CN101510429B - Method for obtaining recording media data frame, channel position and tunnel shore time length - Google Patents

Method for obtaining recording media data frame, channel position and tunnel shore time length Download PDF

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CN101510429B
CN101510429B CN 200910080188 CN200910080188A CN101510429B CN 101510429 B CN101510429 B CN 101510429B CN 200910080188 CN200910080188 CN 200910080188 CN 200910080188 A CN200910080188 A CN 200910080188A CN 101510429 B CN101510429 B CN 101510429B
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length
time
data
recording
medium
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CN101510429A (en )
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倪屹
徐海峥
杨波
潘龙法
裴京
陆达
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清华大学
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Abstract

The invention relates to a method for obtaining recording medium data frames, channel bits and pit land time length. The method determines the total number A of every frame of pit and land by counting the pit and land number of a certain number of data frames; during the reading process of recording medium data, the time T required for continuous A multiplied by N is counted, wherein, N is not less than 1 and is an integer; relevant parameters during the reading process of recording medium data are obtained based on the known parameter of recording medium, which are specifically data frame time length T1, channel bit time length T2, the time length T3 of pit and land with different length, and recording medium rotation speed v. The method does not depend on the extraction of the frame header of recording medium data, can measure data frame time length T1, channel bit time length T2, the time length T3 of pit and land with different lengths, and recording medium rotation speed v at anyrotation speed, and has higher stability and reliability compared with traditional detection methods.

Description

一种获取记录介质数据帧、通道位及坑岸时间长度的方法 A recording medium of a data frame, the channel bit length of the pit and land method of acquiring time

技术领域 FIELD

[0001] 本发明涉及信息存储设备数据读取领域,具体涉及一种获取记录介质数据帧、通道位及坑岸时间长度的方法。 [0001] The present invention relates to the field of data storage devices reading information, in particular, to a data frame, and the channel bit length at the time of acquiring the land pit recording medium.

背景技术 Background technique

[0002] 进行旋转读取记录介质的数据时,将读取记录介质产生的模拟信号恢复成原始的数字信号之前,即恢复成记录到记录介质以前的数据,需要用读取记录介质所产生的模拟信号来对记录介质的转速进行计算。 Before restored when [0002] data read rotary recording medium, the recording medium is read into the original analog signal to produce a digital signal, i.e., restored to the previous data is recorded to the recording medium, the need for reading the recording medium generating analog signals are used to calculate the rotation speed of the recording medium.

[0003] 因为记录到记录介质以前的数据是数字信号,记录介质上的通道位指数字信号的位bit,一个通道位指数字信号的一个bit,衡线速通道位指在记录在记录介质上每个bit 的物理长度都是固定的,这里的物理长度指在记录介质上的尺寸长度;非衡线速通道位指在记录在记录介质上每个bit的物理长度不是固定的,衡角速通道位就是在记录介质上每个bit的物理长度2端到旋转圆心的夹角是固定的。 [0003] Since the previously recorded recording medium is a digital data signal, the recording medium refers to channel bits on the bit 'bit digital signal, a channel bit' bit refers to a digital signal, line speed value refers to channel bits recorded on the recording medium each bit of the physical length is fixed, the physical length here refers to a length dimension in the recording medium; unbalanced line speed refers to channel bits recorded on a recording medium in the physical length of each bit is not fixed, angular velocity value channel bits on the recording medium is the physical length of each 2-bit rotation center angle end is fixed.

[0004] 对于具有记录帧结构衡线速通道位的数据记录介质的转速传统的测定方法,是需要将记录介质的转速控制到一定的范围之类。 [0004] The conventional method of measuring the rotational speed of the data recording medium having a recording linear velocity scale a frame structure of channel bits, is the need to control the rotational speed of the recording medium or the like to a certain range. 比如给电机加一个固定的电压,因此电机带动记录介质旋转的角速度接近一个常数。 Applied to the motor, such as a fixed voltage, so that the motor drive of the recording medium closer to a constant angular velocity. 即使电压是固定的,由于机械转动是有振动的和记录介质不是真正的圆形等原因,所以角速度会在一个常数附近波动。 Even if the voltage is fixed, is due to mechanical vibration and rotation of the recording medium is not a true circle and other reasons, so that the angular velocity will fluctuate around a constant. 由于具有记录帧结构衡线速通道位记录介质上的数据,每帧数据的物理长度是固定的,帧头的物理长度也是固定的,因此,记录介质转过帧头的物理长度所需要的时间是一个常数,这个常数可以转换为采样时钟个数乘以一个时钟的时间。 Due to the structural frame data recording linear velocity channel bit value recording medium, the physical data length of each frame is fixed, the physical length of the header is fixed, and therefore, the medium turned time required physical length header record is a constant, this constant can be converted to the sampling time is multiplied by the number of clocks of a clock. 即,给电机加一个电压,就可以通过这个原理得到来确定在这个电压下,帧头的采样时钟个数的范围,然后提取帧头计算出数据帧时间长度和记录介质旋转速度,数据帧时间长度为读取一帧数据的物理长度所需要的时钟个数,记录介质转速为单位时间内记录介质转过的物理长度。 That is, a voltage applied to the motor, this principle can be determined by this voltage range the number of sampling clock of the frame header, the frame header and then extracted data frame time length is calculated, and the rotational speed of the recording medium obtained, the data frame time reading a length of a physical length of the number of clocks required for the data, the recording speed of the recording medium is rotated physical length of the medium per unit time.

[0005] 如图1所示的帧头及坑岸模拟信号时钟采样示意图,所采集的模拟采样信号中, 连续大于直流电平值的模拟采样信号为岸,连续的小于直流电平值的模拟采样信号为坑, 岸或者坑都包含有整数个通道位,其中帧头包含通道位的个数最多,比除帧头外的坑或者岸包含最多的通道位个数还要多2 ;假如实验测到的,在给定电机的这个电压下,帧头的采样时钟个数的平均为A,帧头含有的通道位个数为B,则可以设定一个范围A + BX (BI)到Α + ΒΧΦ+1),当坑或者岸的采样时钟个数在Α + ΒΧΦ-1)到Α + ΒΧΦ+1)范围之内,则标记这个坑或者岸为帧头;图中帧头是个坑,实际帧头有坑,也有岸。 [0005] header of the land and the pit clock analog signals shown in Figure 1 a schematic view of sampling, sampling the analog signal collected continuously greater than the value of the DC level of the analog signal sampled shore, continuous DC level less than the analog value sampled signal pit, the pit or land contains an integer number of channel bits, wherein the header comprises a number of channel bits at most, even more than 2 except pit or a land header containing the most number of channel bit; if the experimentally measured is, at a given voltage of the motor, the average number of sampling clock header is a, the number of channel bits contained in the header is B, it is possible to set a range of a + BX (BI) to Α + ΒΧΦ +1), when the sampling number of the clock pit or land in Α + ΒΧΦ-1) + [alpha] to the range ΒΧΦ + 1), the pit or the mark is a land header; FIG pit in the header is the actual frame there are pit head, but also shore. 在提取出帧头后计算出数据帧时间长度的方法为,连续2个帧头之间的采样时钟个数乘以一个时钟时间周期。 After the extracted header data length of a method for calculating time frame, the number of samples between two consecutive clock multiplied by a clock period header. 计算记录介质的转速的方法为一帧数据的物理长度除以数据帧时间长度。 The method of calculating the rotational speed of the recording medium as physical data length of one frame time divided by the length of the data frame.

[0006] 这种常规的测定方法有记录介质旋转速度范围的局限性。 [0006] Such a conventional method for measuring the rotational speed of the recording medium range limitations. 即需要首先将记录介质的转速控制到一定的范围之类,在旋转速度发生变化的情况利用上述方法获得的记录介质的转速和数据帧时间长度都是不准确的,另外,只适用于具有帧头结构的记录介质数据的旋转读取中相关参数的计算。 I.e., the rotational speed of the recording medium need to be controlled to a certain range or the like, the situation changes in the rotational speed and the speed data by using frame time length of the recording medium obtained as described above is not accurate, and the other, a frame having only applies calculating parameters of the rotary recording medium read head structure data. 发明内容 SUMMARY

[0007] 本发明的目的是提出一种获取记录介质数据帧、通道为及坑岸时间长度的方法, 在任何旋转的速度下都能测定记录介质的数据帧时间长度、通道位时间长度、不同长度坑岸的坑岸时间长度和记录介质旋转速度。 [0007] The object of the present invention is to provide a data frame, the channel for the land and the pit length at the time of obtaining the recording medium, the data frame time can be measured length of the recording medium, the channel bit length of time at any rotational speed, different pit and land length of time the pit length recording medium rotation speed land.

[0008] 为实现上述目的,本发明采用如下技术方案: [0008] To achieve the above object, the present invention adopts the following technical solution:

[0009] 一种获取记录介质数据帧时间长度的方法,用于获取所述记录介质数据读取过程中的数据帧时间长度,包括步骤: [0009] Length of the recording medium for acquiring data frame time, a frame length of time for data read media data acquired during the recording, comprising the steps of:

[0010] 获取记录介质上每帧数据形成的坑岸总数A ; [0010] A total number of land acquisition pits on a recording medium, each frame of data is formed;

[0011] 在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间T,其中N > 1, 此N为整数; [0011] In the recording medium, the data reading process, the statistical AXN consecutive pits land used time T, where N> 1, where N is an integer;

[0012] 通过计算每帧数据读取所用时间得到数据帧时间长度Tl = T/N, [0012] Each frame of data obtained by calculating the time used to read the data length of the frame of time Tl = T / N,

[0013] 其中,获取记录介质上每帧数据形成的坑岸总数A包括步骤: [0013] wherein the total number of land acquisition pit A recording medium comprising a step of forming each frame of data:

[0014] 以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数; [0014] In a frame statistics run value modulation coding unit out of a plurality of data frames, the run value of the data frame recorded to the total number of pits on the land of the recording medium after the formation;

[0015] 统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,…, Sn, η为正整数,代表不等的游程数值的个数; Run value ranging from A1 [0015] Statistics occurring, A2, ..., An and the data frame number corresponding to each of S1, S2, ..., Sn, η is a positive integer number, representing the run values ​​ranging ;

[0016] 将与最大的数据帧个数对应的游程数值确定为记录介质上每帧数据形成的坑岸总数Α; [0016] The determining run values ​​corresponding to the maximum number of data frames is the total number of pits recorded on a land formed in each frame of data media [alpha];

[0017] 或通过下式获取记录介质上每帧数据形成的坑岸总数A : [0017] A land or obtain the total number of pits on the recording medium for each frame of data is formed by the following formula:

[0018] [0018]

Figure CN101510429BD00061

[0019] 优选地,所述N为1,该方法中,在连续获得若干个数据帧时间长度后,对其进行均值滤波去噪处理得到优化后的数据帧时间长度。 [0019] Preferably, the N-1, in this method, after a number of consecutive data frame time duration, its mean filter denoising length data frame time to obtain optimized.

[0020] 本发明还提供了一种获取记录介质转速的方法,用于针对衡线速通道位记录介质,获取所述记录介质读取过程中的记录介质转速,包括步骤: [0020] The present invention further provides a method for obtaining the rotational speed of the recording medium, a channel bit linear speed value for the recording medium, the recording medium is acquired speed reading process medium, comprising the steps of:

[0021] 确定记录介质上每帧数据的物理长度C ; [0021] determining the physical length of recording data of each frame C on the medium;

[0022] 获取记录介质上每帧数据形成的坑岸总数A ; [0022] A total number of land acquisition pits on a recording medium, each frame of data is formed;

[0023] 在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间T,其中N > 1, 此N为整数; [0023] In the recording medium, the data reading process, the statistical AXN consecutive pits land used time T, where N> 1, where N is an integer;

[0024] 通过计算所述记录介质单位时间内转过的物理长度得到记录介质转速ν = (NXC) /T, [0024] The recording medium obtained by calculating the rotational speed of the physical length of the recording medium is rotated in a unit time ν = (NXC) / T,

[0025]其中, [0025] wherein,

[0026] 获取记录介质上每帧数据形成的坑岸总数A包括步骤: [0026] A total number of land acquisition pits on a recording medium formed in each frame of data comprising the steps of:

[0027] 以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数; [0027] In a frame statistics run value modulation coding unit out of a plurality of data frames, the run value of the data frame recorded to the total number of pits on the land of the recording medium after the formation;

[0028] 统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,…, Sn, η为正整数,代表不等的游程数值的个数; Run value ranging from A1 [0028] Statistics occurring, A2, ..., An and the data frame number corresponding to each of S1, S2, ..., Sn, η is a positive integer number, representing the run values ​​ranging ;

[0029] 将与最大的数据帧个数对应的游程数值确定为记录介质上每帧数据形成的坑岸总数A; [0029] The determination of the maximum run value corresponding to the number of data frames to the total number of shore A recording pit on the medium formed in each frame of data;

[0030] 或通过下式获取记录介质上每帧数据形成的坑岸总数A : [0030] A land or obtain the total number of pits on the recording medium for each frame of data is formed by the following formula:

[0031] [0031]

Figure CN101510429BD00071

[0032] 优选地,所述N为1,该方法中,在连续获得若干个记录介质转速后,对其进行均值滤波去噪处理得到优化后的记录介质转速。 [0032] Preferably, the N-1, in this method, after a plurality of consecutive recording medium speed, its mean filter denoising to obtain an optimized speed of the recording medium.

[0033] 本发明还提供了一种获取记录介质通道位时间长度的方法,用于获取所述记录介质读取过程中的通道位时间长度,包括步骤: [0033] The present invention further provides a method for obtaining channel bit time length of the recording medium, the channel bit length of time for acquiring the medium during reading, comprising the step of recording:

[0034] 确定记录介质上N帧数据的通道位总长度Μ,其中N彡1,此N为整数; [0034] The recording medium determining the total length of channel bit of the data frame [mu] N, where N San 1, where N is an integer;

[0035] 获取记录介质上每帧数据形成的坑岸总数A ; [0035] A total number of land acquisition pits on a recording medium, each frame of data is formed;

[0036] 在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间T ; [0036] In the recording medium during data read, AXN pit land used statistic consecutive time T;

[0037] 通过计算读取每帧数据中的通道位所用时间得到通道位时间长度Τ2 = Τ/Μ, [0037] By calculating the read channel bits per frame in the data channel bit obtained any length of time Τ2 = Τ / Μ,

[0038]其中, [0038] wherein,

[0039] 获取记录介质上每帧数据形成的坑岸总数A包括步骤: [0039] A total number of land acquisition pits on a recording medium formed in each frame of data comprising the steps of:

[0040] 以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数; [0040] In a frame statistics run value modulation coding unit out of a plurality of data frames, the run value of the data frame recorded to the total number of pits on the land of the recording medium after the formation;

[0041] 统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,…, Sn, η为正整数,代表不等的游程数值的个数; Run value ranging from A1 [0041] Statistics occurring, A2, ..., An and the data frame number corresponding to each of S1, S2, ..., Sn, η is a positive integer number, representing the run values ​​ranging ;

[0042] 将与最大的数据帧个数对应的游程数值确定为记录介质上每帧数据形成的坑岸总数Α; [0042] The determining run values ​​corresponding to the maximum number of data frames is the total number of pits recorded on a land formed in each frame of data media [alpha];

[0043] 或通过下式获取记录介质上每帧数据形成的坑岸总数A : [0043] A land or obtain the total number of pits on the recording medium for each frame of data is formed by the following formula:

[0044] [0044]

Figure CN101510429BD00072

[0045] 优选地,所述N为1,针对衡线速通道位记录介质,在连续获得若干个通道位时间长度后,对其进行均值滤波去噪处理得到优化后的通道位时间长度。 [0045] Preferably, the N is 1, the recording medium, line speed value for channel bits, after a number of consecutive channel bits length of time, its mean filter denoising bit time length of the channel obtained after optimization.

[0046] 本发明还提供了一种获取记录介质坑岸时间长度的方法,用于获取所述记录介质读取过程中的坑岸时间长度,包括步骤: [0046] The present invention further provides a method for obtaining the time length of the land pit recording medium, for acquiring the land recording pit length of time during reading of the medium, comprising the steps of:

[0047] 确定记录介质上N帧数据的通道位总长度Μ,其中N彡1,此N为整数; [0047] The recording medium determining the total length of channel bit of the data frame [mu] N, where N San 1, where N is an integer;

[0048] 确定记录介质上不同长度的坑岸所包含的通道位个数χ ; [0048] recording medium is determined on the number of channel bits of different length land included in the pit [chi];

[0049] 获取记录介质上每帧数据形成的坑岸总数A ; [0049] A total number of land acquisition pits on a recording medium, each frame of data is formed;

[0050] 在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间T ; [0050] In the recording medium during data read, AXN pit land used statistic consecutive time T;

[0051] 获取不同长度坑岸的坑岸时间长度Τ3 = (T/M) Xx, [0051] Gets the pit length of pits of different lengths of time shore shore Τ3 = (T / M) Xx,

[0052]其中, [0052] wherein,

[0053] 获取记录介质上每帧数据形成的坑岸总数A包括步骤: [0053] A total number of land acquisition pits on a recording medium formed in each frame of data comprising the steps of:

[0054] 以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数; [0054] In a frame statistics run value modulation coding unit out of a plurality of data frames, the run value of the data frame recorded to the total number of pits on the land of the recording medium after the formation;

[0055] 统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,…, Sn, η为正整数,代表不等的游程数值的个数; Run value ranging from A1 [0055] Statistics occurring, A2, ..., An and the data frame number corresponding to each of S1, S2, ..., Sn, η is a positive integer number, representing the run values ​​ranging ;

[0056] 将与最大的数据帧个数对应的游程数值确定为记录介质上每帧数据形成的坑岸总数A; [0056] The determination of the maximum run value corresponding to the number of data frames to the total number of shore A recording pit on the medium formed in each frame of data;

[0057] 或通过下式获取记录介质上每帧数据形成的坑岸总数A : [0057] A land or obtain the total number of pits on the recording medium for each frame of data is formed by the following formula:

[0058] [0058]

Figure CN101510429BD00081

[0059] 优选地,所述N为1,针对衡线速通道位记录介质,在连续获得若干个坑岸时间长度后,将相同长度坑岸的坑岸时间长度进行均值滤波去噪处理得到优化后的坑岸时间长度。 [0059] Preferably, the N is 1, line speed value for the recording medium channel bits, after a plurality of consecutive pits land length of time, the length of the pit length of the pit same time land land will be optimized mean filter denoising land length of time after the pit.

[0060] 优选地,所述记录介质上数据具有帧头,获取记录介质上每帧数据形成的坑岸总数A包括步骤: [0060] Preferably, the header having a data recording medium, obtaining the total number of pit A land on a recording medium formed in each frame of data comprising the steps of:

[0061] 在记录介质读取过程中将持续时间在设定范围内的坑或岸作为记为帧头,由所述帧头确定数据帧; [0061] The recording medium in the reading process or the land pit duration within a set range referred to as the frame header, the frame header is determined by the data frame;

[0062] 连续统计读取若干个数据帧时每个数据帧所出现的坑岸总数,得到不等的坑岸总数A' ι;Α' 2,-,A' nl及其分别对应的数据帧个数S' 1?S' 2,-,S' nl,nl为正整数, 代表不等的坑岸总数的个数; [0062] The total number of pits land continuously read statistics of each data frame that appears when a plurality of data frames, to obtain the total number of land ranging pit A 'ι; Α' 2, -, A 'nl and data corresponding to each frame the number of S '? 1 S' 2, -, S 'nl, nl is a positive integer, the number represents the total number of pit shore ranging;

[0063] 将与最大的数据帧个数对应的坑岸总数确定为记录介质上每帧数据形成的坑岸总数Α; [0063] The total number of pit and land the maximum number of data frame corresponding to the determined total number of recording pits on the medium land data of each frame is formed [alpha];

[0064] 或通过下式获取记录介质上每帧数据形成的坑岸总数A : [0064] A land or obtain the total number of pits on the recording medium for each frame of data is formed by the following formula:

[0065] [0065]

Figure CN101510429BD00082

[0066] 利用本发明来获取记录介质数据读取过程中的数据帧、通道位及坑岸时间长度和记录介质转速,具有以下有益效果: [0066] With the present invention the recording medium to obtain a data frame in the data reading process, and the channel bit length of the pit and land time speed recording medium, has the following advantages:

[0067] 1)不但适用于带有帧头的记录介质数据的旋转读取,而且适用于没有帧头的数据记录介质的旋转读取; [0067] 1) applies not only to read the rotary recording medium having a data frame header, but no data records applies to the read header rotating medium;

[0068] 2)记录介质在任何旋转的速度下本发明都能测定其数据帧时间长度、通道位时间长度、不同长度坑岸的坑岸时间长度和记录介质旋转速度,比传统检测方法更高的稳定性与准确性。 [0068] 2) recording medium of the present invention is able to measure the length of the data frame time, the channel bit length of time, the pit length of pits of different lengths of time shore and land recording medium at any rotational speed of the rotational speed, higher than traditional methods stability and accuracy.

附图说明 BRIEF DESCRIPTION

[0069] 图1为现有技术中帧头及坑岸模拟信号时钟采样示意图; [0069] FIG. 1 is a prior art pits and land header clock sampling an analog signal a schematic view;

[0070] 图2为本发明实施例中数据帧的坑和岸总数统计效果的示意图; [0070] FIG. 2 is a schematic embodiment of the statistical effect of the data frame and the total number of pit land embodiment of the invention;

[0071] 图3为本发明提出获取记录介质数据帧、通道位及坑岸时间长度的方法流程图。 [0071] FIG 3 proposes a recording medium acquired data frame, and the channel bit length at the time of land pit flowchart of the present invention.

具体实施方式 detailed description

[0072] 本发明提出的获取记录介质数据帧、通道位及坑岸时间长度的方法,结合附图和实施例说明如下。 [0072] Gets the recording medium proposed by the present invention, the frame data, a channel bit length of the pit and land method of time, in conjunction with the accompanying drawings and the embodiments described below.

[0073] 实施例1 [0073] Example 1

[0074] 由于调制编码前经过了扰频的数据具有随机性的特点,所以调制编码后各种游程长的坑和岸出现的概率是固定的,因此,在记录介质上每帧数据形成的坑和岸的总数接近于一个常数。 [0074] Since the front after the modulation coding scrambled data having random characteristics, so the probability of each run length of pits and lands after the modulation coding occurs is fixed, therefore, each frame of data is formed on the recording medium, pit and a constant total number close to shore. 基于此,如图3所示,本发明通过统计一定数量的数据帧的坑岸数来确定每帧坑和岸的总数接近的常数A,在记录介质数据读取过程中,统计连续AXN个坑岸所用时间T,其中N > 1,且N为整数;基于记录介质的已知参数来获取记录介质数据读取过程中相关参数,该相关参数具体为数据帧时间长度Tl、通道位时间长度T2、不同长度坑岸的坑岸时间长度T3和记录介质转速ν。 Based on this, as shown in FIG. 3, the number of pits Kishimoto invention by a certain number of frames the statistics to determine the total number of constants A close pits and lands of each frame, the recording medium in the data reading process, the statistical successive pits AXN the shore with the time T, where N> 1, and N is an integer; recording medium to acquire data read process parameters based on the known parameters of the recording medium, to the relevant parameters for the particular data frame time length Tl, T2 times the channel bit length pit and land length of time the recording medium speed T3 pits of different lengths shore ν.

[0075] 获取记录介质上每帧数据形成的坑岸总数A有两种方法。 [0075] A total number of land acquisition pits on a recording medium, each frame of data is formed of two ways.

[0076] 方法一:根据前面所述的扰频后再编后的数据游程数值(将该数据帧记录到记录介质上后会形成的坑岸总数)为常数的理论基础,不进行记录介质读取来获取A。 [0076] Method a: The data run value (the total number of the data frame recorded to pit land on the recording medium after the formation) scrambled before coding the previously described constant theoretical basis, without reading the recording medium take to get A.

[0077] 包括步骤: [0077] comprising the steps of:

[0078] 以帧为单位统计调制编码出来的若干个数据帧的游程数值;假如以帧为单位统计调制编码出来的一定数量数据帧的游程数值有A1, A2,…,An, η代表有η个不等的游程数值,并不是统计了η帧数据。 [0078] In a frame run value unit statistics modulation encoding out of a plurality of data frames; run value if a frame unit statistics modulation coding out a certain number of data frames are A1, A2, ..., An, η representatives [eta] ranging from a run value, not statistics η frame data. 假设游程数值为A1的有S1帧,游程数为A2的有S2帧,游程数为An的有Sn帧,然后将A1, A2,…,An为横坐标,将游程数值为A1, A2,…,An对应的数据帧个数S1, S2,…,Sn为纵坐标在图上标记出来,于是得到的类似于图2的图,最后常数A的值为数据帧个数S1, S2,…,Sn中最大值对应的A1, A2,…,An中的游程数值;或通过下式获取记录介质上每帧数据形成的坑岸总数A : Suppose run values ​​of A1-S1 frame, the run number A2 are S2 frame, the run number An of the Sn frame, then A1, A2, ..., An abscissa, the run value of A1, A2, ... , An corresponding to the number of data frames S1, S2, ..., Sn is marked on the ordinate of FIG out, thereby obtaining FIG. 2 is similar to FIG, constant final value of the number of data frames S1 a, S2, ..., Sn corresponding to the maximum value A1, A2, ..., An of the run value; obtaining the total number of pits or land on a recording medium a for each frame of data is formed by the following formula:

Figure CN101510429BD00091

[0080] 方法二:该方法要求记录介质上数据具有帧头。 [0080] Method II: This method requires a data recording medium having a header.

[0081] 该方法具体包括步骤: [0081] The method comprises the steps of:

[0082] 与方法一类似,区别在于不是统计数据经调制编码所调制出来的游程数值,而是通过从记录介质上读取的模拟信号来统计。 [0082] A similar method with the difference that was not statistically coded modulated data modulated run out values, but to count the analog signal read from the recording medium. 在任意速度下,通过采集的模拟信号,根据帧头的时间长度是所有坑岸中最大的特点找到任意一个帧头,并估算帧头的采样点数m,即帧头的时间长度,这个m也可以通过示波器对记录介质读取的模拟信号进行上升沿触发,查看帧头的网眼图来进行估算,因为帧头的时间长度是所有坑岸中最大的,因此从当前采样点数接近m的坑或岸到下一个采样点数接近m的坑或岸即为一帧,并计算出此帧的坑或岸数为A'工,从下一个采样点数接近m的坑岸到再下一个采样点数接近m的坑岸数为A' 2,以此类推得到A' nl,nl代表有nl个不等的坑岸总数,并不是统计了η帧数据。 In any rate, the analog signal acquisition, according to the time length of all the header is the biggest feature in the pit land find any header, and estimate the number of samples m frame header, frame header length of time, i.e., also the m an oscilloscope may be performed by a recording medium reading an analog signal rising edge trigger, see FIG mesh header to be estimated, the length of time since the header is the largest in all the pit land, so close to the pit from the current sample point m or land closest to the next sampling point m is the pit or a land, and a pit or the land is calculated as the number of the frame a 'work, land near the pit m from the next sampling point to sampling points then the next closest m the number of pit shore a '2, and so on to get a' nl, nl a nl representatives ranging from the total number of pit shore, not statistics η frame data. 然后与方法一所述一样将坑岸总数为A' 1; A' 2,…,A' η1对应的帧数S' 1; S' 2,…,S' nl为纵坐标,在图上标记出来,于是得到的类似于图2的图,最后常数A的值为数据帧个数S' 1; S' 2,…,S' 最大值对应的A' 1; A' 2,…,A' 的游程数值。 The method is then the same total number of the land of the pit A '1; A' 2, ..., A 'η1 corresponding frame S' 1; S '2, ..., S' nl ordinate is marked on FIG. out, thus obtaining a view similar to Figure 2, the number of data frames is the constant a final S '1; S' 2, ..., S 'corresponding to the maximum a' 1; a '2, ..., a' run values. 上述的接近m是指在m周围设定的范围内。 M refers to the above approaches within a set range around the m. 另外,也可以通过下式获取记录介质上每帧数据形成的坑岸总数A: Further, the total number of pits may be acquired on a recording medium A land data of each frame is formed by the following formula:

Figure CN101510429BD00092

[0084] 如图2是对记录介质DVD5以帧为单位按上述方法所作的坑岸数统计图,图形的最高点就是所要得到的常数Α,也可以看作是以帧为单位的许多帧的坑岸数的平均值。 [0084] FIG. 2 is a chart recording the number of pits land DVD5 made in units of frames as described above medium, the highest point of the pattern to be obtained is a constant [alpha], it can be seen as a number of frames based on frame units of the average number of pit shore.

[0085] 下面给出本实施例获取记录介质数据帧、通道位及坑岸时间长度的方法的具体过程。 [0085] Examples are given below of the present embodiment acquires specific process media data frame, and the channel bit length at the time of land recording pits.

[0086] 1)获取相关参数_数据帧时间长度Tl[0087] 首先在记录介质数据读取前,按上述方法获取记录介质上每帧数据形成的坑岸总数A ;确定统计连续常数A个坑和岸时所消耗的采样时钟数个数为B,根据时钟周期为t,得到统计连续常数A个坑和岸时所消耗的时间T' = BXt,也就是此刻读取一帧数据的时间长度为T',进而获得数据帧时间长度Tl =T'。 Frame time duration [0086] 1) data acquisition parameters _ Tl [0087] First, before data reading recording medium, acquiring the total number of pits on the recording medium A land data of each frame is formed as described above; continuously determining statistical constants A pit and the length of time when the number of sampling clock count shore consumed as B, according to the clock period t, to obtain constants a statistical consecutive pits and land consumed time T '= BXt, i.e. a data read at the moment It is T ', and further to obtain the length of the data frame time Tl = T'.

[0088] 2)获取相关参数_通道位时间长度T2 [0088] 2) obtain relevant parameters _ channel bit time length T2

[0089] 与前述构思相同,首先在记录介质数据读取前,通过统计一定数量的数据帧的坑岸数来确定记录介质上每帧数据形成的坑岸总数A ;确定统计连续常数A个坑和岸时所消耗的采样时钟数个数为B,根据时钟周期为t,得到统计连续常数A个坑和岸时所消耗的时间T' =BXt,也就是此刻读取一帧数据的时间长度为T';确定一帧数据的通道位总长度为M'(具有帧结构的数据,M'是已知的,即具有帧结构的数据帧的通道位是固定的,因此有帧结构衡线速通道位的数据帧的物理长度就是固定的,这里的物理长度指在记录介质上的尺寸长度),即数据帧的游程长度为M',得到通道位时间长度的为T2= (BXt)/M'。 [0089] with the same concept, the data is first read before the recording medium, by the number of land pit certain number of frames the statistics to determine the total number of pits on the recording medium A land data of each frame is formed; continuously determining statistical constants A pit and the length of time when the number of sampling clock count shore consumed as B, according to the clock period t, to obtain constants a statistical consecutive pits and land consumed time T '= BXt, i.e. a data read at the moment to T '; determining a total length of the channel bit data into M' (having a data frame structure, M 'is known, i.e., channel bit data frame having a frame structure is fixed, so there is a frame structure balanced line data rate channel bit frame physical length is fixed, the physical length here refers to the size of the length in the recording medium), i.e., data frames run length M ', to obtain the channel bit length of time is T2 = (BXt) / M '.

[0090] 3)获取相关参数_坑岸时间长度T3 [0090] 3) Pit obtain relevant parameters _ land length of time T3

[0091] 与前述构思相同,首先在记录介质数据读取前,按上述方法获取记录介质上每帧数据形成的坑岸总数A ;确定统计连续常数A个坑和岸时所消耗的采样时钟数个数为B,根据时钟周期为t,得到统计连续常数A个坑和岸时所消耗的时间T' = BXt,也就是此刻读取一帧数据的时间长度为T';如果坑岸是单位通道位物理长度的χ倍,即坑岸在物理长度上所包含的通道位个数为X,在确定记录介质上一帧数据的通道位总长度M'的情况下,则各个长度的坑、岸的时间长度(也称坑岸时间长度)为T3 = (BXt-M' )Xx。 [0091] with the same concept, the data is first read before the recording medium, obtaining the total number of pits on the recording medium A land data of each frame is formed as described above; it is determined that the number of sampling clock statistical constants A two consecutive pits and lands consumed the number is B, according to the clock period t, to obtain constants a continuous time statistics pits and lands consumed T '= BXt, i.e. a length of time at the moment of reading data T'; if a unit pit land χ times the physical length of the channel bits, i.e., the number of channel bits in the physical length of the pit land included is X, is determined in a case where the total length of the channel bit data on a recording medium M ', the length of each pit, shore length of time (also referred to as land length pit time) T3 = (BXt-M ') Xx.

[0092] 4)获取相关参数_记录介质转速ν [0092] 4) obtain relevant parameters _ recording medium speed ν

[0093] 与前述构思相同,与前述构思相同,首先在记录介质数据读取前,按上述方法获取记录介质上每帧数据形成的坑岸总数A ;确定统计连续常数A个坑和岸时所消耗的采样时钟数个数为B,根据时钟周期为t,得到统计连续常数A个坑和岸时所消耗的时间T'= BXt,也就是此刻读取一帧数据的时间长度为T';由于记录介质的转速跟物理长度有关, 因此针对衡线速通道位记录介质,在确定记录介质上每帧数据的物理长度C的情况下,计算出记录介质的转速ν = C + T' =C+(BXt)。 [0093] As in the previous concept, the same concept, the data is first read before the recording medium, obtaining the total number of pits on the recording medium A land data of each frame is formed as described above; determining statistical constants A consecutive pits and lands when the the number of sampling clock number consumed as B, according to the clock period t, to obtain constants a continuous time statistics pits and lands consumed T '= BXt, i.e. the length of time at the moment the read data into a T'; Since the speed related with the physical length of the recording medium, and therefore for the balance line-rate channel bits of the recording medium, in the case of determining the recording physical length C of each frame of data on the medium, calculate the speed of the recording medium ν = C + T '= C + (BXt).

[0094] 从上述数据帧时间长度、通道位长度和坑岸时间长度的测定方法可以看出,其只与时间有关,与物理长度没有关系,因此这种测定方法对衡线速通道位记录介质和非衡线速通道位记录介质都有效。 [0094] From the time length of the data frame, the channel bit length of the pit and land length determination time can be seen, which is just time, no relationship with the physical length, the recording medium of this assay balanced line-rate channel bits and non-linear speed value recording medium channel bits are valid.

[0095] 由于是每A个坑岸便计算出一组通道位时间长度、各个长度坑和岸的坑岸时间长度、数据帧时间长度和记录介质转速。 [0095] Since every pit A land will calculate the length of time a group of channel bits, the length of time of each land pit length of pits and lands, the data frame time length and the recording medium speed. 为了减少最后值与真实值的误差,可以将连续计算出来的N(其中N > 1,且N为整数)组通道位时间长度值、坑岸时间长度值、数据帧时间长度值和记录介质转速值,进行均值滤波去噪处理最终得到更接近真实的值。 In order to reduce the error the last value of the true value, it can be continuously calculated N (where N> 1, and N is an integer) sets the channel bit duration value, the pit land duration value, the data frame time length value and the recording medium speed value, the mean filter denoising finally obtained closer to the true value.

[0096] 本发明技术方岸构思的核心是要统计适当数量的数据帧的坑岸数来确定每帧坑和岸的总数接近的常数A,然后基于常数A进行记录介质数据读取过程中相关参数的计算。 [0096] The core technical aspects of the inventive concept shore to shore statistical pits suitable number of frames of data to determine the total number of constants A close pits and lands of each frame, and then the recording medium based on the data read process related constant A calculation parameters. 如果统计连续常数NXAN(N> 1,且N为整数)个坑和岸时所消耗的采样时钟数个数为Bi, 根据上面的推理过程,最终会得到读取一帧数据的时间长度为Tl = BlXt-N ;在确定记录介质上N帧数据的通道位总长度M的情况下,通道位时间长度为T2 = BlXt-M ;在确定了记录介质上N帧数据的通道位总长度M和记录介质上不同长度的坑岸所包含的通道位个数X后,坑岸时间长度为T3 = (BlXt-M) Xx ;在确定记录介质上每帧数据的物理长度C的情况下,记录介质的转速ν = (NXC)^(BlXt);如果整数N取值越大,随机N个帧的坑岸的总数除以N就越接近Α,反之,如果N取1时,随机抽取一帧数据得到的一帧的坑岸数与A的差值范围越大。 If continuous statistical constant NXAN (N> 1, and N is an integer) the number of sampling clock pits and lands hours consumed as Bi, according to the above reasoning, eventually you get a length of the data read time Tl = BlXt-N; in the determination of the recording medium case where channel bit total length M of N-frame data, channel bit time length T2 = BlXt-M; determined the channel bit total length M of the recording medium N-frame data and after the number of channel bits on a recording medium X pit length land included in different pit land time length T3 = (BlXt-M) Xx; in the case of determining the physical length C of each frame of data on the recording medium, the recording medium the speed ν = (NXC) ^ (BlXt); If the integer value of N increases, the total number of random pit land N frames by N [alpha] closer, on the contrary, if N is 1, a random data the greater the difference the number of land and pit a range obtained one frame. 所以,根据上面的逻辑推理,统计整数N个帧的坑岸的总数要比统计单个帧的坑岸数计算得到的数据要更准确,这样就省去了统计单个帧的坑岸数计算得到的上述相关参数需要进行均值滤波去噪的处理过程。 Therefore, according to the above logic, the total number of frames of integer N statistical land pit pit land statistics than a single frame of data to be calculated more accurately, thus eliminating the number of pits land statistics calculated single frame the above-mentioned process parameters required mean filter denoising.

[0097] 实施例2 [0097] Example 2

[0098] 本实施例以记录介质DVD5为例,假如在未知速度对DVD5进行数据读取时,我们知道DVD5的每帧的数据时钟是1488Τ(即每帧的通道位为1488,或者说原始的数字信号有1488个bit),图2是对DVD5的每帧的坑和岸的总数统计图,由此可知,数据帧的坑和岸的总数接近常数315,因此在对数据采样时,可以每经过315个坑岸时记下经过的时钟个数B2,时钟周期为t,于是得到此刻的数据帧时间长度为Tl = B2 X t,通道位时间长度为T2 = B2 Xt +1488 ;DVD5的坑和岸包含的通道位个数种类有:3个通道位,4个通道位,5个通道位,6个通道位,7个通道位,8个通道位,9个通道位,10个通道位,11个通道位,14个通道位,其中14个通道位的坑或者岸为帧头,因此,本实施例中计算得到DVD5各个长度的坑、岸的坑岸时间长度为:B2Xt + 1488X3、B2Xt + 1488X4、B2Xt + 1488X5、B2Xt + 1488X6、 B2Xt + 1488X7、B2Xt + [0098] In this embodiment, the recording medium DVD5 an example, if the time of reading data DVD5 unknown speed, we know that every frame is a data clock DVD5 1488Τ (i.e., channel bits per frame is 1488, or the original there are 1488 'bit digital signal), FIG. 2 is a chart of the total number of each frame of the pits and lands DVD5, can be seen, the total number of pits and lands data frame 315 is nearly constant, and therefore when the data sampling may each be 315 passes through hole land note the number of clock B2, clock cycle is t, then the length of the frame to obtain the time at which data is Tl = B2 X t, the channel bit time length T2 = Xt +1488 B2; pit of DVD5 the number and type of channel bits comprising shore are: 3 channel bits, four channel bits, 5 channel bits and 6 channel bits, seven channel bits, 8-bit channel, channel bits 9, 10 channel bits 11 channel bits and 14 channel bits including 14 channel bits as the pit or a land header, therefore, the present embodiment is calculated to obtain the length of each pit DVD5, the length of the pit to land land time: B2Xt + 1488X3, B2Xt + 1488X4, B2Xt + 1488X5, B2Xt + 1488X6, B2Xt + 1488X7, B2Xt + 1488X8、B2Xt + 1488X9、B2Xt + 1488X10、B2Xt + 1488Xll、 B2Xt + 1488X14 ;而且我们知道DVD5的3个单位通道位的物理长度为400nm,因此计算得到的记录介质的转速(每秒中转过的物理长度)接近ν = 400 + 3X1488 + T1 = 400 + 3X1488+ (B2Xt)。 1488X8, B2Xt + 1488X9, B2Xt + 1488X10, B2Xt + 1488Xll, B2Xt + 1488X14; DVD5 and we know the physical length of three bits per channel is 400nm, the rotational speed of the recording medium thus obtained is calculated (the physical length of the second rotated ) close ν = 400 + 3X1488 + T1 = 400 + 3X1488 + (B2Xt).

[0099] 由于是每315个坑岸便计算出一组通道位时间长度值、各个长度的坑岸时间长度值、数据帧时间长度值和记录介质转速值。 [0099] Since every hole land 315 will calculate a set value of the channel bit duration, the time the pit length value of each land length, the data frame time length value and the recording medium rotation speed value. 为了减少最后值与真实值的误差,我们可以将连续计算出来的N(其中N>1,且N为整数)组通道位时间长度值、各个长度的坑岸时间长度值、数据帧时间长度值和记录介质转速值,进行均值滤波去噪处理最终得到更接近真实的值。 In order to reduce the error the last value of the true value, we can continuously calculated N (where N> 1, and N is an integer) sets the channel bit duration value, the pit land length of time values ​​of the respective length of the data frame time length value and a recording medium rotation speed value, mean filter denoising finally obtained closer to the true value.

[0100] 以上实施方式仅用于说明本发明,而并非对本发明的限制,有关技术领域的普通技术人员,在不脱离本发明的精神和范围的情况下,还可以做出各种变化和变型,因此所有等同的技术方案也属于本发明的范畴,本发明的专利保护范围应由权利要求限定。 [0100] the above embodiments are merely illustrative of the present invention, and are not restrictive of the invention, relating to ordinary skill in the art, without departing from the spirit and scope of the present invention, can make various changes and modifications , all equivalent technical solutions also within the scope of the present invention, the scope of the present invention patent is defined by the appended claims.

Claims (9)

  1. 1. 一种获取记录介质数据帧时间长度的方法,用于获取所述记录介质数据读取过程中的数据帧时间长度,包括步骤:获取记录介质上每帧数据形成的坑岸总数A ;在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间T,其中N > 1,此N 为整数;通过计算每帧数据读取所用时间得到数据帧时间长度Tl = T/N, 其中,获取记录介质上每帧数据形成的坑岸总数A包括步骤:以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数;统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,-,Sn, η为正整数,代表不等的游程数值的个数;将与最大的数据帧个数对应的游程数值确定为记录介质上每帧数据形成的坑岸总数Α;或通过下式获取记录介质上每帧数据形成的坑岸总数A 1. A method of acquiring data frame time duration of the recording medium, a method for acquiring data frame time length of the recording medium, the data reading process, comprising the steps of: acquiring pit shore A total number of each frame of data on the recording medium is formed; in the recording medium, the data reading process, the statistical consecutive AXN pit land used time T, where N> 1, where N is an integer; time used to obtain the data frame length of time Tl = T / N by calculating the data of each frame is read, wherein pit land Total a acquires the recording medium for each frame of data is formed comprising the step of: after the run value in units of frames statistical modulation encoding out of a plurality of data frames, the run value of the data frame recorded to the recording medium will the total number of pits formed in the land; A1 run values ​​ranging statistical occurring, A2, ..., An and the data frame number corresponding to each of S1, S2, -, Sn, η is a positive integer representing a run value ranging number; and determining run values ​​corresponding to the maximum number of data frames is the total number of pits on the land data recording medium is formed of [alpha] for each frame; formula by obtaining the pit or land on a recording medium a total number of each frame of data is formed : V /=1 J /=1 : V / = 1 J / = 1
  2. 2.根据权利要求1所述的方法,其特征在于,所述N为1,该方法中,在连续获得若干个数据帧时间长度后,对其进行均值滤波去噪处理得到优化后的数据帧时间长度。 2. The method according to claim 1, wherein said N is 1, the process, after a plurality of consecutive frame time length data, its data after denoising process is optimized mean filter frame length of time.
  3. 3. 一种获取记录介质转速的方法,用于针对衡线速通道位记录介质,获取所述记录介质读取过程中的记录介质转速,包括步骤:确定记录介质上每帧数据的物理长度C ; 获取记录介质上每帧数据形成的坑岸总数A ;在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间Τ,其中N > 1,此N 为整数;通过计算所述记录介质单位时间内转过的物理长度得到记录介质转速ν = (NXC)/Τ, 其中,获取记录介质上每帧数据形成的坑岸总数A包括步骤:以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数;统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,-,Sn, η为正整数,代表不等的游程数值的个数;将与最大的数据帧个数对应的游程数值确定为记录介质上每帧数据 A method of obtaining the recording medium speed, line speed for the recording medium channel bit value for obtaining the recording medium, the recording medium speed during reading, comprising the steps of: determining the physical length C of each frame of data on the recording medium ; Get the total number of pit a land on the recording medium each frame of data is formed; in the recording medium the data reading process, the statistical AXN successive pits land used time Τ occurs, where N> 1, where N is an integer; recording by calculating the turned physical length of the recording medium to obtain the medium speed ν unit time = (NXC) / Τ, wherein the total number of land acquisition pit a on each frame of data recording medium is formed comprising the steps of: statistical units of frames out of a plurality of modulation and coding data frames run value, the run value of the data frame recorded to the total number of pits on the land of the recording medium after the formation; A1 run values ​​ranging statistical occurring, A2, ..., an and the corresponding data number of frames S1, S2, -, Sn, η is a positive integer representing the number of run values ​​ranging; corresponding to the maximum number of data frames run value is determined for each frame of data on a recording medium 形成的坑岸总数 The total number of pits formed shore
    Figure CN101510429BC00021
    或通过下式获取记录介质上每帧数据形成的坑岸总数A : Get the total number of pits or land on a recording medium A for each frame of data is formed by the following formula:
    Figure CN101510429BC00022
  4. 4.根据权利要求3所述的方法,其特征在于,所述N为1,该方法中,在连续获得若干个记录介质转速后,对其进行均值滤波去噪处理得到优化后的记录介质转速。 4. The method according to claim 3, wherein said N is 1, the process, after a plurality of consecutive recording medium speed, its mean filter denoising to obtain an optimized speed of the recording medium .
  5. 5. 一种获取记录介质通道位时间长度的方法,用于获取所述记录介质读取过程中的通道位时间长度,包括步骤:确定记录介质上N帧数据的通道位总长度M,其中N > 1,此N为整数; 获取记录介质上每帧数据形成的坑岸总数A ; 在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间T ; 通过计算读取每帧数据中的通道位所用时间得到通道位时间长度T2 = T/M, 其中,获取记录介质上每帧数据形成的坑岸总数A包括步骤:以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数;统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,-,Sn, η为正整数,代表不等的游程数值的个数;将与最大的数据帧个数对应的游程数值确定为记录介质上每帧数据形成的坑岸总数或通 Method medium channel bit length A time acquisition records for obtaining the time length of channel bit recording medium reading process, comprising the steps of: determining the total length of channel bits M of data on a recording medium of N frames, where N > 1, where N is an integer; a total number of land acquisition pits on a recording medium, each frame of data is formed; in the recording medium the data reading process, the statistical AXN successive pits land used time T occurs; calculated by reading the data for each frame channel bit time used to obtain channel bit duration T2 = T / M, wherein acquiring pit land Total a recording medium for each frame of data is formed comprising the step of: run value in units of frames statistical modulation encoding out of a plurality of data frames the run value of the data frame recorded to the total number of pits on the land of the recording medium after the formation; A1 run values ​​ranging statistical occurring, A2, ..., an and the corresponding frame number data Sl, S2, -, Sn, η is a positive integer representing the number of run values ​​ranging; corresponding to the maximum number of data frames to determine run values ​​for the total number of pits on land or on a recording medium, each frame of data is formed 下式获取记录介质上每帧数据形成的坑岸总数 Get the total number of the pits of formula land on a recording medium, each frame of data is formed
    Figure CN101510429BC00031
  6. 6.根据权利要求5所述的方法,其特征在于,所述N为1,针对衡线速通道位记录介质, 在连续获得若干个通道位时间长度后,对其进行均值滤波去噪处理得到优化后的通道位时间长度。 6. The method according to claim 5, wherein said N is 1, the value for the linear velocity of the recording medium channel bits in several consecutive channel bits length of time to obtain its mean filter denoising channel bit length of time after the optimization.
  7. 7. 一种获取记录介质坑岸时间长度的方法,用于获取所述记录介质读取过程中的坑岸时间长度,包括步骤:确定记录介质上N帧数据的通道位总长度Μ,其中N > 1,此N为整数;确定记录介质上不同长度的坑岸所包含的通道位个数χ ;获取记录介质上每帧数据形成的坑岸总数A ;在记录介质数据读取过程中,统计连续出现AXN个坑岸所用时间T ;获取不同长度坑岸的坑岸时间长度Τ3= (Τ/Μ)Χχ,其中,获取记录介质上每帧数据形成的坑岸总数A包括步骤:以帧为单位统计调制编码出来的若干个数据帧的游程数值,所述游程数值为将该数据帧记录到记录介质上后会形成的坑岸总数;统计所出现的不等的游程数值A1, A2,…,An及其分别对应的数据帧个数S1, S2,-,Sn, η为正整数,代表不等的游程数值的个数;将与最大的数据帧个数对应的游程数值确定为记录介质上每帧 A method for obtaining a recording medium of the pit length of time the land, land pit length of time for acquiring the medium during reading of the record, comprising the steps of: determining the total length of the channel bit frame data on a recording medium in [mu] N, where N > 1, where N is an integer; determining the number of channel bits recorded pit land χ medium contained different length; a total number of land acquisition pits on a recording medium, each frame of data is formed; in the recording medium the data reading process, the statistical consecutive AXN pit land the time T used; (Τ / Μ) Χχ acquired length pit land time Τ3 different lengths of pits shore =, wherein acquiring pit land Total a recording medium for each frame of data is formed comprising the steps of: a frame statistical units modulation encoding out of a plurality of data frames run value, the run value of the data frame recorded to the total number of pit land on the recording medium after the formation; unequal run value A1 statistics occurring, A2, ... , An and the data frame number corresponding to each of S1, S2, -, Sn, η is a positive integer number, representing varying run values; and determining the maximum run value corresponding to the number of data frames to a recording medium each frame 据形成的坑岸总数Α;或通过下式获取记录介质上每帧数据形成的坑岸总数A : The total number of pits formed in the land data [alpha]; A land or obtaining the total number of pits on the recording medium for each frame of data is formed by the following formula:
    Figure CN101510429BC00041
  8. 8.根据权利要求7所述的方法,其特征在于,所述N为1,针对衡线速通道位记录介质, 在连续获得若干个坑岸时间长度后,将相同长度坑岸的坑岸时间长度进行均值滤波去噪处理得到优化后的坑岸时间长度。 8. The method according to claim 7, wherein said N is 1, the value for the linear velocity recording medium channel bits, after a plurality of consecutive pits land length of time, the same land length pit pit land time mean filter denoising length pits land length of time to obtain the optimized.
  9. 9.根据权利要求1〜8任一所述的方法,其特征在于,所述记录介质上数据具有帧头, 所述获取记录介质上每帧数据形成的坑岸总数A包括的步骤替换为以下获取记录介质上每帧数据形成的坑岸总数A包括的步骤:在记录介质读取过程中将持续时间在设定范围内的坑或岸记为帧头,由所述帧头确定数据帧;连续统计读取若干个数据帧时每个数据帧所出现的坑岸总数,得到不等的坑岸总数A' ι;Α' 2,...,k' nl及其分别对应的数据帧个数S' 1?S' 2,...,S' nl,nl为正整数,代表不等的坑岸总数的个数;将与最大的数据帧个数对应的坑岸总数确定为记录介质上每帧数据形成的坑岸总数Α;或通过下式获取记录介质上每帧数据形成的坑岸总数A : 9. A method according to any one of claims 1~8, wherein said data recording medium having a header, said step of acquiring pit shore A total number of each frame of data on the recording medium is formed comprising the following alternative a total number of pits on a land step acquires each frame of data recording medium is formed comprising: a recording medium in a reading process duration pit or the land is set within the range referred to as the frame header, the frame header is determined by the data frame; statistical continuously reading a plurality of data frames for each data frame is the total number of pits occurring land, the land to give the total number of pits ranging from a 'ι; Α' 2, ..., k 'nl and a corresponding data frame number of S '? 1 S', the number 2, ..., S 'nl nl is a positive integer representing the total number of pits ranging land; Total land pit corresponding to the maximum number of data frame is determined as a recording medium, the total number of each frame of data pits formed on the land of [alpha]; a land or obtaining the total number of pits on the recording medium for each frame of data is formed by the following formula:
    Figure CN101510429BC00042
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1203415A (en) 1997-06-19 1998-12-30 索尼株式会社 Optical disc and optical disc drive
CN1274149A (en) 1999-04-21 2000-11-22 三星电子株式会社 Optical recoding medium, its recording/reproducing method
WO2006067701A2 (en) 2004-12-20 2006-06-29 Koninklijke Philips Electronics N.V. Robust position detection for incremental recording

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1203415A (en) 1997-06-19 1998-12-30 索尼株式会社 Optical disc and optical disc drive
CN1274149A (en) 1999-04-21 2000-11-22 三星电子株式会社 Optical recoding medium, its recording/reproducing method
WO2006067701A2 (en) 2004-12-20 2006-06-29 Koninklijke Philips Electronics N.V. Robust position detection for incremental recording

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