Apparatus and method for automatically adjusting recording speed of a recorder
US5315452A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Mar 10, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and a method for automatically adjusting the recording speed of a recorder, such as a video cassette recorder (VCR) are provided, wherein the recording speed is automatically changed by comparing the remaining length of a recording medium such as a tape with the remaining recording time of a program, thereby enabling the program to be recorded without interruption. The apparatus includes a reel rotation sensing device for sensing the states of a take-up reel and a supply reel, data input device for inputting data and setting a mode, a memory for storing the data input from the data input device, a system-control microcomputer for calculating a remaining tape length in accordance with the output signal from the reel rotation sensing device, and outputting a signal for controlling the tape's recording mode by comparing the remaining tape length with the data recorded in the memory, and a servo microcomputer for driving motors in accordance with the control signal from the system-control microcomputer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.