TWI251216B - Adaptive writing method for high-density optical recording apparatus and circuit thereof - Google Patents

Abstract

An adaptive writing method for a high-density optical recording apparatus and a circuit thereof are provided. The circuit includes a discriminator for discriminating the magnitude of the present mark of the input data and the magnitudes of the leading and/or trailing spaces, a generator for controlling the waveform of the write pulse in accordance with the magnitude of the present mark of the input data and the magnitudes of the leading and/or trailing spaces to generate an adaptive write pulse, and a driver for driving the light source by converting the adaptive write pulse into a current signal in accordance with driving power levels for the respective channels. The widths of the first and/or last pulses of a write pulse waveform are varied in accordance with the magnitude of the present mark of input NRZI data and the magnitude of the leading and/or trailing spaces, thereby minimizing jitter to enhance system reliability and performance.

Description

1251216

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing method suitable for use in high writing methods and circuits, and more particularly, to idealizing light energy of a recording device source, for example, σ The light is adapted to the characteristics and circuitry of the recording device. σ as a laser diode, [Related Description] Since the multimedia era requires high-capacity recording media to use high-capacity recording media, just as magnetic disk-mounted, pre-recorded systems use random access memory digital multi-purpose disks Two 0^ or, Μ), # has been widely used. Because the recording density increases, the =$$=recording system requires idealized and high-precision states. In general, with the increase in recording density, temporary fluctuations in the data definition domain (due to the "surge" mentioned below) also increase. Therefore, in order to achieve high density records, it is very important to minimize the glitch. Conventionally, the formation of a write pulse is detailed in the DVD-RAM format manual shown in Figure 1 (b), regarding the input NRZ I (N〇N~Return to Zero Inversion #: no reversal of zero inversion The slant of the slant has 3 D, 5 D and 1 1 T (D represents the band timing period) of the marked area, which is shown in Figure 1 (a). Here, the NRZ I data is divided into a marked area and a blank area. The blank area indicates that the bit is in the erasing erase level. The waveform of one write pulse of all the marked areas is equal to or larger than the marked area of 3 bits, that is, 3 T, 4 T ′...1 1 T and 1 4 T are included in one first pulse, one last

1251216 V. INSTRUCTIONS (2) The number of pulses in a pulse and a multi-pulse sequence is based on the labeled area, in other words, the write pulse is shown in Figure 1 (c), ie the peak energy or amount or the erased energy (Figure 1 (e) The signal is shown in Figure 1C, id write A Μ DVD 一次 脉 的 一次 一次 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域 区域The specification phase ~ RA Μ rush, one of the rising edges is read, fixed, and when executed once, it is more serious according to the length of the input mark. This also makes it possible, for example s 〇Overview] Solve the above problem and root. Change the specification, pulse order or last but appropriate. Here, only the size and variable in the multi-pulse sequence is included in a reading energy (write energy ( ϋ 1 ( d )) and the combination of bias energy. Here, the relevant energy and 1 E are the signals of low potential action according to the generation of 2·6GB DVD-R, according to the first generation 2 · 6 g B The waveform of the write pulse is contained in one Column and a last pulse. Although the falling edge of the first pulse can be written from a leading sum is impossible because the write pulse is written, it is severely made by forming a subordinate pulse balance such as thermal interference. After the phase of the ^ or into the marked area of the NRZ I data. Change #话说' A blank area is a short or bad I tilt, a major cause of low system efficiency. With the application of high-density celebrations, pregnant And one is to drop this system, as in the first

Generation 4 · 7 G IB D V Problem 疋 a tear of the invention, provide

1251216 V. INSTRUCTIONS (3) A suitable writing method, in which a write pulse is generated according to the size of the marked area and the size of the leading and/or trailing blank area when the data is input. Another object of the present invention is to make the light energy of the laser diode by generating a suitable write pulse according to the size of the input; the size of the marked area and the size of the leading and/or trailing blank area. Ideally, the optical scale device provides a suitable write circuit. ... Therefore, in order to achieve the first purpose, a method is provided here by writing the input data in two optical records by the first pulse, a last pulse and a "write pulse in the pulse sequence". The shape media t & extension method includes the steps to control the writing of the fu-'s wave-two, according to the input data, the size of the marked area and the leading and/or trailing 1 ί ί!! Produce a suitable write pulse, & this suitable write pulse write input - batten on the optical recording medium. In order to achieve the second purpose, ^ first · / IX ik *» Μ post pulse = 2 contained in - a first-time pulse, - the most recording medium, it is appropriate to write: Ray to write the input data in a 'light; round the data when the marked area is large;;, and:: contains - f The size of the device, the size of a wave, and the edge of the first and/or after the blank area is based on the waveform of the input pulse = control? write pulse, this writes:: the size of the blank area to the cold ^ No area size and leading and/or backwards by converting the appropriate write pulse to the write pulse, and a drive 1 The circuit signal is used to drive the light ^ according to the respective band f driving energy, 1^1216 —------ five, the invention description (4) [simple description of the illustration]; the above-mentioned purpose of the invention sub-reference day Figure 1A to 1E is a plan view. Figure 2 is a suitable embodiment of a Figure 3 A to 3 G is an incoming pulse is from Figure 2 Figure 4 is a round entry data Figure 5 The table is illustrated by the combination. The table 6 is based on the value of the motion. The table 7 is based on the value. Figure 8 is a flow chart according to the method of the present invention. Figure 9 is a diagram illustrating the comparison of the L generated by the method.圚唬 Description] 1 〇 2 data discriminator 1 〇 4 write waveform control 1 〇 6 microcomputer 〇 8 write pulse production and advantages become more common write write ^ electric one to the appropriate suitable for the display DETAILED DESCRIPTION OF THE INVENTION The present invention is described in more detail by a detailed description of the waveform of the incoming pulse. The block diagram of the circuit is used for the optical recording device according to the degree. The waveform of the % write pulse is illustrated by the recording circuit of the write circuit of FIG. 4 <The combination of the data generated by the last one of the inventions The falling edge of the pulse of the wave is a suitable suitable writing method of the embodiment and the preferred method. The preferred embodiment of the present invention is that the pulse edge of the write 变动 is written by the ordinary generator.

Page 101251216 The waveform control of the NR 10 2 with one micro-channel drive is further changed to 1 0 4 1 0, which becomes the description of the road driver. A better and better one 1 0 2 0 6, A 0. In other words. Write wave / fixed signal brain 1 0 6 initial waveform control pulse generation to generate an in-pulse generation optical band recording device is described to be incorporated into the circuit, write waveform punch generator material discriminator 1 0 4 identification result The resource 8 in the waveform control 4, according to the circuit signal generated by the write pulse 8, is referred to in the controller 1 0 8 10 2 according to the resource correction device 1 according to the write wave. The circuit is suitable for the number of five, the invention description (5) 1 10 electric [preferred embodiment in the following method and circuit according to the data of the computer 1 1 1 z I and ground. Micro-electricity exists to write new. The output of the write is replaced by a write according to each of the high-density optical examples, a write pulse, a generator control generated by the character control, and a programmable write of the appropriate device 10 Into the drawing. Figure 2, package 10 4, and an electric clock input material discriminator write pulse 0 4, or write state controller driver 1 write pulse drive light source. Figure 3 to Figure 7 show the device in Figure 2. The action will be described and please refer to ^^ The size of the display area is consistent with the 'first pulse from the blank area of the input NRZI' and the blank area of the second half (refer to the trailing blank area). Figure 2, Data Discriminator 1 0 2 write pulse at the time of reference (refer to the size of the blank area in the marked area at that time, the size of the blank area conforms to the time (refer to the leading blank area, hereinafter). The size matches the last pulse of the blank area at the time.

Page 11 1251216 V. Invention Description (6) ‘and apply leading and trailing blanks into the waveform control piracy 1 0 4 . The size of the marked area at this time and at that time may exceed 1000 combinations. Therefore, the rising edge of the pulse and the last pulse and memory are necessary, so that in the present invention, the size of the input NRZ I white space is divided into short pulse groups, at which time the marking area and lead and use are used as the basis for differentiation. Write waveform controller 1 〇4 so that backwards and forwards are determined according to the size of the identification and the size of the area at the time, so that backwards and forwards are used according to the multi-pulse sequence when 'to form an optimal light-marking area' And that is to say, 〇· 5 Ding. Similarly, the falling edge of the rising edge of the first pulse written into the waveform control region becomes a different value, based on the N R Z I data of the externally supplied ground/fixed signal. This is to write the size of the leading and trailing blank areas from 3 to 1 4 T 0 depending on the grounding or fixed potential between the ground and the fixed potential. Obtaining the total number of changes in the first-order falling edge of all conditions is more complicated. The circuit is more complicated. Therefore, in the labeled area and the leading and trailing empty-crush groups, the pulse group and the long pulse trailing blank area are The size of the distinction > is changed by the rising edge of the first pulse 1 0 2 to provide the leading blank area 5 or the writing waveform of the size of the marked area and the trailing blank area when changing the falling edge of the last pulse 〇 here> —— Figure 3 B shows the same form, the device 1 0 4 can correct the current indication > and the last pulse ground line or fixed potential line at the time of the 妁 mark area (LAND/ GROOVE ) means that the input forms 譬丨, _ writes to the waveform > and considers the most ideal light energy 〇 the most ideal light energy — 2 m W difference > can be set by

Page 12 1251216 $, invention description (7) The specification is to be specially set or 1- 0 4 can be stored in a memory or body data, equivalent to the size of the area, and the leading and falling ~ The variation of the rising edge of the secondary pulse. In this case, the write is made up of the hidden body, the first pulse and (T) add and subtract a data value (change. The same, in the memory, the rise of the pulse of the first and last pulses of the display area The table of the variation value of the edge variation value drop edge can be prepared optionally in the figure microcomputer 1 初始化 6 initialization write ~ times and / or the last pulse variation, the light energy can be changed according to the zero position according to the zero position Reset. Used to control the write pulse of the wave write pulse generator 1〇8. Write the appropriate write pulse, which is shown in the figure to control the write by the waveform controller and provide the control signal to indicate the appropriate write in the figure. The current of each band of the pulse is input to the current drive. Therefore, the waveform controller is written to form a logic circuit, and the value obtained according to the size of the blank area after inputting the NRZI data at that time is obtained, and finally The falling edge of the pulse controller 1 〇4 is determined by the width of the last pulse is determined by the band timing value and stored in the memory at each ground and fixed potential. The value of the marker can also be stored. The first sign of the bet is stored, and the last pulse stored is merged. Two separate tables can be used for 6 and Figure 7. The waveform controller 1 0 4 or the control value is updated according to the § recorded state. Special or first and last pulse variation values The shapeable pulse width data is supplied to the pulse generator 1 〇8 to generate a 3 F, which is the waveform of the write pulse provided by 0 4 according to the pulse width data, 3 C ' 3 D and 3 E to control this (ie read, spike and bias band) 1 1 0 .

Page 13 I251216

The current driver 1 is driven by the light energy of the band; the segment (ie: taking the peak of the peak and the bias control each band, go: J1 electricity k 'the control time is the same as the signal, so the right amount of current flows through the thunder The control of the emitter or the change in the total amount of light. Here, =铮ίΐ My domain is shown in Figure 3 (4 Μ丄w. 匕 Green 疋^ 0, g) 媒体 The media in the 被 被 is formed Figure 3 (a) shows the input of nRz T consultation M \ and the blank area. Figure 3 (b) shows the basic write waveform of the table as the label area of the paper. The rising edge of the incoming pulse is marked with

The amount of waveform. Fig. 3 (1) shows the waveform of the biasing energy of the present invention. The first write pulse of the suitable write pulse: rush η: edge ′ according to the size of the leading blank area and the size of the current marked area:::

Take energy or write energy) In the period corresponding to this offset, the last write of the appropriate write pulse is applied. : ' Depending on the size of the marked area at the time and the falling edge of the trailing blank area, it is offset backward or forward. The same, any one energy? The combination may be a reading energy or writing human energy) in the equivalent of = refers to, used. During the period of 1 field shift, it should be selected one by one. The size of the edge root of the last pulse drop may be shifted forward or backward, and marked at the time; π 〜

1251216 V. Invention description (9) The size of the rising edge and the possible edge are shifted backwards, Figure 4 depicts. In the first indicator is the labeled area of group 1 2 4 . In the first group of indicators is the 11 丁 1 group and the 1 group index of the 11 rush group, and can be classified according to the respective figures in Figure 5 into a three-square table, showing the first pulse representation The embodiment of Figure 8 is followed by the post-pulse. If writing to the modulo. Similarly, the more appropriate point is said to 'offset the first pulse's falling edge of the last pulse, the edge of any - pulse, = . Same =', observe the direction of the offset, the offset may be forward only forward or only backward. Or: Enter the group of NRZ! data, indicating that in two cases, if a low group indicator is 3 and a high level, the short pulse group's marked area is 3 T, and the medium pulse group is from 4 T to 1 work τ, the marked area of the long pulse group is 1 in 2 cases. If a low group indicator is 4 and one, the marked area of the short pulse group is 3 and 4T, and the display area is from 5TW 0Τ, long. The marking area of the pulse group is J 4 D. As described above, since low group indicators and high groups are used, practical efficiency is enhanced. Similarly, the group's zero position is the same as the local Yuan. ^ The description of the group of leading and trailing blanks, and the group of time zones in the time zone, is shown in Figure 4 under the condition that the Rz 1 will be used to refer to the group. Figure Θ depicts the change in the size of a well leading blank area and the size of the marking area at that time. Figure 7 depicts a table showing the variation of the falling edge determined by the size of the marked area and the size of the trailing blank area. = Flowchart Describes a suitable writing method of the present invention First, a writing mode is set (step s丨〇丨). The formula has been set to determine if it is a suitable writer

1251216 V. Inventive Note (10) Method (Step S102). If it is determined in step S102 that the write mode is a suitable write mode, a group indicator is set (step g3). Then, a group table determined by the set group index is selected (step S104). The selected group table is a table that reflects the ground/fixed potential as well as the group finger f. The selected form is also a form that reflects the zeros of the media in the record. The variation value of the rising edge of the first pulse is read from the table shown in FIG. 6 according to the combination of the leading blank area and the current marked area (step S105), and the variation value of the falling edge of the last pulse. It is read from the table shown in Fig. 7 based on the combination of the time stamp, the area, and the trailing blank area (step S106). A suitable write pulse is generated and the last pulse is based on the energy of the light of the other band being read for the 'spike and bias energy, which is controlled to s 108) to be performed on the disc - the formula is not a suitable The write mode is generated in step S107. (Step S1 07), wherein the first pulse variation value is controlled. Then, the appropriate write pulse of each generation, that is, the read system, drives a laser diode (step write operation. Such as ^ write mode) a normal write pulse will be produced in Figure 9. Is a picture compared to the usual method of engraving by the handle of the secret method; the appropriate writing method and light energy is 9 · 5mW, multi-pulse ίί:, has been removed by the set spike

The cooling energy is 1. The amount of 2mW is written according to the invention. The appropriate write pulse 3 depends on the amount 疋5.2 mW. When the root is written in general, the spur generated when writing the fixed=bin is more than the root. The glitch generated when the 写入 write pulse is

1251216 V. Description of invention (11) Less. The case of initialization is 4 ••2mW and 1〇〇 write per second. In other words, according to the present invention, the rising edge RZI data of the first pulse leads the waveform of the large write pulse of the blank area, and / or offset, according to the size of the input NRZ I blank area to control the write pulse is small. In the same way, it is based on grounding/fixing. Similarly, the nulls of the present invention are implemented differently, using a group according to a new majority of the present invention using a suitable write pulse. As described above, the width of a write burst is variable, depending on the size of the input, and the lead Or the gap blank area is small to strengthen the system's reliable skin and effect width is controlled, by combining the size of the subsequent blank area, thus reducing the speed of 2 meters, erasing the energy 7 action. When the edge of the write pulse is properly shifted, it will be appropriately offset. According to the input ^ small, and the size of the marked area at that time, the falling edge of the last pulse will be properly controlled, and the size of the marked area and the backward waveform will be appropriately selected. Therefore, the waveform that causes the glitch to be reduced to the most significant signal write pulse can be mediated in the group may be based on individual metrics. Suitable writing methods can be employed in large high density optical recording devices. The first and/or last pulse of the incoming pulse is the N R Z I data, and the dog in the marked area is small, thus reducing the wave to the maximum. Similarly, the size of a marked area when writing a pulse, and the size of leading or falling hard Han.

Page 17

Claims (1)

The write pulse is written by the first pulse 1 · a data writing-j method suitable for a high-density optical recording medium, and the input data is written to the second recording medium according to the corresponding writing pulse of the NRZI signal. , characterized in that in the method, the energy value of the marked area and the blank area of the NR z丨^ number is divided into a short pulse group, a middle group and a long pulse group, according to the different length pulse group The sequence combination 'corresponds to control the write pulse waveform' to generate a suitable write pulse; wherein ~ (5) Qiao 7 - 八 ^ muscle, 序 丨 丨 J from the fecal muscle, 1 blade formed 'and will be written to the pulse The first pulse is opened on the edge, and the corresponding offset is performed according to the sequence combination of the pulse groups of different lengths generated by the energy values of the NRZI彳sy tiger and the blank area. 2. The data writing method according to claim 1, wherein the offset of the rising edge of the first pulse is compared according to the energy value of the marked area at the time and the energy value of the leading blank area. After that, the corresponding offset is performed. 3. The method for writing data according to item i of the patent application scope is characterized in that the offset of the falling edge of the last pulse is based on the current value of the target area and the energy value of the trailing blank area. , perform the corresponding shift. 4. The data writing method according to item 1 of the application scope, characterized in that: the period corresponding to the rising edge offset of the most pulse, and the period corresponding to = ^ θ and the falling edge offset, applying a predetermined band The light can be set. 5. The method of writing data as described in item 4 of the patent application is characterized by ΪΜ 880708404. ptc page 19 1251216 修正 correction Ά 88Π2489_ VI. Patent application scope The illuminating energy of the predetermined channel is the reading energy or the heart. 6. If the patent application range is i or 2 or 3 _ ==. The method of incorporation is characterized in that the method further comprises: a 5 m data write signal to correct the waveform of the write pulse ^ ^ 疋 / ground input data is a data on the fixed line and a signal representation 7. As claimed in the patent range τ $ 9 ^ I also 资料 data on the ground line. And sacrifice:::! Or the data writing method described in the three items, the second temple test is that, in order to control the write pulse edge offset value, the energy value of the ff: and the falling edge I5, the area and the blank area can be different pulses from a group table. Large 丄 = edge offset value, falling edge offset value. The rising edge of the write pulse waveform is as follows: The data described in claim 7 of the patent scope, the grouping table, the energy value for the time zone, and the leading/falling group, the middle pulse group and Pulse width data of the pulse after the long pulse group. The first time/maximum of the pulse waveform should be written. The data writing method as described in item 7 of the application f range: page first blank area energy value and current scalar quantity (4) pulsed, wide data; The energy value, m 'reads the offset value of the falling edge of the last pulse, and counts the pulse width data of the last pulse. Value 1 880708404. ptc Page 20