Patent US3748483A successfully refreshed from Google Patents.
US3748483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating device for use in optical data sensing equipment
Assignee: Svenska Dataregister AB
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Filing: 1971-12-14
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Granted: 1973-07-24
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Expires: 1991-12-14
Abstract
Abstract Within the housing of a handheld optical reader lamps are arranged for producing a light spot on a document bearing readable information indicia. The light produced by the lamps is fed to a light spot opening in the housing of the reader. An indicating means in the housing is provided by apertures which serve to transmit a small part of the light produced by the lamps. Via a control device the light is switched off each time a specific indicia is found on the document. The light is not switched on until a data processing unit, e.g. a cash register, is ready for receiving new data.
Inventors
- 👤 G Englund
- 👤 R Myren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:51
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10881
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
184 words
In a data processing system of the type including a data utilization unit and wherein an optical reader device is provided to scan an information carrier and provide a corresponding data signal output to the data utilization unit, the improvement comprising: means including a light source housed in said optical reader and providing a source of illumination for the operation of said optical reader in transducing the information stored on said information carrier; means providing a control signal indication that said data utilization unit is ready to receive a data signal; light control circuit means responsive to said control signal for effecting illumination of said light source to provide for data transduction from said information carrier, said control circuit means being further responsive to an end of data signal sensed from said information carrier to provide for the shut off of the illumination of said light source; said optical reader having a casing including a plurality of light transmitting areas disposed therein and in communication with said light source so as to provide a visual indication of the illumination state of said light source.
Claim 2
Dependent Claim
184 words
In a data processing system of the type including a data utilization unit and wherein an optical reader device is provided to scan an information carrier and provide a corresponding data signal output to the data utilization unit, the improvement comprising: means including a light source housed in said optical reader and providing a source of illumination for the operation of said optical reader in transducing the information stored on said information carrier; means providing a control signal indication that said data utilization unit is ready to receive a data signal; light control circuit means responsive to said control signal for effecting illumination of said light source to provide for data transduction from said information carrier, said control circuit means being further responsive to an end of data signal sensed from said information carrier to provide for the shut off of the illumination of said light source; said optical reader having a casing including a plurality of light transmitting areas disposed therein and in communication with said light source so as to provide a visual indication of the illumination state of said light source.
Claim 3
Dependent Claim
40 words
A data processing system as set forth in claim 1 wherein one end portion of said casing is cone shaped and said light transmitting areas comprise a plurality of apertures symmetrically disposed in the surface of said cone shaped portion.
References Cited (Backward Citations)
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |