TW200822102A - A system and method of controlling the power of a radiation source - Google Patents

Abstract

A system for controlling the power of a radiation source comprises a sensor FS, a feedback network FN and a radiation source power control circuit LPCC. The sensor receives a portion of a radiation beam LBP generated by a radiation source LS and provides an analogue signal AFS representative of a radiation source power. The feedback network FN is connected to the sensor FS. The radiation source power control circuit LPCC is connected to the feedback network FN and to the radiation source LS. The feedback network FN comprises a runlength compensating module RCM comprising: - a sampling module SM providing a digital signal DFS based on the analogue signal AFS, - at least one error controlling signal generator ECSG performing an amplitude compensation and providing at least one digital error controlling signal ECS to the radiation source power control circuit LPCC in order to control the power of the radiation source LS.

Description

200822102 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION One aspect of the present invention relates to a data recording apparatus. Specific and + The present invention relates to a system for controlling the power of a radiation source used in a data recording device. A particular application of the invention relates to an optical data recording device that uses a laser to read and write data on an optical brother carrier. Another aspect of the invention is directed to a method of controlling the power of a light source used in a data recording device. (Previous technique) Document US Pat. No. 2/016798 discloses a laser driver having a noise reduction feedback for optical storage applications. To provide a low noise laser beam, a noise reduction signal is provided and the signal is provided. Providing a laser to the laser's own noise reduction feedback network. To generate a noise reduction signal, monitor the operation of the laser and feedback the signal as a direct result of this monitoring. Monitor the laser beam from the self-operated laser The fast forward sensing detector is implemented to provide an amplifier from the fast forward I, the output of the sensing detector to the amplifier that inverts and amplifies the signal. Then, the noise reduction feedback network receives the amplified Signal, properly filter this signal and provide it to the laser itself to reduce noise in the laser beam in the frequency band important to the recorded data from the optical media. The noise reduction feedback signal, 乂 /, is sufficient Back impedance so as not to interfere with the traditional continuous wave operation of the laser and avoid the interference of conventional RF modulation of the laser. ', "However, the noise of this laser control system reduces the amplitude of the feedback signal with the light The length of the mark or space on the carrier track (also known as the scan length) is specific to the text, and this amplitude change occurs during the recording of the data (eg H6295.doc 200822102 during the writing of the mark). A bad increase in noise. "The signal of the radiation power" [Invention] It is an object of the present invention to provide a system for controlling the power of a radiation source used in a data recording device, 苴" At least one of the technical drawbacks is, in particular, its improved laser power control. According to one aspect of the invention, the radiated J raw power control system comprises: a salt detector that receives the light generated by the radiation source " Μ π 1 ? a portion of the beam and providing an analog signal indicative of the power of the radiation source; a U-turn, a loop, connected to the sensor; and a #§ source power control circuit, Connected to the feedback network and connected to the radiation source. The feedback network includes a scanning long-food supplement group, scanning length compensation 杈, and package 3 · sampling module, the base is not 'source power analog signal And k for the digital signal; and at least the main decision control signal generator, 苴 performing amplitude compensation and providing at least one digit 4, ^^ digital no difference control signal to the radiation source power control circuit for controlling the power of the radiation source. The module can be combined with a _ + cat + m 匕 3 analog pre-processing module and a analog-to-digital conversion s sampling module to provide a digital signal representing the power of the light source. The error control signal generator can include a positive And a partitioning module, a counting module, a lookup table module and a multiplier. The integrating and dividing module and the counting group receive a digital signal representing the power of the radiation source and at least one time suppression. Based on at least one timing signal During the duration of the integration, the modulo_ is cumulatively represented by (four) a plurality of samples of the digital signal of the source power and the sum is determined by a count of the plurality of samples representing the digits of the light source power by counting And determine the scan length. The integration and partitioning module calculates the average of the plurality of samples by dividing the sum of the scan lengths by 116295.doc 200822102. A lookup table module coupled to the counting group determines the scaling factor based on the length of the scan. The multiplier coupled to the lookup table module and the integration and division module calculates the converted value of the plurality of samples by multiplying the average of the plurality of samples by the conversion factor. Optionally, the error control signal generator can further include at least one digit post processing module coupled to the multiplier and providing the post processed digital error control to the radiation source power control circuit.

Optionally, a time multiplexer is connected between the multiplier and the at least one post-processing module, and the multiplexer receives the delta timing signal and the threshold timing signal and the digital delta signal or The threshold signal is provided to the light source power control circuit. In a particular application, the light source is a laser diode that produces a laser beam, and the sensor is an optical sensor. The optical sensor is a forward sensing predator, 1 providing a forward sensing analog signal representative of the power of the radiation source. / == Another aspect of the 'data recording device' includes a light source, ;; a light beam that can be inserted into the record carrier in the data recording device. The material recording device includes a light connection to the tomb source power control system. The method of controlling the power of a light source according to the radiation of the present invention = the aspect of the present invention comprises, for example, providing an analog signal representative of a source of power indicative of radiation-sensing of the radiation beam produced by the radiation source, - the sampling table does not light the source power rate and the like digital signal, l 提供 provides a representation of the radiation source work 116295.doc 200822102 - performs a re-compensation of the digital signal representing the (four) source (four) and will have at least one digit ♦ , ^ Digital discrete control signal is provided to the radiation source power clamping circuit to control the power of the radiation source. The amplitude compensation may comprise the following steps: - at least - the duration of the timing signal is shot 01, by accumulating a plurality of samples of the digital signal of the field, source power, and / during the duration based on the at least - timing signal By counting a plurality of samples representing the digital signal of the source power and determining the length of the plurality of samples by dividing the scan length by the sum of the scan lengths, - determining based on the scan length The conversion factor, - calculating a plurality of 7 different values by multiplying the average of the plurality of samples by a scaling factor, and generating at least one digital error control signal to the radiation source power control circuit to control the power of the radiation source. The method may further comprise the following steps as needed: zooming in to indicate a light shot

The analog signal of the U source power cancels the offset of the amplified analog signal and provides a modified analog signal. The method may further comprise the step of post processing at least one digital error control signal, as desired. In a particular application of the invention associated with an optical data recording device for using a laser for reading and writing data on an optical record carrier, the timing can be in the Delta time series signal and the threshold timing signal, and the digits The error control difficulty number can be in the digital de tower signal and the digital threshold signal. According to yet another aspect, the present invention relates to a computer program product for use in a radiation source control system. The computer program product includes a set of instructions when the 116295.doc 200822102 set of instructions is loaded into the radiation source power control system. In the meantime, it causes the light source control system to perform the method according to the invention. The converted filament sense sensing sample in the digital embodiment of the present invention allows simple and efficient processing of the delta and threshold signals. In particular, the present invention allows the generation of digital thresholds for the 柝 丨 & amp amp 亡 亡 λ λ λ λ λ 工 工 工 ( ( ( ( ( ( ( ( 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Α 丄 4 ° Therefore, the present invention allows for the quasi-deviation or noise of the threshold and the delta signal in the writing phase of the optical recording. The scan length compensation module of the laser control system according to the present invention allows the amplitude compensation mechanism to reduce the amplitude difference between different scan lengths. Therefore, the use of the present invention improves the recording performance and recording of the mouth of the device. Second: The digital embodiment of the invention allows for a reduction in the laser power control circuit, the process range/geometry sensitivity, the power consumption, and the Shi Xi area. These and other aspects of the present invention will be set forth in the following description of the embodiments described below. [Embodiment] 4

1 to 14 of Lc; a block diagram of the LCS broadcast material recording apparatus including the laser power control system of the present invention. Data record # w t 1 The operation associated with reading and writing the cassette on the optical record carrier OM is performed. Data record I w h A , — "匕έ A mechanical configuration μα, an optical head 〇H and an electric charge (partial illustration). Display the excerpt; ^ # μ, % 凌置 in the optical record carrier ΟΜ. Optical Recording 116295.doc 200822102 The carrier can have a disk shape. The surface of the path may include a second optically detectable portion (i.e., mark and space) represented by a single adjacent line from the inside of the disk to the outside of the disk. The mark and the empty f: = are different in their optical properties (for example (4) the reflection of the beam is detectable. The mechanical configuration MA is schematically and partially represented in Figure 1 - your disk is based on a constant linear velocity Mode or constant angular velocity mode and rotating horse (Ο达. Mechanical configuration MA further Xiao Dongtian recognition, 5, ^ package 3 - magnetic track scanning servo control system for optical head 〇 H relative to magnetic positioning (not shown) The circuit may further include a loading unit (not shown). The optical head _ includes a light source LS (for example, a laser diode) that generates a light beam LB (for example, a laser beam). A plurality of optical elements 〇E for guiding and focusing a portion of the radiation beam or the light beam on the track of the optical record carrier OM. The optical head 0H further comprises a means for detecting and measuring by the optical record carrier OM An optical detector on the track that detects a partially reflected laser beam detector DE (eg, a four-quadrant diode). Typically, an electronic unit includes a data encoder connected via a bus bar (eg, a Pc bus bar) , a control unit, a dielectric The circuit (for clarity, the elements have been omitted from the figure) and a laser power control system LCS. The data encoder function is to encode and decode data according to a predetermined record. The data encoder is provided for use in the optical record carrier. 〇M, 丄*马入;f indicates k and also provides timing signals. The control unit controls the magnetic record carrier OM based on commands from consumer electronic devices (audio devices, video devices, computers, televisions, etc.) Scanning and reading of information. Interface circuit 116295.doc -10- 200822102 allows the data recording device to be connected to other electronic circuits included in the consumer electronic device. The laser power control system LCS provides a laser power control signal PCS To the optical head 〇H to set the write power of the laser source LS. The pass band, the laser power control circuit operates on three input signals to control the laser power. These input signals are called delta signals. , the threshold signal and the aipha signal. The Aval signal is the digital signal provided by the detector. ζ\ The field power control system LCS contains a light a sensor FS, a feedback network FN and a laser power control circuit [pee. The optical sensor FS receives a portion of the LBP of the radiation beam generated by the radiation source LS, such as a laser beam generated by a laser diode A portion of the radiation beam is provided by a beam splitter of the optical element 〇 E. The optical sensor FS can be a forward sense transducer FS. The forward sense transducer Fs provides an analog signal representative of the laser power AFS (ie, analog forward sensing signal) The optical sensor FS is connected to the feedback network fn. One of the feedback networks FN is connected to the laser power control circuit LPCC. The feedback network FN includes a scan length compensation mode. The group rcm. The scan length compensation module RCM includes a sampling module sm and an error control signal generated as an ECSG. The sampling module SM provides a digital signal DFS based on the analog signal afs representing the laser power. The error control signal generator ecSG performs an operation of amplitude compensation which will be explained later in detail. The error control signal generator ECSG provides at least one digital error signal £(:8 to the laser power control circuit LPCC to control the power of the laser source LS. The feedback network FN may further comprise a connection to the optical sensor fs and the scan 116295 .doc 200822102 An amplification module AMP between the length compensation modules RCM. The output of the laser power control circuit LPCC is connected to the laser source LS. The laser power control circuit LPCC provides a laser power control signal PCS. The laser power control signal PCS can be used to set the write power of the laser source LS. Fig. 2 is a block diagram schematically showing the scan length compensation module RCM of the laser control system LCS according to the first embodiment of the present invention. The scan length compensation module RCM includes a sampling module SM and an error control signal generator ECSG. The sampling module SM includes an analog preprocessing module APRO and a forward sensing analog digital converter FSADC. The digital pre-processing module APRO amplifies the analog forward sense signal AFS1 provided by the forward sense converter FS. It can also perform the offset cancellation of the analog forward sense signal. The analog forward sense signal AFS2 is digitized by a forward sense analog digital converter FSADC. The analog digital converter FSADC can be a six-bit or octet high-frequency analog / digital converter. The sampling module SM will be digital. The forward sensing signal DFS is supplied to the error control signal generator ECSG. The error control signal generator ECSG includes a delta signal generator ECSG1 and a threshold signal generator ECSG2. The delta signal generator ECSG1 includes a first Integrating and drawing a J-module ID1, a first counting module RNC1, a first look-up table module LKT1, and a first multiplier MU1. The delta signal generator further includes a first post-processing module PPR01 The threshold signal generator ECSG2 includes a second integration and division module ID2, a second counting module RNC2, a second lookup table module LKT2, and a second 116295.doc 12 200822102 multiplier MU2. The generator may further include a second post-processing module PPR02. FIG. 3 illustrates the digital forward sensing signal (current intensity IfS), the timing signal Tdel related to the delta signal, and the threshold signal respectively from top to bottom. It The sequence signal Tthr. Typically, the delta timing signal and the threshold timing signal are not in the π high state (ie, binary 1) or vice versa (ie, binary 0). f ' 1 in Figure 2 The delta signal generator ECSG1 shown in the figure performs the operation for generating the digital delta signal DSdel. The first integration and division module ID1 and the first counting module RNC1 are connected together. Both receive from the sampling module. The digital positive sense signal DFS of SM and the timing signal Ding del and Ding Ru. The input of the first lookup table module LKT1 is connected to the output of the first counting module RNC1. The input of the first multiplier MU1 is connected to the integration and division module ID 1 and the output of the first lookup table module lkt 1 。. The first post-processing module PPR01 is connected to the output of the first multiplier mui. When the delta timing signal is in a high state, a plurality of samples of the digital forward sensing signal DSF are accumulated by the first integration and division module 1〇1. When the delta timing signal Tw changes to a low state, the first counting module RNC1 determines the scanning length.

The sum of degrees. . Next, the first ~% Putian laser beam scanning optical record carrier 〇M magnetic. The first integration and division module ID1 determines that the sum corresponding to the scan length is stored in the sum register. Next, the first 116295.doc -13 - 200822102 integration and division module (1) 丨 calculates the average of the samples of the digital forward sensing signal DFS. This calculation consists in dividing the sum by the scan length. At the same time, the first lookup table module LKT1 determines the first scaling factor that matches the corresponding scan length. Next, the first multiplier Mim is the calculated value of the sample of the positive sense signal. This calculation consists in multiplying the average of the samples of the forward sensed signal by the first scaling factor. Subsequently, the first post-processing module PPR01 may further post-process the converted value to generate a digital delta signal DSdel. The first post-processing module PPR〇1 may include a low pass filter module and a gain stage module. Finally, the first integration and partitioning module ID1 is dumped, in particular the sum register is reset to wait for the next delta signal processing. The threshold signal generator ECSG2 shown in Fig. 2 performs an operation for generating the digital threshold signal DSthr. The digital threshold signal DSthr can be calculated according to a series of steps similar to the one described in the foregoing. The first integration and division module ID2 and the second counting module rNC2 are connected together. Both receive the digital forward sense signal DFS and the timing signal D10 (10) and Dingxin from the sampling module SM. The second lookup table module lkt22 inputs the output connected to the second counting module RNC2. The input of the second multiplier mu2 is connected to the output of the second integration and division module m2 and the second lookup table module [[η]. The second post-processing module PPR02 is coupled to the output of the second multiplier MU2. When the field timing signal Tthr is in a high state, a plurality of samples of the digital forward sensing signal DSF are accumulated by the second integration and division module ID2. When the field I limit time signal Tthr becomes low state, the second counting module RNC2 116295.doc -14- 200822102 determines the scan corresponding to the scan ##.帛] Integration and division model ID2 judgment (4) should be the total length of the sweep ##. The corresponding sum is stored in the sum register. Next, the second integration and division module ID2 calculates the average i of the samples of the digital forward sense U. The tenth argument is to divide the sum by the scan length. At the same time, the second lookup table module LKT2 determines a second scaling factor that matches the corresponding scan length. Next, the second multiplier MU2 calculates a scaled value of the sample of the digital forward sense signal. This calculation consists in multiplying the second scaling factor by f, the average of the samples of the digital forward sensed signal. Subsequently, the second post-processing module ppR〇2 can further post-process the converted value to generate the digital threshold signal DSthr. The second post-processing module ppR〇2 can include a low pass filter module and a gain stage module. Finally, the second integration and partitioning module ID2 is dumped, in particular the reset sum is temporarily stored in order to wait for the next threshold signal processing. Advantageously, the low pass filter modules of the first PPR01 and the second PPR〇2 post-processing module are tuned 模组 modules designed to pass all frequencies below the cutoff frequency, the cutoff frequency being determined and optimized It is used for a specific laser power control system LCS. Advantageously, the scaling factor stored in the lookup table module (the first LKT1 or the second LKT2 lookup table module) is determined by the analog bandwidth of the feedback network FN and the recording speed. The lookup table module is calibrated once for a particular laser power control system of the data recording device. Fig. 4 is a block diagram schematically showing a scan length compensation module rcM of a laser control system LCS according to a second embodiment of the present invention. The second embodiment considers the delta timing signal Tdel and the threshold timing signal 116295.doc 15 200822102 not at the same time in the high state, or conversely at the same time in the low state (see Fig. 3). The second embodiment is different from the first embodiment in that the delta signals DS de 1 and 6 are limited to the number DS thr, and the known length compensation module RC Μ shares the same 'hard body, especially the same error control signal generation. ECSG. The error control signal generator ECSG includes an integration and division module id, a counting module RNC, a lookup table module LKT, a multiplier MU and a multiplexer MT. The integration and division module ID and the counting module RNC are connected together. Both receive the digital forward sense signal DFS and the delta timing signal Tdel and the threshold timing signal Tthr from the sampling module SM. The input of the lookup table module lkt is connected to the output of the counting module RNC. The input of the multiplier MU is connected to the integration and division module ID and the output of the lookup table module LKT. The multiplexer MT is a time multiplexer. The multiplexer MT is connected to the output of the multiplier MU and receives timing signals Tdel, Tthr. The multiplexer mt considers the delta timing signal Tdel and the threshold timing signal Tthr to supply the digital delta signal DSdel or the digital threshold signal DSthr to the laser power control circuit LPCC, respectively. The error control signal generator ECSG may further comprise a delta post-processing module ppR〇1 connected to the multiplexer MT and a post-processing module PPR〇2° or the error control signal generator ECSG may further comprise a A single post-processing module (not shown) connected between the multiplier Mu and the multiplexer MT2. The decision control signal generator ECSG performs the generation of the digital delta signal DSdel or digital, respectively, according to a series of steps similar to the calculation and generation of the delta signal and the threshold signal explained in the text with respect to the first embodiment. 116295.doc -16- 200822102 Operation of the threshold signal DSthr. Because &, no further steps will be described.

For example, when the temperature rises, the laser efficiency or power current characteristics of the laser source LS will decrease. In general, data write operations require a large amount of laser power, and the power dissipation on the optical record carrier is increased during data write operations. This causes a large temperature change around the laser source 1^ region. Due to the bandwidth limitations of the laser power control system LCS, the amplitude of the analog forward sense signal AFS will vary with the length of the mark or space. The scan length compensation module RCM will provide a larger variation of the compensation analog forward sense signal AFS and provide the digital delta signal team and the digital threshold signal to the laser power control circuit. The laser power control circuit will send the power control signal PCS according to the digital delta signal DSdel and the digital threshold signal to the field source. The specific g' laser power control circuit [pec will increase the current supplied to the power control signal pcs of the laser source LS to compensate for the power loss. This will maintain a substantially constant laser power and constant recording performance. Those skilled in the art will appreciate that the error control signal generators ecsg, ECSG1, and ECSG2 can be stored in the program memory + of the laser power control circuit Lpcc. The system software includes one or more of the defined difference control signal generators ECSG, ECSG1, ECSG2, which can be executed by the laser power control circuit Lpcc. Alternatively, the error control signal generators ECSG, ECSG1, ecsg2 may be in the form of electronic circuits that are defined by hardware rather than by software. In this embodiment, the individual components of the circuit and the respective connections between the components 116295.doc -17-200822102 define one or more of the functions of the error control signal generators eCSG, ECSG1, ECSG2. In addition, the scan length compensation module RCM can be implemented in a single integrated circuit, for example, in a laser power control circuit LPCC. Those skilled in the art will appreciate that optical record carriers 〇% represent, for example, any compact disc CD or any digital versatile disc DVD or any future recording disc that supports a wide range of recordable and rewritable optical formats. (eg CD-R, CD.RW, DVD+R eight R, dvd + RW/rw, dvr, write: secondary DVD, etc.). In addition, any information (such as audio, video or information) can be recorded on this optical record carrier. In addition, the laser source can emit a laser beam of a frequency suitable for and conforming to the optical record carrier. The drawings and the description thereof are illustrative of the invention and are not intended to limit the invention. Any reference symbol in the request should not be construed as limiting the claim. The word, the package _ does not exclude the existence of elements other than those listed in a request item. The word "a" in the preceding paragraph does not exclude the existence of a plurality of such elements. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram schematically showing, in part and in part, a recording apparatus including a laser control system according to the present invention, and FIG. 2 is a schematic representation of a mine according to a first embodiment of the present invention. The detailed control block diagram of the radiation control system and the first scan length compensation module, and the second figure 3 illustrate the digital forward sensing signal, the timing associated with the delta signal, and the timing signal associated with the threshold signal, 4 is a detailed block diagram showing the laser control system and the first scan length compensation module according to the second embodiment of the present invention. U6295.doc 200822102 [Main component symbol description] AFS analog signal AFS1 analog forward sensing signal AFS2 analog forward sensing signal AMP amplification module APRO analog preprocessing module DE detector DFS f ' digital positive sensing signal [ DSdel digital delta signal DSthr digital threshold signal ECS digital error control signal ECSG1 delta signal generator ECSG2 threshold signal generator ECSG error control signal generator FN feedback network (FS V / optical sensor FSADC positive To analog analog digital converter ID1 First integration and division module ID2 Second integration and division module Ifs Current intensity LB Lucky beam LBP Radiation beam LCS Radiation source power control system LKT1 First lookup table module 116295.doc -19- 200822102 LKT2 second look-up table module LKT look-up table module LPCC radiation source power control circuit LS radiation source MA mechanical configuration MT time multiplexer MU multiplier module MU1 first multiplier MU2 second multiplier OE optics Component OH Optical head OM Optical record carrier PCS Power control signal PPROl First post-processing module / German Tower Post Processing Module PPR02 Second Post Processing Module / Threshold Post Processing Module RCM Scan Length Compensation Module RNC Counting Module RNC1 First Counting Module RNC2 Second Counting Module SM Sampling Module Tdel/Tthr Deer Tower timing signal / threshold timing signal 116295.doc -20-

Claims (1)

200822102 X. Patent application scope: 1 · A radiation source power control system, comprising: a sensor (FS), which receives a light beam δ 卩 knife (LBP) generated by a light source (LS) And providing an analog nickname (AFS) representing a radiation source power, a σ-one feedback network (FN) coupled to the sensor (Fs), a radiation source power control circuit (Lpcc) connected to The feedback network (FN) is connected to the radiation source (LS), wherein the feedback network (FN) comprises a scan length compensation module (RCM), which comprises: - a sampling module (SM), which is Representing the analog source (AFS) of the source power to provide a digital signal (DFS), at least one error control signal generator (ECSG, ECSG1, ECSG2) that performs an amplitude compensation and controls at least one bit error An nickname (ECS) is provided to the radiation source power control circuit (Lpcc) to control the power of the light source (LS). 2. The radiation source power control system of claim 1, wherein the sampling module (SM) comprises an analog pre-processing module (ApR〇) and an analog-to-digital converter (FSADC) 'the sampling module (SM) A digital signal (DFS) representative of the power of the radiation source is provided. 3. The radiation source power control system of claim 1, wherein the error control signal generator (ECSG, ECSG1, ECSG2) comprises: - an integration and division module (ID, ID1, ID2), - a counting module ( RNC, RNC1, RNC2), 116295.doc 200822102 - a lookup table module (LKT, LKTl, LKT2), - a multiplier (MU, MU1, MU2), where: - the integration and partition module (ID, ID1 And the counting module (RNC, RNC1, RNC2) receives the digital signal DFS indicating the radiation source power and at least one timing signal (Tdel, Tthr) based on the at least one timing signal (Tdel, Tthr) During the duration, the integration and partitioning module (ID, ID1, ID2) determines a sum by accumulating a plurality of samples of the digital signal DFS representing the radiation source power, and the counting module (RNC, RNC1) RNC2) determining a scan length by counting the plurality of samples representing the digital signal (DFS) of the light source power, the integration and partitioning module (ID, IDi, m2) dividing by the scan length Calculating one of the plurality of samples - the lookup table module (LKT, LKT1, LKT2) coupled to the counting module (RNC, RNC1, RNC2) determines a different factor according to the scan length, and connects to the lookup table module ( LKT, LKT1, LKT2) and the multiplier (MU, MU1, MU2) of the positive port and division module (ID, ID1, ID2) are calculated by multiplying the average of the plurality of samples by the conversion factor A converted value of a plurality of samples. 