JPH0658625U - Receiver with antenna direction adjustment function - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a receiving device with an antenna direction adjusting function capable of accurately and easily adjusting the direction of an antenna by one person. A detection unit 12, an amplification unit 13, a low frequency oscillation unit 14, and an output side of an intermediate frequency amplifier 10 of a BS converter 2 for inputting a high frequency signal received by a parabolic antenna 1.
A sounding unit 15 is added. The adjustment state can be confirmed by changing the audible sound generated by the sound producing unit 15 before and after the adjustment of the direction of the parabolic antenna 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a receiving device with an antenna direction adjusting function, which is provided with a function of adjusting the direction of an antenna such as a BS or CS antenna to the BS or CS that is a transmission source.

[0002]

[Prior art]

 A parabolic antenna with excellent directivity is used to receive radio waves from BS (broadcast satellite), CS (communication satellite), etc. Here, since the radio wave transmission sources BS and CS are located far away from the mainland Japan, for example, about 36000 km above Borneo, Indonesia, in order to receive the radio wave from the transmission source at this position with the parabolic antenna, It is necessary to adjust the elevation angle and azimuth angle of the parabolic antenna with high accuracy and direct them to the optimum positions for BS and CS.

FIG. 2 shows a conventional configuration example of this type of receiving apparatus, in which the BS converter 2 of the parabolic antenna 1 is connected to a tuner 4 via a cable 3, and the tuner 4 is further connected via a cable 3 to a television. It is connected to the receiver 5. Here, the parabolic antenna 1 is generally located outdoors, and the tuner 4 and the television receiver 5 are located indoors.

In order to adjust the direction of the parabolic antenna 1 with such a receiving device, one person adjusts the elevation angle and the azimuth angle of the parabolic antenna 1 outdoors, while the other person indoors reflects the television receiver 5. After observing, the elevation angle and azimuth angle of the parabolic antenna 1 are fixed when the image quality is improved.

However, this adjustment method has a drawback that it requires two workers, and therefore a means by which one person can make adjustments has been considered. This is received by the parabolic antenna 1, and a light emitter such as an LED whose brightness changes according to the level of the desired signal selected by the tuner 4 is incorporated in the television receiver 5, and normally the light emitter is The light is turned on, and when the direction of the parabolic antenna 1 is adjusted and the elevation angle and the azimuth angle reach optimum values, the light emitter is turned off.

[0006]

[Problems to be solved by the device]

 By the way, in such a receiving device, the operator adjusting the direction of the parabolic antenna works from the outside while observing the light emitter of the television receiver inside the room, so that the light from the outside hits the light emitter and emits light. It becomes difficult to clearly distinguish whether the body is on or off, which results in poor workability and difficulty in easily adjusting the direction of the parabolic antenna.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a receiving device with an antenna direction adjusting function capable of easily adjusting the direction of a parabolic antenna. Is.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is a receiving device provided with a function of adjusting the direction of an antenna to match a transmission source, and an output of an intermediate frequency amplification stage of a receiving circuit for a high frequency signal received by the antenna. Connected to the side for detecting a received signal, an amplifier for amplifying the output signal of the detector, and a low-frequency oscillator for generating a low frequency controlled by the level of the output signal of the amplifier. And a sounding unit that generates an audible sound by being controlled by the output signal of the low frequency oscillating unit.

[0009]

[Action]

 The high-frequency signal received by the antenna is converted into an intermediate-frequency signal by the receiving circuit and amplified, and then the received signal is detected by the detection section.This detected signal is amplified by the amplification section, and the amplified output signal A low frequency is generated in the low frequency oscillator, and an audible sound is generated in the sound generator by the low frequency output signal. Therefore, when adjusting the direction of the antenna, it is possible for one person to perform the adjustment accurately and easily by checking the audible sound.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a receiving device with an antenna adjusting function of the present invention, and 2 is a BS converter provided in the parabolic antenna 1, which is an RF input for inputting a high frequency signal received by the parabolic antenna 1. Terminal 6, RF amplifier 7 for amplifying this high frequency signal, Mixer 9 for mixing this high frequency signal with the local signal from the local oscillator 8 and converting it to an intermediate frequency signal, Intermediate frequency amplifier 10 for amplifying the intermediate frequency signal , An IF output terminal 11 for outputting an intermediate frequency signal.

