The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 04, 1985
Filed:
Jun. 21, 1982
Kohhei Sasamura, Sagamihara, JP;
Takaro Mori, Sagamihara, JP;
Victor Company of Japan, Limited, Yokohama, JP;
Abstract
In a circuit arrangement for magnetic recording apparatus having a multi-track head, a resistor network is provided so that each operational amplifier associated with each magnetic head included in the multi-track head functions as a constant-current circuit. The resistances of four resistors in the resistor network are selected so that no current flows via one resistor interposed between the output terminal of the operational amplifier and a terminal of the head in receipt of no input signal even if leakage flux emitted from adjacent head is picked up by the head. Therefore, undesirable influence due to crosstalk can be effectively prevented, providing high quality reproduction in the case of audio signal recording or low bit error rate in the case of digital recording.