4. The lucky source s source power control system, wherein the error control $ 唬 generator (ECSG, ECSG1, ECSG2) further comprises at least one _ bit post-processing group I (PPR (1), PPR 〇 2), Connected to the multiplying 116295.doc 200822102 (mu, Mm, MU2) and the post-processed digital error control signal (DSdel, DSthr) is provided to the radiation source power control circuit (LpcC). 5. The radiation source power control system of claim 3 or 4, wherein a time multiplexer (MT) is connected between the multiplier (then, MU2) and at least a post-processing module (PPRO1, PPR02), The time multiplexer (10) τ) receives the delta timing signal (Tdel) and the -th timing signal (Tthr) and provides a digital delta signal (DSdel) or a digital threshold signal (DSthr) to the light shot $ Source Power Control Circuit (LPCC). 6. The source power control system of the request, wherein the light source (4) is a laser diode that produces a laser beam (LB), and the sensor (FS) is an optical sensor. 7. A light source power control system as claimed, wherein the sensor (fs) is a forward sensed exchange benefit providing a positive sense analog signal (AFS) indicative of the source power. A method for producing a radiation source power, comprising the steps of: Ο sensing a part of a radiation beam (LB) generated by a radiation source (LS) and expressing an analog signal of a radiation source power (AFS) a sampling table that does not have the analog signal (AFS) of the source power and provides a digital signal (DFS) indicative of the power of the source, - a plurality of samples of the digital signal representing the power of the source The field η compensates and provides at least a digital error control signal (ECS, DSdel, thr) to a light source power control circuit (LPCC) to control the power of the radiation source (LS). 9 · If the request item 8 夕古, 么^, force', the step of performing an amplitude compensation comprises 116295.doc 200822102 The following steps: - during a duration based on at least one timing signal (Tdel, Tthr) Generating a plurality of samples representing the digital signal of the source power to determine a sum, - during a duration based on the at least one timing signal (Tdel, Tthr), by counting the digit representing the source power Determining a scan length by the plurality of samples of the signal, - calculating an average of the plurality of samples by dividing the sum by the scan length, - determining a conversion factor based on the scan length, - using the conversion A factor multiplied by the average of the plurality of samples to calculate a converted value of the plurality of samples, and generating at least one digital error control signal (ECS, Ds & i, DSthr) to a radiation source power control circuit (LPCC) This power of the radiation source (Lg) is controlled. The method of claim 8 or 9, wherein the method further comprises the steps of: - amplifying the analog signal (afsi) representing the power of the radiation source to cancel an offset of the amplified analog signal, - providing A modified analog signal (AFS2). The method of any of claims 8 wherein the method further comprises the step of post processing the at least one digit error control signal. 12. The method of any of clause 8, wherein the at least _ timing signal is comprised of a delta timing signal (Tdel) and a threshold timing signal heart, and the at least one digital error control signal (ECS) It consists of a number of delta signals 116295.doc 200822102 (DSdel) and a digital threshold signal (DSthr). 13. A data recording device comprising a light source (LS) for generating a radiation beam (10) guided to a data record carrier () that can be embedded in the data recording device, wherein the data recording device comprises Request item 1 is connected to the »Hai Xingtian source (LS)-_Source Force Rate Control System (LCS). 1 . An electric monthly Hungarian private product for use in a light source control system, the computer program product comprising a set of instructions 'When the set of instructions is loaded to the radiation source C Power Control System (LCS) Zhongri Temple's which causes the radiation source control system (LCS) to perform the following steps: - sensing a portion of a radiation beam (LB) generated by a radiation source (LS) and providing a representation An analog signal (AFS) of the source power, - the sampling table does not have the analog signal (AFS) of the source power and provides a digital signal (DFS) indicative of the power of the source, - performing the representation of the source power A plurality of samples of the digital signal of the vibrating field complementer's and providing at least one digit error control signal (Ecs, DSdei, DSthr) to a radiation source power control circuit 仏%. In order to control the power of the Korean source (LS). 116295.doc