KR19990026335A - How to display the remaining tape on VSI playback - Google Patents

Abstract

The present invention relates to a method for displaying the remaining amount of video tape in the playback mode of VSI. In the case of the VSI without the digitron on the front side of the VSI set, the video is played only through the OSD screen. Since it is possible to display the remaining amount of tape, it was necessary to find a more convenient display method. To this end, the present invention is to determine whether or not the play key is input as the VSI is powered on, and if the play key is input in the step, the step of lighting all of the mode display LED at the time of initial driving of the tape loaded in the deck And, if the play key is not input, turning on the mode display LED selected by the user, and subsequently calculating and storing the current remaining amount of the tape using the tape traveling speed data of the reel sensor unit; Sequentially turning off the mode display LEDs in proportion to the remaining amount of tape calculated in step S, continuing to determine whether there is currently a remaining amount of tape; Judging whether the playback key has been turned off by the user. It characterized in that if comprises the step of ending the play mode only.

Description

How to display the remaining tape on VSI playback

The present invention relates to a method for displaying the remaining amount of a video tape in a playback mode of a Bsial. In particular, the remaining amount of the remaining tapes during a playback of a video tape is a sequential order of the mode display LEDs provided on the front side of the Bsial set. It is displayed through on / off so that users can easily check the remaining amount of video tape even when playing VSI in the dark.

In a conventional VSI, a reproduction / control unit for controlling a playback operation through control by a user's remote controller, a set key, or the like, as shown in FIG. ), And a video / audio signal played back from the playback / recorder, demodulated and transmitted to an output terminal, and at the same time, a control pulse and a DC envelope signal for a video signal played back from the tape are output to the controller. The voice signal processing section 2, the command input section 6 for interfacing with the user, and the key input signals selected by the user control each part of the device such as power on / off operation and deck operation related to recording / reproducing. The microcomputer 7 which detects the operation state of each part of the deck by checking a sensor input part, and is controlled by the control of the microcomputer 7 OSD processing section 3 for generating text and outputting a text screen for an On Screen Display (hereinafter referred to as OSD), a deck section 4 controlled by the control section, and an operating state of the deck section. The sensor input unit 5 and the like are provided for reading and transmitting an arbitrary detection signal according to each state to the control unit.

In the case of the VSI of this configuration, when the tape regeneration mode is set from the command input unit 6 by the user's key operation after the power is supplied, the microcomputer 7 performs the operation of the reproducing / recording unit 1 and the deck unit 4. By controlling the playback mode, a desired playback signal obtained from the video and audio heads is output to the video / audio signal processor 2 to control each part of the device so that video and audio signals can be obtained from the video and audio output terminals.

At this time, the circuit configuration of the video / audio signal flow used in the playback signal processing in the VSI to amplify the playback signal obtained from the video head 11 to a predetermined level through the preamplifier 12, as shown in FIG. Group delay that detects the envelope of the video signal through the DC envelope detection circuit 24, converts and outputs the DC voltage for automatic tracking of the microcomputer 70, and compensates the group delay time for the pre-amplified video signal. A compensating circuit 21, a 4-5 MHz base band peaking circuit 22 for amplifying the output of the group delay compensating circuit to an appropriate magnitude and performing high pass compensation to match the characteristics and magnitude of an image reproduction signal; and the base band peaking circuit. The output stage buffer circuit 23 buffers the output of the next demodulation circuit.

Referring to the operation of the conventional reproduction circuit, the image signal in the frequency modulation state detected by the image head 11 is amplified by 60 [dB] in the preamplifier 12, and then the envelope is passed through the DC envelope detection circuit 24. The image signal is detected and supplied to the microcomputer 7 so as to be used as a DC voltage for automatic tracking, and at the same time, the image signal amplified by 60 [dB] in the preamplifier 12 is supplied to the group delay compensation circuit 21. In this case, the group delay time is compensated by the group delay compensation circuit 21, and the video signal in the FM state is amplified to a predetermined size while being passed through the baseband peaking circuit 22. The output buffer circuit 23 is supplied to the output buffer circuit 23 in accordance with the desired characteristics and the appropriate size, and thus the output buffer circuit 23 is supplied to the demodulation circuit.

Meanwhile, in the conventional VSI, a digitron or OSD screen provided on the front side of the VSI set is used to display the remaining amount of the tape remaining to the user during video tape playback as described above.

However, in the case of the VSI that does not have a digitron on the front side of the VSI set, the remaining amount of the video tape in the playback mode can be displayed only through the OSD screen, so a more convenient display method was required. .

Therefore, the present invention was created to solve the above problems, by displaying the remaining amount of the tape remaining during the playback of the video tape through the sequential dot / light off of the mode display LED provided on the front PCB side of the VSI set It is an object of the present invention to provide a method for displaying the remaining tape amount when playing a VSI in a dark place, so that the user can easily grasp the remaining amount of the video tape even when playing in the dark.

In order to achieve the above object, the present invention provides a method of determining whether a play key is input by a user as VSI is powered on, and when the play key is input at the step, the initial driving of the tape loaded in the deck, respectively. Lighting all mode display LEDs; if no playback key is input; lighting mode display LEDs selected by the user; and using the tape speed data of the reel sensor unit to calculate the current amount of remaining tape. And then memorizing, sequentially turning off the mode display LED in proportion to the remaining amount of tape calculated in the above step, determining whether there is a present remaining amount of tape, and remaining amount of tape in the step If it is determined that the playback key is off, determining whether or not the playback key is turned off; When it is determined that the off by the user and that comprising the step of ending the reproduction mode is characterized.

