GB1534529A - Method for scanning a surface - Google Patents
Method for scanning a surfaceInfo
- Publication number
- GB1534529A GB1534529A GB5311775A GB5311775A GB1534529A GB 1534529 A GB1534529 A GB 1534529A GB 5311775 A GB5311775 A GB 5311775A GB 5311775 A GB5311775 A GB 5311775A GB 1534529 A GB1534529 A GB 1534529A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scanning
- heads
- scanning heads
- parallel
- light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
- H04N1/1911—Simultaneously or substantially simultaneously scanning picture elements on more than one main scanning line, e.g. scanning in swaths
- H04N1/1912—Scanning main scanning lines which are spaced apart from one another in the sub-scanning direction
Abstract
1534529 Facsimile systems XEROX CORP 30 Dec 1975 53117/75 Heading H4F [Also in Division G2 and G3] A method of scanning a surface, comprises causing a plurality of scanning heads 10, Fig. 2, to move relative to a surface 12 so as to trace-out a plurality of spaced parallel scanning paths, and successively repeating the scanning movement while causing a continuous slower relative movement between the scanning heads and the surface in a direction substantially perpendicular to the scanning paths whereby an interlaced scan is produced. The following conditions are satisfied for N scanning heads spaced apart by M line pitches, the heads 10 being advanced by S line pitches during each scan of the surface: N = S and KS # LM where K is any integer and L is an integer less than N. The scanning heads 10 may be mounted on a member 11 for motion parallel with the axis of a drum bearing the surface 12. Alternatively, the light from a plurality of sources 23, Fig. 4, can be scanned across a cylindrical surface 14 or a planar surface 15 by a polygonal scanner 25, surfaces 14, 15 moving in directions 16, 17 respectively. The light is either modulated before reaching surface 14 or 15 in accordance with information to be reproduced, or modulated by reflection from information on the surface which is to be read. The apparatus may be capable of operation either at a transmitter or as a receiver. The data from the separate scanning heads may be transmitted in series or in parallel and bandwidth compression may be achieved by run length encoding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5311775A GB1534529A (en) | 1975-12-30 | 1975-12-30 | Method for scanning a surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5311775A GB1534529A (en) | 1975-12-30 | 1975-12-30 | Method for scanning a surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1534529A true GB1534529A (en) | 1978-12-06 |
Family
ID=10466709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5311775A Expired GB1534529A (en) | 1975-12-30 | 1975-12-30 | Method for scanning a surface |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1534529A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4268870A (en) * | 1978-04-28 | 1981-05-19 | Canon Kabushiki Kaisha | Recording apparatus for reading information from an original |
| US4296441A (en) * | 1978-12-14 | 1981-10-20 | Ricoh Company, Ltd. | Photoelectric scanning apparatus |
| EP0046118A2 (en) * | 1980-08-13 | 1982-02-17 | Matra | Method and device for scanning and/or reproducing documents |
| GB2183119A (en) * | 1985-10-14 | 1987-05-28 | Sharp Kk | Reader/recorder assembly in a facsimile system |
-
1975
- 1975-12-30 GB GB5311775A patent/GB1534529A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4268870A (en) * | 1978-04-28 | 1981-05-19 | Canon Kabushiki Kaisha | Recording apparatus for reading information from an original |
| US4296441A (en) * | 1978-12-14 | 1981-10-20 | Ricoh Company, Ltd. | Photoelectric scanning apparatus |
| EP0046118A2 (en) * | 1980-08-13 | 1982-02-17 | Matra | Method and device for scanning and/or reproducing documents |
| EP0046118A3 (en) * | 1980-08-13 | 1982-03-03 | Matra | Method and device for scanning and/or reproducing documents |
| GB2183119A (en) * | 1985-10-14 | 1987-05-28 | Sharp Kk | Reader/recorder assembly in a facsimile system |
| US4827355A (en) * | 1985-10-14 | 1989-05-02 | Sharp Kabushiki Kaisha | Reader/recorder assembly in a facsimile system |
| GB2183119B (en) * | 1985-10-14 | 1989-10-18 | Sharp Kk | Apparatus for recording an image |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19931230 |