CN2872409Y

CN2872409Y - Projector with double master

Info

Publication number: CN2872409Y
Application number: CN 200620100977
Authority: CN
Inventors: 孙曙敏
Original assignee: NINGBO GQY VIDEO IT CO Ltd
Current assignee: NINGBO GQY VIDEO IT CO Ltd
Priority date: 2006-02-14
Filing date: 2006-02-14
Publication date: 2007-02-21
Anticipated expiration: 2016-02-14

Abstract

The utility model discloses a double-chip projecting device, including a first projector and a second projector with the same structure. The projector is equipped with a control interface circuit, a input interface circuit, a DVI output interface circuit and a signal processing circuit. The input interface circuit is equipped with a DVI signal input interface circuit. The utility model is characterized by that: a signal format conversion circuit of output standard DVI signal is equipped behind the input interface circuit; the signal format conversion circuit is connected with the signal processing circuit and the DVI output interface circuit by a DVI digital signal distribution circuit respectively; a signal input line is directly connected with the input interface circuit of the first projector; the DVI output interface circuit of the first projector and the DVI signal input interface circuit of the second projector is connected with each other through the DVI signal line. The utility model could solve the problems of the traditional art. When switch over different input signals, only operate the projector connecting with the signal line is enough.

Description

A kind of two-shipper core projection arrangement

Technical field

The utility model relates to a kind of projection arrangement, especially relates to a kind of two-shipper core projection arrangement.

Background technology

Existing two-shipper core projection arrangement as shown in Figure 1, it comprises two projectors, for the signal that makes the two-shipper core can insert and project on the large-size screen monitors simultaneously, usually on signal input line, use signal to insert divider, input signal is divided into identical two paths of signals, is input to the projector of each platform independent more respectively.Though the implementation procedure of this method is simple, but there is certain drawback in actual applications, specific as follows: when input resolution higher signal (as analog video, analog rgb), signal differences such as signal lag, streaking usually occur through behind the divider, thereby has influenced the quality that image shows; When the kind of input signal increases, the also corresponding increase of the quantity of divider, thus increased the financial cost of total system; When wherein a projector showed its built-in signal, an other projector can't show identical content; When dissimilar input signals switches mutually, need operate respectively two projectors, thereby reduce the operability of system.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of can perfect realize the two-shipper Presentation Function at above-mentioned prior art present situation, and have the operability of reality and economy with two-shipper core projection arrangement.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of two-shipper core projection arrangement, comprise two first projector and second projectors that structure is identical, described projector is provided with control interface circuit, input interface circuit, DVI output interface circuit and signal processing circuit, described input interface circuit is provided with the DVI signal input interface circuit, be provided with the signal format change-over circuit of outputting standard DVI signal behind the described input interface circuit, described signal format change-over circuit is connected with described DVI output interface circuit with described signal processing circuit respectively by DVI digital signal distributor circuit, signal input line directly is connected with the input interface circuit of first projector, and the DVI output interface circuit of described first projector and the DVI signal input interface circuit of described second projector interconnect by the DVI signal wire.

Described signal format change-over circuit is made up of Pixework PW family chip and peripheral circuit, described input interface circuit comprises the Video signal circuit, the RGB1 signal circuit, RGB2 signal circuit and DVI signal input interface circuit, described Video signal circuit is connected with described signal format change-over circuit with Video signal deinterlacing circuit by Video signal decoding and D/A converting circuit, described RGB1 signal circuit is connected with described signal format change-over circuit by a commutation circuit with described RGB2 signal circuit, described DVI signal input interface circuit directly is connected with described signal format change-over circuit, also is connected with the Flash storer on the described signal format change-over circuit.

Described Video signal decoding and D/A converting circuit, described Video signal deinterlacing circuit, described commutation circuit and described Flash storer are any circuit of identical function of the prior art.

Compared with prior art, advantage of the present utility model is to have solved the existing problem of conventional art, increase a signal format change-over circuit therein on the tablet of a projector, delivery outlet is digital signal (meeting the DVI signal standards), and the signal of this delivery outlet output is consistent with the signal that this movement shows all the time; Therefore when realizing the Presentation Function of projector's two-shipper core, the signal of no matter importing is video, RGB or DVI, as long as will be wherein the output terminal of a projector be connected with the DVI input end of another movement with a DVI line, signal classification is as required switched and is got final product again; Pixework PW family chip possesses superpower signal handling capacity, mainly comprises brightness, contrast, color and image mosaic adjustment function, and output port is the DIV signal of standard simultaneously; The utility model has been avoided the shortcoming of conventional art, has following advantage:

1, because the signal of transmission all is converted into digital signal, so when picture overlapping, guaranteed the quality of visual demonstration;

2, do not need to use divider owing in the operating process, thereby improved the operability of system, reduced the financial cost of system;

3, the display speed of two movements remains synchronously, and the displaying contents unanimity;

4, when projector's soft-off (being that control enclosure does not cut off the power supply), the signal of this digital output is still consistent with the signal of input end, and the phase place of image can not change along with the variation of input signal.

