Filtering apparatus, digital broadcast receiving apparatus...

Details Filtering apparatus, digital broadcast receiving apparatus... Filtering apparatus, digital broadcast receiving apparatus...

2011-08-16

2011-08-16

Lee, Young (Department: 2485)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C370S389000, C370S392000, C725S039000, C725S142000, C375S350000

Reexamination Certificate

active

08000396

ABSTRACT:
A filtering apparatus which includes first filters assigned first numbers different from each other and which detect packets having a previously specified identifiers. The apparatus includes information registers disposed in correspondence with the first filters and which store a predetermined number of bits, and includes a condition storage portion that stores second numbers different from each other and section conditions associated with the second numbers. The apparatus includes a determination portion that determines a number range specifying a part of the second numbers for each first filter as not overlapping each other based on the first numbers of each first filter and selects a second number from each number range per first filter based on values of bits in each information register, and a second filter that checks whether the packet detected by each first filter satisfies the section condition associated with the second number determined for each first filter.

REFERENCES:
patent: 2001/0002907 (2001-06-01), Jeong et al.
patent: 2001/0009034 (2001-07-01), Lee
patent: 2002/0106018 (2002-08-01), D'Luna et al.
patent: 2000-22747 (2000-01-01), None
patent: 2002-185960 (2002-06-01), None
patent: 2003-51801 (2003-02-01), None
U.S. Appl. No. 11/476,025, filed Jun. 28, 2006, Tomizawa.

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