Samsung Electronics Co., Ltd.

Masamitsu Seki

Chul-min Kim

Chul-Min Kim

A magnetic recording and reproduction apparatus having a recording characteristic correction function corrects a recording characteristic according to characteristics of tape and head mechanism, to provide an optimal recording condition. The apparatus of the present invention records a test signal for measuring the characteristics of the tape and the head mechanism on tape, reproduces the recorded test signal, and then obtains a recording level at the time when reproduced output is maximized and a sideband level at the time when a ratio of a carrier component and a lower sideband component reaches a predetermined target value, respectively. Accordingly, an input video signal is modulated according to the obtained results. Thus, an effect is provided so that a signal can be recorded in an optimal recording condition irrespective of a deviation of the tape and the head.

Magnetic recording and reproducing apparatus for recording a signal in an optimal recording condition

A magnetic recording and reproduction apparatus corrects recording characteristics of a video signal. The apparatus comprises a luminance test signal generator for generating a frequency-modulated luminance test signal using a predetermined voltage, and a chroma test signal generator for generating a chroma test signal having a lower frequency. A recording level adjuster respectively adjusts levels of the frequency-modulated luminance test signal and the chroma test signal based on corresponding luminance and chroma recording levels. A recording unit mixes signals level-adjusted by the recording level adjuster to record a mixed test signal on a magnetic tape. A readout and preamplifying unit reads out the mixed test signal from the magnetic tape and preamplifies the read-out signal. A controller determines an optimal luminance recording level and an optimal chroma recording level to record a video signal on the magnetic tape based on the mixed test signal, and supplies the determined luminance recording level and chroma recording level to the recording level adjusting means. Accordingly, the apparatus sets optimal recording levels of the video signal capable of maximizing enhancement of the performance of the tape within a short period of time, and records the video signal, thereby improving a signal-to-noise ratio of the luminance signal and the color signal.

Magnetic recording and reproduction apparatus having a recording characteristic correction function of a video signal

A video tape copier, particularly a high-speed video tape copier for rapidly copying a video signal from a video tape onto another video tape. The high-speed video tape copier plays back a video tape at an N-tuple speed, band-passes the frequencies of video and audio signals having N-tuple frequencies, respectively, removes noise from the signal, and records the noise-free reproduced signal on another video tape at an N-tuple speed. Further, the video signal can be monitored regardless of whether the video signal is being accurately copied by dividing the frequency of the video signal reproduced at the N-tuple speed by N and displaying the frequency-divided signal as a normal speed video signal on a monitor.

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Tokyo, Japan

Masamitsu Seki