KR19990034118U - Power supply control device by receiving sensitivity of set-top box - Google Patents

Abstract

The present invention relates to a power supply control device based on the reception sensitivity of the set-top box, and in particular, by measuring the reception sensitivity of the satellite broadcast, if the satellite broadcast reception is determined to be poor, turn off the power of the set-top box and periodically power the antenna. When the reception condition is judged to be normal by automatically measuring the reception sensitivity of the antenna by supplying the power supply, the set-top box is automatically powered to receive satellite broadcasts. It relates to a power supply control device by the receiving sensitivity of the box.

Description

Power supply control device by receiving sensitivity of set-top box

The present invention relates to a satellite broadcasting receiving system, and in particular, when the antenna reception sensitivity of the satellite broadcasting reception set-top box is determined to be poor, the power of the set-top box is automatically turned off and the reception sensitivity of the antenna is periodically set. The present invention relates to a power supply control device based on a reception sensitivity of a set-top box that automatically measures the power supply to receive satellite broadcasting when it is determined to be normal.

In general, a digital satellite broadcasting system is a system that delivers a broadcast signal to each terminal using a satellite, and a digital satellite broadcasting receiver receives the signal with a small home antenna, receives the amplified signal, decodes it, and then views it on a subscriber's TV. It is a device that converts a signal.

1 is a block diagram of a typical satellite broadcasting set-top box.

As shown therein, a key input unit 1 for receiving a key from the outside to operate the set-top box for receiving satellite broadcasts; An antenna receiver 2 for receiving satellite broadcasts propagated from the satellites; A central processing unit (3) for controlling the operation of the entire set-top box to perform an operation corresponding to the key transmitted from the key input unit (1); A liquid crystal display (4) for displaying channel information of an operation state and a current state of the set-top box; A ROM 6 for storing a program programmed to operate the set-top box; A RAM (5) for storing temporary data generated during processing of a program stored in the ROM (6); It is composed of a video / audio output unit 7 which processes the satellite broadcast received by the antenna receiver 2 under the control of the central processing unit 3 and outputs the video signal and the audio signal, respectively.

In the general satellite broadcasting set-top box configured as described above, a method for displaying a reception failure state according to reception sensitivity measurement may include: a reception sensitivity measurement step (ST1) of measuring reception sensitivity of an antenna; As a result of the measurement, if the measured value is smaller than the reference value set to determine that the reception state is normal, a poor reception display step (ST2-ST3) is displayed to display a message indicating that the satellite broadcast reception is poor.

The general satellite broadcast receiving set-top box configured as described above measures the reception sensitivity of the antenna receiver 2 when the antenna receiver 2 receives the broadcast signal from the satellite (ST1). Thus, the measured value is compared with the reference value set to determine that the reception state is normal. If the measured value is large, the reception state is determined to be normal, and the broadcast signal is converted under the control of the CPU 3 to display the signal in a display device such as a TV. Output so that it can be displayed.

However, if the measured value is smaller than the reference value set to determine that the reception state is normal, it is determined that the reception state is bad and displays a message indicating the satellite broadcast reception failure (ST2-ST3). After that, the user waits for a key input. Thus, the monitor of the TV does not output normal satellite broadcasting, and at the same time, the set-top box cannot perform normal signal processing. However, the set-top box continues to be powered and consumed.

Therefore, the conventional set-top box has a disadvantage in that power consumption is continuously maintained even when the satellite broadcast reception is poor due to poor reception sensitivity of the antenna, even when normal signal processing cannot be performed.

An object of the present invention is to solve the above-described problems, in particular, by measuring the antenna reception sensitivity of the satellite broadcasting reception set-top box is determined to be poor, the power of the set-top box automatically off (off), It provides a power supply control device based on the reception sensitivity of the set-top box that can reduce the power consumption by measuring the reception sensitivity of the antenna on a periodic basis and automatically turning on the power to receive satellite broadcasting when it is determined to be normal. There is.

