KR0144375B1 - Video tape recorder with reproducing reservation function - Google Patents

Abstract

The present invention relates to a VTR having a play time reservation function that allows play to be performed only for a desired time during play in the VTR. According to the present invention, the VTR includes a key input unit for selecting a play time reservation function at an initial play time or a current play time, a micom for controlling the overall operation of each component to perform the selected play time reservation function, and a tape under the control of a micom. Playback means having an end sensor unit for detecting the end of the tape to be played back, a timer for checking the actual playback time of the tape, a phrase asking a desired playback time, or a set playback time and playback signal. OSD unit for display, and a display unit. Therefore, the present invention is to set the desired playback time within the maximum playback time of the tape to play for that time or to stop the playback when the end of the tape is detected so that if the user automatically goes to sleep even if the user falls asleep during playback In addition, it provides the effect of watching the tape recording program by the unit of time.

Description

Video tape recorder with playback time reservation

1 is a block diagram showing a video tape recorder having a play time reservation possibility according to the present invention;

2 is a flowchart for explaining a process of performing a playback time reservation function in the video tape recorder of FIG.

* Explanation of symbols for main parts of the drawings

11: key input 12: microcomputer

13: Timer 14: Playback means

15: OSD unit 16: Display unit

141: end sensor

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to tape playback in a video tape recorder (hereinafter referred to as a VTR). More particularly, the present invention relates to a VTR having a playback time reservation function for reproducing a playback time for a desired time. It is about.

One of the various functions added to the VTR, the reservation play function, allows tape playback on the VTR to start automatically at a desired time. However, this reserved playback function maintains the playback state until the function switching is made through the user's key operation. If the user falls asleep while watching the contents of the playback, the contents of the tape remain intact even though they have been played, which wastes unnecessary power and shortens the lifespan of the device. For example, in the case of a television, a sleep function is provided to designate a predetermined time indicating how many hours the viewer will go to bed, and turn off the television automatically when the designated time is reached. As another example, in case of VTR, it is equipped with a scheduled recording function to set the recording start time and recording end time in advance, and start recording when the set recording start time is reached, and record automatically when the set recording end time is reached during recording. To exit.

Accordingly, an object of the present invention is to set a play time reservation function that can automatically end playback without any key operation after playing for only a desired time by setting a time that can be played even during playback, similarly to a reservation function when recording on a VTR. In providing the provided VTR.

In order to achieve the above object, a VTR having a playback time reservation function of the present invention is a device for tape playback of a VTR, comprising: a key input unit and a key input signal in response to selection of a playback function of the key input unit; And a timer, a key play signal according to the play time reservation function selection of the key input unit is set, and a play time set in consideration of the tape play time available from the play means is set. A microcomputer which starts the playback means only during the reserved playback time by comparing the actual playback time, playback means which is started by the microcomputer to play back the tape, and informs the microcomputer of the playable time of the tape, and is started by the microcomputer. A timer for checking a tape playback time of the playback means, and a playback signal of the playback means. And a display unit for playing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a VTR having a playback time reservation function according to the present invention. As shown, the VTR of the present invention receives a key input unit 11 of a remote control or key matrix and a key input signal according to the selection of the regeneration function and the reserving time reservation function of the key input unit 11, and thus the regeneration function and reproduction time. In order to perform the reservation function, the microcomputer 12 which controls the operation of each component is provided. The microcomputer 12 is connected with a timer 13 for checking the actual tape playback time. The microcomputer 12 is also connected to a reproducing means 14 which performs a general tape reproducing operation under the control of the microcomputer 12. The reproducing means 14 has an end sensor unit 141 which detects the end of the tape to be reproduced and informs the microcomputer 12 of the reproducing means 14. The microcomputer 12 is connected to an OSD unit 15 for generating text data (OSD) according to the play time reservation function. Between the OSD unit 15 and the reproducing means 14, the display unit 16 which expresses the reproduction signal and expresses the generated text data OSD is connected.

The operation of the VTR with the reproduction time reservation function of the present invention configured as described above will be described in more detail with reference to FIG.

2 is a flowchart illustrating a process of performing a play time reservation function in the VTR of FIG.

First, the user applies the key input signal according to the playback function selection to the microcomputer 12 through the key input unit 11. The microcomputer 12, which has received the key input signal according to the playback function selection, applies the playback control signal D-PB to the playback means 14 for playing back the tape mounted in the present VTR. The reproducing means 14, which has received the reproducing control signal D-FB, reproduces the tape, and processes the reproduced signal on the display unit 16 for signal processing. The microcomputer 12 drives the playback means 14 to play back the tape, and simultaneously activates the timer 13 to check the playback time of the tape.

