Television – Receiver circuitry – Tuning
Reexamination Certificate
2005-05-24
2011-11-15
Hsia, Sherrie (Department: 2422)
Television
Receiver circuitry
Tuning
C348S635000
Reexamination Certificate
active
08059211
ABSTRACT:
A system and/or method that reduces the blanking time between changing from one video channel to another video channel, particularly from a digital video channel. The system provides as much video of the old video channel as possible for display until video from the new channel is acquired. Particularly, video output signal from the old channel which is stored in a video packet buffer is provided until the video packet buffer is underflowed (underflow condition or event). This is accomplished while the system is acquiring the new video channel (i.e. the selector in the case of an analog or different frequency digital video channel, or a PID filter of an MPEG transport stream decoder thereof in the case of a digital video subchannel of the old digital video channel). Blanking of the video output may or may not be accomplished if the new video is acquired before an video packet buffer underflow condition or event, else blanking may occur for only a short period of time. This can save about 400-500 ms.
REFERENCES:
patent: 3707597 (1972-12-01), Lunn
patent: 4330792 (1982-05-01), Naimpally
patent: 4535352 (1985-08-01), Haskell
patent: 4622578 (1986-11-01), Rzeszewski
patent: 4633293 (1986-12-01), Powers
patent: 4688082 (1987-08-01), Kato
patent: 4980767 (1990-12-01), Chao et al.
patent: 5450549 (1995-09-01), Casparian
patent: 5734432 (1998-03-01), Netravali et al.
patent: 5754253 (1998-05-01), Lee
patent: 5761210 (1998-06-01), Claydon et al.
patent: 5793436 (1998-08-01), Kim
patent: 6115080 (2000-09-01), Reitmeier
patent: 6385773 (2002-05-01), Schwartzman et al.
patent: 6441868 (2002-08-01), Park
patent: 6487719 (2002-11-01), Itoh et al.
patent: 6598233 (2003-07-01), Choi
patent: 6985188 (2006-01-01), Hurst, Jr.
patent: 7589789 (2009-09-01), Choi
patent: 2001/0010750 (2001-08-01), Setoguchi et al.
patent: 2001/0037512 (2001-11-01), Flickner et al.
patent: 2002/0057891 (2002-05-01), Shigaki
patent: 2003/0226153 (2003-12-01), Bessel et al.
patent: 2004/0098739 (2004-05-01), Rakib
patent: 1298259 (2001-06-01), None
patent: 1107601 (2001-06-01), None
patent: 62013174 (1987-01-01), None
patent: 2001292381 (2001-10-01), None
patent: 2002051325 (2002-02-01), None
Hurst et al., MPEG Splicing: A New Standard for Television—SMPTE 312M, SMPTE Journal, Nov. 1998.
Search Report dated Sep. 15, 2005.
Cooper Catherine A.
Hsia Sherrie
Opalach Joseph J.
Shedd Robert D.
Thomson Licensing
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