CN2831653Y

CN2831653Y - Unit external bus controller

Info

Publication number: CN2831653Y
Application number: CN 200520088639
Authority: CN
Inventors: 李因东; 秦明亮
Original assignee: SAIKEXINWEI TECH DEVELOPMENT Co Ltd JINAN
Current assignee: SAIKEXINWEI TECH DEVELOPMENT Co Ltd JINAN
Priority date: 2005-11-02
Filing date: 2005-11-02
Publication date: 2006-10-25
Anticipated expiration: 2015-11-02

Abstract

The utility model discloses a unit external bus controller which belongs to the switch of bus control and video frequency in a building intercommunication system and mainly solves the problems of the use and the distribution of network audio resources and network video resources. The utility model is characterized in that the unit external bus controller comprises a communication circuit, a storage unit, an SCM, a video switching circuit and a corresponding power supply circuit, wherein the communication circuit, the storage unit and the video switching circuit are respectively connected with the SCM, and the power supply circuit which adopts regulated power supplies of +12V and +5V is connected with a controller; the communication circuit carries out communication with other equipment on an outer bus through a bus, and the video switching circuit is connected with video signals of unit external equipment, such as a manager machine and a unit doorway machine to allocate the video signals. The utility model can realize the switch of video from the doorway machines to the manager machine and reasonably allocate the audio of the entire network. The unit external bus controller is used in a large-size building intercommunication system.

Description

Unit external bus controller

Technical field:

The utility model relates to total line traffic control and the video switch in the building conversational system.It switches the video of each doorway machine to keeper's machine, simultaneously to the audio frequency of the whole network of reasonable distribution.

Background technology:

In large-scale building conversational system, the transmission requirement of Internet video can not have branch, so keeper's machine is if see each doorway machine or must provide independent video frequency channel by a switch during video of total doorway machine; In addition, the audio frequency operating position of network is comparatively complicated, requires the calling unit in not influence the audio frequency use of unit outer network; When the outer audio frequency of network used the voice-frequency channel of certain unit, the audio frequency in the unit was temporarily occupied; Audio frequency outside the unit also might be used simultaneously in many ways.For avoiding producing the confusion of conversation, in switch supplemental audio controlled function, the audio frequency in the network is controlled, avoid occurring audio conflict.Prior art can not satisfy this requirement.

Summary of the invention:

The purpose of this utility model provides a kind of unit external bus controller, mainly is at large-scale sub-district building visitor system, solves the use and the assignment problem of network audio and Internet video resource.

The technical solution of the utility model is: this unit external bus controller is characterized in that it comprises communicating circuit, memory cell, single-chip microcomputer, video switch circuit and corresponding power circuit; Communicating circuit, memory cell, video switch circuit connect single-chip microcomputer respectively, and power circuit employing+12V is with+5V stabilized voltage power supply and be connected controller; Communicating circuit carries out communication by other equipment on bus and the external bus; The vision signal of video switch circuit linkage unit external equipment such as keeper's machine, unit doorway machine is distributed vision signal.

Register the video area code of each video terminal by keeper's machine, each video area code is corresponding with corresponding video terminal, and control doorway machine and total doorway machine are to the video switch of keeper's machine; When doorway machine and total doorway machine call manager person machine or certain doorway machine were monitored by keeper's machine, unit external bus controller was just opened corresponding terminal, realizes the switching of vision signal.

The audio resource of the whole network of Control Allocation, the audio frequency operating position of the keeper's machine in the record network, total doorway machine, unit doorway machine and indoor set, the reasonable distribution audio resource returns the audio frequency occupied information in good time, prevents MPTY.

Power circuit of the present utility model provides for this equipment and uses+12V and+the 5V stabilized voltage power supply; Other equipment carry out communication in communicating circuit realization and the system, gather the use information of Voice ﹠ Video; Memory circuit is preserved the various information of video registration; Video switch circuit is realized the action of video switch; Communication acquisition to information and the change action of video all have single-chip microcomputer to handle and control.

The beneficial effects of the utility model are:

1), owing to be provided with the networked video switch, its audio frequency, video resource in can the whole subzone network of Control Allocation, switch unit doorway machine and total doorway machine are to the vision signal of keeper's machine.

2), the audio resource of the whole network of Control Allocation, the audio frequency operating position reasonable distribution audio resource of the keeper's machine in the record network, total doorway machine, unit doorway machine and indoor set returns audio frequency in good time and takies busy information, prevents MPTY.

