JPS62161303U

JPS62161303U -

Info

Publication number: JPS62161303U
Application number: JP4825786U
Authority: JP
Priority date: 1986-03-31
Filing date: 1986-03-31
Publication date: 1987-10-14

Description

[Brief explanation of drawings]

図面は本考案による記録・再生信号の変動補正
回路の一実施例を示すブロツク図である。３……時間軸補正回路、７……キヤプスタン、
８……磁気テープ、１０……角度検出回路、１１
……標準磁気テープ、１９……メモリ回路。 The drawing is a block diagram showing an embodiment of a recording/reproduction signal fluctuation correction circuit according to the present invention. 3... Time base correction circuit, 7... Capstan,
8...Magnetic tape, 10...Angle detection circuit, 11
...Standard magnetic tape, 19...Memory circuit.

Claims

[Claims for Utility Model Registration] (1) A recording/reproducing device that runs a magnetic tape by rotating a capstan, comprising a memory circuit in which eccentricity data for each predetermined rotation angle of the capstan is recorded in advance, and a rotation angle of the capstan. an angle detection circuit that detects and reads out corresponding eccentricity data from the memory circuit using its detection output, and a time that corrects fluctuations in the time axis direction of a recording or reproduction signal based on the readout eccentricity data. What is claimed is: 1. A recording/playback signal fluctuation correction circuit comprising: an axis correction circuit; (2) The time axis correction circuit includes a clock pulse generation circuit, a frequency division circuit that variably divides the clock pulse output from the clock pulse generation circuit based on the eccentricity data read from the memory circuit, and an output from this frequency division circuit. A semiconductor element delay circuit that controls the amount of delay in the time axis direction of a recording or reproducing signal by a control clock pulse that controls the recording/reproducing signal fluctuation correction according to claim (1) of the utility model registration claim. circuit. (3) The eccentricity data pre-recorded in the memory circuit is obtained by reproducing a standard magnetic tape on which a reference signal with an extremely low frequency of wow and flutter is recorded, and the eccentricity data is detected at each unit rotation angle of the capstan. A recording/reproduction signal fluctuation correction circuit according to claim 1 or 2, which is a utility model registered as a phase difference between the signal and the reference signal. (4) The eccentricity data recorded in advance in the memory circuit is obtained by reproducing a standard magnetic tape on which a standard signal with an extremely low frequency of wow and flutter is recorded, and the eccentricity data is detected at each unit rotation angle of the capstan. A recording/reproduction signal fluctuation correction circuit as set forth in claim (1) or (2) of the utility model registration claim, which is a frequency count number of the signal.