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:
Apr. 13, 1993
Filed:
Jun. 07, 1990
Akira Iketani, Higashiosaka, JP;
Hiromasa Mizuki, Tokushima, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A train of data blocks, each carrying digital data and ID data are produced from a reading head as a tape passes the cylinder. A memory having a plurality of sections is provided, and a plurality of counters are provided correspondingly to the sections. The digital data are stored in a memory section identified by the ID data. Each time the digital data for one block is stored in a section in the memory, a counter corresponding to that section is incremented, and each time the digital data for one block is read out from a section in the memory, a counter corresponding to that section is decremented. Thus, as long as counter repeats '0' and '1', the data block is properly stored and properly read. However, if any one of the counters shows a number other than '0' and '1', it is understood that the writing or reading has been carried out twice in a row for the same section in the memory. Thus, an error in the ID data can be detected.