US3328761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Character reading system by detection between electron scanning lines and characters
Assignee: Hitachi Ltd
•
Filing: 1964-05-20
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Granted: 1967-06-27
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Expires: 1984-05-20
Abstract
No abstract record available.
Inventors
- 👤 Yamamoto Shinji
- 👤 Narita Sho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:42
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/20; G06V10/24; G06V10/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A CHARACTER READING SYSTEM OF THE TYPE WHEREIN EACH CHARACTER TO BE READ IS SCANNED BY A PLURALITY OF SCAN LINES FOR CHARACTER READING, AND ELECTRICAL PULSETRAIN SIGNALS ARE GENERATED WHEN THE SCAN LINES INTERSECT PARTS OF THE CHARACTER, THE COMBINATION COMPRISING: MEANS TO DIVIDE SAID SCAN LINES INTO A PLURALITY OF GROUPS; MEANS TO COMPARE, IN EACH OF SAID GROUPS, THE NUMBER OF PULSES PRODUCED IN EACH SCAN LINE WITH THE NUMBER OF PULSES PRODUCED IN ADJACENT SCAN LINES AND TO COMBINE THESE NUMBERS WHEN SAID NUMBERS ARE EQUAL; MEANS TO ENCODE OUTPUT SIGNALS DETECTED COMPARING MEANS; MEANS TO COMBINE SIGNALS ENCODED BY SAID ENCODING MEANS, FOR EACH SAID GROUP OF SCAN LINES; AND MEANS TO ACCOMPLISH RECOGNITION OF SAID CHARACTER BY PULSE CODE TRAINS THUS PRODUCED.
Claim 2
Dependent Claim
129 words
IN A CHARACTER READING SYSTEM OF THE TYPE WHEREIN EACH CHARACTER TO BE READ IS SCANNED BY A PLURALITY OF SCAN LINES FOR CHARACTER READING, AND ELECTRICAL PULSETRAIN SIGNALS ARE GENERATED WHEN THE SCAN LINES INTERSECT PARTS OF THE CHARACTER, THE COMBINATION COMPRISING: MEANS TO DIVIDE SAID SCAN LINES INTO A PLURALITY OF GROUPS; MEANS TO COMPARE, IN EACH OF SAID GROUPS, THE NUMBER OF PULSES PRODUCED IN EACH SCAN LINE WITH THE NUMBER OF PULSES PRODUCED IN ADJACENT SCAN LINES AND TO COMBINE THESE NUMBERS WHEN SAID NUMBERS ARE EQUAL; MEANS TO ENCODE OUTPUT SIGNALS DETECTED COMPARING MEANS; MEANS TO COMBINE SIGNALS ENCODED BY SAID ENCODING MEANS, FOR EACH SAID GROUP OF SCAN LINES; AND MEANS TO ACCOMPLISH RECOGNITION OF SAID CHARACTER BY PULSE CODE TRAINS THUS PRODUCED.
References Cited (Backward Citations)
GB820283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |