JPS61283229A - High frequency receiver - Google Patents

Abstract

PURPOSE:To eliminate the need for a signal transmission jumper between a VIF section and an SIF section and between a decoder and an encoder section by constituting a unit section incorporating the VIF section, the SIF section, and the decoder and encoder section on a unit incorporating a demodulator section and an antenna RF modulator section. CONSTITUTION:A high frequency receiver 37 is formed by constituting the VIF section SIF section 35 and the decoder and encoder section 38 on the unit incorporating a tuner 43, a demodulator section constituting a video and sound intermediate frequency amplifier circuit (VIF and SIF) 24, an antenna RF modulator section 22. Thus, the connection coaxial cable between the antenna RF modulator section 22 and the turner 43 a UHF balanced feeder line connecting a UHF antenna input terminal and a turner UHF input terminal are not required and the jumper for signal processing between the tuner 23 and the VIF.SIF section 35 is not required.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to televisions, video recorders (VTRs), etc.
) and other receivers.

2. Prior Art The conventional technology will be explained with reference to FIG. Figure 2 shows a conventional demodulator and antenna.
A series of VTR structures in which RF modulators and decoders/encoders are configured. FIG. 2(a) is a plan view of the main part, FIG. 2(b) is a front view thereof, and FIG. 2(0) is a side view thereof. In Fig. 2, 1 is the main body frame of the VTR;
2 is an antenna/RF modulator section that includes a VHF antenna input section and an RF modulator; 4 is an input terminal into which a signal from the antenna is input; 3 is an antenna and R
This is an output terminal to which the F modulator signal is output.

6 is a UHF antenna input terminal, and 6 is an HF antenna output terminal. 15 is a demodulator section, which includes a tuner, a video intermediate frequency amplification section (VIP), and an audio intermediate frequency amplification section (
SIF) is configured.

7 is a chip for converting the high frequency signal from the antenna and RF modulator section 2 into an intermediate frequency signal; 8 is a video and audio intermediate frequency amplification section; Coaxial cable for input to 7, 1o is tTHF input terminal of tuner 7, 11
is a UHF balanced feeder line 12 for inputting the signal from the UHF input terminal 6 to the UHF input terminal 1o of the tuner 7;
is the V)fF input terminal of the tuner 7. Reference numeral 13 denotes a connection line for processing signals between the tuner 7, the VIP, and the SIF section 8, and generally uses a thin coat jumper line or the like. 16 is a signal transmission connector from the demodulator section to the decoder/encoder section 41, and 4o is a signal transmission line to the decoder/encoder. Reference numeral 41 denotes a decoder/encoder section, which is composed of, for example, one printed (P) board. 17 is a connector for transmitting signals from the demodulator. 19 is a decoder
A connector for transmitting signals from the encoder section 41 to the main body circuit, and 42 is its signal processing line. 43 and 44 are holes for fixing the decoder/encoder section 41.

Problems to be Solved by the Invention However, in the case of a VTR configuration as shown in FIG. 2, the antenna/RF modulator section 2 and the demodulator section 15 are separated, so there is a large dead space and it is difficult to downsize. The problem is that it cannot be realized. Also,
A coaxial cable 9 that connects the antenna/RF modulator section 2 and the tuner 7, a UHF balanced feeder line 11 that connects the UHF antenna input terminal 6 and the UHF input terminal 1o of the tuner 7, and between the f7 and the VIP-SIF section. Since the connection line 13 that processes the signal cannot be deleted,
A major problem is that cost reduction cannot be achieved.

Furthermore, since the signal transmission line 23 that performs signal processing between the demodulator section 15 and the decoder/encoder section cannot be removed, there is a problem that cost reduction and size reduction cannot be realized.

Means for Solving the Problems In order to solve the above problems, the high frequency receiving apparatus of the present invention has a tuner and a VIP in the front end and decoder/encoder of receivers including VTRs and televisions.
- The VIP section or SIF section and the decoder/encoder section are installed on a unit that has an integrated structure of the demodulator section, which includes the 3rF section, the antenna, and the antenna/RF modulator section that converts video/audio signals into high-frequency signals. The unit part has an integrated structure.

