CN102685396B - Method and system for serial communication of controlled equipment in nonlinear edition system - Google Patents
Method and system for serial communication of controlled equipment in nonlinear edition system Download PDFInfo
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- CN102685396B CN102685396B CN201110066866.9A CN201110066866A CN102685396B CN 102685396 B CN102685396 B CN 102685396B CN 201110066866 A CN201110066866 A CN 201110066866A CN 102685396 B CN102685396 B CN 102685396B
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Abstract
The invention discloses a method and a system for the serial communication of controlled equipment in a nonlinear edition system, and is mainly used for the nonlinear edition system and related fields of digital media edition. The method and the system are used for solving the problem that the nonlinear edition system only can perform one-way communication with an external host through a standard serial interface protocol. In order to solve the problem, two-way information exchange between a nonlinear edition system host and the external control equipment is realized by adopting the technical means of establishing full duplex communication in interface conversion and interface control ways, and in the interface conversion part, independent control loops are provided for a two-way data communication (transmission and reception) way, and the conventional common ground wire linking way is not adopted, so that interference between two-way data in a signal exchange process is effectively avoided, and effective and efficient communication is effectively ensured when the communication of a great amount of data is required and the system is kept in a working state for a long time; and moreover, in the using process of the method or the system, a standard interface is adopted, and is universal and replaceable, so that the functions of the conventional nonlinear edition system and master control equipment can be effectively expanded.
Description
Technical field
The present invention relates to a kind of nonlinear editing system is referred to as NLE system technical field, non-linear particularly to one kind
The method and system of serial communication in editor's controlled system.
Background technology
NLE system is the most frequently used a kind of video in the fields such as current post film and TV production, Video processing, radio and television
Edit operation system, is that the various video/audio signals input carry out a/d conversion, using digital compression technology, information is stored in meter
In calculation machine hard disk, always carry out arbitrary random access memory, processing and modification in a computer, thus just completing using a computer
The work that in traditional tv later editing system, a lot of equipment such as video tape recorder, effect machine, film titler, sound console is done
Make, the emphasis of its work be exactly by the video/audio signal of simulation after digitized, be digitized processing, above in order to complete
Work, usual NLE system includes: main frame, image processing equipment, digital storage equipment, display device, simulation input/output set
The groundwork unit such as standby, wherein simulation input/outut device are primarily referred to as storage, broadcasting, the equipment of record analog video and audio,
As image capture devices such as video tape recorder, video camera, recorders, wherein NLE system controls the equipment such as video recording, shooting, realizes data
Collection and playing, since it is considered that the communications protocol unified with primary processor, therefore generally using meeting industry communication standard
Serial port communicating protocol (rs232 communications protocol) interacts, and is simultaneously based on the periphery of same communications protocol (rs422 communications protocol)
Processing equipment is also common.Such as vtr (video tape recorder magnetic tape video recorder), (one kind is used for regarding protools
The workstation software system of Audio Processing), pyramix (broadcast level audio workstation) etc. all follow this communication protocol.Exactly base
In this standard, NLE system could complete to control and communication function between different ancillary equipment.At present, non-volume passes through serial ports
The mode of protocol integrated test system vtr type equipment is relatively conventional and is also widely used in broadcasting and TV video field, but is because setting
The standby feature of itself, current communication modes are usually unidirectional, mainly edited and released out instruction peripheral hardware is effectively controlled by non-
System, needed uploads and downloads work, when actively passing peripheral device information back main frame according to actual needs and can be complete
When becoming some simple operationss, but, existing serial communication mode would become hard to meet this requirement it is therefore desirable to design full duplex
Communication mode, realizes the serial ports switching of rs232 communications protocol and rs422 communications protocol, realizes the real-time of main frame and ancillary equipment
Information exchanges and gathers.
Content of the invention
In order to reach the purpose of NLE system effective control serial peripheral equipment, the present invention provides a kind of non-linear editing system
The method of the serial communication of controlled plant in system, the method includes: first, by the command information in main frame nonlinear editing system
It is sent in Communications service module；Open serial communication；Carry out the data exchange of main frame and peripheral communication apparatus；Confirm used finger
After making execution terminate, close serial communication, wherein can adopt rs232 communications protocol interface in NLE system main frame output par, c,
Control information exchange, data information exchange two class data exchange operation, wherein, data message can be completed after serial communication is set up
Exchange and also include: main frame sends data information exchange, peripheral data information exchanges；Control information exchanges and also includes: main frame
Instruction issues control information, ancillary equipment state control information, ancillary equipment response control information, and wherein, ancillary equipment is permissible
For rs422 protocol devices.
Additionally provide a kind of system of the serial communication of controlled plant in nonlinear editing system, by having simultaneously
Rs232 serial port protocol simultaneously can run the main frame of NLE system, serial converter, meet rs422 serial port protocol equipment three part group
Become, wherein, above-mentioned serial converter is: rs232 serial port protocol is converted to rs422 serial port protocol, use in serial ports conversion
In rs232, rxd receiving data interface, txd transmission data-interface, rts request transmission interface, cts clear to send interface complete to connect
Mouthful conversion connect, described meet rs422 serial port protocol equipment may is that vtr video recording equipment, protools station device,
Pyramix station device.
Also provide a kind of device of the serial communication of controlled plant in nonlinear editing system to include: serial line interface leads to simultaneously
News service module, serial ports modular converter；May also include that serial ports control module.
Compared with prior art, the embodiment of the present invention has the advantage that
By method provided in an embodiment of the present invention, by setting up string between NLE system main frame and controlled ancillary equipment
Row communication mechanism, two kinds of serial line interface forms of two kinds of equipment are mutually changed, and set up in read-write duplex channel
Full duplex mode of operation, can complete control data, information data exchanges, and provides respectively for sending loop and reception loop
Independent ground wire, rather than a public ground wire.It is efficiently modified and decreases interference between line, improve anti-dry to surrounding
Disturbing ability, thus improve the transmission speed of data, and expanding transmission range.
Brief description
Fig. 1 is the method schematic diagram in the embodiment of the present invention one；
Fig. 2 is rs232 and rs422 interface conversion schematic diagram in the embodiment of the present invention one；
Fig. 3 is the work system composition schematic diagram in the embodiment of the present invention two；
Fig. 4 is the schematic diagram of the device composition in the embodiment of the present invention three.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail:
Embodiment one:
This flow process of the present invention as shown in Figure 1 in a kind of nonlinear editing system the serial communication of controlled plant method, bag
Include following steps:
First, from load non-linear edit system having the main process equipment of rs232 serial line interface send communication instruction to
" Communications service module ", this module can carry out the conversion of rs232 serial line interface and rs422 serial line interface, connected mode such as Fig. 2
Shown: using rxd receiving data interface in rs232, ground wire is connected wherein said serial converter, txd sends out with reception in rs422
Data-interface is sent to be connected with reading positive pole in rs422, reception positive pole is connected rts request transmission interface, cts removes with rs422
Transmission interface is connected with reading ground wire in rs422；It is to send loop and reception loop to each provide independence by above structure
Ground wire, a rather than public ground wire, effectively avoid interfering between data；Judge whether communicate serial ports afterwards
Having already turned on, if having already turned on, setting up device talk, if serial ports is not switched on, first carries out opening operation, set up equipment afterwards
Communication；After completing above work, the communication between main frame and peripheral communication apparatus can be started, wherein can transmit two kinds of numbers
According to: control information exchanges, data information exchange；Wherein control information exchanges and specifically includes that host command issues control information, outer
Peripheral equipment state control information, ancillary equipment response control information；Data information exchange also includes: main frame sends data message and hands over
Change, peripheral data information exchanges, as long as receiving device can meet for vtr video recording equipment, protools station device
Pyramix station device, and there is rs422 interface protocol, all can carry out bi-directional data transmission, confirm all behaviour
After making to terminate, close serial line interface, terminate whole communication process afterwards.
Compared with prior art, the present invention has non-volume main frame and the tool can with effectively solving with rs232 serial line interface
There is the two-way between the vtr video recording equipment of rs422 serial line interface, protools station device, pyramix station device
News interconnection, and can effectively prevent influencing each other of information, accomplish effective data isolation, thus ensure that the transmission of data
Quality, and implement also very easy, it is particularly well-suited to need big data, occasion that is long-time, needing dynamic process；
Embodiment two:
This flow process of the present invention as shown in Figure 3 in a kind of nonlinear editing system the serial communication of controlled plant system, main
Including: there is rs232 serial port protocol and the main frame of NLE system can be run；Serial converter；Meet rs422 serial port protocol to set
Standby, wherein said serial converter mainly completes rs232 agreement serial ports and is converted to rs422 agreement serial ports, and it is logical to set up serial ports
News, specific linking relationship, as shown in Fig. 2 being described to this Partial Feature in embodiment one, is not repeated herein, treats
The requirement of communication ancillary equipment is to meet the vtr video recording equipment of rs422 serial port protocol, protools station device, pyramix
Station device.Because there is interface switching device in this system, also right and wrong are expanded for the typically non-hardware capability compiling main frame
Often easily it is noted that in carrying out interface conversion link process, those skilled in the art are not it is contemplated that " door can be passed through
Level " design completes the switching of various controlled potential signals, and can also increase comparing function, effective control twocouese data
" by force " the occurrence of, therefore above improvement, belong to and do not need creative work within protection scope of the present invention
The technical scheme being achieved with.
Embodiment three:
This flow process of the present invention as shown in Figure 4 in a kind of nonlinear editing system the serial communication of controlled plant device:
Basic composition includes: serial port communication service module, serial ports modular converter；
In order to realize the control to serial ports, serial ports control module can also be increased further；
If the equipment that description is controlled in embodiment one, two is vtr video recording equipment, protools station device, pyramix
Station device.
Above equipment is the basic component devices completing indication main frame and ancillary equipment in the present invention.
