CN2215786Y

CN2215786Y - TV channel increasing device

Info

Publication number: CN2215786Y
Application number: CN 94239252
Authority: CN
Inventors: 刘广盛
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-24
Filing date: 1994-08-24
Publication date: 1995-12-20
Anticipated expiration: 2004-08-24

Abstract

The utility model relates to a TV channel increasing device which can receive supplemental channels. The utility model is composed of a transmitter, a receiver, a microprocessor CPU, a power switch, a sound volume and wave band controlling switch circuit, a radio frequency head and a socket and is characterized in that the back side of the microprocessor CPU is connected with a voltage synthesis all band tuner radio frequency head with 45-860MHz, and the voltage synthesis all band tuner radio frequency head is connected with a TV through the socket. The utility model has the advantages that the price is low, the channel, the power switch, the sound volume, the brightness, the contrast and the color can be shifted by a remote controller, and the supplemental channel can also be received.

Description

TV channel increasing device

The utility model relates to a kind of television channel increasing that can receive additional channel.

Because popularizing of television station channel increase and cable television network, family Central Plains has or not remote control and has only the TV channel of 8 channel selections not enough, and former mechanical switch channel selection is very inconvenient, the easy oxidation of switch, mix up the also easy treadmill of channel, I had once applied for three television channel increasing patents for this reason, and (number of patent application is respectively " 932263.1 ", " 94227882.8 ", " 94238590.X ", have distant control function and can watch 20 for numerous televiewers provide, the television channel increasing of 40 channels, but along with popularizing of continuous increase of television channel and cable television network, above-mentioned television channel increasing can not satisfy customer requirements, reason is that the highest frequency that cable TV station uses is 550KHZ, this can only transmit with very high frequency(VHF) VHF, and VHF has only 12 channels, therefrom still to remove the channel number of wireless transmission, therefore, in fact have only 10 channels, so need to adopt adjacent frequency channel (91～162KHZ, 223～420KHZ) transmission, promptly adopt additional channel to solve transmission level, transmit outside the VHF scope television transmitting station at present, for example Shanghai Oriental Pearl platform increases several programs, cable TV then needs additional channel, additional channel is Z1～Z37 at present, existing channel increasing can not receive the information of additional channel, though adapter can receive 45～550KHZ on the machine of television set in the market, can receive additional channel Z1～Z37, but price is expensive, and can only the remote control volume, brightness, colour, contrast etc.

For this reason, the purpose of this utility model provides an energy remote control switching channels, and mains switch volume, brightness, contrast, colour can receive additional channel, low-cost television channel increasing.

The technical solution of the utility model is to set up to be connected with a tuner behind the microprocessor CPU of original television channel increasing, and is connected with television set by socket.

The utility model embodiment does a description in conjunction with the accompanying drawings.

Accompanying drawing is the utility model schematic circuit.

The utility model is by reflector, receiver, microprocessor CPU, mains switch, volume and wave band control switch circuit, tuner, connector socket is formed, its design feature as shown in drawings, the synthetic all band tuner 1 of voltage that connects a 45～860KHZ in the microprocessor CPU back, this tuner is connected with color television set by 7 lines of socket 2 usefulness, specifically do following connection, + 12V line connects the B+ or the BK point of colour TV tuner, ACC, AFC, IF connects the corresponding AGC of colour TV tuner respectively, AFC, IF, earth terminal connects colour TV tuner shell, volume VDL line connects the volume potentiometer dotted line of colour TV or connects colour TV direct current volume control point, and the 30V line connects the 30V or the 33V point of colour TV preselector.

Television set+12V through the B+ of tuner 1 end and COU+12V holds and is connected, from L, the H of CPU, the L that U wave band voltage connects the wave band VHF of tuner 1 respectively, the H of VHF and UHF are connected from the 0～30V of CPU and the tuning voltage end TV of tuner 1.

The utility model is compared its advantage with existing channel increasing: can receive additional channel, the repacking debugging is convenient, be that the colour TV of touch-button channel selection is as long as be put into the sky channel with television set and namely do not have the TV programme place for electric-controlled type, the colour TV of mechanical type channel selection, down state gets final product then to make all channel button switches be in not. Adapter all can receive additional channel on the utility model and the existing TV set, and both compare, the former low price, and remote-controlled switching channels, power switch, volume, brightness, contrast, colour etc.

Claims

1, a kind of by reflector, receiver, the television channel increasing that microprocessor CPU, mains switch, volume and wave band control switch are formed, it is characterized in that the microprocessor CPU back of former television channel increasing is set up and is connected with a tuner (1) and being connected with television set by socket (2).

2, television channel increasing according to claim 1 is characterized in that, described tuner (1) is the synthetic all band tuner of the voltage of a 45～860MHF.