KR940008147Y1 - Tuner power auto-control device - Google Patents

Abstract

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Description

Tuner Power Automatic Control

1 is a schematic diagram showing a schematic configuration of a conventional tuner power automatic adjustment device.

2 is a schematic diagram showing a schematic configuration of a tuner power automatic adjustment device according to the present invention.

3 is a flowchart illustrating a tuner power automatic adjustment device according to FIG. 2;

* Explanation of symbols for main parts of the drawings

10: control means 20: power supply means

30: switching means 40: tuner unit

The present invention relates to a tuner power supply automatic adjustment device. In particular, by selecting a standby by VCR, only the tuner power is automatically adjusted during recording preparation to reduce the power consumption of the VCR set, and to control dual power using the control means. The present invention relates to a tuner power supply automatic control device.

In general, in the VCR system, when the TV station transmits a reservation program, if a timer standby mode is selected when a VPS signal is included in the reservation program, the VPS label check is performed. If only the tuner power required for the actual VPS label check is conducted during the period of checking the VPS label, the entire power supply of the VCR set is turned on.

1 is a diagram showing a schematic configuration of a tuner power automatic adjustment device according to the prior art. When the power control signal is transmitted to the power supply means 20 by executing the program of the control means 10 in the same figure, the power supply means 10 outputs commercial power (+ 5V) (+ 12V). At this time, the commercial power (+ 5V) (+ 12V) output from the power supply means 10 is constantly applied to the tuner 30 and the other means 40 constituting the VCR. However, even when the VPS label check is not necessary, the tuner unit 30 always takes a commercial power supply, thereby causing a temperature increase and power consumption.

Accordingly, an object of the present invention is to provide a tuner power supply automatic control device that reduces the temperature rise and power consumption of the entire VCR system by shorting the tuner power when the VPS label check is not necessary.

The present invention to achieve the above object, the control means for adjusting the first and second power control signal by executing a program embedded in the memory element; Power supply means for inputting a first power control signal of said control means to output a predetermined power input; Switching power supply voltage outputted from the power supply means by inputting a second power supply control signal of the control means; Characterized in that the tuner unit for checking the VPS label by inputting the power supply voltage switched in the switching means.

Hereinafter, the configuration and effects of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 shows a schematic configuration of a tuner power automatic adjustment device according to the present invention.

In FIG. 2, when the control means 10 selects a normal move and executes a program, the first and second power supply control signals are output at the "high" and "low" levels at A1 and A2, respectively. The first high power control signal of the " high " level is transmitted directly to B3 of the power supply means 20 to drive the power supply means 20 to induce a power supply voltage. The power supply voltages output from B1 and B2 of the power supply means 20 are transmitted to the switching means 30 and other means D1 and D2, respectively. At this time, the power supply voltages transmitted to D1 and D2 are inputted to the entire VCR circuit except for the tuner unit 40 to maintain the normal VCR function irrelevant to the VPS label check. On the other hand, when the power supply voltages output from B1 and B2 of the power supply means 20 are input to the switching means 30, the transistor Q1 is controlled by the second power supply control signal of "low" level output from A2 of the control means 10. Q2 is " turned off ". Therefore, the power supply voltage of the power supply means 20 is applied to the tuner unit 40 to check the VPS label. In addition, in order to apply the power supply voltage of the power supply means 20 of the power supply means 20 only to D1 and D2, the power supply means 20 and the switching means set the first and second power control signals of the control means 10 to a "high" level. Transfer to 30.

When the "high" level signal is transmitted to the switching means 30 and the transistors Q1 and Q2 are "turned on", the power supply voltage of the power supply means 20 is not applied to the tuner portion 40 to check the VPS label. can not do. FIG. 3 shows a flowchart of the automatic tuner power supply adjusting apparatus according to FIG. 2, which determines whether the power of the VCR system is in the "normal" state or whether the power for the reserved recording standby is in the "off" state ( If the normal mode is actually implemented, the power supply of the entire VCR set must be turned "on", so that the mode signal for turning on the power of the tuner unit 40 and the distance means D1 and D2 is selected by the control means 10. (2). In step 1, if the normal mode is not a scheduled recording standby mode or the entire VCR system is in a power "off" state, the process proceeds to step (3) of determining a standby mode and a power "off" state. In the standby mode of step 3, since there are two modes of label checking period and actual recording period, the process proceeds to step (4). On the other hand, if the standby mode is not selected in step 3, since the power of the VCR is "off", the first and second power control signals of the control means 10 are "low", so that the power of the VCR set is "off". Transmitted in a "high" state (5). If it is determined in the step 4 as the label check period, the process transitions and transmits the second power control signal of the control means 10 to the switching means 30 in the "low" state.

As described above, the present invention has the advantage of reducing the temperature rise and power consumption of the VCR set by automatically adjusting the tuner power supply in the standby mode in preparation for recording with the VCR.

Claims (1)

Control means for adjusting the first and second power supply control signals by executing a program embedded in the memory device; Power supply means for inputting a first power control signal of said control means to output a predetermined power supply voltage; Switching means for inputting a second power control signal of the control means to switch the power supply voltage output from the power supply means; And a tuner unit configured to check the VPS label by inputting the power supply voltage switched by the switching means.