CN101405670A - Apparatus and method for controlling activation of an electronic device - Google Patents

Abstract

The present invention provides a method and apparatus for controlling the activation of an electronic device. For a desired activation ratio, which defines the 'ON' time relative to the 'OFF' time of the electronic device for a given time period, the method and apparatus according to the present invention evaluates an activation sequence. The activation sequence comprises two or more activation time periods and one or more deactivation periods, wherein the ratio between the two or more activation periods and the predetermined time period is equivalent to the desired activation ratio.

Description

Be used to control the equipment and the method for the activation of electron device

Invention field

[0001] the invention relates to field of electronic devices, particularly, relate to a kind of method and apparatus that is used to control the activation (activation) of electron device.

Background technology

[0002] control method that the electric power that width modulation is that a kind of known being used for makes apace and be fed to electron device--for example DC motor, light emitting diode (LED) or the like--turns on and off.According to this control method, dc voltage is converted into square-wave signal, and this square-wave signal for example connecting fully and replacing between zero, gives a series of electric power of electron device " kick ".For example, when switching frequency was enough high, because the flywheel momentum of DC motor, it can be with stable speed running, and for example LED can seem to launch the illumination level of substantial constant.By regulating the duty cycle of pulse-width signal, that is, modulation corresponding to for given cycling time section electron device be the pulse width of the time portion of " connection ", time averaging power can be changed.Like this, the electromotor velocity of DC motor or can be conditioned by the illumination level that LED produces.

[0003] illustrate an example of width modulation among Fig. 1, wherein for given duty cycle, make pulse width 10 character with the cycle in each cycle cycling time 20 repeats.

[0004] the relevant activation of using width modulation to control electron device (for example LED) of many patents has been arranged.

[0005] U.S. Patent No. 5,008, and 788 have described a kind of multi-color illumination equipment that uses in liquid crystal display (LCD) equipment backlight.This light fixture comprises paired LED tube core, and they can be controlled by the amplitude and the duration of the voltage potential that applies with given suitable polarity.For example, can apply the voltage that has width modulation, to produce the light of the third color of continually varying.

[0006] U.S. Patent No. 6,806,659 have described a kind of light fixture that comprises a plurality of LED, wherein the activation of LED is provided by controller and switch, this controller generates the pulse-width signal that has corresponding to the duty cycle of intensity level, and this switch is directed to LED to electric current according to pulse-width signal.

[0007] U.S. Patent No. 6,967, and 448 have described the method and apparatus that is used for interrupting controlling according to one or more of electric power that is fed to light source the illumination that is generated by light source.This patent also defines the controller output that is coupled to light source and sends one or more control signal to light source, and wherein control signal can comprise one or more pulse-width signal.

[0008] U.S. Patent No. 6,016, and 038 and 6,788,011 has described to relate to and can generate such as being used to throw light on or showing the system and method for LED system of the light of purposes.This LED can be controlled by processor, for example by using pulse-width signal to change the brightness and/or the color of the light that is produced.The illumination that finally obtains can be controlled by computer program, so that light pattern complicated, that design in advance to be provided.

[0009] U.S. Patent No. 6,965, and 205 have described based on the illuminating product of light emitting diode (LED) and the various realizations of method.Described a kind of illuminator or equipment, it can comprise user interface, processor, one or more controller, one or more LED and storer.This processor can be carried out the program that is stored in the storer, is used for controlling the signal of the excitation of LED with generation.This signal can convert the form that is suitable for driving LED to by controller, and it can comprise that control is added to electric current, amplitude, duration or the waveform of the signal on the LED.This controller can be pulse width modulator, Pulse Width Modulator, pulse displacement modulator, resistor ladder, current source, voltage source, voltage ladder, switch, transistor, voltage controller or other controller.

[0010] U.S. Patent No. 6,975, and 079 has described method and system, and the data input that is used to control giving the computer based photosystem converts illumination control signal to.This method and system comprises the facility that is used to be controlled at the nonlinear relationship between data input and the illumination control signal output.Nonlinear relationship can be programmed the beholder that the considers light source response for the variation of the different intensities of light source.This illuminator comprises the light source such as LED, and it is in response to control signal, electric current or the like--such as width modulation (PWM) control signal--and the light of generation varying strength.

[0011] U.S. Patent No. 6,897, and 624 have described a kind of intelligent lighting equipment, and it can received signal and changes lighting condition as the result of received signal.This light fixture can change tone, saturation degree and brightness in response to the signal that receives.This light fixture comprises controller, the output of its control example such as LED.This controller can be pulse width modulator, Pulse Width Modulator, pulse displacement modulator, resistor ladder, current source, voltage source, voltage ladder, voltage controller or other power controller.

[0012] problem of pulse width modulation controlled is need be from the character in cycle of the electric power of power supply.For example, if single power supply is just providing electric power to give a plurality of electron devices of identical switching frequency operation, then can cause the periodic non-homogeneous load on the power supply.

[0013] U.S. Patent No. 6,972, and 534 have described a kind of control system that is used for motor, the delay that its compensation is introduced by the variable-delay random width modulation.This control system has pulse width modulation module at random, and it produces switching cycle and postpones for current round-robin.This control system also has the phasing degree compensating module, and it amounts to sampling rate, the switching cycle of half and former round-robin delay, and exports a time-delay subsequently.The phasing degree compensating module also multiplies each other this time-delay and electric angle velocity amplitude, and produces offset angle.

[0014] U.S. Patent No. 6,600, and 669 have described a kind of system and method that is used for carrying out at the electronic power transducer width modulation at random.The sampling round-robin sampling period that is used for width modulation keeps constant, and the switch round-robin cycle changes.Change the switch round-robin cycle by the delay of using random number to calculate between (coincident) sampling that is harmonious and switch round-robin begin.

[0015] for the operation of the electron device that uses width modulation, typically, use special microcontroller, it comprises the special PWM unit of chip-scale.So this configuration can cause being used for the more expensive design of the control system of electron device, because need special parts, rather than more cheap universal component, for example general purpose microprocessor usually.

[0016] in addition, the above-mentioned patent that relates to width modulation at random is aimed at the variation of switch round-robin.When response time of load (being electron device) during widely less than switching cycle, this variation of PWM switching frequency can be acceptable.Yet if the load responding time is similar to switching cycle, these change the switch round-robin and can cause undesired influence to the operation of load (being electron device).

[0017] so, need a kind of new method and apparatus that be used to control the activation of electron device.

[0018] this background information is provided to disclose the applicant and thinks it may is information related to the present invention.Not necessarily mean and admit, also should not be interpreted as any above-mentioned information and constitute prior art with respect to the present invention.

Brief summary of the invention

[0019] the purpose of this invention is to provide a kind of equipment and method that is used to control the activation of electron device.According to one aspect of the present invention, a kind of method that is used to control the activation of electron device is provided, this method may further comprise the steps: obtain the activation of the wanting ratio for predetermined amount of time, this activates the ratio than relative this predetermined amount of time of section turn-on time of representing electron device; Be identified for the activation sequence of electron device, this activation sequence comprises two or more activationary time sections and one or more deactivation time period, and wherein the ratio of relative this predetermined amount of time of these two or more activationary time sections equals this activation ratio.

[0020] according to another aspect of the present invention, a kind of equipment that is used to control the activation of electron device is provided, this equipment comprises: be used to obtain the device for the activation of the wanting ratio of predetermined amount of time, this activates the ratio than relative this predetermined amount of time of section turn-on time of representing electron device; Be used for being identified for the device of the activation sequence of electron device, this activation sequence comprises two or more activationary time sections and one or more deactivation time period, and wherein the ratio of relative this predetermined amount of time of these two or more activationary time sections equals this activation ratio.

[0021] according to another aspect of the present invention, a kind of equipment that is used to control the activation of electron device is provided, this equipment comprises: controller, be configured to receive the activation of wanting ratio for predetermined amount of time, this controller also is configured to visit described storer and definite activation sequence corresponding to the activation ratio of wanting, and this controller is configured to according to determined activation than generating control signal and control signal being sent to electron device.

[0022] according to another aspect of the present invention, a kind of computer program that comprises computer-readable medium is provided, this computer-readable medium records statement and instruction thereon, be used for carrying out the method for carrying out the activation that is used to control electron device by processor, this method may further comprise the steps: obtain the activation of the wanting ratio for predetermined amount of time, this activates the ratio than relative this predetermined amount of time of section turn-on time of representing electron device; Determine the activation sequence of electron device, this activation sequence comprises two or more activationary time sections and one or more deactivation time period, and wherein the ratio of relative this predetermined amount of time of these two or more activationary time sections equals this activation ratio.

Description of drawings

[0023] Fig. 1 diagram is according to two pulse width modulation cycle prior art, that be used to control electron device.

[0024] Fig. 2 diagram is according to two circulations of activation one embodiment of the present of invention, that be used to control electron device.

[0025] Fig. 3 diagram is according to the rotation of the Bit String of one embodiment of the present of invention.

[0026] Fig. 4 diagram is according to the embodiment of the equipment of activation one embodiment of the present of invention, that be used to control electron device.

[0027] Fig. 5 is the process flow diagram of diagram according to the control method of one embodiment of the present of invention.

[0028] Fig. 6 is the process flow diagram of diagram according to the control method of an alternative embodiment of the invention.

[0029] realization of Fig. 7 diagram control method as shown in Figure 6.

[0030] another realization of Fig. 8 diagram control method as shown in Figure 6.

[0031] another realization of Fig. 9 diagram control method as shown in Figure 6.

Detailed description of the invention

Definition

[0032] term " electron device " operation level that is used for defining wherein it depends on the voltage that is provided on it or the equipment of electric current.The miscellaneous equipment that the example of electron device comprises light-emitting component, DC motor, laser diode and needs electric current to adjust will easily be understood as those skilled in the art.

[0033] term " light-emitting component " is used for definition when by for example striding its two ends when applying potential difference (PD) or making it flow through electric current and be activated, in zone of electromagnetic spectrum or regional combination--for example in visible region, infrared region and/or ultraviolet region--device of emitted radiation.So light-emitting component can have monochrome, accurate monochrome, polychrome or broadband spectral emission characteristics.The example of light-emitting component comprises the light emitting diode of the phosphors coating of semiconductor, organic or polymer/polymeric light emitting diode, optical pumping, nanocrystal light emitting diode or other similar device of optical pumping, will easily understand as those skilled in the art.

[0034] term " controller " is used for defining such computing equipment or microcontroller, it has CPU (central processing unit) (CPU) and peripheral input-output apparatus (such as A/D or D/A converter), so that monitor from the parameter that is coupled to the peripherals of controller with being operated.These input-output apparatus also can allow CPU communication and control to be coupled to the peripherals of controller with being operated.Controller randomly can comprise one or more medium, is referred to as " storer " here.Storer can be volatibility and non-volatile computer memory, such as RAM, PROM, EPROM, EEPROM, disk, CD, tape or the like, the control program (such as software, microcode or firmware) that is used to monitor or control the equipment that is coupled to controller is stored in wherein, and is carried out by CPU.Randomly, controller also provides user-defined service condition is converted to the device that control signal is controlled the peripherals that is coupled to controller.Controller can be via user interface--for example keyboard, touch pad, touch screen, control desk, input equipment visual or acoustics--receives user-defined order, as well known to those skilled in the art.Term " controller " additionally can be used for describing field programmable gate array (FPGA) and special IC (ASIC) or other device that is suitable for, as well known by persons skilled in the art.

[0035] as used herein, term " approximately " be meant from nominal value+/-10% variation.Be included in any given numerical value that provides here always should be appreciated that such variation, no matter whether it is mentioned clearly.

[0036] unless otherwise defined, otherwise all technology used herein and scientific terminology all have with the present invention under the identical meaning of technician's common sense in the field.

[0037] the invention provides a kind of equipment and method that is used to control the activation of electron device.For the activation ratio of wanting,, wherein activate than the ratio of relative " shutoff " time of " connections " time of electron device of definition for section preset time according to method and apparatus of the present invention assessment activation sequence.Activation sequence comprises two or more activationary time sections and one or more deactivation time period, wherein the activation ratio that equals to want of the ratio between these two or more activationary time sections and given time period.

[0038] according to equipment of the present invention and method for preset time section be divided into two or more activationary time sections again by activating single activationary time span than definition for section preset time.The processing procedure of dividing single activationary time span again can be performed so that can reappear ground (reproducibly) determines two or more activationary time sections, maybe can be performed to become to make these two or more activationary time sections to be determined randomly basically.

[0039] activation of electron device can be performed with a plurality of level of resolution R, wherein level of resolution defines the granularity of the possible controlled stage of electron device, the number of Li San activation level for example, they can be defined by the bit number of the numerically controlled information that relevant electron device is provided.For example, can have 4 different working levels, promptly 2 with the controlled electron device of 2 bit resolution levels ²Similarly, can have 256 different working levels, promptly 2 with the controlled electron device of 8 bit resolution levels ⁸

Activation sequence generates

[0040] in one embodiment of the invention, than A, for given time period TP, the activationary time section of activation sequence is determined so that they meet the following conditions for given activation:

$\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{P}_i\left(t\right)=A*\mathrm{TP}---\left(1\right)$

P wherein _i(t) be the duration of i make pulse, and N is the number of activationary time section.

[0041] in another embodiment of the present invention, the activationary time section of activation sequence is determined so that meet the following conditions:

$\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{P}_i\left(t\right)=A^m*\mathrm{TP}---\left(2\right)$

Here m can be selected as integer, and for example 2 or 3.For example, particularly about the activation of light-emitting component, a m can allow light-emitting component intensity to be proportional to activate ratio square or cube, follow the square-law deepening or the cubic law deepening of light source thus basically respectively.

[0042] in another embodiment of the present invention, for given time period TP and level of resolution R, the activationary time section ONtimeP of activation sequence _iWith deactivation time period OFFtimeP _jBe determined so that they meet the following conditions:

$\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\mathrm{ONtime}{P}_i+\underset{j=1}{\overset{M}{\mathrm{\Σ}}}\mathrm{OFFtime}{P}_j=\mathrm{TP}---\left(3\right)$

Here N+M=R, wherein N is the number with pulse turn-on time of length t, M is the number with turn-off time pulse of length t, N/M=A, it is to activate ratio, and TP=2 ^RT, wherein t is the minimum length of the pulse that can be generated by controller.

[0043] in one embodiment of the invention, each activationary time section of activation sequence is selected randomly, as long as satisfy above one of them condition by equation 1 or 2 or 3 definition.For the generation at random of activationary time section, controller can be configured to carry out basically formation sequence at random, so that determine one or more activationary time section.In one embodiment, randomizer can use the clock time of controller as the seed that is used for randomizer, and wherein this clock time for example can be represented the time of the initial power-up of controller.The assessment of other seed the person skilled in the art will easily understand.

[0044] yet, in fact, the determining at random of the activationary time section of activation sequence, with the activation of wanting of electron device than and available control resolution level be linked.For example, for given level of resolution, when activating when reducing, reduce for the number of the possible different activationary time section of activation sequence, because the activationary time section can have the possible time span of minimum.

[0045] in one embodiment, assess one or more activationary time section according to predetermined criteria or formula.

[0046] in one embodiment of the invention, the first activationary time section can be defined in the minimum activationary time section that is generated behind the level of resolution of given assignment and the predetermined amount of time.For example, the horizontal R of given 8 bit resolutions is so have 256 (2 basically ⁸) rank of individual discrete control electron device.And after controlled frequency was 30kHz, predetermined amount of time equaled about 33.33 microseconds given for example.So, example hereto, minimum activationary time section equals about 130 nanoseconds (33.33 microseconds/256).

[0047] in another embodiment of the present invention, minimum activationary time section also depends on the central clock that is associated with the controller of carrying out calculating except depending on execution needed processing power of method of the present invention and calculated amount.

[0048] Fig. 2 diagram is according to two different activation sequences of one embodiment of the present of invention configuration.For Fig. 2, activate the activation ratio that defines by periodicity pulse-width signal shown in Figure 1 than being.As shown in the figure, in each predetermined amount of time 20, activation sequence according to this embodiment definition comprises four activationary time sections, and wherein activationary time section 30,40,50 and 60 summation equal the time period by make pulse width (being illustrated as 10 on Fig. 1) definition.Similarly, activationary time section 70,80,90 and 100 summation also equal the time period by same make pulse width definition.According to other embodiments of the invention, the number of activationary time section for example can be 2,3,5,6 or more.

[0049] in one embodiment of the invention, the storer that is associated with controller can be used for storing one group of activation sequence of assessment in advance, each activation sequence with activate than being associated, this activations is compared by the level of resolution that is associated with the operant level of electron device and is defined.

[0050] in one embodiment, for R bit resolution level and N activationary time section, storer can be stored R ²N has 2 ^RThe Bit String of bit, each string list show an activation sequence.In this configuration, each Bit String activates ratio with the binary format representative.In sort memory storage configuration, the firm data that relate to specific activation ratio of receiving, controller just can extract information or the Bit String that is identified from storer, so that determine activation sequence.

[0051] in another embodiment, for R bit resolution level, storer can store 2 ^RIndividual have 2 ^RThe Bit String of bit, each string list show an activation sequence.In this configuration, each Bit String activates ratio with the binary format representative.In sort memory storage configuration, the firm data that relate to specific activation ratio of receiving, controller just can extract information or the Bit String that is identified from storer, so that determine activation sequence.

[0052] in another embodiment of the present invention, by only storing 1/2R ²N has 2 ^RThe Bit String of bit, each string list show two activation sequences, and the saving of storer can be provided.First activation sequence is by this string representative, and second activation sequence is represented by bit reversal (inversion) by this string.In the sort memory configuration, controller receives the data that relate to specific activation ratio, and works as this Data Identification less than 1/2R ²During the Bit String of N, controller extracts information or the Bit String that is identified from storer, so that determine activation sequence.Yet, when this Data Identification more than or equal to 1/2R ²During the Bit String of N, controller extracts complementary (complementary) information from storer, this complementary information that reverses subsequently, and use this complementary information or Bit String to determine activation sequence.

[0053] in another embodiment of the present invention, by only storing 1/2 2 ^RIndividual have 2 ^RThe Bit String of bit, each string list show two activation sequences, and the saving of storer can be provided.First activation sequence is by this string representative, and second activation sequence is by the counter-rotating representative of this string.In the sort memory configuration, controller receives the data that relate to specific activation ratio, and works as this Data Identification less than 1/2 2 ^RBit String the time, controller extracts information or the Bit String that is identified from storer, so that determine activation sequence.Yet, when this Data Identification more than or equal to 1/2 2 ^RBit String the time, controller extracts complementary information from storer, this complementary information that reverses subsequently, and use the complementary information or the Bit String of counter-rotating to determine activation sequence.

[0054] in one embodiment of the invention, before the output activation sequence, the information of extracting from storer is for example rotated basically randomly by controller.The example of information or Bit String rotation is illustrated in Fig. 3.In this example, information is configured to 8 Bit Strings 300, and firm extraction string 300, and this is gone here and there just to three bits of right rotation, causes Bit String 310.In this example, for each bit assignment a letter, to be convenient to quote the bit position.

[0055] in one embodiment of the invention, the Bit String of expression activation sequence can be rotated basically randomly for each time period.This process can reduce for example transformer and the electromagnetic interference (EMI) of wire-wound inductor device and the possibility of acoustic resonance of power supply thus so that can reduce the harmonic components of control signal.

[0056] in another embodiment of the present invention, for R bit resolution level and therefore each activationary time section 2 ^RBit, the order of the bit in each Bit String is for example shuffled by pseudorandom ground by using linear session to shuffle (shuffle) algorithm, and described linear session shuffles all Fisher-Yates (Fei Xue-Ye Ci) shuffle of description in Mark C.Wilson " Random and Exhaustive Generation ofPermutations and Cycles " for example in this way of algorithm.The example that linear session shuffles algorithm can define with false code as follows:

FOR?i＝2 ^R-1?TO?1

r＝rand(0，i)

tmp＝bit_string[i]

bit_string[i]＝bit_string[r]

bit_string[r]＝tmp

ENDFOR

Here i, r and tmp are interim integer variables, and rand (0, be to return one i) at 0 the function of pseudorandom integer in the i scope.Like this,, resemble such as the pulse width signal shown in Fig. 1 and can be converted into randomized Bit String according to the present invention for example according to equation 1, and need be in storer (for example ROM (read-only memory)) storing predetermined Bit String.

[0057] in another embodiment of the present invention, for R bit resolution level and therefore each activationary time section 2 ^RBit, Bit String can be divided into 2 ^S2 of individual sequence arrangement ^R-SThe group of individual bit, and described group order in each Bit String can be for example by using linear session shuffle algorithm (shuffling) such as Fisher-Yates by pseudorandom shuffle.This embodiment of the present invention can have following advantage: each Bit String is randomized with the calculation requirement that reduces, and for example calculation requirement has an appointment 2 ^R-SReducing doubly.

[0058] in one embodiment of the invention, to carry out the assessment of activation sequence greater than the refresh rate of about 100Hz, in another embodiment, refresh rate is about 200Hz.

[0059] in one embodiment of the invention, described control method and equipment can be used in the light fixture that operation comprises one or more light-emitting component.In this embodiment of the present invention, the switching speed of light-emitting component should be greater than the fusion rate (fusion rate) of human eye, for example greater than between about 60 to 100Hz, so that guarantee to be rendered as this radiative time averaging brightness, and be not rendered as the sequence of light pulse by the light of this one or more light-emitting component emission.In an alternate embodiment of the invention, the switching speed of light-emitting component is configured to greater than 200Hz or 500Hz or higher.

[0060] in another embodiment, a plurality of activation sequences can be synchronous, each Bit String is rotated independently and at random the bit of number basically.In this embodiment, even all passages are set to identical activation ratio, will be incoherent typically for the output string that each passage is determined, cause the load of the substantial constant of power supply thus.

[0061] in one embodiment of the invention, can be used in slave controller and export the number that the number of the passage of activation sequence can depend on general I/O (GPIO) passage that is associated with controller (for example CPU).

[0062] in one embodiment of the invention, the controller that is used for carrying out according to method of the present invention can be configured to have two CPU architectures.This configuration of controller can be used in communicates by letter with one or more peripheral control unit and is used to generate activation sequence.For example, a CPU can be configured to communication processor, and it can receive the input data and offer the 2nd CPU with an instruction relevant with the generation of activation sequence.The 2nd CPU also can be configured to export the activation sequence of being assessed that is used for one or more electron device.

[0063] in one embodiment of the invention, asynchronous by the activation sequence of controller generation with other activation sequence.In this configuration, if a plurality of electron device can drawn a controller control of power from single power supply, then the asynchronous system of a plurality of activation sequences can cause the load of needed electric power to the substantial constant on the power supply of electron device is being provided.

[0064] in another embodiment of the present invention, can be configured to for example firmware or software according to method of the present invention.In this configuration, any basically controller or microprocessor all can be configured to carry out according to method of the present invention.

[0065] in another embodiment of the present invention, level of resolution can at random be selected according to the operation granular level of wanting of this one or more electron device.But selected level of resolution controlled device makes and is used for assessing activation sequence and does not need to reconfigure controller, can be provided by firmware or the software that is stored in the storer of controller because be used for generating the functional of controller of activation sequence.

Equipment

[0066] in Fig. 4, illustrates a kind of equipment according to activation one embodiment of the present of invention, that be used to control electron device.Controller 410 receives the input data 420 that can define the level of resolution of wanting.This controller can reference-to storage 430, storer 430 comprises a series of instructions according to the embodiment of the invention, when these instructed the CPU (central processing unit) execution that is associated with controller, it enabled this controller and calculates and generate activation sequence to be used to control the activation of one or more electron device 400 that is associated with it.This activation sequence can be sent to electron device with the form with the compatible mutually control signal 440 of controlled electron device by controller.

[0067] referring now to specific example the present invention is described.Understand that following example plans to be used for describing embodiments of the invention, but in no case plan is used for limiting the present invention.

Example

[0068] Fig. 5 provides the process flow diagram of diagram according to the control method of one embodiment of the invention.Initially, level of resolution R is set, and is identified for the number N UM_CHAN of the passage of data transmission according to hardware configuration.These parameters are provided for the means as the storer of the Configuration Control Unit that takes place in step 41.After configuration, controller carried out via the circulation of step 42 to 47 continuously for each time cycle.The activation that representative is wanted is received in step 43 asynchronously than the input data of A, and wherein it is stored among the storer newData (new data).Begin the place at each time cycle round-robin, these data are compared with the current data that are stored among the storer oldData (legacy data).If new data is different from legacy data, then in step 44 new data replace old data.Then, in step 45, use the input data to generate and be used for random bit sequence each passage, new, wherein function C onvertInput (conversion input) initialization has 2 ^R* the two-dimensional bits array matrixRows (row matrix) of NUM_CHAN element, the wherein capable Bit String of representing the control channel of an association that is used for it of each NUM_CHAN.If new data is identical with legacy data, then control flow directly enters step 47 from step 42.

[0069] in step 47, function G enerateSignal (generation signal) rotates the Bit String of every row among the matrixRows randomly, then, synchronously exports NUM_CHAN Bit String data with serial mode before control is turned back to step 42.

[0070] Fig. 6 provides the process flow diagram of diagram according to the control method of another embodiment of the present invention.Initially, level of resolution R is set, and is identified for the number N UM_CHAN of the passage of data transmission according to hardware configuration.These parameters are provided for the means as the storer of the Configuration Control Unit that takes place in step 21.Data are constantly exported.If refresh cycle is finished, then calculate new data (outputData (output data)), and by using function void GenerateSignal (byteoutputData[2 ^R]) step 27 sends to controller output to these data.In case all level of resolution (2 ^R) all controlled device output, just finish refresh cycle.

[0071], receive new data by ReceiveData (), and it be stored in inputData[NUM_CHAN in step 23] array.Be identified for each element, new at random the sequence basically of the array that defines in storer subsequently, wherein ConvertInput step 25 generates and has [2 ^R] the two-dimensional bits array of [NUM_CHAN] individual element.This two-dimensional array is used as (the byte matrixRows[2 for TransposeMatrix (transposed matrix) in step 26 subsequently ^R] [NUM_CHAN]) and input.This function is got input matrix [2 ^R] [NUM_CHAN] matrixRows, read its row, it is stored in byte outputData[2 ^R] in, the latter is used as input by GenerateSignal function 27.

[0072] as shown in Figure 6, diagram can implement with firmware according to the process flow diagram of the control method of the embodiment of the invention.Illustrating a kind of firmware according to one embodiment of the present of invention in Fig. 7 realizes.

[0073] pay close attention to Fig. 7, input 510 is corresponding to ReceiveData step 23 shown in Figure 6.The data that receive comprise NUM_CHAN word, each word R bit, and wherein R is a level of resolution.For illustrational purpose, on Fig. 7, only illustrate a passage.The word of each reception is translated into asynchronously by look-up table 520 has 2 ^RThe Bit String of bit, this look-up table 520 comprises 2 ^RIndividual word.

[0074] clock 560 has TP/2 ^RCycle, wherein TP is the time cycle, and each time clock makes randomizer 570 sum counters 580 add increment.Whenever counter 580 upsets 2 ^RDuring inferior counting, its generates an output pulse.This pulse causes that the shift register 530 that walks abreast/walk abreast out is latched in its current content in its output, loads then by 2 of look-up table 520 generations ^RBit String.This pulse also causes to walk abreast and goes out shift register 540 and latch its input from shift register 530 into/serial.

[0075] least significant bit (LSB) of randomizer 570 is connected to the displacement control of shift register 530, and the serial of shift register 530 output is connected to the serial input of shift register 540.Therefore, from 2 of look-up table 520 loadings ^RBit String is reached each time cycle (2 by rotation randomly ^R-1) bit.

[0076] randomizer 570 can be for example by using linear feedback shift register to implement with hardware, as well known by persons skilled in the art.For example, output terminal 3,12,14 and 15 is by XOR and be fed 16 bit serials that are fed back into and go into/walk abreast out the 16 bit pseudo-random numbers that shift register has generation 65,535 sequence lengths.

[0077] in case shift register 540 latchs its input, each pulse that comes self-clock 560 realizes the TransposeMatrix function 26 as being identified among Fig. 6 thus just one of its content displacement.

[0078] serial of shift register 540 output generates the pseudo-random pulse coded data that is used for output device 550 thus.Just as can be appreciated, each passage need it input 510, look-up table 520, walk abreast into/the shift register 530 that walks abreast out, walking abreast goes out shift register 540 and output device 550 into/serial.These parts by common clock 560, randomizer 570 sum counters 580 synchronously regularly.

[0079] by further with reference to as shown in Figure 6, diagram is according to the process flow diagram of the control method of embodiments of the invention, according to an alternative embodiment of the invention, this method can be implemented with firmware as shown in Figure 8.

[0080] pay close attention to Fig. 8, input 710 is corresponding to ReceiveData step 23 shown in Figure 6.The data that receive comprise NUM_CHAN word, each word R bit, and wherein R is a level of resolution.For illustrational purpose, on Fig. 7, only illustrate a passage.The word of each reception is translated into asynchronously by look-up table 720 has 2 ^RThe Bit String of bit, this look-up table 720 comprises 2 ^RIndividual word.

[0081] clock 760 has TP/2 ^RCycle, wherein TP is the time cycle, each time clock makes counter 780 and 790 add increment, and the content of shift register 740 is shifted.By with door 800, each time clock also is shifted the content of shift register 730.Whenever counter 780 upsets 2 ^RDuring inferior counting, its generates an output pulse.This pulse causes to walk abreast and is latched in its current content of its output terminal into/the shift register 730 that walks abreast out, load then by look-up table 720 generate 2 ^RBit String.This pulse also causes to walk abreast and goes out shift register 740 and latch its input from shift register 730 into/serial, and causes that randomizer 770 generates a R bit random number, and reset counter 790.

[0082] randomizer 770 can be for example by using linear feedback shift register to implement with hardware, as well known by persons skilled in the art.For example, the 16 bit pseudo-random numbers that shift register has generation 65,535 sequence lengths are gone into/walked abreast out to output terminal 3,12,14 and 15 by XOR and 16 bit serials that are fed back to input.

[0083] output of the R bit of randomizer 770 is connected to the comparison input end of R bit counter 790.When the output of counter 790 equaled the numerical value of random number, its output of counter 790 was set to low, thus the further bit displacement of disable shift register 730, till counter is reset.Therefore, from 2 of look-up table 720 loadings ^RBit String is reached each time cycle (2 by rotation randomly ^R-1) bit.

[0084] in case shift register 740 latchs its input, each pulse that comes self-clock 760 realizes the TransposeMatrix function 26 as being identified among Fig. 6 thus just one of its content displacement.

[0085] serial of shift register 740 output generates the pseudo-random pulse coded data that is used for output device 750 thus.Just as can be appreciated, each passage need it input 710, look-up table 720, walk abreast into/the shift register 730 that walks abreast out, walking abreast goes out shift register 740 and output device 750 into/serial.These parts by common clock 760, randomizer 770, counter 780 and 790 and with door 800 synchronously regularly.

[0086] by more further with reference to as shown in Figure 6, diagram is according to the process flow diagram of the control method of embodiments of the invention, according to another embodiment of the present invention, this method can be implemented as illustrated in fig. 9.

[0087] pay close attention to Fig. 9 particularly, N input 600,602 ... each of 605 (wherein ' N ' represent number of active lanes) is provided to high impedance output forbids, and is imported by the parallel look-up table 620 that is connected to.1:N demultiplexer 630 be inserted in look-up table 620 output with N walk abreast into/the shift register 640,641 that walks abreast out ... between 645.Input 600,601 ... 605 and demultiplexer 630 then by select progressively, to obtain N Bit String corresponding to N input word.

[0088] as those skilled in the art will recognize that, Ding Yi circuit can be implemented with hardware by using other hardware that field programmable gate array (FPGA) for example or special IC (ASIC) or those skilled in the art understand easily here.

[0089] though should be appreciated that illustrative purposes has been described specific embodiment of the present invention here for example, can under the situation that does not deviate from the spirit and scope of the present invention, make various modifications.All belong in the scope of the present invention particularly: the computer program or program element or program storage device or the memory devices that are provided for coming the operation of control computer according to method of the present invention, allly be used to store the solid or liquid transmission medium of machine-readable signal, lead magnetic or light, band or dish or the like in this way, and/or make up its parts according to system of the present invention.

