Image reading apparatus controllable by external apparatus
US5283662A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1992 |
| Grant date | Feb 1, 1994 |
| Priority date | — |
| Expiry date | Apr 9, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04791
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image reading apparatus, a signal generator generates a clock signal having a predetermined frequency, and generates a horizontal synchronizing signal in synchronous with the clock signal, and an image sensor reads a document image by scanning the document image in a main scan direction every horizontal scanning line in synchronous with the clock signal, and converts the read document image into an image signal. On the other hand, a stepping motor moves the image sensor and the document image relatively to each other in a subscan direction perpendicular to the main scan direction by one horizontal scanning line in synchronous with the clock signal. Further, a signal interface outputs the horizontal synchronizing signal and the image signal to an external apparatus. On the other hand, a receiver receives a stop request signal from the external apparatus. A controller controls the signal interface to stop the operations of the stepping motor and the signal interface, in response to the received stop request signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.