CN101609297B - Method for synchronous transmission of chip data of printing consumable material - Google Patents
Method for synchronous transmission of chip data of printing consumable material Download PDFInfo
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- CN101609297B CN101609297B CN200810028943XA CN200810028943A CN101609297B CN 101609297 B CN101609297 B CN 101609297B CN 200810028943X A CN200810028943X A CN 200810028943XA CN 200810028943 A CN200810028943 A CN 200810028943A CN 101609297 B CN101609297 B CN 101609297B
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Abstract
The present invention provides a method for synchronous transmission of printing-supplies microarray data. The data is stored in a memory of an electronic module of the printing-supplies microarray data, the electronic module is provided with a microprocessor capable of exchanging information with the outside; the memory also stores return time for returning the data to the outside; and the inside of the microprocessor is provided with a counter. The method comprises the following steps: determining base time; expressing the return time by the summarizing result of the set integer multiples of the base time and remaining time, and storing the base time, the set integer multiples of the base time and the remaining time in the memory; judging whether the information transmitted from the outside is received by the microprocessor or not, if so, starting the counter and generating the return data; and judging whether the set times of the overflow marking of the counter are equal to the set integer multiples of the base time or not, if so, transmitting the return data at the time from the start time of the counter to the end of the remaining time. By using the method, the counter with fewer bits can be used for timing the return time, so that the production cost of the electronic module is reduced.
Description
Technical field
The present invention relates to the method that a kind of data transmit, especially a kind of echo-plex data synchronization method that is used for the printing consumables chip.
Background technology
Laser printer has advantages such as print speed is fast, print quality is good with it, is widely used in the print job.Existing laser printer uses dismountable cartridge to load when printing the carbon dust that is consumed mostly, and a chip is set on the outer wall of cartridge, chip comprises substrate, the one side of substrate is provided with the contact with the laser printer communication, another side is provided with an electronic module, and the electrical schematic diagram of this electronic module as shown in Figure 1.
Electronic module comprises two splicing ears 31,32, power module 20, modulation module 21, demodulation module 22, clock module 23 and microcontroller 10.Wherein, splicing ear 31,32 is connected with the laser printer contact respectively, carries out message exchange with this and laser printer, and receives the voltage signal that laser printer provides.
After splicing ear 31,32 obtains voltage signal, voltage signal is sent to power module 20 carries out processing such as rectification, filtering, provide the galvanic current source to electronic module.Simultaneously, splicing ear 31,32 inputs to microcontroller 10 after with information via demodulation module 22 demodulation that receive, and obtains the stable clock signal by clock module 23 from voltage signal, offers microcontroller 10.
Be provided with storer 11 and counter 12 in the microcontroller 10.Storer 11 stores the cartridge relevant information, as information such as cartridge model, toner color, carbon dust surpluses.Microcontroller 10 receives after laser printer sends the information that reads in the storer 11, reads relevant data, and will generate corresponding data and be back to laser printer.Microcontroller 10 is when the laser printer return data, and the data of needs being returned by pin IO1 export in the modulation module 21, through being sent to laser printer after modulation module 21 modulation.
The counter 12 of microcontroller 10 is used to carry out timing, in the above-mentioned communication process of microcontroller 10 and laser printer, usually microcontroller 10 needs to respond in the fixed time that receives after laser printer sends signal, therefore, after microcontroller 10 receives the information that laser printer sends, when judgement need return the return data of this information correspondence, and the moment of return message is calculated the data that need return by microcontroller 10 simultaneously by counter 12 timing.Counter 12 comes computing time by the number of calculating pulse, and after counter 12 sent the signal that is carved into when this returns, microcontroller 10 was about to return data and is sent to laser printer.
But the figure place of the counter of establishing in the big multi-microcontroller 10 12 is less, and its maximum variable is less, is 256 as 8 counter calculated maximum, if each burst length is 1 microsecond, then the maximum variable of 8 digit counters is 256 microseconds.In case time of return is longer, need select the more counter of figure place 12 for use, just need the higher microcontroller of use cost 10.
And, if microcontroller 10 need return a plurality of different data, and the time of return difference of each return data, then need in storer 11, store a plurality of times of return.During microcontroller 10 return datas,, use a corresponding counter 12 to carry out timing at different times of return.Like this, need select the microcontroller 10 that is provided with a plurality of counters 12 for use, increase the production cost of electronic module, even can't find the microcontroller 10 that is provided with suitable quantity counter 12.
Summary of the invention
Fundamental purpose of the present invention provides a kind of printing consumables chip data of the less counter timing time of return of figure place that uses and transmits method for synchronous;
Another object of the present invention provides a kind of printing consumables chip data that reduces the electronic module production cost and transmits method for synchronous.
In order to realize above-mentioned fundamental purpose, in the method for synchronous that printing consumables chip data provided by the invention transmits, this data storage is in the storer of the electronic module of printing consumables chip, this electronic module is provided with the microcontroller of addressable this storer, microcontroller can carry out message exchange with the outside, the time of return of the oriented outside return data of memory stores is provided with a counter in the microcontroller, this method comprises:
Determine a reference time,
Use this integral multiple of setting and result who adds up an excess time reference time and represent this time of return, and with the integral multiple of reference time, setting reference time and be stored in excess time in the storer,
Microcontroller is provided with the initial value of counter, judge whether to receive the outside information that transmits, in this way, the enabling counting device also generates the data that need return, judge that the number of times that the counter overflow flag is provided with equates with the integral multiple of setting this reference time, in this way, sends return data in counter timing to finish time excess time, otherwise, continue to judge that the number of times that overflows of counter equates with the integral multiple of this setting.
By such scheme as seen, time of return is to be represented by integral multiple of setting reference time and the result who adds up excess time, when counter carries out timing, adopts the mode of Split Time, reference time and excess time that the difference timing is many times.Like this, counter does not promptly need the complete time of return of timing one time, but by repeatedly timing mode realization, the each clocking value of counter can significantly reduce, and the figure place of counter also can reduce, and uses the counter of establishing in the common microcontroller to realize.
Simultaneously,, can select for use cheap microcontroller to produce electronic module, reduce the production cost of electronic module because the figure place of counter reduces.
The preferred scheme of the present invention is that be the maximum variable of counter reference time.Like this, can make full use of the timing range of counter, reduce the number of times that the counter overflow flag is provided with, make the timing of time of return more accurate.
Further scheme is, stores the time of return more than two or two in the storer,
Integral multiple of setting and the result who adds up excess time represent each time of return respectively to use reference time, the integral multiple and an excess time of the respectively corresponding reference time setting of each time of return, integral multiple and the excess time that set the reference time of each time of return correspondence are stored in the storer
After microcontroller receives the outside information that transmits, judge the time of return of this information correspondence, and generate corresponding return data,
Behind the microcontroller enabling counting device, the integral multiple of setting reference time that the number of times that judgement counter overflow flag is provided with is corresponding with this time of return equates, in this way, at the return data that the excess time finish time send correspondence of counter timing to this time of return correspondence.
By such scheme as seen, it is a plurality of times of return of Timing that microcontroller is used a counter, when producing electronic module, can select the microcontroller that only is provided with a counter for use, reduces the production cost of electronic module.
Description of drawings
Fig. 1 is the electric theory diagram of existing carbon powder box chip electronic module;
Fig. 2 is the division synoptic diagram of reference time in the first embodiment of the invention, time of return;
Fig. 3 is the workflow diagram of microcontroller in the first embodiment of the invention;
Fig. 4 is the workflow diagram that microcontroller returns first return data in the first embodiment of the invention;
Fig. 5 is the workflow diagram that microcontroller returns second return data in the first embodiment of the invention;
Fig. 6 is the division synoptic diagram of reference time in the second embodiment of the invention, time of return.
Fig. 7 is the workflow diagram that microcontroller returns first return data in the second embodiment of the invention.
The invention will be further described below in conjunction with drawings and Examples.
Embodiment
First embodiment:
The electronic-module construction of present embodiment is identical with existing electronic module, and its electric theory diagram does not repeat them here as shown in Figure 1.In the present embodiment, storer 11 is arranged in the microcontroller 10, store three different response times, correspond respectively to three kinds of different types of information from laser printer, be that microcontroller 10 receives the first kind information that laser printer sends, its response time corresponds to first time of return.The division synoptic diagram of three times of return as shown in Figure 2.
In the present embodiment, divide three times of return before, need to determine one reference time Tref, reference time, Tref was the maximum variable of counter, for example the maximum variable of 8 digit counters is 256, is 256 microseconds etc.After determining Tref reference time, application Tref reference time divides three times of return.
As seen from Figure 2, therefore the time span of three time of return T1, T2, T3 can use the integral multiple of Tref reference time and the accumulation result of excess time to represent each time of return respectively all greater than Tref reference time.For example, use reference time Tref and result that first excess time, ST1 added up represent the first time of return T1, i.e. T1=Tref+ST1, like this, the first time of return correspondence reference time Tref integral multiple be one times, corresponding excess time be first excess time ST1.In the present embodiment, reference time Tref, the first time of return T1, the first time of return T1 correspondence reference time Tref integral multiple and first excess time ST1 all be stored in the storer 11.
Equally, the second time of return T2 also be use two times reference time Tref and result that second excess time, ST2 added up represent i.e. T2=2 * Tref+ST2.Like this, the second time of return T2 correspondence reference time Tref integral multiple be two times, corresponding excess time be second excess time ST2.Simultaneously, the second time of return T2, its corresponding reference time Tref integral multiple and second excess time ST2 all be stored in the storer 11.
The 3rd time of return T3 also can use two times reference time Tref and result that the 3rd excess time, ST3 added up represent i.e. T3=2 * Tref+ST3.Like this, the 3rd time of return T3 correspondence reference time Tref integral multiple be two times, corresponding excess time be the 3rd excess time ST3.Simultaneously, the 3rd time of return T3, its corresponding reference time Tref integral multiple and the 3rd excess time ST3 all be stored in the storer 11.
With three times of return divide finish and with the information stores of correspondence behind storer 11, microcontroller 10 can be welded on the substrate of carbon powder box chip, and carbon powder box chip be installed on the housing of cartridge.After cartridge was installed to laser printer and starts working, laser printer provided voltage signal to carbon powder box chip, and microcontroller 10 is just started working.In the present embodiment, the workflow diagram of microcontroller 10 as shown in Figure 3.
After microcontroller 10 is started working, execution in step S1 at first, the initial value of counter 12 is set to 0, simultaneously, the overflow flag of counter 12 is removed.Then, microcontroller 10 execution in step S2 judge whether to receive the information that laser printer sends, if the information of receiving, execution in step S3 then, the enabling counting device, counter promptly picks up counting from 0, if do not receive information, return execution in step S2, wait for reception information.
Among the step S4, microcontroller 10 judges whether the information that receives is first kind information, and in this way, then execution in step S5 returns first return data, otherwise, execution in step S6.
The workflow diagram that microcontroller 10 returns first return data as shown in Figure 4.Microcontroller 10 judges that the information that receives is first kind information, and just execution in step S11 calculates the return data of first kind information correspondence, i.e. first return data.Then, microcontroller 10 execution in step S12 judge whether the overflow flag of counter 12 is provided with, and just judge whether the finish maximum variable of start-stop counter 12 of timing of counter 12, promptly finish one time reference time Tref timing.If the overflow flag of counter 12 is not provided with, then continue execution in step S12, wait for the overflow flag setting of counter 12.If the overflow flag of counter 12 is provided with, then remove the overflow flag of counter 12.
Among the step S13, microcontroller 10 is judged whether timing to the first ST1 excess time of counter 12, and in this way, first return data that then will calculate is sent to laser printer, execution in step S14 just, otherwise continue to judge whether timing to the first ST1 excess time of counter 12.
By above-mentioned flow process as seen, after microcontroller 10 receives the first kind information that laser printer sends, be that enabling counting device 12 carries out timing, and after the overflow flag setting once of counter 12, remove the overflow flag of counter 12, and arrive at counter 12 reclocking to the first ST1 excess time, i.e. the finish time of clocking value ST1 first excess time, first return data is sent.Like this, microcontroller 10 is Tref+ST1 Zi receiving first kind information to sending the used time of first return data, just the first time of return T1.Microcontroller 10 can the first time of return T1 to the moment first return data is sent to laser printer, guarantee that laser printer normally prints work.
Review Fig. 3, among the step S6, microcontroller 10 judges whether the information that receives is second type information, and in this way, then execution in step S7 returns second return data, otherwise execution in step S8.The workflow diagram that microcontroller 10 returns second return data as shown in Figure 5.
After microcontroller 10 received second type information, execution in step S21 calculated the return data of the second type information correspondence, i.e. second return data.Then, execution in step S22 judges whether the overflow flag of counter 12 is provided with secondary.Because the initial value of counter 12 is 0, when the overflow flag of counter 12 is provided with for the first time, the maximum variable of expression counter 12 timing finishing start-stop counter 12, promptly reference time Tref.At this moment, microcontroller 10 is removed the overflow flag of counter 12, and allows counter 12 continue timing.When the overflow flag of counter 12 is provided with for the second time, expression counter 12 secondary Tref reference time that finishes as calculated.
After microcontroller 10 judges that the overflow flag of counters 12 has been provided with secondary, the overflow flag of counter 12 is removed, allowed counter 12 continue timing, and execution in step S23, judge whether timing to the second ST2 excess time of counter 12.If counter 12 timing to the second ST2 excess time, microcontroller execution in step S24 sends second return data.
Like this, after microcontroller 10 receives second type information, through two times reference time Tref and one times the second excess time ST2 after, second return data is sent, just returning the employed time of second return data is 2 * Tref+ST2, i.e. the second time of return T2.
Review Fig. 3, among the step S8, microcontroller 10 judges whether the information that receives is the 3rd type information, and in this way, then execution in step S9 returns the 3rd return data, otherwise the workflow of microcontroller 10 finishes.
It is similar to the workflow of returning second return data that microcontroller 10 returns the workflow of the 3rd return data, after microcontroller 10 calculates the 3rd return data, after the overflow flag of judgement counter 12 is provided with secondary, judge whether timing to the ST3 three excess times of counter 12 again, just judge whether timing to the three time of return T3, then the 3rd return data is sent in this way.
By such scheme as seen, after microcontroller 10 received the information that laser printer sends, at first the enabling counting device 12, judge the type of this information, and calculated corresponding return data.Simultaneously, microcontroller 10 judges whether then time of return, by judge number of times that counter 12 overflow flags are provided with whether with reference time Tref the integral multiple of setting equate the accurate timing of realization, for example the integral multiple of the setting of the first time of return T1 correspondence is one times, and the integral multiple of the setting that the second time of return T2 is corresponding with the 3rd time of return T3 is two times.Then microcontroller 10 judge counter 12 whether counter to the excess time of each time of return correspondence, as the first time of return T1 correspondence first excess time ST1, the second time of return T2 correspondence second excess time ST2, the 3rd time of return T3 correspondence the 3rd excess time ST3.At last, microcontroller 10 to corresponding excess time, is sent to laser printer with the return data of all types of information correspondences in counter 12 timing.
Like this, each return data all is sent to laser printer in the time of return of correspondence, guarantees the operate as normal of laser printer.Simultaneously, each time of return is divided into several portions, counter 12 each timing only need a wherein part of timing, finish the timing of each time of return by timing repeatedly.Therefore, the figure place of counter 12 can significantly reduce, and is optional with the less microcontroller 10 of counter 12 figure places when producing carbon powder box chip, reduces the production cost of carbon powder box chip.
In addition, in the present embodiment, microcontroller 10 only uses a counter 12, can realize the timing of a plurality of times of return.Like this,, still can use the microcontroller 10 that is provided with counter 12 negligible amounts, reduce the production cost of carbon powder box chip equally for the more carbon powder box chip of the type of return data.
Certainly, in the present embodiment, all than Tref length reference time, during practical application, the present invention is applicable to that also time of return is shorter than the situation of Tref reference time for three time of return T1, T2, T3.
Second embodiment:
Referring to Fig. 6, be the division synoptic diagram of reference time in the second embodiment of the invention, time of return.As seen from Figure 6, in the present embodiment, the time span of the first time of return T1 less than second reference time Tref2, therefore, the first time of return T1 can be defined as first reference time Tref1, Tref1=T1 just.Use the first time of return T1 (promptly first reference time Tref1), second reference time Tref2 and the result that adds up excess time represent other each time of return.
As seen from Figure 6, the second time of return T2 by one times the first time of return T1 and second excess time ST2 form, be T2=1 * T1+0 * Tref2+ST2, therefore the integral multiple that first reference time of the second time of return T2 correspondence, Tref1 set is one times, the integral multiple that second reference time, Tref2 set is zero doubly, corresponding excess time be second excess time ST2.Certainly, the first time of return T1, second reference time Tref2, the second time of return T2 and integral multiple that first reference time of the second time of return T2 correspondence, Tref1 set, integral multiple that second reference time, Tref2 set, second excess time ST2 all be stored in the storer 11.
Equally, the 3rd time of return T3 by one times the first time of return T1, two times second reference time Tref2 and result that the 3rd excess time, ST3 added up represent i.e. T3=1 * T1+2 * Tref2+ST3.Therefore, the integral multiple that first reference time of the 3rd time of return T3 correspondence, Tref1 set is one times, and the integral multiple that second reference time, Tref2 set is two times, corresponding excess time be the 3rd excess time ST3.Simultaneously, the 3rd time of return T3, integral multiple that the first corresponding reference time, Tref1 set, integral multiple that second reference time, Tref2 set, the 3rd excess time ST3 all be stored in the storer 11.
Certainly, the first time of return T1 also can be considered as by one times first reference time Tref1, zero doubly second reference time Tref2 and the result that adds up excess time represent, and be zero excess time, be T1=1 * Tref1+0 * Tref2+0, therefore, the first time of return T1 correspondence first reference time Tref1 the integral multiple of setting be one times, second reference time Tref2 the integral multiple of setting be zero doubly, be zero excess time.
Three times of return divide and with the data storage of correspondence behind storer 11, microcontroller 10 can be started working.In the present embodiment, the workflow of microcontroller 10 and first embodiment are roughly the same, i.e. process flow diagram as shown in Figure 3.Different with first embodiment is, in the present embodiment, the initial value of counter 12 is not 0, but the difference of the maximum variable and the first time of return T1, i.e. (Tref2-T1).Like this, after counter 12 starts, promptly pick up counting from (Tref2-T1), when counter 12 overflowed, the clocking value of expression counter 12 was the maximum variable of counter 12, and the time span of its timing is the first time of return T1.
In the present embodiment, the workflow of returning first return data as shown in Figure 7.After microcontroller 10 received the information that laser printer sends, enabling counting device 12 was judged and is said that the information that receives is first kind information, execution in step S31 then, the return data of calculating first kind information correspondence, i.e. first return data.Then, microcontroller 10 execution in step S32 judge whether the overflow flag of counter 12 is provided with, and judge just whether the first time of return T1 arrives.If the overflow flag of counter 12 is not provided with, then continue to wait for the setting of overflow flag.If the overflow flag setting represents that the first time of return T1 timing arrives, execution in step S33 then, first return data that microcontroller 10 will calculate is sent to laser printer.
Like this, microcontroller 10 only by once judging the setting of counter 12 overflow flags, can accurately be finished the timing of the first time of return T1.
When microcontroller 10 returns second return data, after the overflow flag setting once of judging counter 12, promptly calculate the one time first time of return T1 that finishes after, the overflow flag of zero clearing counter 12, counter 12 continues timing.Then, after microcontroller 10 is judged counter 12 timing to the second ST2 excess time, second return data is sent to laser printer.
Equally, when microcontroller 10 returns the 3rd return data, need to judge whether the overflow flag of counter 12 is provided with three times.When the overflow flag of counter 12 was provided with for the first time, expression counter 12 had been finished the timing of one time first time of return T1, and removed overflow flag.When second, third time of overflow flag of counter 12 is provided with, the expression counter 12 calculate the maximum variable that finishes once respectively, just second reference time Tref2.At last, microcontroller 10 judges that counters 12 again behind timing to the ST3 three excess times, are sent to laser printer with the 3rd return data.
This shows, microcontroller 10 from receive the 3rd type information to send the employed time of the 3rd return data be one times the first time of return T1, two times second reference time Tref2 and the 3rd excess time ST3 summation, i.e. 1 * T1+2 * Tref2+ST3, just the 3rd time of return T3.Like this, whether microcontroller 10 is provided with three times by the overflow flag of judging counter 12, and judges and can judge the three time of return T3 of timing to the three excess times of counter 12 timing to the, and the 3rd return data is sent to laser printer.
In the present embodiment, microcontroller 10 is judged each time of return then, all need to judge counter 12 overflow flags be provided with number of times whether equal first reference time Tref1 setting integral multiple and second reference time Tref2 the integral multiple sum of setting, and at counter 12 when timing is to corresponding excess time again, the corresponding time of return timing of judgement is arrived, and the return data of correspondence is sent to laser printer.
Therefore, present embodiment can only use 12 pairs of a plurality of times of return of a counter to carry out timing, and the figure place of counter 12 also reduces greatly, selects for use common microcontroller 10 to realize, reduces the production cost of carbon powder box chip greatly.
Certainly, among the present invention, microcontroller can be judged the number of times that is provided with of counter 12 overflow flags by the method for query counts device 12 overflow flag zero clearing number of times, also can judge the number of times that is provided with of counter 12 overflow flags by the method that computing counter 12 overflows interruption times, perhaps come computing counter 12 overflow flags that number of times is set by the another one counter, microcontroller judges that by inquiring about this rolling counters forward value counter 12 overflow flags are provided with number of times, also can realize purpose of the present invention.Perhaps, use timer and substitute counter of the present invention, also do not influence enforcement of the present invention.
Simultaneously, method of the present invention not necessarily is applied on the carbon powder box chip, and the ink box chip that ink-jet printer uses also can use method of the present invention.
It is emphasized that at last; the invention is not restricted to above-mentioned embodiment; such as the change of change, time of return quantity and the length of length reference time, the subtle change such as change of time of return division methods, also should be included in the protection domain of claim of the present invention.
Claims (6)
1. the method for synchronous that transmits of printing consumables chip data, this data storage is in the storer of the electronic module of printing consumables chip, described electronic module is provided with the microcontroller of addressable this storer, described microcontroller can carry out message exchange with the outside, described microcontroller is provided with a counter, the time of return of the oriented outside return data of described memory stores;
Described method comprises
Determine a reference time;
Use reference time integral multiple of setting and the result who adds up an excess time and represent described time of return, and with the integral multiple of described reference time, setting reference time and be stored in excess time in the storer;
Microcontroller is provided with the initial value of counter, judge whether to receive the outside information that transmits, in this way, and generate the data that to return, judge that the number of times that the counter overflow flag is provided with equates with the integral multiple of setting described reference time, in this way, send return data in counter timing to described finish time excess time.
2. the method for synchronous that printing consumables chip data according to claim 1 transmits is characterized in that:
Be the maximum variable of counter described reference time.
3. the method for synchronous that printing consumables chip data according to claim 1 transmits is characterized in that:
Store the time of return more than two or two in the described storer;
The result who adds up the integral multiple of the setting of using described reference time and excess time represents each time of return respectively, described each time of return is the integral multiple and an excess time of the setting of a corresponding reference time respectively, with the integral multiple set the reference time of each time of return correspondence and be stored in excess time in the storer;
After microcontroller receives the outside information that transmits, judge the time of return of this data correspondence, and generate corresponding return data;
Behind the microcontroller enabling counting device, the integral multiple of setting reference time that the number of times that judgement counter overflow flag is provided with is corresponding with this time of return equates, in this way, at the return data that the excess time finish time send correspondence of counter timing to this time of return correspondence.
4. the method for synchronous that printing consumables chip data according to claim 3 transmits is characterized in that:
Comprise first reference time and second reference time described reference time;
Be the shortest one of time span in the described time of return more than two or two described first reference time;
Be the maximum variable of counter described second reference time.
5. the method for synchronous that printing consumables chip data according to claim 4 transmits is characterized in that:
The integral multiple of setting of using described first reference time, integral multiple and the accumulation result of excess time that set second reference time are represented each time of return respectively;
Described each time of return is respectively to having the integral multiple of setting for first reference time, integral multiple and the excess time that set second reference time.
6. the method for synchronous that printing consumables chip data according to claim 5 transmits is characterized in that:
Set integral multiple first reference time of described each time of return correspondence is one times.
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| CN200810028943XA CN101609297B (en) | 2008-06-18 | 2008-06-18 | Method for synchronous transmission of chip data of printing consumable material |
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| CN200810028943XA CN101609297B (en) | 2008-06-18 | 2008-06-18 | Method for synchronous transmission of chip data of printing consumable material |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378678A (en) * | 1999-08-16 | 2002-11-06 | 马科尼数据系统公司 | Print engine control system |
| JP2005094395A (en) * | 2003-09-18 | 2005-04-07 | Nippon Telegr & Teleph Corp <Ntt> | Device and method for coding data transmission, and device and method for coding data decoding |
| CN101089750A (en) * | 2006-06-17 | 2007-12-19 | 珠海天威技术开发有限公司 | Process box chip and method of information demodulation |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378678A (en) * | 1999-08-16 | 2002-11-06 | 马科尼数据系统公司 | Print engine control system |
| JP2005094395A (en) * | 2003-09-18 | 2005-04-07 | Nippon Telegr & Teleph Corp <Ntt> | Device and method for coding data transmission, and device and method for coding data decoding |
| CN101089750A (en) * | 2006-06-17 | 2007-12-19 | 珠海天威技术开发有限公司 | Process box chip and method of information demodulation |
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