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:
May. 25, 1982
Filed:
Apr. 04, 1980
Kenzi Furuta, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
An early tape end alarm for a multispeed tape recorder has a hub around which a tape is wound and which revolves at the speed corresponding to an amount of tape wound therearound, a first pulse generating means for generating a first pulse (P1) with a period changing in accordance with the rotary speed of the hub, and an alarm means which compares a value (CD) corresponding to the period of the first pulse (P1) with a given value (PD) thereby to give an alarm to notify that a traveling tape will reach its tape end in a short-time on the basis of the result of the comparison. The early tape end alarm is characterized by a means for changing a condition to provide the comparison result in the alarm means in accordance with the tape traveling speed for determining the timing of the generation of the alarm substantially independent of a traveling speed of the tape.