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US4418276A
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Optical bar code reader
Assignee: Sharp Corp
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Filing: 1982-01-25
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Granted: 1983-11-29
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Expires: 2002-01-25
Abstract
Abstract An optical bar code reader includes a detection system for detecting a large article on which a standard type bar code label is disposed, and a small article on which a reduced type or truncated type bar code label is disposed. When the large article is detected, the optical bar code reader is automatically placed in a coarse scanning mode. When the small article is detected, the optical bar code reader is automatically placed in a fine scanning mode.
Inventors
- 👤 Kenrow Yatsunami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:49
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10861; G06K7/10871; G06K2207/00; G06K2207/1012
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
An optical bar code reader which selectively operates in a coarse scanning mode and a fine scanning mode for reading a bar code label, said optical bar code reader comprising: detection means for detecting the kind of said bar code label; determination means for selectively developing a first control signal and a second control signal in response to an output signal of said detection means; and control means for selectively placing the optical bar code reader in said coarse scanning mode in response to said first control signal, and in said fine scanning mode in response to said second control signal.
Claim 2
Dependent Claim
101 words
An optical bar code reader which selectively operates in a coarse scanning mode and a fine scanning mode for reading a bar code label, said optical bar code reader comprising: detection means for detecting the kind of said bar code label; determination means for selectively developing a first control signal and a second control signal in response to an output signal of said detection means; and control means for selectively placing the optical bar code reader in said coarse scanning mode in response to said first control signal, and in said fine scanning mode in response to said second control signal.
Claim 3
Dependent Claim
32 words
The optical bar code reader of claim 1, wherein said detection means comprises an optical detection system for detecting the size of an article on which said bar code label is disposed.
Claim 4
Dependent Claim
45 words
The optical bar code reader of claim 2, wherein said optical detection system comprises: a first detection system for detecting a large article and developing a first detection signal; and a second detection system for detecting a small article and developing a second detection signal.
Claim 5
Dependent Claim
37 words
The optical bar code reader of claim 3, wherein said determination means develops said first control signal in response to said first detection signal, and develops said second control signal in response to said second detection signal.
References Cited (Backward Citations)
US4097729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |