CN101742757A - Light-dimmer and addressing method thereof - Google Patents
Light-dimmer and addressing method thereof Download PDFInfo
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- CN101742757A CN101742757A CN200810177663A CN200810177663A CN101742757A CN 101742757 A CN101742757 A CN 101742757A CN 200810177663 A CN200810177663 A CN 200810177663A CN 200810177663 A CN200810177663 A CN 200810177663A CN 101742757 A CN101742757 A CN 101742757A
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Abstract
The invention relates to a light-dimmer and an addressing method thereof. The light-dimmer comprises an input end, a detector, a counter and a switchover circuit. The input end is used for receiving a DMX512 packet, wherein the DMX512 packet at least comprises an interval signal, a post-interval marking signal, a first information frame and a second information frame in sequence. The counter is used for counting the time for sampling the first group of effective digital bit lines in the first information frame when the detector detects the post-interval marking signal. The switchover circuit is provided with an output end, wherein the output end outputs the first group of stopping bit lines in the first information frame and the second information frame after the sampling of the first group of effective digital bit lines is finished.
Description
Technical field
The present invention relates to a kind of electronic installation and control method thereof, particularly relate to a kind of light modulating device and addressing method thereof.
Background technology
DMX512 is at present international common light control criterion interface, but the maximum number of 512 representative addressing wherein.The DMX512 agreement is proposed by USITT (U.S. theater technological associations), develops into from the mode of Stage Equipment Control with standard numerical digit interface control light modulating device.The simplicity of DMX512, reliability and flexibility make it be used in amusement industry, display system and other technologies link widely.
DMX512 package (DMX512 packet) adopts asynchronous tandem form, can transmit a plurality of information frames continuously.In actual applications, the DMX encoder can produce interval signal (BREAK), follow beacon signal (the MARK AFTER BREAK that has no progeny between generation before beginning to transmit a plurality of information frames; MAB), next is only a series of information frame.
See also shown in Figure 1ly, it is a kind of circuit diagram of existing known control system.Among Fig. 1, control system comprises a plurality of light modulating device 100a, 100b, and 100c and DMX encoder 190, light modulating device 100a wherein, 100b, 100c are in parallel each other, and DMX encoder 190 couples a plurality of light modulating device 100a, 100b, 100c.If DMX encoder 190 sends the DMX512 package, each light modulating device desires to read one's own information frame then needs to know the address of oneself.The present practice is used local switch (local switch) of this light modulating device itself or the address that decoder (decoder) decides this light modulating device.
This shows that above-mentioned existing light modulating device and addressing method thereof obviously still have inconvenience and defective, and demand urgently further being improved in product structure, method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel light modulating device and addressing method thereof, with simplified system complexity and wrong real one of the current important research and development problem that belongs to of probability that takes place of reduction, also becoming the current industry utmost point need improved target.
Summary of the invention
The objective of the invention is to, overcome the defective that existing light modulating device and addressing method thereof exist, and a kind of novel light modulating device is provided, technical problem to be solved is to make its simplified system complexity and reduce the wrong probability that takes place, and is very suitable for practicality.
Another object of the present invention is to, a kind of addressing method of novel light modulating device is provided, technical problem to be solved is to make its simplified system complexity and reduce wrong probability to take place, thereby is suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of light modulating device according to the present invention's proposition, comprise: an input, in order to receive a DMX512 package, wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn, wherein this first information frame comprise one first the beginning bit line (be bit, this paper all is called bit line), one first group of valid data (be data, this paper all is called data) bit line and one first group stops bit line; One detector couples this input, the beacon signal of having no progeny between being somebody's turn to do in order to detecting; One counter couples this detector, when having no progeny beacon signal between this in order to detect when this detector, calculates this first group of valid data bit line of sampling required sample time; And one switch circuit, couples this counter and this input, and this commutation circuit has an output, and wherein after this first group of valid data bit line sampling finished, this output was exported this first group and stopped bit line and this second information frame.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid light modulating device, it more comprises: a buffer couples this input and this counter, in order to according to this first group of valid data bit line of taking a sample this sample time; And a driver, couple this buffer and a light-emitting component, in order to according to this first group of this light-emitting component of valid data bit-line drive.
