Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
2006-06-27
2006-06-27
Groody, James J. (Department: 2616)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000
Reexamination Certificate
active
07068915
ABSTRACT:
An apparatus and method for controlling a display time point of an MPEG bit stream of a recording medium which is capable of controlling accurately a display time point of an MPEG bit stream in case that an MPEG bit stream of a recording medium is processed to be displayed according to a special decoding command and returns to a normal decoding command. The apparatus for controlling a display time point of an MPEG bit stream of a recording medium includes: a crystal oscillator for generating a system clock frequency; a counter being initialized according to a system clock reference (SCR), for receiving the system clock frequency from the crystal oscillator, counting it and outputting a system time clock (STC), in a normal decoding mode; a PTS (Presentation Time Stamps) controller for receiving and storing a presentation time stamp of a predetermined picture in a special decoding mode, and outputting the stored presentation time stamp as an initial value of the counter if it returns to a normal mode; and a comparator for receiving the system time clock (STC) from the counter and a presentation time stamp (PTS) of a predetermined picture, comparing them and outputting a display command signal in case that the system time clock (STC) and the presentation time stamp (PTS) of a predetermined picture are identical to each other upon comparison.
REFERENCES:
patent: 5596420 (1997-01-01), Daum
patent: 5793927 (1998-08-01), Lane
patent: 6018376 (2000-01-01), Nakatani
patent: 6408338 (2002-06-01), Moon et al.
Watkinson, John; “MPEG-2”; 1999; Focal Press, pp. 224 and 227.
Fleshner & Kim LLP
Fletcher James A.
Groody James J.
LC Electronics Inc.
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