CN2381083Y - Colour television set with satellite receiving function - Google Patents

Abstract

The utility model relates to a color television set with a satellite receiving function. Composite television signals output by a satellite receiver, two paths of analog sound signals, all television signals output by a television receiver and two paths of sound signals pass through a select switch, and are respectively processed by a set of processing units for satellite signals and television signals. The existing television signal processor is used for raising the quality of the satellite signals received by the color television set with a satellite receiving function and maintaining the quality of digital signals.

Description

The color television set that has satellite receiving function

The utility model belongs to television receiver, and specific design is to the improvement of conversion satellite-signal and TV signal device in the existing satellite television receiver.

Before the utility model is made, satellite television receiving system occurred originally, but main use is analogue technique, reception for emerging digital satellite programme televised live of modern times, only limit to independently receiving element: digital satellite set-top box or large-scale digital satellite receive, forwarding unit, the general independence of these equipment is strong, or cost an arm and a leg, do not provide enough ratios of performance to price to common user, and also be not the digital satellite receiving equipment of one at present with modern color television set appearance.So can not satisfy China's actual conditions towards the characteristics of average family use and the digital satellite system of matching design small utility, to realize the performance characteristics of the information processing that modern digitalization is brought.General receiver of the prior art has brought distorted signals and quality to descend when the inter-process signal simultaneously, and receiving equipment is descended to the quality of reception of satellite-signal, is difficult to realize to digital development.

Goal of the invention of the present utility model is, provides a kind of by selector switch for addressing the above problem, and overlaps the color television set that satellite is accepted function that has that processing unit can be handled signal separately at satellite-signal and TV signal respectively with one.Another goal of the invention of the present utility model is that the signal processing apparatus of the existing TV of utilization improves the quality that satellite is accepted the quality of receiving satellite signal in the color television set of function and kept digital signal.

For addressing the above problem, the utility model is a kind of color television set that has satellite receiving function of realizing like this, comprise satellite receiver, radiovisor and the television set small-signal processing unit that mainly constitutes by integrated circuit, by videoblankingsync and the two-way analog audio signal and composite video signal of being exported by radiovisor and corresponding in twos two inputs that are connected multichannel alternative logic selector switch respectively of two-way audio signal of satellite receiver output, the output of this switch connects the small-signal processing unit; The R of satellite receiver, G, B signal directly connect the small-signal processing unit; The output of small-signal processing unit connects display unit.

The described a kind of improvement that has the color television set of satellite receiving function is, the multichannel alternative logic selector switch that the satellite of this color television set or TV are selected adopts the M52065P type, an input that is connected respectively to multichannel alternative logic selector switch by the videoblankingsync and the two-way analog audio signal of satellite receiver output; Composite video signal and corresponding another input that adopts multichannel alternative logic selector switch that is connected respectively to of two-way audio signal by radiovisor output with satellite-signal; Multichannel alternative logic selector switch output connects the input of AV control chip on the television signal plate, and the output of this control chip connects the input of the integrated circuit of small-signal processing unit; The input of YS, R, G, B signal and the integrated circuit that is connected the small-signal processing unit of satellite receiver output, the output of the integrated circuit of this small-signal processing unit connects display unit.

Advantage of the present utility model and good effect are, this machine has increased the satellite digital receiving function on the basis of general simulated television, realized that easily substituting general television set when digital broadcasting now develops on a large scale receives high-quality program, it mainly contains, and simulated television receives and satellite receives two parts.Do not have to do very big adjustment for original simulated television receiving unit, continue to have kept its characteristic.And become the TV signal of RGB component to drive the picture tube displayed image for the satellite-signal direct coding, avoided the picture intelligence quality that simulation process is brought in the digital satellite signal processing procedure to reduce greatly, realized digital processing procedure, make clear image, beautiful, level is distinct; Simultaneously, utilize the composite video signal of satellite coding in television set, to extract a row drive signal of demonstration, reduced way required when the satellite/terrestrial TV switches, can finish the selection of image and sound accompaniment with a logic selector switch and export, reduced cost.Can realize simultaneously the AV output of satellite programming, be beneficial to that the user records or connect display device in addition.Need not do very big change to the existing equipment of television set like this, just can realize the control that satellite reception/common TV receives.Help producer and on original production line, carry out large batch of production.And reduced the cost of this receiver hardware device, reached the good ratio of performance to price.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is the circuit diagram of an embodiment multichannel of the utility model either-or switch;

Fig. 2 is the circuit diagram of handling for TV signal and satellite-signal in an embodiment small-signal of the utility model processing unit.

As shown in Figure 1, a kind of color television set that has satellite receiving function comprises satellite receiver, radiovisor and is the television set small-signal processing unit that the integrated circuit of TB1227N constitutes by model mainly; Wherein by the CVBS videoblankingsync 1 of satellite receiver output and two-way analog audio signal 2,3 be connected two inputs that model is a M52065P multichannel alternative logic selector switch respectively by the CVBS composite video signal 4 of radiovisor output and two-way audio signal 5,6 are corresponding in twos.Wherein the CVBS composite video signal 4 of the CVBS videoblankingsync 1 of satellite receiver output and radiovisor output is connected the VIB of M52065P multichannel alternative logic selector switch and VIA end i.e. 1 pin and 16 pin, and ALIB and ALIA end that the left road audio signal 5 of the left road analog audio signal 2 of satellite receiver output and radiovisor output is connected M52065P respectively are 14 pin and 11 pin; ARIB and ARIA end that the right wing audio signal 6 of the right wing analog audio signal 3 of satellite receiver output and radiovisor output is connected M52065P respectively are 9 pin and 8 pin; 4 pin, 10 pin, the 15 pin ground connection of while M52065P, 13 pin connection+5V power supplys, 2 pin, 12 pin, 7 pin connection control signal; It is that 3 pin, ALO end are that 5 pin, ARO end are 1 pin, 4 pin, 3 pin that 6 pin connect connector P8 respectively that the output VO of this multichannel alternative logic selector switch M52065P holds, its 2 pin, 5 pin ground connection.

As shown in Figure 2, this multichannel alternative logic selects the output of switch to connect the small-signal processing unit; The R of satellite receiver, G, B signal directly connect the small-signal processing unit; The output of small-signal processing unit connects display unit.Wherein to be connected model on the television signal plate with capacitor C 502 by resistance R 514 be that to be L-TV end, its 3 pin is connected model on the television signal plate by resistance R 515 with capacitor C 503 be that to be R-TV end, its 1 pin connect model on the television signal plate by resistance capacitance C501 is that AV control chip 5 pin of TA1219N promptly connect V-TV and hold for AV control chip 4 pin of TA1219N for AV control chip 3 pin of TA1219N to 4 pin of connector P8.Model is that the output C-OUT1 end of the AV control chip of TA1219N is that 30 pin are 42 pin by resistance R 509 is connected integrated circuit TB1227N with capacitor C 513 input CHROMA-IN end on this television signal plate, and this signal is by resistance R 509 and resistance R 510 ground connection simultaneously; Model is that the output Y-OUT1 end of the AV control chip of TA1219N is 32 pin connect triode V205 by resistance R X17 a base stage on this television signal plate, the emitter of this triode V205 is 45 pin by the input COMPOSITE-VIDEO-IN end that capacitor C 218 connects integrated circuit TB1227N, the grounded collector of this triode V205; This signal is by resistance R X17 and resistance R 216 ground connection simultaneously; The R signal of satellite receiver output connect model be the TB1227N integrated circuit the ANALOG-R-IN end promptly the G signal of 23 pin, satellite receiver output connect model be the TB1227N integrated circuit the ANALOG-G-IN end promptly the B signal of 24 pin, satellite receiver output connect i.e. 25 pin of ANALOG-B-IN end that model is the TB1227N integrated circuit, the satellite receiver YS signal of following R, G, B signal connects i.e. 22 pin of ANALOG-YS/YM end that model is the TB1227N integrated circuit simultaneously.B-OUT, the G-UOT of the integrated circuit TB1227N of this small-signal processing unit, R-OUT end i.e. 12 pin, 13 pin, the 14 pin display that is connected to the back level shows.