Aforesaid light modulating device, wherein said commutation circuit kept an idle state by this output before this first group of valid data bit line sampling finishes.
Aforesaid light modulating device, wherein said idle state are a logic high standard.
Aforesaid light modulating device, wherein said idle state are a logic low level.
The object of the invention to solve the technical problems also realizes by the following technical solutions.The addressing method of a kind of light modulating device that proposes according to the present invention, comprise: receive a DMX512 package, wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn, and wherein this first information frame comprises one first beginning bit line, one first group of valid data bit line and one first group and stops bit line; Detect the beacon signal of having no progeny between this; When detecting when having no progeny beacon signal between this, calculate this first group of valid data bit line of sampling required sample time; And after this first group of valid data bit line sampling finishes, export this first group and stop bit line and this second information frame.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The addressing method of aforesaid light modulating device, its its more comprise: according to this first group of valid data bit line of taking a sample this sample time; And according to this first group of valid data bit-line drive one light-emitting component.
The addressing method of aforesaid light modulating device, its its more comprise: before this first group of valid data bit line sampling finishes, keep an idle state.
The addressing method of aforesaid light modulating device, wherein said idle state are a logic high standard.
The addressing method of aforesaid light modulating device, wherein said idle state are a logic low level.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows:
For achieving the above object, the invention provides a kind of light modulating device, comprise an input, a detector, a counter and a switching circuit, wherein this input couples this detector, this detector couples this counter, and this commutation circuit couples this counter and this input.This input is in order to receive a DMX512 package, wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn, and wherein this first information frame comprises one first beginning bit line, one first group of valid data bit line and one first group and stops bit line.This detector is in order to detect the beacon signal of having no progeny around here.When this counter is had no progeny beacon signal around here in order to detect when this detector, calculate this first group of valid data bit line of sampling required sample time.This commutation circuit has an output, and wherein after this first group of valid data bit line sampling finished, this output was exported this first group and stopped bit line and this second information frame.
In addition, for achieving the above object, the present invention also provides a kind of addressing method of light modulating device, comprises a plurality of steps.At first, receive a DMX512 package, wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn, and wherein this first information frame comprises one first beginning bit line, one first group of valid data bit line and one first group and stops bit line.Moreover, detect the beacon signal of having no progeny around here.When detecting when having no progeny beacon signal around here, calculate sampling this first group of sample time that the valid data bit line is required.And, after this first group of valid data bit line sampling finishes, export this first group and stop bit line and this second information frame.
By technique scheme, light modulating device of the present invention and addressing method thereof have following advantage and beneficial effect at least: the present invention is able to the simplified system complexity and reduces the wrong probability that takes place.
In sum, the invention provides a kind of light modulating device and addressing method thereof, this light modulating device comprises an input, a detector, a counter and a switching circuit.This input is that wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn in order to reception DMX512 package.When this counter is had no progeny beacon signal around here in order to detect when this detector, calculate first group of sample time that the valid data bit line is required in this first information frame of sampling.This commutation circuit has an output, and wherein after this first group of valid data bit line sampling finishes, first group of exporting in this first information frame of this output stops bit line and this second information frame.The present invention has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is a kind of circuit diagram that has known control system now.
Fig. 2 A is the circuit diagram according to a kind of control system of the embodiment of the invention.
Fig. 2 B is the sequential chart of the control system among Fig. 2 A.
Fig. 3 A is the functional block diagram according to a kind of light modulating device of the embodiment of the invention.
Fig. 3 B is the sequential chart of the light modulating device among Fig. 3 A.
Fig. 4 is the flow chart according to the addressing method of a kind of light modulating device of the embodiment of the invention.
100a: light modulating device 100b: light modulating device
100c: light modulating device 190:DMX encoder
200: light modulating device 200a: light modulating device
200b: light modulating device 200c: light modulating device
210: input 210a: input
210b: input 210c: input
220: detector 230: counter
240: commutation circuit 250: output
250a: output 250b: output
250c: output 260: buffer
270: driver 272: light-emitting component
290:DMX encoder 300a:DMX512 package
300b:DMX512 package 300c:DMX512 package
300d:DMX512 package 300e:DMX512 package
310a: interval signal 310b: interval signal
310c: interval signal 310d: interval signal
310e: interval signal 310f: interval signal
320a: beacon signal 320b has no progeny: the beacon signal of having no progeny
320c: beacon signal 320d has no progeny: the beacon signal of having no progeny
320e: beacon signal 320f has no progeny: the beacon signal of having no progeny
330: the first information frames beginning in 331: the first bit line
332: the first groups of valid data bit lines stop bit line for 333: the first groups
340: the second information frames beginning in 341: the second bit line
342: the second groups of valid data bit lines stop bit line for 343: the second groups
350: the three information frames beginning in 351: the three bit line
352: the three groups of valid data bit lines 353: the stop bit line for three groups
380e: idle state 380f: idle state
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to light modulating device and its embodiment of addressing method, structure, method, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can be known to present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
See also shown in Fig. 2 A-2B, wherein Fig. 2 A is the circuit diagram according to a kind of control system of the embodiment of the invention, and Fig. 2 B is the sequential chart of the control system among Fig. 2 A.Among Fig. 2 A, this control system comprises a plurality of light modulating device 200a, 200b, and 200c and DMX encoder 290, light modulating device 200a wherein, 200b, 200c is one another in series, and DMX encoder 290 couples light modulating device 200a.Should be appreciated that, light modulating device 200a, 200b, 200c only are illustrations, are not in order to limit the quantity of light modulating device, under the standard that meets the DMX512 agreement, but the quantity and the series-parallel system thereof of elasticity increase and decrease light modulating device.In the present embodiment, light modulating device 200a has input 210a and output 250a, and light modulating device 200b has input 210b and output 250b, and light modulating device 200c has input 210c and output 250c.DMX encoder 290 couples the input 210a of light modulating device 200a, the output 250a of light modulating device 200a couples the input 210b of light modulating device 200b, the output 250b of light modulating device 200b couples the input 210c of light modulating device 200c, and the output 250c of light modulating device 200c can couple other similar light modulating devices (not illustrating).It should be noted that DMX encoder 290 in order to produce DMX512 package (DMX512packet) 300a, light modulating device 200a receives DMX512 package 300a by its input 210a.DMX512 package 300a comprises interval signal (BREAK) 310a among Fig. 2 B, beacon signal (MARK AFTER BREAK has no progeny; MAB) 320a, the first information frame (frame) 330, the second information frame 340 and the 3rd information frame 350, wherein the first information frame 330 comprises first beginning bit line (START BIT) 331, first groups of valid data bit lines (the SIGNIFICANT DATABITS) 332 and first groups and stops bit line (STOP BITS) 333; The second information frame 340 comprises the second beginning bit line 341, second group of valid data bit line 342 and second group and stops bit line 343; The 3rd information frame 350 comprises the 3rd beginning bit line 351, the 3rd group of valid data bit line 352 and the 3rd group and stops bit line 353.For instance, the first beginning bit line 331, the second beginning bit line 341 and the 3rd beginning bit line 351 account for 1 bit line all respectively, first group of valid data bit line 332, second group of valid data bit line 342 and the 3rd group of valid data bit line 352 account for 8 bit lines all respectively, and first group stops bit line 333, second group and stop bit line 343 and the 3rd group and stop bit line 353 and account for 2 bit lines all respectively.Then, the light modulating device 200a first group of valid data bit line 332 of taking a sample, and by the output 250a of light modulating device 200a output DMX512 package 300b, wherein DMX512 package 300b comprise interval signal 310b, have no progeny beacon signal 320b, the second information frame 340 and the 3rd information frame 350.Then, the light modulating device 200b second group of valid data bit line 342 of taking a sample, and by the output 250b of light modulating device 200b output DMX512 package 300c, wherein DMX512 package 300c comprise interval signal 310c, have no progeny beacon signal 320c and the 3rd information frame 350.Then, light modulating device 200c the 3rd group of valid data bit line 352 of taking a sample.
In the control system of using present embodiment, can be with a plurality of light modulating device serial connections, the output of N light modulating device is the input of N+1 light modulating device.Each light modulating device is all taken a sample for the information frame of receiving at first, does not need extra local switch (local switch) or decoder (decoder) to come addressing.
