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Image display apparatus, signal processing apparatus, image display method, and computer program product

An image display device and signal processing technology, applied in image communication, digital video signal modification, electrical components, etc., can solve problems such as signal degradation during blank periods and difficulty in checking signals during blank periods

Inactive Publication Date: 2007-12-05
SONY GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the interpolation described above is performed on the blanking period signal, the blanking period signal is degraded, making it difficult to check the blanking period signal on a monitor

Method used

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  • Image display apparatus, signal processing apparatus, image display method, and computer program product
  • Image display apparatus, signal processing apparatus, image display method, and computer program product
  • Image display apparatus, signal processing apparatus, image display method, and computer program product

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Embodiment Construction

[0044] Now, with reference to the accompanying drawings, an image display device, a signal processing device, an image display method, and a computer program product according to embodiments of the present invention will be described in the order of the following subjects:

[0045] 1. IP conversion

[0046] 2. Processing for displaying blank signals

[0047] 3. Details of device structure and operation

[0048] 1. IP conversion

[0049] First, an outline of general IP conversion will be described. As previously described, when an interlaced image formed by scanning every other scanning line is displayed on a frame-hold display device such as a liquid crystal display, pixel values ​​on lines lacking image signals are determined by interpolation to form lines with all progressive image. That is, IP conversion is performed.

[0050] FIG. 1 is a schematic diagram showing a general IP conversion scheme. In FIG. 1, part (A) shows an example of interlaced output before IP conve...

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Abstract

An image display apparatus includes an active-period interlaced-to-progressive (IP) converter configured to convert active periods (video periods) included in interlaced signals into progressive signals; a blanking-period IP converter configured to convert blanking periods included in the interlaced signals into progressive signals; a multiplexer configured to generate and output display data including both the progressive signals associated with the active periods and the progressive signals associated with the blanking periods; and a display unit configured to display the data output from the multiplexer. The blanking-period IP converter is configured to generate the progressive signals associated with the blanking periods by executing IP conversion in which values copied from data included in the interlaced signals or values corresponding to black pixels are set as pixel values of an interpolated field not included in field data of the interlaced signals.

Description

technical field [0001] The invention relates to an image display device, a signal processing device, an image display method and a computer program product. More particularly, the present invention relates to an image display apparatus, a signal processing apparatus, an image display method, and a computer program product by which, in an apparatus for displaying blank period data, it is possible to prevent When it comes to progressive signals, the degradation of data during the blank period can be obtained to obtain accurate data display. Background technique [0002] A flat panel display (FPD) implemented by a liquid crystal display (LCD) or an organic electroluminescence (EL) display adopts a frame hold display method, as opposed to a CRT display driven by dot sequential pulses. For example, using a standard frame rate of 60 Hz, a flat panel display maintains the same image on the entire display screen during each frame display period (1 / 60 second = 16.7 milliseconds). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01
CPCH04N19/00224H04N19/00048H04N19/00721H04N19/00533H04N19/112H04N19/16H04N19/44H04N19/577
Inventor 石井干夫小菅庄司樋口浩
Owner SONY GRP CORP
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