During use, because M52065P is the logic selector switch of multichannel alternative, it connects the videoblankingsync CVBS of satellite reception and the videoblankingsync and the two-way audio signal of two-way audio signal and television set reception; When the user selects to see satellite-signal, the small-signal that above-mentioned selector switch sends the signal of satellite to television set is handled and is extracted a row drive signal and the processing audio signal that shows among the large scale integrated circuit TB1227N, and R, G, the B signal of satellite receiver output simultaneously is directly inputted to small-signal to be handled among the large scale integrated circuit TB1227N; Then above-mentioned signal being sent to display unit shows; When the user selects to see TV signal, the small-signal that above-mentioned selector switch sends the signal of TV to television set is handled and is extracted the row drive signal, processing audio signal and the computing that show among the large scale integrated circuit TB1227N and produce TV R, G, B signal, then above-mentioned signal is sent to display unit and shows.Realized that TV signal receives and the reception of satellite-signal.

In selecting satellite output, the satellite-signal direct coding becomes the TV signal of RGB component to drive the picture tube displayed image, avoided the picture intelligence quality that simulation process is brought in the digital satellite signal processing procedure to reduce greatly, realized digital processing procedure, make clear image, beautiful, level is distinct; Simultaneously, utilize the composite video signal of satellite coding in television set, to extract a row drive signal of demonstration, reduced way required when the satellite/terrestrial TV switches, can finish the selection of image and sound accompaniment with a logic selector switch and export, reduced cost.Can realize simultaneously the AV output of satellite programming, be beneficial to that the user records or connect display device in addition.

Claims (2)

1. color television set that has satellite receiving function, comprise satellite receiver, radiovisor and the television set small-signal processing unit (A1) that mainly constitutes by integrated circuit (TB1227N), it is characterized in that: by the videoblankingsync (1) and the two-way analog audio signal (2 of satellite receiver output, 3) with by the composite video signal (4) and the two-way audio signal (5 of radiovisor output, 6) correspondence connects two inputs of multichannel alternative logic selector switch (M52065P) respectively in twos, and the output of this switch connects the small-signal processing unit; The R of satellite receiver, G, B signal directly connect the small-signal processing unit; The output of small-signal processing unit connects display unit.

2. according to the claim 1 described color television set that has satellite receiving function, it is characterized in that: the multichannel alternative logic selector switch that the satellite of this color television set or TV are selected adopts the M52065P type, an input that is connected respectively to multichannel alternative logic selector switch (M52065P) by the videoblankingsync (1) and the two-way analog audio signal (2,3) of satellite receiver output; Composite video signal (4) and corresponding another input that adopts multichannel alternative logic selector switch (M52065P) that is connected respectively to of two-way audio signal (5,6) by radiovisor output with satellite-signal; Multichannel alternative logic selector switch (M52065P) output connects the input (T-TV, R-TV, V-TV) of AV control chip (TA1219N) on the television signal plate, and the output of this control chip (Y-OUT1, C-OUT1) connects the input (COMPOSITE-VIDEO-IN, CHROMA-IN) of the integrated circuit (TB1227N) of small-signal processing unit; The input (ANALOG-YS/YM, ANALOG-R-IN, ANALOG-G-IN, ANALOG-B-IN) of YS, R, G, B signal and the integrated circuit that is connected the small-signal processing unit (TB1227N) of satellite receiver output, the output of the integrated circuit of this small-signal processing unit (TB1227N) connects display unit.