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Class Information
Number: 348/736
Name: Television > Receiver circuitry > Sound traps
Description: Subject matter including apparatus at the receiver for substantially or totally eliminating frequencies at the frequency position of the sound signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7352411 |
Digital IF demodulator |
Apr. 1, 2008 |
| 7289167 |
Television tuner including distribution connectors |
Oct. 30, 2007 |
| 7268836 |
Television tuner device generating intermediate-frequency signal free from harmonic interference of reference signal |
Sep. 11, 2007 |
| 7212253 |
Home entertainment system audio handling |
May. 1, 2007 |
| 7030937 |
Simplified TV tuner intermediate frequency circuit |
Apr. 18, 2006 |
| 6927805 |
Compactly-designed television receiver |
Aug. 9, 2005 |
| 6914639 |
Combination tuner capable of receiving television signal and FM signal |
Jul. 5, 2005 |
| 6876401 |
FM-broadcast-receivable television tuner for preventing adjacent-channel interference |
Apr. 5, 2005 |
| 6850747 |
Image trap filter |
Feb. 1, 2005 |
| 6791627 |
Television signal receiver |
Sep. 14, 2004 |
| 6590619 |
Broadcast sound signal processing circuit |
Jul. 8, 2003 |
| 6519008 |
Filter circuit |
Feb. 11, 2003 |
| 6476878 |
Method and apparatus for audio signal processing |
Nov. 5, 2002 |
| 6426780 |
DTV receiver with low-band final I-F signal filtered for suppressing co-channel interfering NTSC audio carrier |
Jul. 30, 2002 |
| 6417890 |
Modulation of pilot tone amplitude in DTV broadcast for faster channel acquisition |
Jul. 9, 2002 |
| 6335769 |
Circuit for automatic discrimination of audio intermediate frequencies |
Jan. 1, 2002 |
| 6111613 |
Receiver for television multiplex broadcasting |
Aug. 29, 2000 |
| 6094229 |
IF signal processing circuit for video signal and sound system form in one integrated circuit |
Jul. 25, 2000 |
| 6081537 |
Signal trap device and method, recording medium replay device and method, and signal extraction device and method |
Jun. 27, 2000 |
| 5995169 |
SIF signal processing circuit |
Nov. 30, 1999 |
| 5953066 |
Bilingual television signal processor |
Sep. 14, 1999 |
| 5864373 |
Video signal detection circuit and video signal processing device |
Jan. 26, 1999 |
| 5754252 |
Multi-standard television receiver |
May. 19, 1998 |
| 5673088 |
Multi-broadcast selection apparatus |
Sep. 30, 1997 |
| 5663773 |
Demodulator for a complex-value vestigial sideband signal |
Sep. 2, 1997 |
| 5654774 |
Tuner for digital satellite receiver |
Aug. 5, 1997 |
| 5644368 |
Composite signal detecting apparatus having associated filter |
Jul. 1, 1997 |
| 5631714 |
Apparatus for automatically adapting the mean sound level of a television receiver |
May. 20, 1997 |
| 5577270 |
Receiver for eliminating a crosstalk of an adjacent broadcast |
Nov. 19, 1996 |
| 5523801 |
Upper and lower adjacent picture signal traps |
Jun. 4, 1996 |
| 5519505 |
Bypassing circuit for use in an audio signal recording/reproducing apparatus |
May. 21, 1996 |
| 5483298 |
Circuit arrangement for demmodulating the sound signals in a television signal in accordance with at least two different transmission standards |
Jan. 9, 1996 |
| 5379078 |
Trap circuit apparatus for television receiver |
Jan. 3, 1995 |
| 5337091 |
Video IF amplifier with auxiliary IF amplifier for intercarrier sound & AFT |
Aug. 9, 1994 |
| 5325188 |
Apparatus for NTSC signal interference cancellation through the use of digital recursive notch filters |
Jun. 28, 1994 |
| 5243431 |
Audio bandpass filter adaptive to differing television standards |
Sep. 7, 1993 |
| 5220602 |
NICAM compatible television signal converter |
Jun. 15, 1993 |
| 5126848 |
Circuit for preventing the interference of TV channel 6 broadcast |
Jun. 30, 1992 |
| 4991015 |
Method and circuit arrangement for identifying the presence or absence of at least one frequency of a known value in an input signal compound of a plurality of frequencies |
Feb. 5, 1991 |
| 4933767 |
Video intermediate frequency signal processing circuit |
Jun. 12, 1990 |
| 4811096 |
Video detector employing PLL system |
Mar. 7, 1989 |
| 4807036 |
Complex circuit component for a video signal circuit in a television receiver set |
Feb. 21, 1989 |
| 4766497 |
IF circuit with reduced sound attenuation for cable signals |
Aug. 23, 1988 |
| 4692803 |
CATV converter having phase locked loop for sound carrier wave frequency control |
Sep. 8, 1987 |
| 4660087 |
Video signal processing system with offset sound trap |
Apr. 21, 1987 |
| 4654707 |
Method and apparatus for volume control of a BTSC multi-channel sound signal |
Mar. 31, 1987 |
| 4642691 |
Television signal input filter |
Feb. 10, 1987 |
| 4571622 |
Hybrid frequency modulation feedback loop remote volume control circuit |
Feb. 18, 1986 |
| 4558364 |
Surface acoustic wave device |
Dec. 10, 1985 |
| 4484222 |
Intermediate frequency circuit with solid state trap |
Nov. 20, 1984 |
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