rate conversion without the motion correction process, an interpolation frame image same as the first frame image is inserted between the first and second frame images, and aninterpolation frame image same as the second frame image is inserted between the second and third frame images.

Description

technical field [0001] The present invention relates to a technique for improving image quality in situations where the frame rate is doubled, for example, in such a way that in a TV (television) receiver the frame rate is changed from 50 fps (frames per second, frames per second) to 100fps. In particular, the present invention relates to an image signal processing unit and a method of processing an image signal, which improves the quality of an image, for example, in the case of inputting a normal signal (e.g. telop (automatic reflection) in which the frame rate is 50 fps slide projector)) to improve the quality of the image in the case of an image superimposed on a film signal whose frame rate is converted from 25fps to 50fps. Background technique [0002] For example, in a TV receiver, when displaying an image with a frame rate of 50 fps such as a PAL (Phase Alternating Line) signal, there is a disadvantage that the entire screen flickers, that is, in a CRT-based display...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N5/253G09G3/20G09G5/00G09G5/391
CPCH04N7/014H04N7/0112H04N7/013H04N7/0132H04N7/0147
Inventor 星野隆也宫崎慎一郎今井圣子
Owner SONY CORP