5, when switching different input signals, only need operate getting final product to a projector that wherein links to each other with signal wire.

Description of drawings

Fig. 1 is that traditional double movement signal inserts and the processing mode synoptic diagram;

Fig. 2 inserts and the processing mode synoptic diagram for the two-shipper core signal that is adopted in the utility model;

Fig. 3 is the utility model line unit functional block diagram;

Fig. 4 is the functional block diagram of signal format conversion circuit.

Embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

As shown in the figure, a kind of two-shipper core projection arrangement, comprise two first projector 100 and second projectors 200 that structure is identical, projector 100,200 are provided with control interface circuit 1, input interface circuit 2, DVI output interface circuit 3, signal processing circuit 4 and signal format change-over circuit 5, input interface circuit 2 comprises Video signal circuit 21, RGB1 signal circuit 22, RGB2 signal circuit 23 and DVI signal input interface circuit 24, signal format change-over circuit 5 is made up of Pixework PW family chip and peripheral circuit, Video signal circuit 21 is connected with signal format change-over circuit 5 with Video signal deinterlacing circuit 26 by Video signal decoding and D/A converting circuit 25, RGB1 signal circuit 22 is connected with signal format change-over circuit 5 by a commutation circuit 27 with RGB2 signal circuit 23, DVI signal input interface circuit 24 directly is connected with signal format change-over circuit 5, also be connected with Flash storer 28 on the signal format change-over circuit 5, Video signal decoding and D/A converting circuit 25, Video signal deinterlacing circuit 26, commutation circuit 27 and Flash storer 28 are any circuit of identical function of the prior art, signal format change-over circuit 5 outputting standard DVI signals, be connected with DVI output interface circuit 3 with signal processing circuit 4 respectively by DVI digital signal distributor circuit 6, the DVI output interface circuit 3 of first projector 100 and the DVI signal input interface circuit 24 of second projector interconnect by the DVI signal wire.

In the foregoing description, the DVI full name is Digital Visual Interface, it is to form the interface standard that DDWG (Digital Display Working Group, numeral show working group) releases jointly by Silicon Image, Intel (Intel), Compaq (Compaq), IBM, HP (Hewlett-Packard), NEC, Fujitsu companies such as (Fujitsu) in 1999.It is the PanalLink interfacing based on Silicon Image company, and conduct is electrically connected substantially based on TMDS (TransitionMinimized Differential Signaling, transition minimized differential signaling) electronic protocol.TMDS is a kind of differential signal mechanism, pixel data can be encoded, and by transmission connected in series.The digital signal that video card produces sends to receiver by the TMDS passage by transmitter after according to the TMDS protocol code, gives digital distance scope through decoding.A DVI display system comprises a forwarder and a receiver.Forwarder is the source of signal, can in build in the video card chip, also can appear on the video card PCB with the form of additional chips; Receiver then is a circuit on the display, and it can accept digital signal, and with its decoding and be delivered in the digital display circuit, by the two, the signal that video card sends becomes the image on the display.

Claims

1, a kind of two-shipper core projection arrangement, comprise two first projector and second projectors that structure is identical, described projector is provided with control interface circuit, input interface circuit, DVI output interface circuit and signal processing circuit, described input interface circuit is provided with the DVI signal input interface, it is characterized in that being provided with behind the described input interface circuit signal format change-over circuit of outputting standard DVI signal, described signal format change-over circuit is connected with described DVI output interface circuit with described signal processing circuit respectively by DVI digital signal distributor circuit, signal input line directly is connected with the input interface circuit of first projector, and the DVI output interface circuit of described first projector and the DVI signal input interface of described second projector interconnect by the DVI signal wire.

2, a kind of two-shipper core projection arrangement as claimed in claim 1, it is characterized in that described signal format change-over circuit is made up of Pixework PW family chip and peripheral circuit, described input interface circuit comprises the Video signal circuit, the RGB1 signal circuit, RGB2 signal circuit and DVI digital signal interface circuit, described Video signal circuit is connected with described signal format change-over circuit with Video signal deinterlacing circuit by Video signal decoding and D/A converting circuit, described RGB1 signal circuit is connected with described signal format change-over circuit by a commutation circuit with described RGB2 signal circuit, described DVI digital signal interface circuit directly is connected with described signal format change-over circuit, also is connected with the Flash storer on the described signal format change-over circuit.

3, a kind of two-shipper core projection arrangement as claimed in claim 1 is characterized in that described Video signal decoding and D/A converting circuit, described Video signal deinterlacing circuit, described commutation circuit and described Flash storer are any circuit of identical function of the prior art.