KR19980031546A - Illumination recognition VSI power auto-off control method - Google Patents

Abstract

The present invention relates to a method of controlling the illumination power of a VSI power to enable the operation power of the VSI to be automatically turned off according to the sensing value of the ambient light sensor for sensing the ambient illumination to prevent unnecessary power consumption.

A feature of the present invention is to install an illuminance sensor for sensing the illuminance of the room on the VSI to compare the present illuminance value detected by the illuminance sensor to the reference illuminance value programmed in the microcomputer and also to maintain the continuity of the present illuminance value. By comparing the timing count value, which is started at the time of detecting the change in illuminance, to the reference time, if the illuminance of the room is less than the reference value and the value exceeds the preset time, the microcomputer determines The present invention relates to a roughness recognition VSI power auto-off control method for providing a control signal for powering off the VSI power supply unit.

Description

Illumination recognition VSI power auto-off control method

The present invention relates to a method of controlling the illumination power of the VSI power to allow the operating power of the VSI to be automatically turned off in accordance with the sensing value of the ambient light sensor for detecting the ambient illumination down to prevent unnecessary power consumption.

Since VSIal has its own tuner in addition to video tape playback, it can record other broadcasting channels while watching TV channels through a TV connected to RF or A / V. In addition, since the timer is provided inside VSI, it is also possible to make a reservation for missed appointments.

However, in order to watch and play video tapes using VSI or to watch TV programs using the built-in tuner in VSI, it is necessary to connect a TV or monitor to VSI. If the user stops watching while watching the video, the user often unknowingly simply turns off the power of the television without the power of VSIAL.

In this case, the user is not interested in whether or not the VSI is powered on, and thus, unnecessary power waste occurs in VSI.

In order to solve this problem, the present inventors previously attempted to prevent unnecessary power consumption by turning off the VSI's power supply automatically when it is not used for a certain period of time without the standby recording function. This has been proposed.

Referring to the contents of the prior art, in order to prevent the power on state of VSI from lasting for an unnecessarily long time, the first step is to determine whether the cassette is out, and the playback mode or recording which is the current mode other than the cassette out at the above step. If one of the mode or the reserved recording standby mode is performed and the cassette is out, the TV mode is maintained for a first set time, and after the first set time defined in the step, the current VSI mode is a video mode. In the step of determining whether the video mode or the TV mode, in the step of powering off as it is in the TV mode after the step, and in the video mode after waiting for a second set time and determining whether the video mode again, in the above determination step In video mode, turn off the power and exit. In TV mode, go back to previous step. It can be seen that it consists of the step of determining whether or not tout.

However, the VSI power control method is a technology that is applied only when there is a user's intention to power off a VSI or a monitor or a TV connected thereto, and a special power off intention by the user is applied to the VSI or the TV side. If it is not applied by physical force, the desired unnecessary power save effect cannot be obtained.

Therefore, artificial intelligent power-off control technology that does not require any manipulation for performing the direct power-off control function by VSI viewers is urgently required.

An object of the present invention is to enable the operating power of the VSI to automatically turn off in accordance with the power supply control command of the microcomputer based on the sensing value of the ambient light sensor for detecting the ambient illumination, the illumination recognition VSI to prevent unnecessary power consumption The present invention provides a method for automatically controlling power off.

A feature of the present invention is to install an illuminance sensor for sensing the illuminance of the room on the VSI to compare the present illuminance value detected by the illuminance sensor to the reference illuminance value programmed in the microcomputer and also to maintain the continuity of the present illuminance value. By comparing the timing count value, which is started at the time of detecting the change in illuminance, to the reference time, if the illuminance of the room is less than the reference value and the value exceeds the preset time, the microcomputer determines A control method for providing a control signal for powering off the V-Sial power supply unit to automatically turn off the power of the V-Sial according to the illumination of the room.

1 is an internal circuit diagram of a VSI system for implementing the present invention.

2 is a flowchart illustrating a control method of the present invention.

* Description of the symbols for the main parts of the drawings *

10: Micom 11: Tuner

12 synchronous detector 13 illuminance sensor

14: key input section 15: power supply

16: timer

Hereinafter, the present invention will be described with reference to the accompanying drawings.

1 is a hardware configuration diagram of an essential part of a VSI for executing VSI power saving control according to the present invention.

As referred to herein, the VSI system detects a tuner 11 for tuning a general TV broadcast signal received through an antenna and a synchronization signal included in an air broadcast reception signal tuned by the tuner 11. The synchronous detector 12 for transmitting to the microcomputer 10, the cassette sensor for determining the presence or absence of a tape in the deck, and transmitting it to the microcomputer, and the first set time and the second set time in the cassette out state. A timer 16 for counting to provide to the microcomputer, a power supply 15 for supplying an operating voltage to the VSI, and an illuminance of the room where the key input unit 14 and the VSI are installed are transmitted to the microcomputer. The illuminance sensor 13 is included.

As a specific application example of the illuminance sensor 13, a photo transistor or Cds may be used.

