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Change of frame velocity corresponding to image data

A frame rate and data technology, applied in image communication, by changing the field conversion and standard conversion of the input video signal, it can solve the problems of image quality degradation and difficult dynamic image display

Inactive Publication Date: 2004-05-26
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in telecine conversion, two consecutive frames are displayed at different ratios such as 2-3 frames, so it is difficult to display moving images of a movie with smooth motion.
In addition, in projectors, image quality may deteriorate due to IP (Interlace Progressive) conversion, which converts an interlaced signal to a progressive signal.
These problems are not limited to projectors, but are common to image display devices that display moving images in a progressive scan manner

Method used

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  • Change of frame velocity corresponding to image data
  • Change of frame velocity corresponding to image data
  • Change of frame velocity corresponding to image data

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0057] A1. The composition of the projector

[0058] A2. Frame rate conversion processing

no. 2 Embodiment

[0060] C.Modification

[0061] A. The first embodiment:

[0062] A1. The composition of the projector:

[0063] figure 1 It is an explanatory diagram showing a schematic configuration of the projector 100 as the first embodiment of the present invention. The projector 100 has a receiver 14 , an image processing unit 20 , a liquid crystal panel driving unit 30 , and a liquid crystal panel 32 . In addition, an illumination device 50 for illuminating the liquid crystal panel 32 and a projection optical system 58 for projecting transmitted light transmitted through the liquid crystal panel 32 onto the screen SC are provided.

[0064] The projector 100 of this embodiment further has the function of reproducing DVD, and includes a reading unit 10 , a detecting unit 11 , a judging unit 12 , a timing adjusting unit 13 and an audio data transmitting unit 15 . In this embodiment, these are constituted in the form of hardware. At least some of these may be configured as software. I...

Embodiment 2

[0079] In the first embodiment described above, the projector 100 having a DVD playback function was exemplified, but in the second embodiment, a DVD playback device separate from the projector will be described. Figure 4 It is an explanatory diagram showing a schematic configuration of a DVD playback device 200 according to Embodiment 2 of the present invention. The DVD playback device 200 includes each of the illustrated functional blocks as hardware. At least some of these may be provided as software.

[0080] The reading unit 210 reads video data and audio data from a DVD. The signal generator 220 converts the progressive scan signal read from the DVD into an interlaced scan signal so that it can be displayed on a television. The signal generator 220 also performs telecine conversion when the video data read from the DVD is a movie with a frame rate of 24 (fps). The first output unit 230 outputs the audio data read by the reading unit 210 and the interlace signal gener...

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Abstract

To suppress the degradation of the image quality of movies that are played on an image display device. A projector having a DVD playback function is configured. In case where movie data that was read out from a DVD comprises a movie film having a frame rate of 24 (fps), a frame rate conversion unit 22 converts the frame rate from 24 (fps) to the triple i.e. 72 (fps) without performing a 2 to 3 pull down telecine conversion. In addition, the driving frequency of a liquid crystal panel 32 is also switched to 72 (Hz) according to the conversion of frame rate.

Description

technical field [0001] The present invention relates to conversion of a frame rate (frame rate) corresponding to image data. Background technique [0002] Now, so-called DVD (Digital Versatile Disk, Digital Versatile Disc) players are widely used. A DVD player reads video data recorded on a DVD, converts it into an interlaced signal with a vertical synchronous frequency of 60 (Hz), and outputs it, so that it can be displayed on a television. In addition, the DVD player, when the moving image data recorded on the DVD is a movie (film movie) at 24 frames per second, performs a so-called 2-3 pull down (pull down) method telecine conversion (hereinafter, simply called telecine conversion) for output. [0003] In recent years, there are also cases where a DVD player is connected to a projector to enlarge and project moving images such as movies played back on the DVD player onto a screen. The projector converts the 60 (Hz) interlaced signal received from the DVD player into a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/60H04N5/66H04N5/74H04N5/92H04N7/01
CPCH04N5/74H04N7/012H04N7/0132
Inventor 河野胜长野干吉国典宏
Owner SEIKO EPSON CORP
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