CN1578455A - Meeting television terminal capable of simultaneously supporting multiple protocol and method thereof - Google Patents
Meeting television terminal capable of simultaneously supporting multiple protocol and method thereof Download PDFInfo
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- CN1578455A CN1578455A CN 03132247 CN03132247A CN1578455A CN 1578455 A CN1578455 A CN 1578455A CN 03132247 CN03132247 CN 03132247 CN 03132247 A CN03132247 A CN 03132247A CN 1578455 A CN1578455 A CN 1578455A
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Abstract
The present invention discloses meeting TV terminal and method backing up several protocols in video communication field. The meeting TV terminal includes three CPU modules, two video interface modules, audio DSP module, audio interface module, control module and flash memory module, as well as E1 line or ISDN line interface module, Ethernet interface module and other protocol interface module. The interface modules are connected with the three CPU modules via PCI bus, so that the modules are connected together via PCI standard bus for cooperation. The meeting TV terminal may be used in different line environments effectively with low cost and easy maintenance.
Description
Technical field
The present invention relates to the video communication field, especially relate to the video conference terminal in the video communications system.
Background technology
Along with people to exchanging the increasing of demand, for the requirement of communication form also more and more widely, video communications system obtains development rapidly in such demand.At present, all kinds of TV conference system all have a wide range of applications in every field such as government, education, enterprises.Because in current TV conference system, provide the manufacturer of equipment numerous, employed communications protocol is also had nothing in common with each other, and the difference of the circuit of user's use, thereby cause can't realizing between the different line users interconnecting.A ubiquitous fact is now, and the general actual conditions according to oneself of user might be selected E1 special line, isdn line or IP circuit or the like.Because the above-mentioned different video conferencing agreement that circuit adopted is different fully, need use H.320 agreement such as the E1 special line, and the IP circuit needs to use H.323 agreement, like this, video conference terminal needs different protocol software kernels to support, realizes and various protocols can not be integrated in the video conference terminal in the prior art.Under these circumstances, if a certain user wants to utilize the video conference terminal of the video conference terminal of IP circuit (adopting H.323 agreement) and E1 special line (the adopting H.320 agreement) TV of holding a meeting of coming together, must carry out protocol conversion by the MCU in the TV conference system (multipoint conference control unit).Therefore, if user's MCU does not possess protocol conversion function, the video conference terminal of two kinds of different agreements has no idea to interconnect.
Summary of the invention
The objective of the invention is to overcome the problem that the video conference terminal of the multiple different agreement that exists in the prior art can't interconnect, in a video conference terminal, support various protocols to provide a kind of simultaneously, the video conference terminal that it can both effectively be used under different circuit environment.
For achieving the above object, the present invention has constructed a kind of video conference terminal of supporting various protocols, comprises three identical CPU module, two video interface modules, audio digital signal processor (DSP) module, audio interface module, control module and flash memory modules; Described two video interface modules are connected on described first CPU module and described second CPU module respectively, finish the input and output of two-path video; Described audio frequency DSP module is connected to described the 3rd CPU module, is connected with described audio interface module simultaneously, finishes the processing of audio frequency, the function of input and output; Three CPU module are connected on a peripheral device interconnection (PCI) bus, collaborative work, described control module and described flash memory module are connected on the pci bus by expansion input and output (XIO) bus of central processing unit support simultaneously, finish the controlled function of internal circuit, and some interfaces of realizing the outside are controlled, it is characterized in that: also comprise the E1 circuit, V.35 circuit or isdn line interface module, ethernet interface module and agreement LIM H.324, above-mentioned interface module links to each other with described three CPU module by pci bus, thereby make each module link together, realize mutual cooperating by the PCI STD bus.
The invention allows for a kind of method of supporting the various protocols video conference terminal, it is characterized in that, may further comprise the steps:
Step 1: the pairing many locking terminals protocol procedure of various protocols is stored in the flash memory module of video conference terminal, and in described flash memory module, distributes fixing address space respectively, flag bit is set;
Step 2: video conference terminal powers on, the described flag bit of boot automatic inspection, if when described flag bit is a set point, described boot is a kind of terminal protocol program of guiding automatically; When if described flag bit is the another one set point, described boot guides another kind of terminal protocol program automatically; If described flag bit is defined as other set points, then can expand to H.324 protocol procedure;
Step 3: described flag bit is changed in the selection at the interface by each protocol software, select H.323 protocol procedure, H.320 protocol procedure or H.324 protocol procedure restart.
Utilize video conference terminal of the present invention and method thereof, the user can realize various protocols simultaneously as required on a video conference terminal, thereby make same video conference terminal support various protocols simultaneously, be easy to realize interconnecting, and can avoid buying the TV conference system that different video conference terminals is supported different physical circuits, safeguard to save cost and to be convenient to.
Description of drawings
Fig. 1 is the video conference terminal structure chart of support various protocols of the present invention.
Fig. 2 is the video conference terminal method flow diagram of support various protocols of the present invention.
Embodiment
The invention will be further described below in conjunction with embodiment:
In the video conference terminal field, realized in a video conference terminal, supporting simultaneously the agreement of E1 circuit (H.320 agreement), IP circuit (H.323 agreement) and other types circuit by method of the present invention.
Be that example is specifically described with E1 circuit (H.320 agreement) and IP circuit (H.323 agreement) below.Because the circuit function module major part that this different agreement will realize is identical, all need video input and output module, audio frequency input and output module, CPU module, difference between them is that H.320 agreement needs a line interface circuit plate in addition, and H.323 agreement needs an ethernet interface module.Like this, shown in accompanying drawing 1, these identical with different modules all are integrated on the circuit board terminal, this two kinds of hardware that agreement is essential have been realized, wherein select for use the E1 interface circuit to be connected on the pci bus, and do not select the interface circuit (places different) of ISDN for use with accompanying drawing 1 by FPGA (field programmable logic array).And support the terminal softwares of these two kinds of circuits to leave two fixed positions in the flash memory module respectively in two covers, the address space that distributes 5 Mbytes respectively, and a fixed address is deposited 16 bit flag positions in flash memory module, change this flag bit by the selection at interface like this, select H323 or H320 protocol procedure to start.Like this, these two kinds of popular protocols in a video conference terminal, have just been realized.
In the utilization of video conference terminal in reality, in the time of switching various protocols, then can utilize the configurable advantage in video conference terminal interface, operate by friendly interface by the user, select the protocol procedure that starts next time.At this moment, the interface can be according to requirement of client, and the flag bit of flash memory module is modified to the pairing value of protocol procedure.Start-up routine starts the different agreement program according to this flag bit next time when starting like this.
Fig. 1 shows the video conference terminal structure chart of the support various protocols of the present invention's structure, in the figure, comprise three identical central processing units (CPU1, CPU2, CPU3) module, two video interface modules (being responsible for the input and output of video), an audio frequency DSP module (being responsible for the encoding and decoding of audio frequency), an audio interface module (being responsible for the input and output of audio frequency), a control module and a flash memory module (being responsible for storing software).These modules are all prerequisite basic modules of the video conference terminal of variety of protocol.The annexation of each module is as follows: two identical video interface modules are connected on respectively on first central processing unit (CPU1) and two processor modules of second central processing unit (CPU2), finish the input and output of two-path video; Audio frequency DSP module is connected on the 3rd central processing unit (CPU3) module, and the audio interface module links to each other with audio frequency DSP module simultaneously, finishes the processing of audio frequency, the function of input and output; Three CPU modules are connected collaborative work on the pci bus, and a control module and a flash memory module are connected on the pci bus by the XIO bus simultaneously, finish the controlled function of internal circuit, and realize some outside interface controls.The video conference terminal that the present invention constructed has also comprised E1 circuit or isdn line interface module (H.320 protocol module) and ethernet interface module (H.323 protocol module), the circuit module of these two kinds of different agreements all links to each other with the CPU module by pci bus, each module links together by the pci bus standard like this, can realize mutual cooperating.In fact, under the interface module situation that has other agreements, also can be implemented in collaborative work in the same video conference terminal according to same mode.
Realize that the multi-protocols video conference terminal also needs the support of software.The software of video conference terminal mainly is stored in the flash memory module in the terminal hardware circuit.Video conference terminal is when just powering on, and the internal hardware circuit can download to program stored in the flash memory module in the plug-in internal memory of CPU module automatically according to boot, and program just can have been moved in CPU module like this.Since the flash memory module capacity of video conference terminal be bigger, therefore the software of different agreement can be stored in the different address spaces of a flash memory module, simultaneously, in a sector address of flash memory module, there is one and accounts for 16 bit flag positions (according to the difference of flash memory module working method, can select to account for 8 bits, account for 32 bit flag positions), boot can be come channeling conduct variety of protocol software according to the different value of flag bit like this.The present invention has proposed a kind of method of supporting the multi-protocols video conference terminal according to this thinking, and this method mainly may further comprise the steps:
Step 1: various protocols is write corresponding many locking terminals program respectively, and, in flash memory module, distribute fixing address space to store respectively by flash memory module being sent the order procedure stores that these are different in a flash memory module of video conference terminal hardware.Specifically, if program H.320 has 4 Mbytes, program H.323 has 5 Mbytes, H.320 program can be stored in 1,000,000 to 5,000,000 space of flash memory module, and H.323 program is stored in 5,000,000 to 10,000,000 space;
Step 2: when hardware just begins to power on, this flag bit of boot automatic inspection, when if this accounts for 16 bit flag positions and is the value that sets, start-up routine is a kind of protocol procedure of guiding automatically, when flag bit was the value of another one setting, start-up routine guided the program of another kind of agreement; This flag bit is defined as other value, can expand other protocol procedure;
Step 3: this flag bit is changed in the selection at the interface by each protocol software, select H.323 or H.320 protocol procedure restart.
