Rotating D.C. coupled record amplifier for digital magnetic reco

Details Rotating D.C. coupled record amplifier for digital magnetic reco Rotating D.C. coupled record amplifier for digital magnetic reco

1983-03-21

1985-12-24

Cardillo, Jr., Raymond F.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

360 46, 360 51, G11B 502, G11B 509

Patent

active

045610274

ABSTRACT:
A magnetic recording system transmits data edge information and clock signals through a rotary transformer. From the signals derived from secondary side of the transformer the data is reconstructed from the edge information and retimed using the clock signals. A record amplifier is D.C. coupled to a recording head for good pulse response. The amplifier can be a differential one with a pulsed current source for still better pulse edge response.

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Two schematic diagram pages of a Cartravision Video Tape Recorder, publically available before 1970. One page is "Figure 12 Video Servo Electronic 3 of 3," the other page is Figure 16 VTR Functional Block Diagram.
RCA Television Tape Recorder TR-800, manufactured by RCA Corporation, Commercial Communications Systems Division, Service Manual, vol. 2, dated Sep. 1981, Scanner Assembly IB-94482, FIGS. 13 and 16.

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