KR950025744A - Audio signal recording format and recording method of video cassette recorder and apparatus therefor - Google Patents

Abstract

The present invention relates to an audio signal recording format, a recording apparatus and a method thereof in a VCR. According to the present invention, in order to record a video signal in a predetermined area on a helical track and an audio signal of a predetermined number N channels in the remaining area, the audio signal is divided into a predetermined number of sectors and recorded, and between or between the video area and the audio area. In magnetic tapes with edit gaps for independent editing between audio and audio sectors, the number of audio sectors on one helical track is 1, / M (N, M is an integer greater than or equal to 2) relative to the number of channels. Disclosed are a recording format, a method of recording the same, and an apparatus thereof. According to the present invention, as the number of audio sectors is reduced by 1 / M compared to the number of channels, the audio or video signal can be recorded by the edit gap area reduced, thereby improving the recording capacity.

Description

Audio signal recording format and recording method of video cassette recorder and apparatus therefor

Since this is an open matter, no full text was included.

2 is a block diagram according to an embodiment of an audio signal recording apparatus of a VCR according to the present invention;

3 is a view for explaining the angle of the magnetic tape is wound around the head and the drum on the drum to help the understanding of the present invention,

4 is an operation timing diagram for the audio signal recording apparatus shown in FIG.

Claims (13)

A video signal is recorded in a predetermined area on the helical track, and audio signals of a predetermined number (N) of channels are divided into a predetermined number (N) of audio sectors and recorded in the remaining area, and between or between the video area and the audio area. In a magnetic recording medium having an edit gap for independent editing between an audio sector and an audio sector, M audio signals of N audio sectors are converted into M audio signals so that the number of audio sectors on a track becomes 1 / M relative to the number of channels. An audio signal and a recording format of a VCR, characterized in that the edit gap is reduced to 1 / M by being distributed in tracks (where N and M are integers of 2 or more). A video signal is recorded in a predetermined area on the helical track, and a predetermined number (no audio signal of a channel of NO is divided into an audio sector of an integer N) and recorded in the remaining area. An audio signal recording method for recording an audio signal on a magnetic recording medium having an edit gap for independent editing between audio sectors, the method comprising: converting an analog audio signal input from an audio signal source to N channels into a digital signal; A first data conversion step, a storage step of storing digital signals of N channels in the first data conversion step, a second data conversion step of converting a signal stored in the storage step into a signal suitable for recording on the magnetic recording medium; And the number of audio sectors on the helical track is 1 / M with respect to the number of channels. And a recording control process of recording and controlling the audio signals of the N audio sectors changed in the second data conversion process into M tracks, thereby reducing the edit gap to 1 / M. (Where N and M are integers of 2 or more) The audio signal recording method of a VCR according to claim 2, wherein the number of audio sectors is 1/2 of the number of channels. The audio signal recording method of a VCR according to claim 2, wherein in the storing process, audio channels of N channels are stored as much as M sectors of audio sectors than M audio sectors. The audio signal recording method according to claim 2, wherein in the recording control process, audio signals of the same channel are recorded in adjacent sectors on the magnetic recording medium for independent editing of each channel. A digital video signal is recorded in a predetermined area on the track, and a digital audio signal of a predetermined number (N) of channels is divided into a predetermined number (N) of audio sectors and recorded in the remaining area, between the video area and the audio area or the audio. An audio signal recording apparatus for recording an audio signal on a magnetic recording medium having an edit gap for independent editing between a sector and an audio sector, comprising: a plurality of memory means for dividing and storing the digital audio signal into N channels; And control means for distributing audio signals of N audio sectors stored in the plurality of memory means to M tracks such that the number of audio sectors on the one track becomes 1 / M relative to the number of channels. An audio signal recording apparatus characterized by reducing an edit gap to 1 / M, provided that N and M are integers of 2 or more. 7. The recording apparatus according to claim 6, wherein the recording control means comprises: a plurality of heads composed of N pieces on a drum; Recording processing means for processing an N-channel audio signal output from the plurality of memory means into a signal suitable for recording on a magnetic recording medium; And control signal generation means for generating a memory control signal for controlling the audio signal to be read from the corresponding memory of the plurality of memory means and a head control signal for enabling the heads. Device. 8. The audio of a VCR according to claim 7, wherein the recording control means records audio signals of the same channel by the N / M heads in adjacent sectors on the magnetic recording medium for independent editing of each channel. Signal recorder. 7. The audio signal recording method of a VCR according to claim 6, wherein audio signals of N channels are stored as much as M sectors of audio sectors, respectively, than M reference audio sectors. 8. The memory control signal generated by the control signal generating means is a signal that is activated for an audio sector period of M times at a predetermined time point of the actual period in which the magnetic recording medium is wound on the head-mounted drum. An audio signal recording apparatus of a VCR. 8. The VCR of claim 7, wherein the head control signal generated by the control signal generating means is a signal in which the N / M heads are simultaneously enabled only during the actual period in which the magnetic recording medium is wound on the drum. Audio signal recorder. A video signal is recorded in a predetermined area on the helical track, and audio signals of a predetermined number (N) of channels are divided and recorded in a predetermined number (N) of audio sectors in the remaining area, between the video area and the audio area or the audio. An audio signal recording method for recording an audio signal on a magnetic recording medium having an edit gap for independent editing between a sector and an audio sector, wherein the audio signal input from the audio signal source to the N channel is converted into a digital signal. Digital / analog conversion means; N memory means for storing the N-channel digital audio signal; And N heads for recording the outputs of the N memory means in a predetermined audio sector. Alternately, while the N / 2 heads are enabled, the remaining N / 2 heads are provided with a head-in signal for disabling and a control signal generating means for generating respective memory enable signals of the N memories. And reduce the edit gap by 1/2, and the N / 2 heads simultaneously record data of one selected memory among the N memories in a predetermined audio track to record audio signals of the same channel in adjacent sectors. Audio signal recording apparatus of the VCR. The control signal generating means according to claim 12, wherein the control signal generating means generates a first memory enable signal for simultaneously enabling a memory of an odd channel and a first memory enable signal for enabling a memory of an even channel simultaneously. And recording the output of the memory of the channel into a predetermined audio sector by the N / 2 heads. ※ Note: The disclosure is based on the initial application.