The circuit for converting the indoor illuminance into an electrical signal using these illuminance sensors may be composed of a circuit for amplifying differentially through a resistor reference voltage setting circuit and a resistor voltage divider circuit which are well known in the art.

On the other hand, the microcomputer 10 registers an arbitrary value, which is a reference for comparison with the input illuminance detection value, as a reference illuminance setting value in advance in the internal memory.

In addition, in the memory of the microcomputer, a reference time value that can be registered and changed to an arbitrary value by a manufacturer or a user is set and registered in advance.

In the case of playing a videotape using VSI having such a hardware configuration, when the VSIal power switch is first turned on, the power switch on signal is applied to the microcomputer 10 through the key input unit 14, and thus the microcom is The power supply 15 is operated so that the main power is supplied to the VSI.

In addition, VSI is basically designed to input the main power by the power supply 15 to all VSI circuits by the switch operation signal of the cassette sensor (not shown) when the tape is inserted into the deck. Even if you don't turn it on, you can turn VSI power on just by inserting the tape into the cassette deck.

Then, when the play (playback) key input by the user is input to the microcomputer 10 through the key input unit 14, the microcomputer sends a playback control signal to the deck to execute a tape playback operation so that the video and audio signals obtained therefrom The output signal is output to a TV or monitor connected to the VSI via a reproduction signal processing circuit.

On the contrary, if there is a key input for selecting the tuner 11 from the key input unit 14, the microcomputer 10 tunes the tuner 11 electronically so that the broadcast signal selected here is output to the TV or monitor through the signal processing circuit. .

The implementation process of the present invention which prevents unnecessary power supply to VSI in the VSI system operating as described above will be described in detail with reference to FIG. 2 as follows.

First of all, since the operation of the present invention should be executed only under the condition that power is supplied to the VSI, the automatic power-off control according to the method of the present invention is executed when the VSI is on.

When watching a video tape or a television program using VSI, when the user presses the auto-off function selection button provided on the front panel or remote control of VSI, the system control micom 10 of VSI is an illumination sensor The VSI power is selectively turned off automatically by executing the program as shown in FIG. 2 by accepting the data value corresponding to the room illumination from (13).

In general, at night, the indoor lighting is turned off or turned off to watch a video or television program using VSI, and many VSI viewers go to bed before reaching the end of the tape.

Therefore, VSI is placed in a condition that will be operated unnecessarily for a long time, which causes power consumption as well as failure of VSI device, which can be solved by running the illuminance recognition program as mentioned above.

That is, when the illuminance sensing function key input from the outside is input to the microcomputer 10, the microcomputer is installed on the front part or upper portion of the VSI to sense the current illuminance value from the illuminance sensor 13 which senses indoor illuminance. Reads and compares it to a reference illuminance value previously programmed and registered in the internal memory.

At this stage, if the current illuminance value does not reach the standard illuminance value, the indoor illuminance sensing data value is read again to execute continuously until the current illuminance value reaches the reference illuminance value.

In this way, if the current sensed indoor illuminance value reaches the reference illuminance value, a step of starting a count for timing is executed.

During the execution of the count, if there is no change in illuminance, it checks whether there is a change in the sensed illuminance value continuously, and then enters the execution of the next step. Redo from step

This is the case when the viewer such as VSIal lowers or turns off the indoor lighting, and then returns the indoor lighting to normal, and then does not intend to go to bed while reading or watching the video. Is to prevent the power off of VSI otherwise.

On the other hand, if there is no change in illuminance in the above step, the current timing count value is compared with a preset reference timing count value, and counting is continued under the condition of no illuminance change when the illuminance down state is less than the reference time.

In this way, when the timing count value and the reference timing value are the same, the microcomputer executes the output of the power-off control command to the power supply of VSI and the VSI supply power is turned off by this power supply.

In the execution of the present invention as described above, the reference timing time value is subdivided into 10 minutes, 20 minutes, 30 minutes, 1 hour, 2 hours, and so on, so that the user can select VSI off waiting time after the indoor illumination down according to the user menu selection. Can be.

As described above, the present invention lowers or turns off the indoor lighting while watching a video tape or watching a television program using VSI at night so that the viewer does not turn off the power of VSI unlike his will. In this case, there is a unique effect that can fundamentally solve the problem of unnecessary power consumption in VSI and the occurrence of failure due to long continuous operation of VSI.

Claims (3)

Installing an illuminance sensor for sensing the illuminance of the room on the VSI, comparing the present illuminance value detected by the illuminance sensor with a reference illuminance value set in advance on the memory in the microcomputer; If the illuminance value of is greater than or equal to the reference illuminance value, determining whether the illuminance change is performed to determine the continuity of the current illuminance value, and if there is no illuminance change at this stage, a timing count value that is started at the time of detecting the first illuminance change is determined. Comparing the reference time count value and performing the power-off of VSI by the power supply unit when the count value after illuminance conversion in the count value comparison step reaches a count value corresponding to a preset time. Illumination recognition VSI power automatic off control method comprising the step of. The method according to claim 1, wherein the illuminance sensor is Cds. The method according to claim 1, wherein the illuminance sensor is a photo transistor.