CN2269035Y

CN2269035Y - Audio/Video switch with pluratilies of inputs and outputs for several pictures

Info

Publication number: CN2269035Y
Application number: CN 96219188
Authority: CN
Inventors: 颜森辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-23
Filing date: 1996-09-23
Publication date: 1997-11-26
Anticipated expiration: 2006-09-23

Abstract

The utility model relates to a multifunction A/V switching device which is provided with a plurality of inputs and outputs and main and auxiliary pictures. A receiving circuit receives the control signal of an infrared remote controller; a microprocessor is connected with a receiver; an electric composite switching circuit is connected with the microprocessor, an auxiliary picture demoding circuit, an auxiliary picture complex frequency signal demoding circuit, a main picture demoding circuit, and a main picture complex frequency signal demoding circuit; an auxiliary picture processing circuit is connected with an auxiliary picture circuit, the auxiliary picture complex frequency signal demoding circuit, the main picture complex frequency signal demoding circuit, and the microprocessor; a composite circuit is connected with the main picture demoding circuit and an auxiliary picture processor; a horizontally vertical composite circuit is connected with the main picture complex frequency signal demoding circuit.

Description

Multiple-input and multiple-output introne mother picture A/V multipurpose switching device shifter

The utility model relates to a kind of multiple-input and multiple-output introne mother picture A/V multipurpose switching device shifter.

Household electronic products is brought in constant renewal in, broadcasting and communication service fast development, it all is as display unit with TV that Video Recorder, video disc player, satellite receiver, cable TV, video telephone and family expenses are saved plurality of devices such as electronic still camera from damage, if use more than one equipment simultaneously, must use very inconvenience in the manual switching mode, and once can only see a picture.

Main purpose of the present utility model provides a kind of multiple-input and multiple-output introne mother picture A/V multipurpose switching device shifter, adopt microprocessor architecture, firmware control, time cut apart, structure and technology such as multiple access transmits, electron recombination switch, multiple input, PIP, reach circuit simply, cost is lower and characteristics such as the multiple output of picture.

Order of the present utility model is achieved in that a kind of multiple-input and multiple-output introne mother picture A/V multipurpose switching device shifter, and it is characterized in that: receiving circuit is accepted the control signal of infrared remote controller; Microprocessor connects receiver, and its input receives ultrasonic waves, infrared detection signal; The electron recombination switching circuit connects microprocessor, and the input of electron recombination switching circuit is accepted the signal output of Video Recorder, video disc player, satellite receiver, cable TV, video telephone; The sprite decoding circuit connects the electron recombination switching circuit; Sprite comlex-frequency singnal decoding circuit connects the electron recombination switching circuit; The mother picture decoding circuit connects the electron recombination switching circuit; Mother picture comlex-frequency singnal decoding circuit connects the electron recombination switching circuit; Sprite treatment circuit connexon picture codec circuit, sprite comlex-frequency singnal decoding circuit, mother picture comlex-frequency singnal decoding circuit and microprocessor; Memory connexon picture processor; Combiner circuit connects mother picture decoding circuit and sprite processor; The horizontal vertical combiner circuit connects the compound frequency signal decoding circuit of mother picture.

The number of sprite can be 1,2,4,7,9.

The utility model circuit is simple, and cost is lower, and it, can be exported multi-screen simultaneously, and can import signals such as Video Recorder, video disc player, satellite receiver, cable TV, video telephone as display unit with TV, and handover operation is convenient.

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

Fig. 1 is the utility model embodiment calcspar;

Fig. 2 is the utility model embodiment TV PIP schematic diagram;

Fig. 3 is the inside calcspar of the utility model sprite processor;

Fig. 4 is the utility model electron recombination switching circuit schematic diagram;

Fig. 5 is the utility model sprite comlex-frequency singnal decoding circuit, mother picture comlex-frequency singnal decoding circuit, sprite processor and memory circuitry schematic diagram;

Fig. 6 is the utility model microprocessor and receiving circuit schematic diagram;

Fig. 7 is the utility model combiner circuit, horizontal vertical combiner circuit, coding circuit and son, mother picture decoding circuit schematic diagram.

See also Fig. 1,4,5,6,7, the utility model embodiment mainly is made up of institutes such as electron recombination switching circuit 10, sprite decoding circuit 20, sprite comlex-frequency singnal decoding circuit 25, mother picture decoding circuit 30, mother picture comlex-frequency singnal decoding circuit 35, sprite processor 40, memory 45, microprocessor 50, receiving circuit 60, combiner circuit 70, horizontal vertical combiner circuit 80 and coding circuits 90.

Receiving circuit 60 connects microprocessor 50.Microprocessor 50 connects electron recombination switching circuit 10, mother picture frequency signal decoding circuit 35 and sprite processor 40 again.Signal decoding circuit 25, mother picture decoder circuit 30 and mother draw multiple signal decoding circuit 35 frequently frequently again for electron recombination switching circuit 10 connexon picture codec circuit 20, sprite.Sprite decoding circuit 20, sprite be signal decoding circuit 25 and mother picture signal decoding circuit 35 connexon picture processors 40 frequently again frequently again.Mother picture decoder circuit 30 connects combiner circuit 70.Sprite processor 40 connects memory body 45 and combiner circuit 70.Combiner circuit 70 and horizontal vertical combiner circuit 80 connect coding circuit 90.

Receiving circuit 60 can be accepted the input of infrared remote controller, sends user's operation signal to microprocessor 50 again.Microprocessor 50 is except the control signal of accepting receiving circuit 60, and its input 51 can receive detection signals such as ultrasonic waves, infrared ray.Microprocessor 50 sends remote signal to electron recombination switching circuit 10, mother picture comlex-frequency singnal decoding circuit 35 and sprite processor 40, with the presentation mode and the order of control mother picture and sprite.The input 11 of electron recombination switching circuit 10 is accepted the signal output of Video Recorder, video disc player, satellite receiver, cable TV, picture telephone and other audio-visual devices.Electron recombination switching circuit 10 exports message to TV 100 through message output 12 according to user's selection.Electron recombination switching circuit 10 transmits mother picture decoding circuit 30 and mother picture signal decoding circuit 35 frequently again according to user's selection with the mother picture signal again, more multiple sprite signal is transmitted connexon picture codec circuit 20 and sprite comlex-frequency singnal decoding circuit 25.Mother picture decoding circuit 30 sends mother picture Y, U, V signal to combiner circuit 70.Mother picture comlex-frequency singnal decoding circuit 35 sends the level of mother picture, vertical, harmonic ringing to sprite processor 40 and microprocessor 50 and horizontal vertical combiner circuit 80.Sprite decoding circuit 20 sends several sprites Y, U, V signal to sprite processor 40.Sprite comlex-frequency singnal decoding circuit 25 sends several sprite levels, vertical, harmonic ringing to sprite processor 40.The sprite processor is with the sprite signal of sprite decoding circuit 20 and sprite comlex-frequency singnal decoding circuit 25 levels, vertical harmonic ringing, the mother picture signal of mother picture comlex-frequency singnal decoding circuit 35, the picture and selecting signal synthesis of microprocessor 50 is handled.Sprite processor 40 connected storages 45, memory 45 stores.The signal of the PIP level after sprite processor 40 is handled, vertical harmonic ringing, sprite sends combiner circuit 70 to.Combiner circuit 70 is again with mother picture signal and its synthetic coding circuit 90 that transmits.Horizontal vertical combiner circuit 80 transmits coding circuit 90 later on mother picture level, the synthetic processing of vertical harmonic ringing.Coding circuit 90 is exported to TV 100 after with the level of mother picture, vertical, harmonic ringing and other PIP signal encodings.

Electron recombination switching circuit 10 according to user's selection with multiple sprite signal according to the time cut apart be sent at interval sprite decoding circuit 20 and sprite frequency multiplexed signal separate circuit 25 with avoid channel between video signal disturb mutually.

Sprite processor 40 is with in the multiple sprite data storage what memory 45, and each sprite has an initial address, sprite processor 40 stores the data for updating of each sprite with multiple access load mode updated stored device 45 picture data.Again with general television image renewal frequency output picture.

The sprite processor is a digital signal processor, see also shown in Figure 3, it is by trapper 41, multiplexer 42, A/D converter (A/D) 43, digital image handles 44, memory 441, select color separation 46, D/A (D/A) 47, signal oscillator 48,48 ', system's control buffer 49, signal generator 491,491 ' grade is formed, sprite processor 40 main functions are with sprite signal and PIP level, vertical tuning signal sees through A/D converter 43 and makes analog-to-digital conversion process, sprite numerical digit signal is cooperated the mother picture level, vertically, harmonic ringing dwindles processing, signal after will handling again sees through digital to analog converter 47 and does the processing of numerical digit transformational analogy, has obtained sprite Y, U, V signal.

Microprocessor 50 is one 16 microprocessor, wherein is provided with read-only memory (ROM), in the firmware storage what memory (ROM) of the utility model firmware control.

See also Fig. 2, the utility model embodiment TV PIP schematic diagram.The number of the utility model sprite does not have certain limitation, can control numbers such as 1,2,4,7,9 by firmware, and its order is controlled by the user.

Claims

1, a kind of multiple-input and multiple-output introne mother picture A/V multipurpose switching device shifter, it is characterized in that: receiving circuit is accepted the control signal of infrared remote controller; Microprocessor connects receiver, and its input receives ultrasonic waves, infrared detection signal; The electron recombination switching circuit connects microprocessor, and the input of electron recombination switching circuit is accepted the signal output of Video Recorder, video disc player, satellite receiver, cable TV, video telephone; The sprite decoding circuit connects the electron recombination switching circuit; Sprite comlex-frequency singnal decoding circuit connects the electron recombination switching circuit; The mother picture decoding circuit connects the electron recombination switching circuit; Mother picture comlex-frequency singnal decoding circuit connects the electron recombination switching circuit; Sprite treatment circuit connexon picture codec circuit, sprite comlex-frequency singnal decoding circuit, mother picture comlex-frequency singnal decoding circuit and microprocessor; Memory connexon picture processor; Combiner circuit connects mother picture decoding circuit and sprite processor; The horizontal vertical combiner circuit connects the compound frequency signal decoding circuit of mother picture.

2, multiple-input and multiple-output introne mother picture A/V multipurpose switching device shifter according to claim 1, it is characterized in that: the number of sprite can be 1,2,4,7,9.