It should be pointed out that for those skilled in the art, in order to complete further to improve function, can be with the basis of here device
Upper increase concurrent peripheral quantity, host number or after reload signal amplifying device, carry out the promotion of many equipment, in fact
Existing having the technical effect that belong to protection scope of the present invention because the open scheme of the present invention controls.
Claims (9)
1. in a kind of nonlinear editing system the serial communication of controlled plant method it is characterised in that include:
Command information in main frame nonlinear editing system is sent in Communications service module；
Open serial communication；
Carry out the data exchange of main frame and peripheral communication apparatus；
Close serial communication；
Wherein, described main frame is the main frame having rs232 serial port protocol and can running NLE system；
Described serial communication is completed by serial converter, and described serial converter is: rs232 agreement serial ports is converted to rs422
Agreement serial ports；Using rxd receiving data interface in rs232, ground wire is connected described serial converter, txd sends out with reception in rs422
Data-interface is sent to be connected with reading positive pole in rs422, reception positive pole is connected rts request transmission interface, cts removes with rs422
Transmission interface is connected with reading ground wire in rs422.
2. method as described in claim 1: it is characterized in that: also include rs422 communication association in described Communications service module
View device coding agreement；
3. the method as described in claim 1 or 2: it is characterized in that: described serial communication of opening can communicate association for rs232
View equipment:
4. method as described in claim 1: it is characterized in that: the described data exchange carrying out main frame and peripheral communication apparatus
Also include: control information exchanges, data information exchange.
5. method as described in claim 4: it is characterized in that: described control information exchanges and also includes: host command issues
Control information, ancillary equipment state control information, ancillary equipment response control information.
6. method as described in claim 5: it is characterized in that: described data information exchange also includes: main frame sends data
Information exchanges, peripheral data information exchanges.
7. the method as described in claim 1 or 2: it is characterized in that: described closing serial communication can communicate association for rs232
View equipment.
8. in a kind of nonlinear editing system the serial communication of controlled plant system it is characterised in that include:
There is rs232 serial port protocol and the main frame of NLE system can be run；
Serial converter；
Meet rs422 serial port protocol equipment；
Described serial converter is: rs232 agreement serial ports is converted to rs422 agreement serial ports；
Described serial converter uses rxd receiving data interface in rs232, and reception ground wire is connected, txd sends data with rs422
Interface is connected with reading positive pole in rs422, positive pole is connected rts request transmission interface, cts clear to send connects with reception in rs422
Mouth is connected with reading ground wire in rs422.
9. system as claimed in claim 8 is it is characterised in that the described rs422 serial port protocol equipment that meets may is that vtr records
As equipment, protools station device, pyramix station device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110066866.9A CN102685396B (en) | 2011-03-18 | 2011-03-18 | Method and system for serial communication of controlled equipment in nonlinear edition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110066866.9A CN102685396B (en) | 2011-03-18 | 2011-03-18 | Method and system for serial communication of controlled equipment in nonlinear edition system |
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| CN102685396A CN102685396A (en) | 2012-09-19 |
| CN102685396B true CN102685396B (en) | 2017-02-01 |
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| CN201110066866.9A Active CN102685396B (en) | 2011-03-18 | 2011-03-18 | Method and system for serial communication of controlled equipment in nonlinear edition system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104144137B (en) * | 2014-08-12 | 2017-08-29 | 北京控制与电子技术研究所 | A kind of high speed LVDS serial synchronous communication controllers |
| CN105761666B (en) * | 2016-02-03 | 2018-06-26 | 西安诺瓦电子科技有限公司 | The anti-interference digital circuit of serial ports and LED displays driving reception card |
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| KR20070072039A (en) * | 2005-12-30 | 2007-07-04 | 노틸러스효성 주식회사 | Device for connecting to analyze communication state of automated teller machine |
| KR20070072045A (en) * | 2005-12-30 | 2007-07-04 | 노틸러스효성 주식회사 | Device for connecting to analyze communication state of automated teller machine |
| CN101609544A (en) * | 2009-07-21 | 2009-12-23 | 华中科技大学 | A kind of image processor data load and method of testing and device |
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| US4884287A (en) * | 1988-04-01 | 1989-11-28 | Ncr Corporation | Converter device for interconnecting systems having different communication standards |
| DE19514888A1 (en) * | 1995-04-22 | 1996-10-24 | Rexroth Mannesmann Gmbh | RS-232 to RS-422 or RS-485 interface converter between lap-top or note-book computer and industrial controller |
| CN1434394A (en) * | 2002-01-22 | 2003-08-06 | 吴晓峰 | Palm wireless dish ordering system |
| CN1492631A (en) * | 2002-10-24 | 2004-04-28 | 华为技术有限公司 | Auxiliary data port device in synchronous digital system and its communication method |
| KR20070072039A (en) * | 2005-12-30 | 2007-07-04 | 노틸러스효성 주식회사 | Device for connecting to analyze communication state of automated teller machine |
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