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:
Oct. 13, 1981
Filed:
Dec. 06, 1978
Rolf Muller, Seeheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To optimize recording current flow, either for maximum signal output or for best linearity of a changing input signal with respect to output voltage, and provide for automatic optimization of the recording signal level, a ramp or sawtooth wave generator is connected to a recording head, the recorded signal is immediately read and differentiated and the differentiated signal is level detected, for example for zero level for maximum output voltage or for a predetermined level before substantial change of the differentiated signal has resulted, thus providing for optimum linearity, the optimum signal level--as desired--being stored in a memory and used to control the excitation current for subsequent excitation of the transducer heads by a data source.