Video data transmission apparatus
US4631597A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 8, 1982 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Mar 8, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3278
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scanning array (12) comprising a plurality of photosensor elements (12a) is reciprocated perpendicular to the axis (12b) thereof to scan a rectangular area of an original document (69). After scanning the area, the document (69) is moved parallel to the axis (12b) of the scanning array (12) and the scanning array (12) reciprocated again to scan a next retangular area. This process is continued until the entire document (69) is scanned. Codes representing characters indicating the name, address or the like of the transmitting apparatus are stored in read only memories (92), (93), (94), (96). These codes are read out and mixed with the data signals for transmission in such a manner that the name and address are automatically reproduced by the receiving apparatus at the top of the reproduction. The code signals may be superimposed on the data signals or, preferably, transmission of the data signals is inhibited while the codes are being transmitted. Frequency division of scan clock pulses allows the codes to be reproduced in enlarged form. The name and address may be changed merely by replacing the memories (92), (93), (94), (96) with new memories in which the new desired name and a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.