Digital image signal recording apparatus
US5585963A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1994 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Nov 29, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/945
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital image signal recording apparatus can record a digital image signal in which a picture quality can be prevented from being deteriorated even when dubbing is repeated. The digital image signal recording apparatus in which a digital image signal is recorded in the form of a compressed digital image signal uses an even rounding circuit as a device for rounding a signal calculated result. The even rounding circuit includes an added value generating circuit (104) for generating an added value to be added to an input digital signal at its low-order bits to be rounded-off, an adder (102) for adding the added value to the input digital signal, and a circuit (106) for omitting the low-order bits of an added result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.