A/V amplifier and method for driving the same

Details A/V amplifier and method for driving the same A/V amplifier and method for driving the same

2006-02-23

2011-12-20

Faulk, Devona (Department: 2614)

Electrical audio signal processing systems and devices

Switching

C381S081000, C381S120000, C381S028000, C381S022000, C381S011000

Reexamination Certificate

active

08081781

ABSTRACT:
For achieving an audio reproduction with high sound quality, in a multi-channel A/V amplifier, front speakers are driven with a parallel-drive bi-amplifier arrangement upon stereo reproduction. In the case of the multi-channel reproduction mode, the switching circuit allows an output signal of each channel of the decoder to be sent to speakers via amplifiers for each channel in one-to-one correspondence. On the other hand, in the case of the 2-channel stereo reproduction mode, the switching circuit allows at least two amplifiers among the plurality of amplifiers to be connected in parallel between the output signal for each of the channels L and R of the decoder and the speakers for each of the channels L and R, and also allows the timing of the output signals of the respective amplifiers to be varied.

REFERENCES:
patent: 4953213 (1990-08-01), Tasaki et al.
patent: 5875250 (1999-02-01), Kuo et al.
patent: 6167140 (2000-12-01), Watanabe
patent: 7265617 (2007-09-01), Ohkuri
patent: 0 080 771 (1983-06-01), None
patent: 0 866 638 (1998-09-01), None
patent: 6047316 (1985-04-01), None
patent: 60192512 (1985-12-01), None
patent: 623119 (1990-08-01), None
patent: 09271100 (1997-10-01), None
patent: 2004048333 (2004-02-01), None
PCT International Search Report dated May 16, 2006.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 140747/1983 (Laid-Open No. 47316/1985), (Nippon Columbia Co., Ltd.), Description, p. 2, lines 1 to 7; Fig. 1, Apr. 3, 1985.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 80262/1984 (Laid-open No. 192512/1985), (Nippon Columbia Co., Ltd.), Description, p. 3, lines 5 to 9; Fig. 1, Dec. 20, 1985.
Supplementary European Search Report dated Mar. 4, 2011.

Affiliated with

Also associated with

Rating

A/V amplifier and method for driving the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A/V amplifier and method for driving the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A/V amplifier and method for driving the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4303799