In order to make narration of the present invention more detailed and complete, see also shown in Fig. 3 A-Fig. 3 B, wherein Fig. 3 A is the functional block diagram according to a kind of light modulating device of the embodiment of the invention, Fig. 3 B is the sequential chart of the light modulating device among Fig. 3 A.The light modulating device 200 of present embodiment light modulating device 200a, 200b, the 200c with above-mentioned in fact is identical.Among Fig. 3 A, light modulating device 200 can comprise input 210, detector 220, counter 230 and commutation circuit 240, wherein input 210 couples detector 220 and commutation circuit 240, detector 220 couples counter 230, commutation circuit 240 has output 250, and DMX encoder 290 couples input 210.
In the present embodiment, DMX encoder 290 is in order to producing DMX512 package 300d, and receives DMX512 package 300d by input 210.Among Fig. 2 B, DMX512 package 300d comprises interval signal 310d at least in regular turn, have no progeny beacon signal 320d, the first information frame 330 and the second information frame 340, and wherein the first information frame 330 comprises the first beginning bit line 331, first group of valid data bit line 332 and first group and stops bit line 333; The second information frame 340 comprises the second beginning bit line 341, second group of valid data bit line 342 and second group and stops bit line 343.Beacon signal 320d has no progeny between whether detector 220 receives in order to detecting.Counter 230 in order to when between have no progeny after beacon signal 320d finishes, calculate first group of valid data bit line of sampling 332 required sample time.Commutation circuit 250 is according to this sample time, before 332 samplings of first group of valid data bit line finish, keep an idle state at output 250, and after 332 samplings of first group of valid data bit line finish, commutation circuit 250 stops the bit line 332 and the second information frame 340 with conducting between input 210 and the output 250 for first group in output 250 outputs.
Among Fig. 3 B, output 250 exportable DMX512 package 300e.DMX512 package 300e comprises interval signal 310e at least in regular turn, have no progeny the beacon signal 320e and the second information frame 340, and wherein the second information frame 340 comprises the second beginning bit line 341, second group of valid data bit line 342 and second group and stops bit line 343.It should be noted that because before 332 samplings of first group of valid data bit line finished, the idle state 380e that output 250 is kept was logic high standard (logic high).In addition, first group stops bit line 333 also for the logic high standard.Therefore, the beacon signal 320e that has no progeny can comprise idle state 380e and first group and stops bit line 333.On the other hand, output 250 exportable DMX512 package 300f.DMX512 package 300e comprises interval signal 310f at least in regular turn, have no progeny the beacon signal 320f and the second information frame 340, and wherein the second information frame 340 comprises the second beginning bit line 341, second group of valid data bit line 342 and second group and stops bit line 343.It should be noted that because before 332 samplings of first group of valid data bit line finished, the idle state 380f that output 250 is kept was logic low level (logic low).Therefore, the beacon signal 320e that has no progeny only comprises first group and stops bit line 333.Should be appreciated that above idle state is an illustration only, is not in order to limit the present invention, under the state that meets the DMX512 agreement, but the form of the DMX512 package that elasticity selection output 250 is exported.
Please continue to consult shown in Fig. 3 A, light modulating device 200 also can comprise buffer 260 and driver 270, and wherein buffer 260 couples input 210, counter 230 and driver 270.Among the 3A figure, the sample time of buffer 260 in order to be calculated, first group of valid data bit line 332 among the DMX512 package d taken a sample according to counter 230.Driver 270 is in order to come driven light-emitting element 272 according to first group of valid data bit line 332, and wherein light-emitting component 272 can be elements such as light-emitting diode (be diode, this paper all is called diode), Organic Light Emitting Diode.By this, the illumination effect of control light-emitting component 272.
See also shown in Figure 4ly, it is the flow chart according to the addressing method of a kind of light modulating device of one embodiment of the invention.Among Fig. 4, at first, in step 410, light modulating device receives the DMX512 package, wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn, wherein this first information frame comprises one first beginning bit line, one first group of valid data bit line and one first group and stops bit line, and this second information frame comprises one second beginning bit line, one second group of valid data bit line and one second group and stops bit line.In step 420, detect the beacon signal of having no progeny around here.If do not detect the beacon signal of having no progeny around here, then continue at step 420, detect the beacon signal of having no progeny around here.On the other hand, if detect the beacon signal of having no progeny around here,, calculate this first group of sample time that the valid data bit line is required of taking a sample in step 430.Then, in step 440, after this first group of valid data bit line sampling finishes, export this first group and stop bit line and this second information frame.Moreover, before this first group of valid data bit line sampling finishes, keep an idle state, wherein this idle state can be logic high standard, logic low level or similar state.
In addition, after the execution in step 430, can be in step 450, according to this first group of valid data bit line of taking a sample above-mentioned sample time.Then, in step 460, according to these first group of valid data bit-line drive one light-emitting component, wherein elements such as this light-emitting component light-emitting diode, Organic Light Emitting Diode.By this, the illumination effect of control light-emitting component.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. light modulating device is characterized in that it comprises:
One input, in order to receive a DMX512 package, wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn, and wherein this first information frame comprises one first beginning bit line, one first group of valid data bit line and one first group and stops bit line;
One detector couples this input, the beacon signal of having no progeny between being somebody's turn to do in order to detecting;
One counter couples this detector, when having no progeny beacon signal between this in order to detect when this detector, calculates this first group of valid data bit line of sampling required sample time; And
One switches circuit, couples this counter and this input, and this commutation circuit has an output, and wherein after this first group of valid data bit line sampling finished, this output was exported this first group and stopped bit line and this second information frame.
2. light modulating device according to claim 1 is characterized in that it more comprises:
One buffer couples this input and this counter, in order to according to this first group of valid data bit line of taking a sample this sample time; And
One driver couples this buffer and a light-emitting component, in order to according to this first group of this light-emitting component of valid data bit-line drive.
3. light modulating device according to claim 1 is characterized in that wherein said commutation circuit before this first group of valid data bit line sampling finishes, keeps an idle state by this output.
4. light modulating device according to claim 3 is characterized in that wherein said idle state is a logic high standard.
5. light modulating device according to claim 3 is characterized in that wherein said idle state is a logic low level.
6. the addressing method of a light modulating device is characterized in that it comprises following steps:
Receive a DMX512 package, wherein this DMX512 package comprises an interval signal, the beacon signal of having no progeny, one first information frame and one second an information frame at least in regular turn, and wherein this first information frame comprises one first beginning bit line, one first group of valid data bit line and one first group and stops bit line;
Detect the beacon signal of having no progeny between this;
When detecting when having no progeny beacon signal between this, calculate this first group of valid data bit line of sampling required sample time; And
After this first group of valid data bit line sampling finishes, export this first group and stop bit line and this second information frame.
7. the addressing method of light modulating device according to claim 6 is characterized in that it more comprises:
According to this first group of valid data bit line of taking a sample this sample time; And
According to this first group of valid data bit-line drive one light-emitting component.
8. the addressing method of light modulating device according to claim 6 is characterized in that it more comprises:
Before this first group of valid data bit line sampling finishes, keep an idle state.
9. the addressing method of light modulating device according to claim 8 is characterized in that wherein said idle state is a logic high standard.
10. the addressing method of light modulating device according to claim 8 is characterized in that wherein said idle state is a logic low level.
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| CN200810177663A CN101742757A (en) | 2008-11-20 | 2008-11-20 | Light-dimmer and addressing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799547A (en) * | 2012-07-06 | 2012-11-28 | 深圳市磊芯半导体有限公司 | DMX (digital dimmer protocol) 512-based chip addressing system and addressing mode thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102799547A (en) * | 2012-07-06 | 2012-11-28 | 深圳市磊芯半导体有限公司 | DMX (digital dimmer protocol) 512-based chip addressing system and addressing mode thereof |
| CN102799547B (en) * | 2012-07-06 | 2015-06-17 | 深圳市磊芯半导体有限公司 | DMX (digital dimmer protocol) 512-based chip addressing system and addressing mode thereof |
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Application publication date: 20100616 |