A recording circuit having means to automatically set the record

Details A recording circuit having means to automatically set the record A recording circuit having means to automatically set the record

1985-07-08

1987-12-15

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

360 66, 360 68, H04N 5782, H04N 979, G11B 545

Patent

active

047137002

ABSTRACT:
In a magnetic recording circuit with a bias current circuit adapted to superimpose a bias current from a bias oscillator on a recording signal and to supply a resultant signal to a magnetic head, there is provided a resistor for detecting the bias current flowing through the magnetic head, a rectifier circuit for rectifying and smoothing a signal developing across the resistor, and a control circuit for comparing the output voltage of the rectifier circuit with a reference voltage and producing an output signal which controls the oscillation level of the bias oscillator, whereby the bias current flowing through the magnetic head can automatically be set to a predetermined level. A variable resistor for adjustment of the bias current and adjustment step for the variable resistor can be dispensed with.

REFERENCES:
patent: 4353100 (1982-10-01), Inoue
patent: 4438466 (1984-03-01), Fawkes et al.
patent: 4454548 (1984-06-01), Jensen
patent: 4533961 (1985-08-01), Shibata et al.
patent: 4616273 (1986-10-01), Ishii et al.

Affiliated with

Also associated with

Rating

A recording circuit having means to automatically set the record 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 recording circuit having means to automatically set the record, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A recording circuit having means to automatically set the record will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1223472