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:
Feb. 23, 1982
Filed:
Oct. 05, 1979
Soichi Onishi, Yao, JP;
Shigeru Kitano, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A data recorder for recording data in the form of audio or digital signals into a cassette tape comprises a first circuit for recording check signals and a second circuit for recording true signals. The first circuit allows the check signals to be recorded in a first section of the cassette tape to check the amplitude of a sound volume in which the check signals are sounded. The second circuit enables the true signals to be recorded in a second section of the cassette tape under the condition that the amplitude of the sound volume of the check signals is adequately adjusted. A data reader for reading out the thus recorded data includes a first detection circuit for determining whether the read-out signals have a sufficient level for reading out purposes, an announcing device for announcing the need to adjust a sound volume, and a read-out circuit for reading out true data from the cassette tape.