Automatic retrieval apparatus
US4457008A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1981 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | Jun 2, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K17/0019
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An automatic retrieval apparatus for use with an information containing film in a roll form, arranged to control driving of the information containing film by reading document marks or blips provided in the information containing film to correspond with respective frames. The retrieval apparatus includes a detecting circuitry for detecting the document marks to produce detecting signal, a latch circuitry to be set by impression of the detecting signal to it, and a calculation processing circuitry which effects predetermined calculation corresponding to the detection of the document marks when the latch circuitry is in the set state, and which produces signal for resetting the latch circuitry upon completion of the calculation processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.