Circuit for calculating DC value in digital recording and reprod

Details Circuit for calculating DC value in digital recording and reprod Circuit for calculating DC value in digital recording and reprod

1993-08-26

1994-12-06

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Comparing counts

377 2, 341 58, 341 59, G06M 302

Patent

active

053717716

ABSTRACT:
A circuit for calculating a DC value for use in a code conversion apparatus of a recording and reproducing system includes a first storing element, second storing element, parallel to serial convertor, selecting circuit and a DC value calculating circuit. The DC value calculating circuit includes a load pulse generator for generating a second clock signal and a load pulse which is frequency-divided by a predetermined value according to a master clock signal; a counter for loading a reference value by the signal supplied from the load pulse generator, and counting up/down the serial data supplied from the parallel to serial convertor; a detector for detecting of whether or not the value counted in the counter is the same as the reference value; third storing element for holding a previous input value when the reference value is the same as the value counted in the counter, and storing the value counted in the counter when the reference value is not the same as the value counted in the counter; and a comparator for comparing the magnitude of the signal supplied from the third storing element with the magnitude of the reference value and supplying the result value as a signal for controlling the operation of the selecting circuit.

REFERENCES:
patent: 4988999 (1991-01-01), Uehara et al.
patent: 5270714 (1993-12-01), Tanaka et al.

Affiliated with

Also associated with

Rating

Circuit for calculating DC value in digital recording and reprod does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for calculating DC value in digital recording and reprod, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for calculating DC value in digital recording and reprod will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-220352