KR100190960B1 - Antenna position control apparatus and method by using noise voltage - Google Patents

Abstract

The present invention relates to an antenna position adjusting apparatus and method using a noise voltage, which detects a noise voltage at a predetermined angle while rotating the antenna by a motor installed in the lower part of the antenna, and after the rotation of the antenna is terminated, By providing a antenna position adjusting device using the noise voltage and the method to adjust the direction of the antenna to the position where the minimum noise voltage is detected by detecting the minimum noise voltage in contrast with each other, by providing a broadcast signal It is possible to automatically adjust the position of the optimally received antenna.

Description

Antenna Position Adjuster Using Noise Voltage and Its Method

1 is a block diagram showing the configuration of a conventional television receiver.

2 is a block diagram showing the configuration of an antenna position adjusting apparatus using a noise voltage according to the present invention.

3 is a table showing the noise voltage detected by the rotation of the antenna and the processing status of the OSD screen.

4 is a flowchart showing the operation of the present invention for adjusting the position of the antennes according to the noise voltage.

* Explanation of symbols for main parts of the drawings

10 antenna 11 step motor

12: tuner

13: IC for IF Processing and Noise Voltage Detection

14: analog / digital converter 15: clock oscillator

16: data storage unit 17: data reading unit

18: switching IC 19: microprocessor

20: step motor drive unit 21: OSD character processing unit

The present invention relates to an antenna position adjusting apparatus and method using a noise voltage, and more particularly, by detecting a noise voltage received with a broadcast signal at a predetermined angle while rotating the antenna once, the antenna is positioned at a position where the noise voltage is detected as the lowest value. The present invention relates to an antenna position adjusting apparatus and method using a noise voltage capable of adjusting the direction.

Referring to FIG. 1, a television receiver for processing a TV signal or an external input signal includes: a tuner 101 configured to tune a channel selected as a key input among multi-channel broadcast signals, and the tuner 101. A video / audio detector 102 configured to detect a video signal and an audio signal from an IF signal received through a?, A voice processor 103 configured to adjust a level of a voice signal, and the voice processor 103 An audio amplification unit 104 configured to amplify the audio signal output from the audio signal output unit; an output unit 105 (for example, a speaker) configured to output the audio signal supplied from the audio amplification unit 103; It consists of a microprocessor 106 which is adapted to control the overall operation of a television receiver including such a configuration.

When such a television receiver selects a channel by key input, a tuner voltage is output from the microprocessor 106 that recognizes the channel, and is supplied to the tuner 101. The tuner 101 broadcasts the broadcast signal of the selected channel among the multi-channel broadcast signals. To be tuned and supplied to the video / audio detector 102.

Subsequently, the video / audio detector 102 detects the video signal and the audio signal from the broadcast signal and outputs the video signal to the video signal processor (not shown), while supplying the audio signal to the audio processor 103. At this time, the voice signal applied to the voice processor 103 is divided into two channels and applied. That is, since the audio signal processing method adopts a stereo system, the audio signal supplied to the audio processing unit 103 is separately supplied into the audio signal of the R channel and the audio signal of the L channel.

In order to adjust the volume of the voice signal, the voice processor 103 that receives the voice signals of the two channels adjusts the level of the voice signal by the data output from the microprocessor 106 and applies the voice signal to the voice amplifier 104. . Then, the audio amplifier 104 amplifies the audio signal sufficiently and supplies it to an output composed of a speaker or other audio output device, so that the audio signal from the broadcast station can be watched along with the video signal.

As described above, an antenna is connected to the tuner that receives the broadcast signal so that the broadcast signal can be optimally received. Most of these antennas are composed of a separate product from a television receiver and are installed outdoors. However, in an area near a broadcasting station or relay station, an indoor antenna is installed instead of an outdoor antenna to receive a broadcast signal.

After the antenna is installed indoors, when the installation direction of the television receiver is changed or when the broadcast signal of a specific channel is not well received, the user changes the antenna direction by checking the reception state of the broadcast signal while changing the direction of the antenna. . That is, in the related art, in order to receive a broadcast signal more clearly, there is a hassle of checking a reception state of a broadcast signal while manually rotating an antenna.

Therefore, the present invention has been devised to solve the above-mentioned drawbacks, and by detecting the noise voltage at a certain angle while rotating the antenna by a motor provided under the antenna, the noise voltage is terminated after the rotation of the antenna is finished. The present invention provides an apparatus and method for adjusting antenna position using a noise voltage, which detects a noise voltage having a minimum value and then rotates the antenna again to adjust the direction of the antenna to a position where a noise voltage of a minimum value is detected. Is there.

The present invention for achieving the object as described above is to adjust the direction of the antenna to control the reception state of the broadcast signal, the process of detecting the noise voltage at a certain angle while rotating the antenna, and storing the detected noise voltage A process of detecting the lowest value by comparing the stored noise voltage with each other when the rotation of the antenna is finished, detecting a noise voltage while re-rotating the antenna and comparing it with the noise voltage of the lowest value, and equalizing the noise voltage of the lowest value It is characterized in that the process of adjusting the position of the antenna by stopping the rotation of the antenna at the position where the noise voltage is detected.

