Electrical audio signal processing systems and devices – Noise or distortion suppression – Spectral adjustment
Reexamination Certificate
2008-07-15
2008-07-15
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Noise or distortion suppression
Spectral adjustment
C381S094100, C381S098000, C250S2140RC
Reexamination Certificate
active
07400735
ABSTRACT:
The present invention relates to a wave-filtering device with an adjustable frequency bandwidth installed in an output unit of an integrated system. The wave-filtering device is used for receiving a first output signal comprising an alternating current signal and a direct current bias voltage, and comprises a direct current bias voltage detector for receiving the first output signal and obtaining a control voltage according to the direct current bias voltage. A low-pass wave filter is electrically connected to the direct current bias voltage detector and receives the control voltage so as to adjust the frequency bandwidth. The low-pass wave filter is used for receiving the first output signal and obtaining a second output signal to be the output of the wave-filtering device with adjustable frequency bandwidth. The low-pass wave filter comprises a variable resistance the value of which varies in accordance with the value of the control voltage.
REFERENCES:
patent: 4563651 (1986-01-01), Ohta et al.
patent: 4609878 (1986-09-01), Rodgers
patent: 5050217 (1991-09-01), Orban
patent: 5510752 (1996-04-01), Gagon
patent: 5559340 (1996-09-01), Nakamura et al.
patent: 6055318 (2000-04-01), Whitecar
Chin Vivian
Hsu Winston
Kurr Jason
Wistron Corp.
LandOfFree
Wave-filtering device with an adjustable frequency bandwidth does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wave-filtering device with an adjustable frequency bandwidth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wave-filtering device with an adjustable frequency bandwidth will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2773167