Reference numeral 12 is a detection unit that is connected to the output side of the intermediate frequency amplifier 10 to detect a received signal, 13 is an amplification unit that is connected to the detection unit 12 and that amplifies the detection output signal, and 14 is the amplification unit 13. A low-frequency oscillator that is connected and generates a low frequency by controlling the level of the amplified output signal. Reference numeral 15 is a sounding unit that is connected to the low-frequency oscillator 14 and that is controlled by the oscillation output signal to generate an audible sound. is there. When the direction of the parabolic antenna 1 is not adjusted to the optimum position, the low frequency oscillating section 14 oscillates a low frequency because the level of the amplified output signal becomes small, and the sound producing section 15 responds to this by audible sound. Can be configured to generate. In this case, when the direction of the parabolic antenna 1 is adjusted to the optimum position, the level of the amplified output signal becomes large and the low frequency oscillation is stopped, and in response to this, the sound generator 15 produces an audible sound. Is configured not to occur.

As described above, the detection unit 12, the amplification unit 13, the low-frequency oscillation unit 14, and the sound generation unit 15 are added to the output side of the intermediate frequency amplifier 10 of the BS converter 2 in this embodiment. Reference numeral 16 denotes a switch, which is turned on when the direction of the parabolic antenna 1 is adjusted, and turned off after the adjustment is completed. The switch 16 may be provided with a timer function so that it is automatically turned off after the completion of the adjustment so as to stop the operation of each additional portion as described above.

Next, the operation of this embodiment will be described. First, before adjusting the direction of the parabolic antenna 1, the switch 16 is turned on to put the operation of each of the addition units 12, 13, 14, and 15 into a standby state. At this stage, since the direction of the parabolic antenna 1 is not yet adjusted to the optimum position, the level of the output signal of the amplifying unit 13 is small due to the above setting, so the low frequency oscillating unit 14 oscillates a low frequency. In response to this, the sound producing unit 15 produces an audible sound. Therefore, the operator can confirm this audible sound.

Subsequently, the operating portion of the parabolic antenna 1 is operated to adjust the elevation angle and the azimuth angle. When the direction of the parabolic antenna 1 is adjusted to the optimum position or in the vicinity thereof, the level of the output signal of the amplifying unit 13 becomes large and the level of the output signal of the amplifying unit 13 becomes large by the above setting. Therefore, the low frequency oscillating unit 14 stops the low frequency oscillating, and in response to this, the sound producing unit 15 stops generating the audible sound. Therefore, the operator can know that the parabolic antenna 1 is adjusted to the optimum position by confirming the attenuation state of the audible sound.

As described above, according to this embodiment, when the direction of the parabolic antenna 1 is adjusted to the optimum position with respect to the transmission source, it is sufficient to perform the work while checking the audible sound. It will be possible to easily and easily adjust to the optimum position. After the adjustment is completed, the operation of each addition unit 12, 13, 14, 15 can be stopped by manually turning off the switch 16 or by automatically turning off the timer. Then, the high frequency signal received by the parabolic antenna 1 is displayed on the television receiver 5 via the tuner 4.

In the embodiment, the audible sound is generated before the direction of the parabolic antenna 1 is adjusted, and the audible sound is stopped after the direction is adjusted. However, these modes may be reversed depending on the purpose and application. It is also optional to set the relationship. Further, the transmission source is not limited to the BS, and any application in which reception is performed using the parabola antenna 1 can be applied.

[0017]

[Effect of device]

 As described above, according to the present invention, the output side of the intermediate frequency amplification stage of the receiving circuit of the high frequency signal received by the antenna is provided with the constituent means for changing the audible sound according to before and after the adjustment of the orientation of the antenna. As a result, one person can adjust the antenna direction accurately and easily.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a receiving device with an antenna direction adjusting function of the present invention.

FIG. 2 is a configuration diagram showing a conventional example.

[Explanation of symbols]

 1 Parabolic Antenna 2 BS Converter 10 Intermediate Frequency Amplifier 12 Detection Section 13 Amplification Section 14 Low Frequency Oscillation Section 15 Oscillation Section 16 Switch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Minami 4-7-4 Kitamachi, Warabi-shi, Saitama Japan Antenna Company Warabi factory

Claims (1)

[Scope of utility model registration request] 1. A receiving device having a function of adjusting the direction of an antenna to match a transmission source, the receiving device being connected to an output side of an intermediate frequency amplification stage of a receiving circuit for receiving a high frequency signal received by the antenna. A detector that detects a signal, an amplifier that amplifies the output signal of the detector, a low-frequency oscillator that generates a low frequency controlled by the level of the output signal of the amplifier, and an output of the low-frequency oscillator. A receiving device with an antenna direction adjusting function, comprising: a sounding unit that is controlled by a signal to generate an audible sound.