Hereinafter, the configuration according to an embodiment of the present invention in more detail with an exemplary drawing as follows.

According to the present invention, as shown in FIG. 2, in a television receiver including a tuner 12 that tunes a multi-channel broadcast signal received by the antenna 10, the broadcast output from the tuner 12 is performed. IF processing and noise voltage detecting IC 13 for detecting a noise voltage while receiving and processing a signal, and converting the noise voltage output from the IF processing and noise voltage detecting IC 13 into a digital signal to convert the switching IC ( 18), an analog / digital converter 14 applied to the data storage unit 16, and a data reader for reading the noise voltage stored in the data storage unit 16 and applying it to the input terminal of the switching IC 18 ( 17) and switching operation by the switching signal output from the microprocessor 19 to selectively supply the output of the analog / digital converter 14 and the output of the data reader 17 to the microprocessor 19.Outputs a switching signal to the switching IC 18 and the switching IC 18 to set the noise voltage detection mode and the antenna position adjustment mode, detect the minimum value of the noise voltage detected while the antenna 10 rotates, and the antenna 10 ) And a microprocessor 19 for outputting a drive signal for adjusting the position of the antenna 10 to the step motor driver 20 to a position where a noise voltage of the lowest value is detected, and in the microprocessor 19 It further comprises a step motor driver 20 for driving the step motor 11 installed under the antenna 10 by receiving the output drive signal.

In FIG. 2, reference numeral 15 denotes a clock oscillator for oscillating a clock and supplying it to the analog / digital converter 14, and 21 denotes a process of performing a noise voltage detection mode and an antenna position adjustment mode on a screen by a television receiver. OSD text processing unit to process OSD text.

3 is a diagram showing the output state of the noise voltage detected when the rotating antenna 10 is located at each angle in one embodiment of the present invention.

In addition, a flowchart showing an operating state according to the present invention, as shown in Figure 4, in adjusting the direction of the antenna 10 to adjust the reception state of the broadcast signal, while rotating the antenna 10 noise at a predetermined angle Detecting the voltage, storing the detected noise voltage, and comparing the stored noise voltage with each other when the rotation (one rotation) of the antenna 10 is terminated, detecting the lowest noise voltage, and performing the antenna 10 ) Rotates the antenna 10 again by stopping the rotation of the antenna 10 at the position where the noise voltage is detected and contrasted with the lowest noise voltage and the same noise voltage as the lowest noise voltage is detected. Demonstrating the process of making adjustments.

Hereinafter, the effect of the present invention will be described.

When the noise voltage detection mode is set by operating a key (not shown) (S1), the microprocessor 19 generates a switching signal and supplies the switching signal to the switching IC 18, so that the switching IC 18 performs a switching operation. Is applied to the noise voltage read by the data reading unit 17. In addition, the microprocessor 19 generates a driving signal to rotate the antenna 10 and outputs the driving signal to the stepper motor driver 21 so that the microprocessor 19 outputs the driving signal to the stepper motor driver 21 to which the microprocessor 19 is applied. ), The step motor 11 is rotated (S2), and in conjunction with this, the antenna 10 coupled to the rotating shaft of the step motor 20 is also rotated.

At this time, the microprocessor 19 outputs the corresponding OSD data to the OSD character processing unit 21 so that the user can confirm the operation. Therefore, the microprocessor 19 displays the operation state of the noise voltage and the operation state of the antenna position adjustment described later. You can check it on the monitor. In the operation description described below, this operation description is omitted.

When the broadcast signal received through the rotating antenna 10 is applied to the IF processing and noise voltage detecting IC 13 through the tuner 12, the IF processing and noise voltage detecting IC 13 is IF. In order to process the signal into a video signal and an audio signal, a video signal processor and an audio signal processor are respectively supplied to a signal, and a noise voltage is supplied to the analog / digital converter 14.

That is, as shown in FIG. 3, the IF processing and noise voltage detecting IC 13 has an angle of 10 degrees (in the present invention, 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees, 225 degrees, The noise voltage (2V, 3V, 3.5V, 2.8V, 2.4V, 2.1V, 1.5V, 4.3V, etc. will be described as an example) every time the rotation (S3) of 270 degrees and 315 degrees is taken as an example. It detects and supplies it to the analog-to-digital converter 14.

Subsequently, the analog / digital converter 14 converts the noise voltage of the analog signal into a digital signal and stores it in the data storage unit 16 (S4). This operation is repeated while the antenna 10 rotates once (S5). Is done.

After the antenna 10 has rotated once, the microprocessor 19 outputs read data to the data storage unit 16 in order to detect the lowest value of the plurality of noise voltages, so that the data readout unit 17 stores the data storage unit 16. ) And the data corresponding to the noise voltage stored in () is sequentially read (S6) and supplied to the microprocessor (19).

Then, the microprocessor 19 sequentially compares the supplied noise voltage and detects the lowest value. That is, the microprocessor 19 contrasts the magnitude relationship between the noise voltage (2V) detected when the antenna 10 is rotated by 0 degrees and the noise voltage (3V) detected when the supplied antenna 10 is rotated by 45 degrees. Then, the detected noise voltage 2V is stored (S8) when the antenna 10 determined as the small value S7 is rotated by 0 degrees. In addition, a small noise voltage (2V) is stored in preparation for the magnitude relationship between the detected noise voltage (3.5) and the previously stored noise voltage (2V) when the antenna 10 is rotated by 90 degrees. Reading of noise voltages (2.8V, 2.4V, 2.1V, 1.5V, 4.3V) corresponding to each angle (135 degrees, 180 degrees, 225 degrees, 270 degrees, 315 degrees) stored in the unit 16 is performed. Repeatedly until the end (S9), the microprocessor 19 recognizes the lowest noise voltage (1.5V).

The microprocessor 19, which has recognized the lowest noise voltage among the noise voltages, determines that the noise voltage detection mode is terminated and the antenna position adjustment mode is set (S10), and outputs a switching signal to the switching IC 18. 19 is directly connected to the analog / digital converter 14. In addition, the microprocessor 19 generates a driving signal to re-rotate the antenna 10 and outputs the driving signal to the stepper motor driver 21 so that the stepper motor 11 is rotated by the stepper motor driver 20 applied thereto (S11). In conjunction with this, the antenna 10 coupled to the rotation shaft of the stepper motor 20 is also rotated.

When the broadcast signal received via the rotating antenna 10 is applied to the IF processing and noise voltage detecting IC 13 through the tuner 12, the IF processing and noise voltage detecting IC 13 broadcasts. The noise voltage is detected from the signal (S12) and supplied to the analog / digital converter 14.

The microprocessor 19 then compares it with the stored lowest noise voltage to determine whether it is the same (S13). That is, it is to confirm whether the position of the antenna 10 to be re-rotated is the position where the noise voltage is detected as the minimum value.

As a result, when the same noise voltage is detected, the drive signal output to the stepper motor driver 20 is blocked to prevent the antenna 10 from rotating any further.

Accordingly, the present invention can automatically adjust the direction of the antenna 10 to the position where the broadcast signal is best received.

Preferably, the operation of the noise voltage detection mode or the antenna position adjustment mode as described above is displayed by the OSD even when driving several LEDs driven under the control of the microprocessor 19 without displaying them as OSD characters through the monitor. The same effect can be obtained.

The present invention has been described only with respect to an embodiment of the antenna position adjusting device and the method using a noise voltage as described in the claims, but is not limited to this and various applications and modifications will be possible to those skilled in the art.

Claims (6)

In a television receiver comprising a tuner 12 that tunes a multi-channel broadcast signal received by the antenna 10, a noise signal is detected while receiving and processing a broadcast signal output from the tuner 12. An IC 13 for IF processing and noise voltage detection; An analog / digital converter 14 for converting a noise voltage output from the IF processing and noise voltage detecting IC 13 into a digital signal; a data reading unit for reading a noise voltage stored in the data storage unit 16; (17); switching operation by a switching signal output from the microprocessor 19 to selectively supply the output of the analog / digital converter 14 and the output of the data reader 17 to the microprocessor 19 Outputs a switching signal to the switching IC 18 and the switching IC 18 to set the noise voltage detection mode and the antenna position adjustment mode, and detects the minimum value of the noise voltages detected during one rotation of the antenna 10. A microprocessor 19 for outputting a drive signal for adjusting the position of the antenna 10 to the position where the noise voltage of the lowest value is detected by rotating 10 again to the stepper motor driver 20; An antenna using a noise voltage, characterized by further comprising a step motor driver 20 for driving the step motor 11 installed under the antenna 10 by receiving the drive signal output from the microprocessor 19. Positioning device. 2. The switching IC (18) according to claim 1, characterized in that the switching IC (18) is connected to the data storage section (16) in the noise voltage detection mode and to the analog / digital conversion section (14) in the antenna position adjustment mode. Antenna position adjusting device using the noise voltage. The antenna using a noise voltage according to claim 1, wherein the microprocessor (19) is connected with an OSD character processor (21) for processing OSD characters showing the performance of the noise voltage detection mode and the antenna position adjustment mode. Positioning device. In controlling the reception state of the broadcast signal by adjusting the direction of the antenna, the step of detecting the noise voltage at a predetermined angle while rotating the antenna; Storing the detected noise voltage; Detecting the lowest value by comparing the stored noise voltage with each other when the rotation of the antenna is completed; Detecting the noise voltage while re-rotating the antenna and contrasting it with the lowest noise voltage; And adjusting the position of the antenna by stopping the rotation of the antenna at the position where the noise voltage equal to the lowest noise voltage is detected. The method of claim 4, wherein the noise voltage is detected by rotating the antenna by one rotation. The antenna position according to claim 4, wherein the noise voltage detection mode is terminated when the noise voltage corresponding to the lowest value is detected from the plurality of noise voltages, and the antenna position adjustment mode is performed. How to adjust.