Effect By configuring as described above, the coaxial cable and U for connecting the antenna/RF modulator section and the tuner
) The UHF balanced feeder line connecting between the IF antenna input terminal and the tuner UHF input terminal can be deleted, and the connection line for signal processing between the tuner and the VIP/SIF section can be deleted. Furthermore, the signal transmission line that performs signal processing between the demodulator section and the decoder/encoder section can also be eliminated.

EXAMPLE Hereinafter, an implementation sequence of the present invention will be explained using FIGS. 1(a) and 1(b). (2L) is a front view of the high-frequency receiver having an integrated structure according to the present invention, and (2L) is a bottom view taken along the mu line A' in (a).

In FIG. 1, the same components as those shown in FIG. 2 are designated by the same reference numerals, and their description will be omitted here. 2o is a high frequency reception and conversion device with an integrated structure, which includes an anti-RF modulator section 22, a tune section 23. V
This is what the IP-8 IF section 24 is configured of. 21
are 22 and 23.

For example, one P board has 24 circuits.
Although this is a temporary configuration, it is not limited to a single P board configuration. Reference numeral 22 denotes an antenna/RF modulator section, and the transmission of signals from the tuner section from 22 is not done by a coaxial cable, but by, for example, a pattern. 23 is a tuner section, 24
is the VIP/SIF section, and the signal transmission from 23 to 24 is not transmitted by a connecting line, but for example, P
It is conveyed by the pattern on the board.

25 and 26 are connector terminals for signal input/output. 2
7 is a UHF input terminal of the tuner unit 23, and the connection with the UHF input terminal 5 is not connected by a UHF balanced feeder line, but is configured to be connected to a terminal formed on the frame, for example. It is.

37 is a high frequency receiving device according to the present invention, which includes a tuner 23,
Video and audio intermediate frequency amplification circuit (VI, F and 5I
F) The demodulator section 24 and the antenna/PIF modulator section 22 are integrated into a unit, and the 712 section/SIF section 35 and the decoder/encoder section 38 are constructed on the unit. 3o is 35 and the printer in which the decoder and encoder sections are configured) (
P) board, which has a single printed board configuration, but is not limited to a single P board configuration. 35 is V
An IF section and an SIF section are configured. 38 is a decoder section and an encoder section, and the signal transmission from 35 is not carried out by a transmission line, but by, for example, a pattern. Reference numeral 33 indicates a signal line for signal transmission with 24, such as a connector pin, 32 indicates a holder for fixing a bottle, and 31 indicates a female connector into which the bottle is inserted. 39 is a fixing holder for fixing on the unit above 20. 34 is a decoder section and an encoder section 3
This is a connector for signal transmission from 8 to the main circuit.

Effects of the Invention As described above, the present invention combines the demodulator section and the antenna.
On the unit with an integrated structure of the RF modulator section,
By configuring a unit section in which the VIF section, SIF section, decoder and encoder section are integrated,
Since the connection lines for signal transmission between the y section and the SIF section and the decoder and encoder sections can be omitted, it is possible to realize miniaturization and cost reduction. Furthermore, since it has an integrated structure, it is possible to realize a miniaturized high frequency receiving device that requires less installation space.

[Brief explanation of drawings]

Figures 1 (IL) and (b) are a front view and a bottom view of an embodiment of the present invention, and Figures 2 (&), (b), and (C) are a top view, front view, and side view of a conventional example. It is. , 22... Antenna + 1 RF modulator section, 2
3 Tuner, 24...Video and audio intermediate frequency amplification circuit, 36...VIF section/SIF section, 37.
. . . High frequency receiving device, 38 . . . Decoder and encoder section.

Claims (1)

[Claims] In the front end and decoder/encoder section of the receiver, a unit that has an integrated structure of a video or audio intermediate frequency amplification section, a decoder, and an encoder section on a unit that has an integrated structure of a demodulator section and an antenna/RF modulator section. A high frequency receiving device comprising: