Magnetic head driver amplifier for oblique track recording tape

Details Magnetic head driver amplifier for oblique track recording tape Magnetic head driver amplifier for oblique track recording tape

1989-03-23

1991-09-24

Severin, David J.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 64, 360 68, G11B 509, G11B 1514, G11B 502

Patent

active

050518470

ABSTRACT:
A differential amplifier (15, 16) which drives a recording head and is located on the headwheel which carries the recording head is equipped with automatic switchover provided by a transistor (18) in series with a resistance and the emitters of the differential amplifier. In the absence of signals in the rotor of the rotary transformer which supplies signals to be amplified for recording, this differential amplifier has substantially no idling current, but in response to the presence of a signal in the rotor, a switchover signal is provided making the transistor (18) in the emitter circuit of the differential amplifier conductive and putting the differential amplifier into class A operation. As a result, digital video signals can be recorded at a high data rate without distortion, whereas unintended erasure of the magnetic tape by direct current components in the winding of the recording head is prevented.

REFERENCES:
patent: 4477846 (1984-10-01), Cottrell et al.
patent: 4647988 (1987-03-01), Takehara
patent: 4905104 (1990-02-01), Okamoto et al.
"Towards Take Off of the 4:2:2 DUTR" by Eguchi et al., 1985.

Affiliated with

Also associated with

Rating

Magnetic head driver amplifier for oblique track recording tape does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic head driver amplifier for oblique track recording tape, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic head driver amplifier for oblique track recording tape will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1701112