On the other hand, when the user selects the playback time reservation function to play only the desired time from the initial playback time or the current playback time, the key input signal according to the playback time reservation function selection through the key input unit 11 is input to the microcomputer 12. Is applied. As shown in FIG. 2, the microcomputer 12 checks whether or not a key input signal according to the playback time reservation function selection is applied during normal play (step 201) (step 202). Keep checking the keystrokes while playing the playback function. The microcomputer 12 drives the OSD unit 15 when the key input signal corresponding to the playback time reservation function is selected from the key input unit 11 and asks for the desired playback time on the display unit 16 (for example, How Long Play?) (Step 203). Here, in addition to the display unit 16 that asks for the playback time, it may be displayed on the display panel of the VTR. The user looks at the guidance text displayed on the display unit 16 and sets a desired playback time. The playback time can be set using the number keys of the function buttons on the key input unit 11, but the number of times of the playback time reservation function selection key is set here. After selecting the playback time reservation function, the microcomputer 12 checks the input frequency N of the key input signal according to the playback time reservation function selection input from the key input unit 11 (step 204). Here, 30 minutes is set for each keystroke, and 30 minutes is a normal experience value. In the VTR, tape speed is standardized, and this is called SP (Standard Play), and the tape speed of the SP of the SP is called SLP (Super Long Play). With a 120-minute tape, up to two hours of recording and playback can be achieved for the SP and up to six o'clock for the SLP. Thus, the microcomputer 12 receives a signal from the playback means 14 as to whether the tape currently being played is SP or SLP and checks the playable time of the tape (step 205). If the tape is SP, the play time that can be reserved is up to 2 hours. The maximum number of keystrokes N can be input by the microcomputer 12 is 4, and if the tape is SLP, the play time that can be reserved is up to 6 hours. 12) The maximum number of key inputs N that can be input is 12. Thus, the microcomputer 12 ignores the excess number when the key input exceeds the maximum number of key inputs that can be input at the tape speed SP or SLP. As another example of setting the reserved playback time, a current tape remaining amount may be detected to set a time that can be played back within the limit of not exceeding the detected remaining tape amount. The microcomputer 12 sets the time calculated by multiplying the number of key inputs N by 30 minutes to the reserved reproduction time T desired by the user (step 206). In this way, the microcomputer 12 calculates the key input frequency N according to the playing time reservation function selection as the time, sets the desired playing time, and then drives the display unit 16 or the OSD unit 15 by setting the set playing time. It is displayed on the display panel so that the user can check whether the desired playback time is correctly set. After the reserved playback time is set, the microcomputer 12 compares the time at which the tape is actually played by the current playback means 14 with the reserved playback time T (step 207). The actual reproduction time is checked by the timer 13. The microcomputer 12 controls the playback means 14 to stop playback if the current tape playback time reaches the reserved playback time T as a result of the comparison (step 208), and then ends the playback time reservation function. The microcomputer 12 controls the playback operation in the playback means 14 to be performed as it is if the current tape playback time does not reach the reserved playback time as a result of the comparison (step 209). At this time, the microcomputer 12 determines whether the end of the tape is detected through the detection signal from the end sensor unit 141 embedded in the reproducing means 14 (step 210). The end sensor unit 141 is provided with a light emitting diode (LED) and a phototransistor with a tape mounted in the VTR interposed therebetween. When the transparent portion at the end of the tape passes, light from the light emitting diode (LED) reaches the phototransistor. Detect the end of the tape. If the end of the tape is detected, the microcomputer 12 controls the playback means 14 to rewind the tape and then stop the playback (step 211), and then ends the playback time reservation function.

As described above, the present invention relates to a VTR having a play time reservation function, which allows the user to play back only the desired time when playing a tape in the VTR, so that the reserved time is not continuously played even if the user falls asleep while viewing the play signal. This automatically stops playback without any additional key operation, so as not to overwhelm the VTR, and has the effect of viewing the recorded program by time unit.

Claims (8)

An apparatus for tape playback of a VTR, comprising: a key input unit; The playback means and the timer are activated by receiving a key input signal according to the playback function selection of the key input unit, and the tape play time applied from the playback means is received in consideration of the key input signal according to the playback time reservation function selection of the key input unit. A microcomputer which sets a reservation playback time and starts the playback means only during the reservation playback time by comparing the set reservation playback time with the actual playback time checked through the timer; Reproducing means, started by the microcomputer and reproducing the tape, and informing the microcomputer of the playable time of the tape; A timer, started by the microcomputer, for checking a tape playing time of the playing means; And a display unit for displaying a reproduction signal of said reproduction means. The display apparatus of claim 1, wherein the micom displays a message asking for a desired playback time on the display panel of the display unit or the VTR when a key input signal is applied from the key input unit according to selection of a playback time reservation function during playback. And a display unit (OSD) for displaying the set reproduction time on the display panel when the time is reserved. The VTR having a play time reservation function according to claim 1, wherein the play means further comprises an end sensor unit for detecting an end portion of a tape to be played. The apparatus of claim 1 or 2, wherein the microcomputer checks the number of times of input of the key input signal according to the reservation time reservation selection of the key input unit, and checks the tape playable time applied from the playback means to set the reserved play time. And a VTR having a play time reservation function. 5. The apparatus of claim 4, wherein the microcomputer calculates the number of checked key inputs as a time by setting a predetermined time per key input, and if the calculated time does not exceed the checked tape playable time, the time is used as a reserved play time. And setting the tape playable time as the reserved play time if the calculated time exceeds the checked tape playable time. 6. The VTR with a playback time reservation function as claimed in claim 5, wherein the micom recognizes the tape playable time by the remaining tape amount or the tape speed (SP or SLP) detected by the playback means. 6. The method of claim 5, wherein the microcomputer compares the set reservation playback time with the actual playback time checked by the timer, and stops the playback operation of the playback means when the reservation playback time reaches the actual playback time, and the reservation setup time is actually set. And a playback time reservation function, characterized in that if the playback time has not been reached, the playback operation of the playback means is performed as it is. 8. The reproducing according to claim 3 or 7, wherein the microcomputer controls the reproducing means to rewind the tape and stops the reproducing operation when the end of the tape is detected in the end sensor during the reproducing during the reserved reproducing time. VTR with time reservation.