Claims (4)
1, a kind of video conference terminal of supporting various protocols comprises three identical CPU module, two video interface modules, audio digital signal processor module, audio interface module, control module and flash memory modules; Described two video interface modules are connected on described first CPU module and described second CPU module respectively, finish the input and output of two-path video; Described audio digital signal processor module is connected to described the 3rd CPU module, is connected with described audio interface module simultaneously, finishes the processing of audio frequency, the function of input and output; Three CPU module are connected collaborative work on the peripheral device interconnection bus; Described control module and described flash memory module are connected on the peripheral device interconnection bus by the expansion input/output bus of central processing unit support, finish the controlled function of internal circuit, and some interfaces of realizing the outside are controlled, it is characterized in that: also comprise the E1 circuit, V.35 circuit or isdn line interface module, ethernet interface module and agreement LIM H.324, above-mentioned interface module links to each other with described three CPU module by the peripheral device interconnection bus, thereby make each module link together, realize mutual cooperating by the peripheral device interconnection bus.
2, the video conference terminal of support various protocols according to claim 1 is characterized in that, described E1 circuit or isdn line interface module are supported H.320 agreement, and described ethernet interface module is supported H.323 agreement.
3, the video conference terminal of support various protocols according to claim 1 is characterized in that, described E1 link tester is crossed field programmable logic array and is connected to described peripheral device interconnection bus.
4, a kind of method of supporting the various protocols video conference terminal is characterized in that, may further comprise the steps:
Step 1: the pairing many locking terminals protocol procedure of various protocols is stored in the flash memory module of video conference terminal, and in described flash memory module, distributes fixing address space respectively, flag bit is set;
Step 2: video conference terminal powers on, the described flag bit of boot automatic inspection, if when described flag bit is a set point, described boot is a kind of terminal protocol program of guiding automatically; When if described flag bit is the another one set point, described boot guides another kind of terminal protocol program automatically; If described flag bit is defined as other set points, then can expand to H.324 protocol procedure;
Step 3: described flag bit is changed in the selection at the interface by each protocol software, select H.323 protocol procedure, H.320 protocol procedure or H.324 protocol procedure restart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132247 CN1260973C (en) | 2003-07-28 | 2003-07-28 | Meeting television terminal capable of simultaneously supporting multiple protocol and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03132247 CN1260973C (en) | 2003-07-28 | 2003-07-28 | Meeting television terminal capable of simultaneously supporting multiple protocol and method thereof |
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| Publication Number | Publication Date |
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| CN1578455A true CN1578455A (en) | 2005-02-09 |
| CN1260973C CN1260973C (en) | 2006-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03132247 Expired - Fee Related CN1260973C (en) | 2003-07-28 | 2003-07-28 | Meeting television terminal capable of simultaneously supporting multiple protocol and method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340547B (en) * | 2007-07-04 | 2010-06-02 | 广达电脑股份有限公司 | 3 side video conference system |
| US7835295B2 (en) | 2005-07-19 | 2010-11-16 | Rosemount Inc. | Interface module with power over Ethernet function |
| US7844365B2 (en) | 2000-05-12 | 2010-11-30 | Rosemount Inc. | Field-mounted process device |
| CN102006452A (en) * | 2010-11-24 | 2011-04-06 | 中兴通讯股份有限公司 | Method for monitoring terminal through IP network and MCU |
| CN102244765A (en) * | 2011-07-05 | 2011-11-16 | 华平信息技术股份有限公司 | Multi-protocol-supported conference terminal interaction system and method |
| CN104735034A (en) * | 2013-12-24 | 2015-06-24 | 中国移动通信集团公司 | Media stream transmission method, device and system |
| US9634858B2 (en) | 2005-07-20 | 2017-04-25 | Rosemount Inc. | Field device with power over Ethernet |
-
2003
- 2003-07-28 CN CN 03132247 patent/CN1260973C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7844365B2 (en) | 2000-05-12 | 2010-11-30 | Rosemount Inc. | Field-mounted process device |
| US7835295B2 (en) | 2005-07-19 | 2010-11-16 | Rosemount Inc. | Interface module with power over Ethernet function |
| US9634858B2 (en) | 2005-07-20 | 2017-04-25 | Rosemount Inc. | Field device with power over Ethernet |
| CN101340547B (en) * | 2007-07-04 | 2010-06-02 | 广达电脑股份有限公司 | 3 side video conference system |
| CN102006452A (en) * | 2010-11-24 | 2011-04-06 | 中兴通讯股份有限公司 | Method for monitoring terminal through IP network and MCU |
| CN102244765A (en) * | 2011-07-05 | 2011-11-16 | 华平信息技术股份有限公司 | Multi-protocol-supported conference terminal interaction system and method |
| CN104735034A (en) * | 2013-12-24 | 2015-06-24 | 中国移动通信集团公司 | Media stream transmission method, device and system |
| CN104735034B (en) * | 2013-12-24 | 2018-06-26 | 中国移动通信集团公司 | Transmission method, the apparatus and system of Media Stream |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1260973C (en) | 2006-06-21 |
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