Source: http://www.google.com/patents/US7844122?dq=6263352
Timestamp: 2018-01-22 01:18:03
Document Index: 186223421

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 2', 'art 1', 'art 1']

Patent US7844122 - Chroma temporal rate reduction and high-quality pause system and method - Google Patents
A system and method are provided for compressing data. In use, luminescence data of a frame is updated at a first predetermined rate, while chrominance data of the frame is updated at a second predetermined rate that is less than the first predetermined rate. Moreover, pause information may be inserted...http://www.google.com/patents/US7844122?utm_source=gb-gplus-sharePatent US7844122 - Chroma temporal rate reduction and high-quality pause system and method
Publication number US7844122 B2
Application number US 10/447,514
Also published as US20030235340, US20120106621
Publication number 10447514, 447514, US 7844122 B2, US 7844122B2, US-B2-7844122, US7844122 B2, US7844122B2
Inventors Steven E. Saunders, Krasimir D. Kolarov, William C. Lynch
Patent Citations (19), Non-Patent Citations (11), Classifications (7), Legal Events (8)
US 7844122 B2
4. The computer program product as recited in claim 3, and further comprising interpolating omitted portions of the chrominance data upon decompression of the video data.
In order to keep the compression bit rate at a useful level, this extra information need not be included for every frame, but rather only for some frames. Typically, the extra information may be included for one frame of every 15 or so in the image, allowing a high-quality pause operation to occur at a time granularity of ½ second. This may be done in accord with observations of video pausing behavior. One can, however, include the extra information more often than this, at a cost in bit rate. One can also include it less often to get better compression performance, at a cost in user convenience. The tradeoff may be made over a range from two frames to 60 or more frames.
Equations #1 .1 and 1.2 Y 2 n + 1 = X 2 n + 1 - ⌊ X 2 n + X 2 n + 2 2 ⌋ eq . 1.1 Y 2 n = X 2 n + ⌊ Y 2 n - 1 + Y 2 n + 1 + 2 4 ⌋ eq . 1.2
Equation #1 .1 . R Y 2 N - 1 = - 1 3 ( X 2 N - 1 - ⌊ 3 X 2 N - 2 - X 2 N - 4 + 1 2 ⌋ ) eq 1.1 . R
Equation #1 .2 . R Y 2 N = X 2 N + ⌊ 3 Y 2 N - 1 - Y 2 N - 3 + 2 4 ⌋ eq 1.2 . R
Equations #1 .1 . L and 1.2 . L Y 0 = - 1 3 ( X 0 - ⌊ 3 X 1 - X 3 + 1 2 ⌋ ) eq 1.1 . L Y 0 = X 0 + ⌊ 3 Y 1 - Y 3 + 2 4 ⌋ eq 1.2 . L
Equations #2 .1 . Rinv , 2.2 . Rinv , 2.1 . L . inv , 2.2 . L . inv X 2 N - 1 = - 3 Y 2 N - 1 + ⌊ 3 X 2 N - 2 - X 2 N - 4 + 1 2 ⌋ eq 2.1 . R inv X 2 N = Y 2 N - ⌊ 3 Y 2 N - 1 - Y 2 N - 3 + 2 4 ⌋ eq 2.2 . R inv X 0 = - 3 Y 0 + ⌊ 3 X 1 - X 3 + 1 2 ⌋ eq 2.1 . L inv X 0 = Y 0 - ⌊ 3 Y 1 - Y 3 + 2 4 ⌋ eq 2.2 . L inv
Equations #3 .1 , 3.1 R , 3.2 , 3.2 L Y 2 n + 1 = ( X 2 n + 1 + 1 / 2 ) - ⌊ ( X 2 n + 1 / 2 ) + ( X 2 n + 2 + 1 / 2 ) 2 ⌋ eq 3.1 Y 2 N + 1 = ( X 2 N + 1 + 1 / 2 ) - ( X 2 N + 1 / 2 ) eq 3.1 R ( Y 2 n + 1 / 2 ) = ( X 2 n + 1 / 2 ) + ⌊ Y 2 n - 1 + Y 2 n + 1 4 ⌋ eq 3.2 ( Y 0 + 1 / 2 ) = ( X 0 + 1 / 2 ) + ⌊ Y 1 2 ⌋ eq 3.2 L
Equations #4 .2 , 4.2 L , 4.1 , 4.1 R ( X 2 n + 1 / 2 ) = ( Y 2 n + 1 / 2 ) - ⌊ Y 2 n - 1 + Y 2 n + 1 4 ⌋ eq 4.2 ( X 0 + 1 / 2 ) = ( Y 0 + 1 / 2 ) - ⌊ Y 1 2 ⌋ eq 4.2 L ( X 2 n + 1 + 1 / 2 ) = Y 2 n + 1 + ⌊ ( X 2 n + 1 / 2 ) + ( X 2 n + 2 + 1 / 2 ) 2 ⌋ eq 4.1 ( X 2 N + 1 + 1 / 2 ) = Y 2 N + 1 + ( X 2 N + 1 / 2 ) eq 4.1 R
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Cooperative Classification H04N19/167, H04N19/187, H04N19/30, H04N19/635
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAUNDERS, STEVEN E.;KOLAROV, KRASIMIR D.;LYNCH, WILLIAM C.;REEL/FRAME:014124/0610;SIGNING DATES FROM 20030527 TO 20030528
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAUNDERS, STEVEN E.;KOLAROV, KRASIMIR D.;LYNCH, WILLIAM C.;SIGNING DATES FROM 20030527 TO 20030528;REEL/FRAME:014124/0610