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. 20, 1987
Filed:
Jan. 17, 1986
Michael J Westall, Glendora, CA (US);
Avicom International, Inc., Pasadena, CA (US);
Abstract
A method of calibrating the addresses of messages on a copy record duplicated from a master record of such messages having known addresses. Prior to duplication of the master record, first and second cues are recorded on the master record, which cues are separated by a known or determined distance along a track of the master record. After the copy record has been duplicated from the master record and installed in the message retrieval system, the system determines the distance between the duplicated cues on the copy record and derives a correction factor from the distance so determined and the known distance between the recorded cues on the master record. When a message is selected for being reproduced by the message retrieval system, the correction factor is applied to the address of the selected message on the master record to obtain a corrected address of the selected message on the copy record. The invention further includes the system utilizing the present method, as well as the copy record and the master record for use in connection with such system.