JP2564750Y2 - Tuner for satellite broadcast reception - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tuner device for receiving satellite broadcasting.

[0002]

2. Description of the Related Art Conventionally, a tuner device for receiving satellite broadcasting has
The configuration is as shown in FIG. That is, in FIG. 2, a tuner device 1 for satellite broadcast reception amplifies a signal from an antenna input terminal 2 that can be connected to an antenna, selects a high frequency signal in a frequency band of a desired channel by a tuning circuit, and then outputs an intermediate frequency signal. The whole is configured as one unit mounted in a case 4 so as to output the signal from the television signal output terminal 3 by performing frequency conversion, amplification, and detection.

[0003] The satellite broadcast receiving tuner device 1 configured as described above is usually used as shown in FIG. That is, the satellite broadcast receiving signal input from the antenna is divided into two satellite broadcast receiving signals by the distributor 5 mounted on the case 7, and one of the satellite broadcast receiving signals is input to the antenna. The signal is input from the terminal 2 to the satellite broadcast receiving tuner 1, and the satellite broadcast receiving tuner 1
By inputting a television signal output from the television signal output terminal 3 to an input terminal of a television device or a video device, the television signal is displayed on a display device such as a CRT or recorded on a video tape or the like. I have to.

The other satellite broadcast receiving signal divided by the distributor 5 is input to an antenna input terminal of a television device or a video device via an output terminal 6 so that the satellite broadcast receiving signal is received. The signal is received and displayed on a cathode ray tube or the like or recorded.

[0005]

However, in the satellite broadcast receiving tuner device 1 configured as described above, the satellite broadcast receiving tuner device 1 and the distributor 5 are separate units, so that the size of the device is increased. At the same time, there is a problem that the assembly is troublesome.

SUMMARY OF THE INVENTION In view of the above, the present invention incorporates a distributor into a substrate in a tuner for satellite broadcast reception, thereby providing a small-sized satellite broadcast receiver having a simple structure and easy assembly. It is an object to provide a tuner device for use.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a booster circuit to which a signal from an antenna input terminal is input, and the signal from the booster circuit is distributed to a plurality of reception signals. A distributor circuit unit, a tuner circuit unit for receiving satellite broadcasting to which a signal distributed by the distributor circuit unit is input via a tuner attenuator circuit unit, and an attenuator circuit for an output terminal provided in the distributor circuit unit This is achieved by a tuner device for receiving satellite broadcasts, wherein a television reception signal output terminal connected via a unit is formed on one substrate provided in a case.

[0008]

According to the above arrangement, since the distributor circuit for processing the satellite broadcast reception signal is formed on the substrate in the case together with the satellite broadcast reception tuner circuit, all the circuits are provided. The parts are integrated into the case, so that the structure is simple, the assembly is easy, and the device can be made compact.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

FIG. 1 shows an embodiment of a tuner device for receiving satellite broadcasting according to the present invention.

The satellite broadcast receiving tuner device 10 has an antenna input terminal 11 to be connected to an antenna (not shown).
, A distributor circuit 13 to which a signal from the booster circuit 12 is input and distributes the two signals for receiving satellite broadcasting, and a distributor circuit 13 One of the received satellite broadcast receiving signals is inputted, and the tuner attenuator circuit 16b connected to the satellite broadcast receiving tuner circuit 14;
The other satellite broadcast reception signal distributed by the above is input, and the output terminal attenuator circuit section 16a connected to the television reception signal output terminal 17 has a distributor section 1
9. An RF unit 43 including a filter 21, an amplifier 22, an AGC circuit 23, a tracking filter 24, an amplifier 25, and an AGC circuit 26. A frequency converter 44 including a mixer 27, a transmitter 28, a dividing cycle 29, and a PLL circuit 30; A
GC circuit 31, amplifier 32, surface acoustic wave filter 33,
An IF unit 40 including the amplifier 34; A demodulation unit 41 including an FM detection circuit 35; And a tuner circuit unit 14 for receiving satellite broadcasting, which is composed of four blocks.

In the figure, T1 is a power supply terminal of the booster circuit section 12. T2 is a local oscillation control voltage terminal of the PLL circuit 30.

Here, the tuner device 10 for receiving satellite broadcasting will be described. When a signal from an antenna is input to an antenna input terminal 11, the signal is transmitted to the booster circuit unit 1.
After increasing the gain by 2, the divider circuit 13 divides the signal into two satellite broadcast reception signals.

Thus, the one satellite broadcast receiving signal has its gain adjusted by the tuner attenuator circuit 16b and is input to the satellite broadcast receiving tuner circuit 14. The satellite broadcast receiving tuner circuit 14 , Input signal R
After the signal is amplified by the F unit 43 and the high frequency signal of the frequency band of the desired channel is selected by the tuning circuit by the frequency conversion unit 44, the IF unit 40 converts the frequency to an intermediate frequency signal, amplifies the signal, and detects by the demodulation unit 41. Thus, the signal is output from the television signal output terminal 15.

Thus, by inputting the television signal to an input terminal of a television device or a video device (not shown), the television signal is displayed on a display device such as a CRT or recorded on a video tape or the like.

The other satellite broadcast reception signal divided by the distributor circuit section 13 is output from the television reception signal output terminal 17 after the gain is adjusted by the output terminal attenuator circuit section 16a. By being output and further input to an antenna input terminal of a television device or video device (not shown), a television broadcast can be received and similarly displayed on a cathode ray tube or the like, or can be recorded.

Each of the circuit portions is formed on a single substrate 18 provided in a case (not shown), and each circuit portion is formed by a shield plate as shown in FIG. It is partitioned.

[0018]

[Effects of the Invention] As described above, according to the present invention,
By integrating the booster circuit section, the distributor circuit section, and the attenuator circuit section into one substrate in the satellite broadcast receiving tuner device, a small-sized satellite broadcast receiving apparatus having a simple configuration and easy assembly is provided. A tuner may be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a tuner device according to the present invention.

FIG. 2 is a block diagram illustrating an example of a conventional tuner device.

[Description of Signs] 10 Satellite broadcast receiving tuner device 11 Antenna input terminal 12 Booster circuit section 13 Divider circuit section 14 Satellite broadcast receiving tuner circuit section 15 Television signal output terminal 16a Output terminal attenuator circuit section 16b Tuner Attenuator circuit 17 Signal output terminal for television reception 18 Substrate 19 Distributor

Claims (1)

(57) [Scope of request for utility model registration] A signal is input from an antenna input terminal.
A booster circuit section and a plurality of signals from the booster circuit section.
Distributor circuit for distributing the received signal to the same, and the distributor circuit
The signal distributed by the section passes through the tuner attenuator circuit section.
Tuner circuit section for satellite broadcast reception inputted as input
Connected to the distributor circuit via the output terminal attenuator circuit.
Signal output terminal for television reception
Characterized by being formed on one obtained substrate.
Tuners for satellite broadcast reception.