KR970029596A - Tape winding speed control device of video cassette recorder - Google Patents

Abstract

The present invention relates to a cassette tape winding speed control apparatus of V. C., which detects the remaining amount of a key input unit (100) for providing a key signal for driving a cassette tape, and the remaining amount of the cassette tape on the supply reel side. A first detector (300) for outputting a digital signal, a second detector (400) for detecting a residual amount of tape on the take-up reel side and outputting a digital signal accordingly; When a key signal for REW or FF is input from the key input unit 100, the microcomputer 200 generating a control signal according to the digital signal provided from the first detector 300 or the second detector 400, and the microcomputer 200. And a capstan motor driving unit 500 for generating a driving signal according to the control signal of the control panel, and a capstan motor 600 driving the cassette tape by driving according to the driving signal of the capstan motor driving unit 500.

Therefore, the present invention effectively detects the remaining amount of the cassette tape by separating the FF mode and the REW mode, and controls the running speed of the cassette tape according to each case, thereby effectively preventing the cassette tape from being damaged during the high-speed running of the cassette tape. There is an effect that can be prevented.

Description

Tape winding speed control device of video cassette recorder

As this is a public information case, the full text was not included.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. Is a block diagram of a tape winding speed control apparatus of a video cassette recorder according to a preferred embodiment of the present invention.

Claims (3)

VC tape winding speed for controlling the running speed of the cassette tape when the cassette tape loaded in the deck portion of VC is driven by executing the fast forward (FF) or rewind (REW) function. A control device, comprising: a key input unit (100) for inputting a key signal for driving the cassette tape to REW or FF; A first detection unit (300) for detecting the remaining amount of tape on the supply reel side of the cassette tape and outputting a digital signal according thereto; A second detector 400 which detects a remaining tape amount on the take-up reel side of the cassette tape and outputs a digital signal accordingly; A microcomputer 200 generating a control signal according to an output signal of the first or second detectors 300 and 400 when a key signal for REW or FF is input from the key input unit 100; A capster motor driver 500 generating a driving signal according to a control signal provided from the microcomputer 200; V. C. cassette winding speed control device including a capstan motor (600) for driving in accordance with the drive signal provided from the capster motor driving unit (500) to run the cassette tape. The method of claim 1, wherein the first and second detectors 300 and 400 detect the remaining amount of the tape on the supply reel side and the take-up reel side, and then measure the digital values sampled by a predetermined number with respect to the total amount of the tape. A V.C.R cassette tape winding speed control device, which is digitally converted into corresponding data and outputted. 2. The V according to claim 1, wherein the microcomputer (200) compares and outputs each preset control signal corresponding to the respective digital data provided from the first and second detection units (300, 400). C. Cassette tape winding speed control device. ※ Note: The disclosure is based on the initial application.