Communications: electrical – Audible indication – Percussion-type sound producer
Patent
1981-05-11
1984-02-07
Smith, Jerry
Communications: electrical
Audible indication
Percussion-type sound producer
340347M, 328128, 328165, 307543, 307555, 364825, H03K 1302, H03K 508, H03H 1112, H04B 1500
Patent
active
044306415
ABSTRACT:
A circuit including a conventional digital-to-analog converter (DAC) and a charge pump for producing an analog representation of an input waveform defined by an input digital bit stream, the analog representation being relatively free of spurious aberrations usually present in the output of a conventional DAC. The charge pump and an associated integrator are used to produce a first approximation of the input waveform and the DAC and an associated detuned slew-rate filter are used to maintain the first approximation in long-term conformance with a more accurate second approximation. Spurious aberrations in the second approximation are integrated over several steps of the input bit stream, thereby minimizing their adverse impact on the relatively true first approximation.
REFERENCES:
patent: 3628061 (1971-12-01), Jackman
patent: 3676698 (1972-07-01), Hunter
patent: 3676784 (1972-07-01), Le Compte
patent: 3755750 (1973-08-01), Heberling
patent: 3893036 (1975-07-01), Cavoretto et al.
patent: 3912916 (1975-10-01), Grun et al.
patent: 3918046 (1975-11-01), Rivers
patent: 3919649 (1975-11-01), Logemann
patent: 4016559 (1977-04-01), Pastoriza
patent: 4101839 (1978-07-01), Poole et al.
patent: 4132908 (1979-02-01), Hughes
patent: 4163948 (1979-08-01), Rieger et al.
patent: 4204170 (1980-05-01), Kage
patent: 4275453 (1981-06-01), Wagner
Baur Bruce K.
Ollis John R.
Niessen William G.
Smith Jerry
Spence Thomas J.
Tektronix Inc.
LandOfFree
Charge-pump glitch filter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Charge-pump glitch filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Charge-pump glitch filter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2163915