3), the control doorway machine is to the video switch of keeper's machine; Register the video area code of each video terminal by keeper's machine, each video area code is corresponding with corresponding video terminal, when doorway machine call manager person machine or certain doorway machine were monitored by keeper's machine, controller was just opened corresponding terminal, realized the switching of vision signal.

Description of drawings:

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

Fig. 1 is a theory diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model;

Fig. 3 application system winding diagram of the present utility model.

Concrete execution mode:

As Fig. 1, Fig. 2, shown in Figure 3.

This unit external bus controller SW6228, it comprises communicating circuit, memory cell, single-chip microcomputer, video switch circuit and corresponding power circuit; Communicating circuit, memory cell, video switch circuit connect single-chip microcomputer respectively.Wherein, power circuit provide for this equipment to use+12V and+the 5V stabilized voltage power supply.Other equipment carry out communication in communicating circuit realization and the system, by the use information of video line and bus collection Voice ﹠ Video.Memory cell is preserved the various information of video registration.Video switch circuit is realized the action of video switch.Communication acquisition to information and the change action of video all have single-chip microcomputer to handle and control.

External bus controller SW6228 at first carries out the video setting by keeper's machine to each video terminal.All video terminals can be assigned in 8 video sections, and the video of this section is fixing to be exported from some video terminal.In EEPROM, is to access required information when carrying out video distribution with these information stores.Doorway machine and its corresponding section quantity can be provided with as required.

Unit external bus controller directly is connected as the J1 terminal among Fig. 2 with external bus, pass to single-chip microcomputer by communicating circuit, the information of transmitting on external bus controller of the present utility model can all receive, single-chip microcomputer is handled the information that receives, record and use audio frequency, video information, operating position to audio frequency is made analysis, make audio frequency carve the situation that does not occur using simultaneously in many ways at a time, using audio frequency as two terminals, and when having the opposing party also will apply for using audio frequency, unit external bus controller returns a busy information for this terminal, thereby avoids occurring the conflict on the circuit.

For example, according to shown in Figure 3, certain moment keeper's machine and a unit doorway machine 1 are being conversed, using simultaneously video, this moment, doorway machine 2 was want to set up conversation with supervisor, unit external bus controller returns busy information one time according to the audio frequency and video operating position that writes down this moment send the request of setting up conversation when doorway machine 2 after, tells that doorway machine 2 communications this moment are busy.

If unexpected, circuit has occurred unusually, has the audio frequency of a certain circuit not discharge, and external bus controller meeting self-clocking can discharge after 90 seconds automatically.

The switching of video is concrete, and to implement be that action by relay realizes, it has public terminal video terminal J3 as shown in Figure 2, the supervisor video can be connected on this public terminal, also can distribute a section for specially keeper's machine, as the some terminals of J2, J5 among Fig. 1.Independently to be connected on the video distributor be example in the video section as one respectively with keeper's machine and two doorway machine, be connected on the section 1 as keeper's machine, doorway machine 1 and doorway machine 2 are connected on section 4 and the section 5, when doorway machine 2 and keeper's machine foundation conversation, when using the external video in the system simultaneously, the single-chip microcomputer of unit external bus controller is according to the log-on message that is stored among the EEPROM, driving relay 1 and relay 5 moves simultaneously, the video line of correspondence is coupled together, realize the video distribution of system.

The part that the utility model does not describe in detail is a prior art.

Claims

1, external bus controller in unit is characterized in that, it comprises communicating circuit, memory cell, single-chip microcomputer, video switch circuit and corresponding power circuit; Communicating circuit, memory cell, video switch circuit connect single-chip microcomputer respectively, and power circuit employing+12V is with+5V stabilized voltage power supply and be connected controller; Communicating circuit carries out communication by other equipment on bus and the external bus; The vision signal of video switch circuit linkage unit external equipment such as keeper's machine, unit doorway machine is distributed vision signal.

2, unit according to claim 1 external bus controller, it is characterized in that, register the video area code of each video terminal by keeper's machine, each video area code is corresponding with corresponding video terminal, and control doorway machine and total doorway machine are to the video switch of keeper's machine; When doorway machine and total doorway machine call manager person machine or certain doorway machine were monitored by keeper's machine, unit external bus controller was just opened corresponding terminal, realizes the switching of vision signal.