[0090] and, each step of this method can be performed on controller--and for example be computing equipment or microcontroller with CPU (central processing unit) (CPU) etc., one or more of the object that generates according to program element, module or from any programming language, or one or more a part such as C++, Java, P1/1 or the like.In addition, each step or implement the file of described step or object or the like can be carried out by the specialized hardware or the circuit module of design for this reason.

[0091] obvious, the above embodiments of the present invention are exemplary, and can change in many ways.Present or variation in the future so is not looked at as and deviates from the spirit and scope of the present invention, and conspicuous for those skilled in the art all such modifications are planned to be included in the scope of following claim.

The disclosure of all patents of [0092] mentioning in this manual, publication (comprising the patented claim of announcement) and database entry are quoted by integral body clearly to be merged, its degree that reaches just as each so individual patent, publication and database entry by clearly with each be designated as and be by reference and merge.

Claims (18)

1. method that is used to control the activation of electron device, this method may further comprise the steps:

A) acquisition is for the activation of the wanting ratio of predetermined amount of time, and this activates the ratio than relative this predetermined amount of time of section turn-on time of representing electron device;

B) be identified for the activation sequence of electron device, this activation sequence comprises two or more activationary time sections and one or more deactivation time period, wherein these two or more activationary time sections relatively the ratio of this predetermined amount of time equal this activations and compare.

2. according to the process of claim 1 wherein during the step of determining activation sequence, these two or more activationary time sections can be determined with reappearing.

3. according to the process of claim 1 wherein that these two or more activationary time sections are determined randomly during the step of determining activation sequence.

4. according to the process of claim 1 wherein that one of them of this two or more activationary time sections is defined within minimum activationary time section, activationary time section indication level of resolution and this predetermined amount of time that wherein should minimum.

5. according to the method for claim 1, wherein one of them of these two or more activationary time sections is defined within minimum activationary time section, determine that wherein activation sequence carried out by the controller with central clock, activationary time section that wherein should minimum is indicated this central clock.

6. be stored in the storer once definite according to the process of claim 1 wherein that activation sequence is firm.

7. according to the process of claim 1 wherein that activation sequence is rotated at random.

8. according to the process of claim 1 wherein that the assessment of activation sequence is refreshed with the speed greater than 100Hz.

9. according to the method for claim 8, wherein the assessment of activation sequence is refreshed with the speed of about 200Hz.

10. equipment that is used to control the activation of electron device, this equipment comprises:

A) be used to obtain device for the activation of the wanting ratio of predetermined amount of time, this activates the ratio than relative this predetermined amount of time of section turn-on time of representing electron device;

B) be used for being identified for the device of the activation sequence of electron device, this activation sequence comprises two or more activationary time sections and one or more deactivation time period, and wherein the ratio of relative this predetermined amount of time of these two or more activationary time sections equals this activation ratio.

11. the equipment according to claim 10 comprises controller, is configured to have two CPU (central processing unit) architectures.

12. according to the equipment of claim 11, wherein first CPU (central processing unit) is configured to communication processor, and second CPU (central processing unit) is configured to generate activation sequence.

13. according to the equipment of claim 10, wherein a plurality of activation sequences are evaluated and be stored in the storage arrangement, this storage arrangement is coupled to described equipment with being operated.

14. an equipment that is used to control the activation of electron device, this equipment comprises:

A) storer, be used for preserving a plurality of activation sequences, each activation sequence is directly represented specific activation ratio and predetermined amount of time, each activation sequence comprises two or more activationary time sections and one or more deactivation time period, and wherein the ratio of relative this predetermined amount of time of these two or more activationary time sections equals this specific activation ratio;

B) controller, be configured to receive the activation of wanting ratio for predetermined amount of time, this controller also is configured to visit described storer and definite activation sequence corresponding to the activation ratio of wanting, and this controller is configured to generate control signal and this control signal is sent to electron device according to determined activation ratio.

15. according to the equipment of claim 14, wherein this storer activates than comprising an activation sequence for each.

16. according to the equipment of claim 14, wherein this storer is that two relevant activation ratios comprise an activation sequence.

17. according to the equipment of claim 16, one of them activation sequence is directly represented first in two relevant activation ratios, and the counter-rotating of this activation sequence is directly represented second in these two the relevant activation ratios.

18. a computer program that comprises computer-readable medium, this computer-readable medium records statement and instruction thereon, is used for being carried out so that carry out the method for the activation that is used to control electron device by processor, and this method may further comprise the steps:

A) acquisition is for the activation of the wanting ratio of predetermined amount of time, and this activates the ratio than relative this predetermined amount of time of section turn-on time of representing electron device;

B) be identified for the activation sequence of this electron device, this activation sequence comprises two or more activationary time sections and one or more deactivation time period, wherein these two or more activationary time sections relatively the ratio of this predetermined amount of time equal this activations and compare.

Images