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Harmonic elimination of black non-activated areas in video display devices

A technology of display equipment and equipment, which can be applied to components of color TVs, components of TV systems, conversion of spatial resolution of video signals, etc., and can solve problems such as disturbing observers.

Inactive Publication Date: 2007-05-09
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The video image 17 in 4:3 format is expanded vertically on the display screen 15 from top to bottom, but it leaves vertical dark bands 18 and 19 on the left and right sides of the display screen 15 that do not reproduce the image
[0007] Unfortunately, these horizontal or vertical dark bands are distracting to the observer and are also a nuisance to them

Method used

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  • Harmonic elimination of black non-activated areas in video display devices
  • Harmonic elimination of black non-activated areas in video display devices
  • Harmonic elimination of black non-activated areas in video display devices

Examples

Experimental program
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Embodiment Construction

[0018] Figure 3 shows a first embodiment of a display device comprising a video input 20 and a 4:3 aspect ratio display screen 30 which displays a video program in 16:9 format. Video image 32 has an aspect ratio of 16:9 and expands across the width of display screen 30 . A pair of bezel images 34 and 36 are displayed on the display screen 30 adjacent the top and bottom of the video image 32 . That is, the pixels within the area of ​​the border images 34, 36 on the display screen 30 are actually activated and driven to display a desired color. The display screen 30 housing includes a cathode ray tube, a direct-view liquid crystal display (LCD) panel, a plasma display panel, an electroluminescent device, a projector screen (such as an LCD or reflective liquid crystal display (LCOS) projector), etc. . Advantageously, the bezel image data is suitably combined with the video image before being applied to the video or data driver circuitry of the display device.

[0019] In a fir...

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PUM

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Abstract

A video display device including a display screen (30, 40) having a first aspect ratio displays a video image (32, 47) having a second aspect ratio, together with framing images (34 / 36, 48 / 49, 54 / 56, 68 / 69), either above and below or at both sides of the video image (32, 47). The pattern and / or color of the framing images (34 / 36, 48 / 49, 54 / 56, 68 / 69) may be pre-selected to match a color of a cabinet housing the display screen (30, 40), or selected by a user based on whatever the user finds to be least distracting. Alternatively, a selection circuit may select a pattern and / or color for the framing image (34 / 36, 48 / 49, 54 / 56, 68 / 69) based on color content of the video image (32, 47). Moreover, the program material containing the video image (32, 47) may include a code / codes that identifies a pattern and / or color to be used for the framing images (34 / 36, 48 / 49, 54 / 56, 68 / 69).

Description

technical field [0001] The present invention relates to video display devices, such as video monitors and television receivers, and more particularly to a system and method for displaying video images having an aspect ratio different from that of the video display device. Background technique [0002] Traditionally, most video display devices, such as video monitors and television receivers, are constructed with an aspect ratio of 4:3. Consequently, until the past decade, most video programming material, especially television programming material, was also produced with a 4:3 aspect ratio. However, with the advent of advanced televisions and high-definition television display devices, etc., more video displays have recently been produced with display screens having a so-called "widescreen format" with an aspect ratio of 16:9. As a result, more and more video programming material is also produced in widescreen format with a 16:9 aspect ratio. [0003] Thus, currently, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/44H04N21/431
CPCH04N7/0122
Inventor G·洛克
Owner KONINKLIJKE PHILIPS ELECTRONICS NV