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:
Dec. 28, 1993
Filed:
Oct. 17, 1989
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A bar code printing apparatus includes a rotary. encoder for outputting encoder pulses in two different phases. The direction in which film is transported is discriminated by the encoder pulses and indicated by a forward direction pulse or a reverse direction pulse indicated for a predetermined length of transported film. A direction discriminating circuit comprises a clock pulse generator for generating clock pulses at a frequency higher than that at which the encoder pulse is output, a delay circuit for slightly delaying the clock pulse, a first latch circuit for latching one of the encoder pulses in synchronism with the clock pulse to output a transportation signal; a second latch circuit for outputting a latch condition signal; and two AND gates, each connected to the first and second latch circuits and the delay circuit, for outputting a forward direction pulse and a reverse direction pulse, respectively.