1 is a block diagram schematically showing some components of a typical VSI;

FIG. 2 is a circuit diagram of a reproduction signal processing part of VSI according to FIG. 1;

3 is a reference diagram showing each mode display LED used in the present invention;

4 is a configuration block diagram of hardware for implementing the present invention;

5 is a flowchart illustrating a method of displaying a remaining tape amount according to the present invention.

* Explanation of symbols for main parts of the drawings

30: key input unit 31: reel sensor unit

32: microcomputer 33: LED driver

Hereinafter, a method of displaying the remaining amount of tape at the time of reproducing VSI according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 shows the mode LED is provided on each of the front PCB side of the BC-real set according to the present invention.

That is, one side of the front PCB includes a Power LED, a Play LED, a Record LED, a T-Record LED, a Hi-Fi LED, a TV / VCR LED, and the like. It is.

4 is a block diagram of hardware for implementing the method of displaying the remaining tape amount according to the present invention at the time of regeneration of BC.

That is, the input terminal of the microcomputer 32 is connected to the key input unit 30 having various function keys and the reel sensor unit 31 for detecting the traveling speed when the video tape is traveling, and the output terminal is connected to the power LED and reproduction. The LED driver 33 for lighting the Play LED, the Record LED, the T-Record LED, the Hi-Fi LED, and the TV / VCR LED is connected.

Fig. 5 is a flowchart showing a method for displaying the remaining tape amount according to the present invention during the reproduction of VSI.

In other words, the flow chart includes the step of determining whether the playback key is input by the user as the VSI is powered on (step 100), and if the playback key is input in the step, Lighting all the mode display LEDs at the time of initial driving (step 120); lighting the mode display LED selected by the user if the playback key is not input (step 130); Calculating the remaining amount of the current tape using speed data and storing it (step 140); sequentially turning off the mode display LED in proportion to the current remaining amount of the tape calculated in the step (step 150); Subsequently, it is determined whether or not the remaining tape is present (step 160), and if it is determined that there is no remaining tape in the step, it is determined whether or not the playback key is turned off. A step is made (step 170) and a step (step 180) is terminated if the playback key is turned off by the user in this step.

Referring to the present invention in more detail as follows.

First, when the user powers on VSI (step 100), the microcomputer 32 of VSIal first determines whether or not a playback key is input by the user (step 110).

In addition, when it is determined that the playback key is input in the above-described step, the microcomputer 32 starts the power LED, the playback LED, the recording LED, the reservation recording LED, the hi-fi LED, the TV / VCR LED, etc. The control signal is sent to the LED driver 33 so that all of the lights are turned on (step 120).

However, if it is determined that the play key is not input at this time, since the user has selected other function keys except the play key, the control signal is sent to the LED driver 33 so that the mode display LED selected by the user is turned on (step). 130).

Meanwhile, as the tape loaded on the VSI Deck is reproduced, the microcomputer 32 calculates the remaining amount of the current tape using the tape traveling speed data received from the reel sensor unit 31 and stores the remaining amount of tape in YPIROM (step). 150).

In addition, when the remaining amount of the tape, that is, more accurately, the remaining tape length is calculated in the above step, the microcomputer 32 turns off the mode display LEDs sequentially in proportion to the calculated remaining amount of the tape (step 150). ).

That is, each of the mode display LEDs shown in FIG. 2 is turned on at the beginning of the playback, and as the playback proceeds, the Power LED, the Play LED, the Record LED, and the reserved recording (T- Record LED, Hi-Fi LED, TV / VCR LED will turn off in that order.

At this time, the remaining tape display shows that all LEDs are turned on at the beginning of playback and then each LED is turned off sequentially. On the contrary, all the LEDs are turned off at the beginning of playback and then turned on sequentially. You can also indicate the process.

Further, in the playback mode, it is determined whether there is currently a remaining tape in the play mode (step 160). If it is determined that there is no remaining tape in the step, it is determined whether or not the play key is turned off (step 170), and the remaining amount remains. If it is determined, the process returns to step 140 again.

If it is determined in the step that the playback key is off, the playback mode is terminated (step 180).

According to the method of displaying the remaining tape amount during the playback of VSI according to the present invention as described above, the sequential point of the mode display LED provided on the front PCB side of the VSI set shows the remaining amount of the tape remaining during the tape playback in the playback mode of VSI. It is useful to allow the user to easily check the remaining amount of video tape even when playing VSI in the dark.

Claims (1)

As VSI is powered on (step 100), a step (step 110) of judging whether or not a playback key is input by the user, and each mode at the time of initial driving of the tape loaded in the deck if the playback key is input at the step Lighting all the display LEDs (step 120); if no playback key is input; lighting the mode display LEDs selected by the user (step 130); and using the tape running speed data of the reel sensor unit. Calculating and storing the remaining amount of the current tape (step 140); sequentially turning off the mode display LED in proportion to the current remaining amount of the tape calculated in the step (step 150); Determining whether there is a remaining amount of tape in the step (step 160), and determining whether or not the playback key is turned off (step 170). It said step if it is determined that the play key has been turned off by the user when the V sialic performing the step (step 180) to end the reproduction mode in order to display the remaining tape play, characterized in the method.