Image memory circuit for use in a rotation of image data
US5068904A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Sep 28, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Sep 28, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/3877
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A memory circuit receives (n.times.n) data dots of an image data and stores a plurality of data dots selected from the image of data in a single address. Before the plurality of data dots are stored in the single memory, they are shifted in a transverse row direction by one bit with regard to each of the rows and are shifted in a vertical column direction by one bit with regard to each of the columns. The image data is rotated in a step-like manner by 90.degree. clockwise or anticlockwise. The image data is rotationally shifted during write/read times, and the address in which the data dots are stored is decoded in units of data dots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.