The present invention to achieve the above object,

An antenna receiver for measuring antenna reception sensitivity to determine a satellite broadcast reception state; If it is determined that the satellite broadcast reception state of the antenna is abnormal by comparing the antenna reception sensitivity measurement measured by the antenna receiver with a reference value set for the satellite broadcast reception normal state determination, the antenna adjustment mode is not selected through the key input unit. The control unit displays the reception failure message display and the power-off of the set-top box, and periodically checks whether the satellite broadcast reception is normal by using the antenna reception sensitivity measurement value. Wow; A key input unit configured to receive an antenna adjustment mode to adjust the reception sensitivity to a normal state when displaying an antenna reception deterioration message; A memory for storing a reference value set in the central processing unit to determine that the satellite broadcast reception state of the antenna is normal; The technical configuration is characterized in that the video / audio output unit for displaying an antenna poor reception sensitivity message under the control of the central processing unit.

The present invention "power supply control device based on the reception sensitivity of the set-top box", in particular, by measuring the antenna reception sensitivity of the set-top box receiving the satellite broadcast is determined to be poor, by automatically turning off the power of the set-top box unnecessary power It is effective to reduce power consumption by preventing consumption.

1 is a block diagram of a typical satellite broadcasting set-top box;

2 is a flowchart illustrating a method for displaying a poor reception state according to a reception sensitivity measurement of a conventional set top box;

3 is a block diagram of a power supply control device based on reception sensitivity of a set-top box according to the present invention;

4 is a flowchart illustrating a power supply control method based on reception sensitivity of the set-top box of FIG. 3.

<Explanation of symbols for the main parts of the drawings>

11: antenna receiver 12: key input

13: central processing unit 14: memory

15: Video / audio output section

Hereinafter, the configuration and operation of an embodiment according to the technical idea of the present invention "power supply control device based on reception sensitivity of a set-top box" will be described in detail with reference to the accompanying drawings.

<Example>

First, the embodiment of the power supply control apparatus according to the reception sensitivity of the set-top box according to the present invention is as shown in Figure 3, the antenna receiver 11 for measuring the antenna reception sensitivity to determine the satellite broadcast reception state and ; When the antenna reception sensitivity of the antenna is determined to be abnormal by comparing the antenna reception sensitivity measurement value measured by the antenna receiver 11 with a reference value set for the satellite broadcast reception normal state determination, the antenna adjustment mode is performed through the key input unit 12. Is not selected to control the display of bad reception message and power-off of the set-top box, and if it is determined that it is normal by periodically checking whether the satellite broadcast reception is normal with the antenna reception sensitivity measurement value, A central processing unit (13) for turning on; A key input unit 12 which receives an antenna adjustment mode to adjust the reception sensitivity to a normal state when displaying an antenna reception sensitivity poor message; A memory (14) for storing a reference value set by the central processing unit (13) to determine that the satellite broadcast reception state of the antenna is normal; A video / audio output unit 15 for displaying an antenna poor reception sensitivity message under the control of the central processing unit 13.

The operation of the power supply control device according to the reception sensitivity of the set-top box according to the present invention configured as described above will be described with reference to FIG. 4 as follows.

First, the antenna receiver 11 in the set-top box receives a broadcast signal from a satellite and measures antenna reception sensitivity (ST11). Then, the CPU 13 compares the antenna reception sensitivity measurement value measured by the antenna receiver 11 with a reference value set for the normal reception sensitivity determination (ST12). As a result of the comparison, when the antenna reception sensitivity measurement value is larger than the reference value, it is determined that the satellite broadcasting reception state of the set-top box is normal, and the received broadcast signal is processed and output as a video signal and an audio signal.

