New Bi-Level pdp drive technology - Page 3 - AVS Forum
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post #61 of 65 Old 05-22-2012, 07:57 AM
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Quote:
Originally Posted by xrox View Post

Taking a closer look at the Panasonic graphic from the Viera site and searching through the patents (keyword "motion") I would speculate the following:

Field Focus Drive
  • A motion detection circuit identifies individual frames with fast motion
  • An algorithm analyzes the frame and determines which corresponding areas of the screen will display fast motion (i.e. - which groups of pixels) and are very bright
  • Data for those pixels is generated using only a small portion of the subfields in order to reduce hold time (impulse like emission of light) and improve motion resolution.

Came across some interesting speculation along these lines in this post. Do you agree with his interpretation of 2500 FFD?
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post #62 of 65 Old 05-25-2012, 07:09 AM
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Originally Posted by zoyd View Post

Came across some interesting speculation along these lines in this post. Do you agree with his interpretation of 2500 FFD?

Thanks zoyd,

I agree with the very general concept of compressing the light emission to 0.4ms. The specifics and details are very wrong though if I am reading correctly. Among them is that I think he is suggesting that PDP is modulating light without PWM (like a CRT).

Over thinking, over analyzing separates the body from the mind
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post #63 of 65 Old 06-17-2012, 05:09 AM
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06-14-2012
http://www.faqs.org/patents/app/20120146974

"[0007] The present invention is intended to provide a PDP which is large in size and has high definition but permits stable writing electric discharging over the whole surface of the display screen while suppressing increases in power consumption. A PDP according to the present invention has a first substrate, plural pairs of display electrodes, a second substrate, and plural data electrodes. The display electrodes are made up of scanning electrodes and sustain electrodes arranged parallel to each other on the first substrate. The second substrate is disposed opposite to the first substrate. A discharge space is formed between the first substrate and second substrate. The data electrodes are arranged on the second substrate in a direction perpendicular to the display electrodes. The data electrodes are wider in peripheral portions of the second substrate than in a central portion of the second substrate. Because of this configuration, even when a PDP is large in size and has high definition, it can suppress increases in power consumption. As a result, the PDP permitting stable writing electric discharging over the whole display screen can be obtained."
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post #64 of 65 Old 07-23-2012, 09:04 AM
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post #65 of 65 Old 10-05-2012, 08:03 AM
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09- 27-2012
http://www.faqs.org/patents/app/20120242721

A loading phenomenon in a plasma display panel is reduced and the image display quality is improved. For this purpose, image signal processing circuit (41) includes a number-of-lit-cells calculating section (60) for calculating the number of lit cells, load value calculating section (61) for calculating the load value in each discharge cell based on the calculation result by number-of-lit-cells calculating section (60), correction gain calculating section (62) for calculating the correction gain of each discharge cell based on the calculation result by load value calculating section (61), pattern detecting section (63) for determining the presence or the absence of occurrence of a loading phenomenon in a display image, selecting circuit (64) as a correction gain changing section for changing the correction gain based on the determination result by pattern detecting section (63), and correcting section (69) for correcting an image signal based on the correction gain after the change.

(...)

[0298] The present invention can provide a plasma display apparatus and a driving method for a panel that can reduce the variation in luminance caused in a display image by the difference in driving load between display electrode pairs and improve the image display quality by reducing unnecessary variation in luminance in the display image, even when the panel has a large screen and high definition. Therefore, the present invention is useful as a plasma display apparatus and a driving method for a panel.
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