KR960038937A - Reservation recording control device of video cassette tape recorder and its control method - Google Patents

Abstract

The present invention relates to a reservation recording control apparatus for a video cassette tape recorder and a control method thereof. When a user reserves a predetermined program, the user rewinds to the initial state of the video tape, and then fast-forwards a forward direction again. Stops at a position where no signal section is detected for a predetermined time or more, and forcibly records a bis mark at the position, resumes fast forwarding to the last recordable area of the video tape, and at the end of the fast forwarding operation. The total recording time of the videotape is calculated on the basis of the number of motor revolutions up to that time, and the rewinding is performed to the position where the Bismark is recorded to calculate the remaining recordable time, and the calculated recordable remaining time is reserved. If it is shorter than the recording time, it automatically switches to the LP mode and waits for the scheduled recording. And if the reserved recording time is larger than the remaining recordable time in the LP mode switched above, the recording mode is automatically switched from the LP mode to the EP mode to reserve recording. Calculate the recordable remaining time of the video tape inserted into the video deck and compare the calculated recordable remaining time with the reserved recording time, and if the recordable remaining time is short, it is automatically switched to SP mode or EP mode and reserved. Since the recording standby operation is performed, a plurality of programs can be automatically recorded for a long time within a limited video tape.

Description

Reservation recording control device of video cassette tape recorder and its control method

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

1 is a block diagram of a reservation recording control apparatus for a video cassette tape recorder according to the present invention, and FIG. 2 is a flowchart for explaining a reservation recording control method for a video cassette tape recorder according to the present invention.

Claims (3)

It is equipped with an SP mode in which video tape playback / recording operation is performed for a predetermined recordable time, an LP mode for extending / playing the SP mode, and an EP mode for extending / playing / recording the LP mode. A video cassette recorder in which a reserved mode of videotape is performed by a selected mode as a mode is selected, comprising: key input means (10) for inputting a predetermined operation command signal according to a user's desire; A no-signal detection section 12 for detecting a section in which video and / or audio signals are not recorded on the video tape; Bismark recording means 14 for forcibly recording any Vis mark on the video tape; A motor rotation speed detection unit 16 for detecting the rotation speed of the motor for driving the video tape; A vis mark detection unit (18) for detecting a vis mark recorded by the vis mark recording means (14); A tape driving unit 20 which performs a winding operation according to recording / reproducing of the video tape; A microcomputer 24 for controlling the overall operation of the video cassette recorder in accordance with an operation command signal from the key input means 10; And a mode switching unit (22) for switching the standby recording standby state in the SP mode to the LP mode or the EP mode under the control of the microcomputer (24). According to claim 1, wherein the microcomputer 24 calculates the recordable remaining time of the video tape inserted into the video deck at the time of the scheduled recording and compared with the scheduled recording time amount of the recording time is the recording time amount If it is shorter than before, switch to the LP mode automatically, and then, in the LP mode, the remaining recordable time in the LP mode is compared with the reserved recording time, and the remaining recordable time in the LP mode is shorter than the reserved recording time. And automatically switch to the EP mode, and then perform a reservation recording standby operation at a position by the bismark recording means. The user is provided with an SP mode in which video tape playback / recording operation is performed for a predetermined recordable time, an LP mode for extending the SP mode for playback / recording, and an EP mode for extending the LP mode for playback / recording. In a method of controlling a video cassette recorder in which a scheduled recording operation of a video tape is performed in a selected mode as an arbitrary mode is selected, when a user reserves a predetermined program, rewinds the initial state of the video tape. Afterwards, fast forward again, pause at the position where the radio call section is detected for more than a predetermined time, and forcibly record the bismark at that position, then resume fast forward to the last recordable area of the video tape. On the basis of the motor rotational speed up to the moment when the fast forwarding operation ends. Calculate the total recording time of DIO-Tape, and rewind to the position where the Bismark is recorded to calculate the recordable remaining time, and if the calculated recordable remaining time is shorter than the reserved recording time, When the reserved recording time is greater than the remaining recordable time in the LP mode, the switch is automatically switched from the LP mode to the EP mode to reserve recording standby. A reservation recording control method for a video cassette tape recorder characterized by the above-mentioned. ※ Note: This is to be disclosed by the original application.