Meanwhile, as a result of comparing the measured value with the reference value, the CPU 13 determines that the satellite broadcasting reception state of the set-top box is poor when the measured value is smaller than the reference value (ST13). Thereafter, when the antenna adjustment mode is selected through the key input unit 12 from the outside, the CPU 13 confirms the antenna adjustment mode selection and displays a message indicating that the antenna adjustment mode selection has been selected. Thus, the user adjusts the antenna to increase the reception sensitivity of the antenna to make the satellite broadcasting reception state normal (ST14-ST15).

However, the CPU 13 detects whether there is a key input from the user if it is not selected as a result of checking whether the antenna adjustment mode is selected. At this time, if there is no key input for the set 10 minutes, the power is turned off to prevent unnecessary power consumption of the set top box in which normal signal processing is not performed (ST16-ST17).

In this way, the central processing unit 13, when the reception sensitivity of the antenna is so weak that the satellite broadcast reception state is poor, the power is turned off, and checks whether the elapsed 5 minutes, the period set for the measurement of the reception sensitivity of the antenna (ST18). Thus, when 5 minutes have elapsed, power is supplied to the antenna again to re-measure the reception sensitivity of the antenna (ST19). At this time, the voltage of 12V is supplied to the antenna. Since the power is turned off when the adjustment mode of the antenna is not selected, it is determined that the power of the set-top box is not turned off by the user's operation, and the power is supplied again.

The CPU 13 increases the number of measurements once and compares whether the current number of measurements is less than seven times the set number of re-measurements (wherein the antenna reception sensitivity re-measurement is performed 7 times or less). If it is (ST20-ST21), the measured value is compared with the reference value set to determine that the reception state is normal (ST22).

As a result of the comparison, if the measured value is smaller than the reference value, it is determined that the broadcast reception state is poor and the power supply is stopped. After 5 minutes have elapsed, power is supplied to the antenna again to re-measure the reception sensitivity of the antenna (ST17-ST19).

If the number of times of measurement is increased and the current number of times is less than 7 times the set number of remeasurements, the number is smaller (ST20-ST21), and the measured value and the reference value are compared. As a result, when the reception sensitivity measurement value is larger than the reference value, it is determined that the broadcast reception state is normal and the satellite broadcasting is received by controlling power to be supplied to the set top box (ST23).

In this operation, if the set-top box measures the reception sensitivity of the antenna and determines that the reception state is poor, the set-top box stops power supply to prevent unnecessary power consumption.

As described above, the present invention "power supply control device based on the reception sensitivity of the set-top box", the antenna reception sensitivity of the satellite broadcasting reception set-top box is determined to be bad, and automatically turns off the power of the set-top box ( This will reduce the power consumption by preventing unnecessary power consumption.

If the antenna reception sensitivity is determined to be poor and the power is turned off, the antenna reception sensitivity is re-measured at regular intervals to determine that the satellite broadcasting reception condition is normal. Then, the set top box is automatically turned on to receive the satellite broadcasting. Therefore, the reception sensitivity of the antenna can be automatically adjusted to adjust the reception operation of the set-top box.

Claims (1)

An antenna receiver 11 for measuring antenna reception sensitivity to determine a satellite broadcast reception state; When the antenna reception sensitivity of the antenna is determined to be abnormal by comparing the antenna reception sensitivity measurement value measured by the antenna receiver 11 with a reference value set for the satellite broadcast reception normal state determination, the antenna adjustment mode is performed through the key input unit 12. Is not selected to control the display of bad reception message and power-off of the set-top box, and if it is determined that it is normal by periodically checking whether the satellite broadcast reception is normal with the antenna reception sensitivity measurement value, A central processing unit (13) for turning on; A key input unit 12 which receives an antenna adjustment mode to adjust the reception sensitivity to a normal state when displaying an antenna reception sensitivity poor message; A memory (14) for storing a reference value set by the central processing unit (13) to determine that the satellite broadcast reception state of the antenna is normal; Power supply control device according to the reception sensitivity of the set-top box, characterized in that consisting of a video / audio output unit for displaying the antenna reception sensitivity failure message under the control of the central processing unit (13).