Patent US3958874A successfully refreshed from Google Patents.
US3958874A
Expired / Lapsed
US
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Picture information retrieving system
Assignee: Hitachi Ltd
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Filing: 1974-04-12
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Granted: 1976-05-25
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Expires: 1994-04-12
Abstract
Abstract A picture information retrieval system in which each time an initial position detecting mark provided in correspondence with the first picture on an information recording medium for detecting the first picture passes the initial position during the retrieval operation the content of the counting section is corrected.
Inventors
- 👤 Shigeru Uchida
- 👤 Kanji Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:30
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/111; G03B21/113; G06; G06K; G06K17/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
171 words
In a picture information retrieving system including a counting section for counting pictures on an information recording medium, a memory section for setting therein the sequence number of a desired picture in advance, a comparing section for comparing the output signal of the memory section and the output signal of the counting section, driving means for moving the information recording medium, a driving circuit controlled by the output signal of the comparing section for driving the driving means to move the information recording medium, the improvement comprising only one detection mark provided in correspondence with the first picture on the information recording medium for indicating the initial position of the recording medium, means for detecting the initial position detection mark, means for resetting the counting section in accordance with the detected signal from said initial position mark detecting means during the retrieving operation to correct the content thereof, and means for controlling said driving circuit in response to the detection of the initial position detection mark to stop the driving means.
Claim 2
Dependent Claim
171 words
In a picture information retrieving system including a counting section for counting pictures on an information recording medium, a memory section for setting therein the sequence number of a desired picture in advance, a comparing section for comparing the output signal of the memory section and the output signal of the counting section, driving means for moving the information recording medium, a driving circuit controlled by the output signal of the comparing section for driving the driving means to move the information recording medium, the improvement comprising only one detection mark provided in correspondence with the first picture on the information recording medium for indicating the initial position of the recording medium, means for detecting the initial position detection mark, means for resetting the counting section in accordance with the detected signal from said initial position mark detecting means during the retrieving operation to correct the content thereof, and means for controlling said driving circuit in response to the detection of the initial position detection mark to stop the driving means.
Claim 3
Dependent Claim
37 words
A picture information retrieving system according to claim 1, wherein the controlling means controls the driving means so that the first picture on the information recording medium is optically projected on a screen immediately after power supply.
Claim 4
Dependent Claim
26 words
A picture information retrieving system according to claim 1, wherein said information recording medium consists of a roll-formed film strip on which the pictures are carried.
Claim 5
Dependent Claim
34 words
A picture information retrieving system according to claim 2, wherein a perforation is provided in correspondence with each of the pictures, and the counting of the pictures is carried out by counting the perforations.
Claim 6
Dependent Claim
18 words
A picture information retrieving system according to claim 2, wherein said driving means consists of a pulse motor.
Claim 7
Dependent Claim
54 words
A picture information retrieving system according to claim 1, wherein said counting section includes a frequency divider and a counter, said frequency divider being responsive to oscillation signals for providing divided oscillator signals to said counter for counting, said frequency divider and said counter being reset by said detecting means during the retrieval operation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |