TW201025310A - Recording medium, method and device for its production as well as method and device for writing and reading of information - Google Patents

Abstract

A recording medium (1) has a servo track or an arrangement of servo tracks which are suitable for guiding a scanning beam or a plurality of scanning beams of an information recording and/or playback device and at least sectionwise for the formation, representation or storage of main data. The servo track or the arrangement of servo tracks contains at least sectionwise a wobble signal (22) containing period ranges (20) of a first signal with the periodic time T0 and half period ranges (21) of a second signal. Here, half period ranges (21) of the second signal are interposed between the period ranges (20) of the first signal.

Description

201025310 VI. Description of the Invention: [Technical Field] The present invention relates to a recording medium, a manufacturing method and apparatus thereof, and a device for writing information on a S-recorded medium or from a separate medium. (i.e., for recording) and/or reading (i.e., for playing) methods and apparatus. An important example for such recording media is, for example, a magnetic recording medium such as a so-called optical recording medium such as a so-called DVD (for example, DVD+R, DVD-R, DVD+RW or DVD-RW, etc.). The optical reflection or transmission properties of the materials used by the consumer may be reversibly or irreversibly altered, for example, by appropriate wavelengths and/or intensity of laser light. This recording medium is also often referred to as an information carrier or data carrier. As far as optical § recorded media is concerned, in the context of the present invention, the "optical" designation will not exclude the use of wavelength electromagnetic fields or electromagnetic radiation having a visible range. In the present invention, for the sake of simplicity, if "a servo track is mentioned, as long as it is not explicitly indicated or contradicted herein", this will also indicate the configuration of many servo tracks. [Prior Art 3 Background of the Invention An optical recording medium typically has a pre-formed servo track which, when compared to a peripheral surface, may be a dimple or a protrusion (a so-called "disc surface track"). As an example, it is pre-formed as a dent. One of the squat tracks may be partially or completely filled with a material whose reflective 戍 transmission properties are reversible or irreversible by appropriate intensity of laser radiation. When information is written When the recording medium is used, the data can be written into the pre-formed servo track through an information recording device, and the data can be read again by the intentional reflection or the change of the traveling behavior. - The area of intentional optical change is also called the main data dent. ~ In order to produce the largest possible storage capacity of the recording medium, the main data recess is required. Traces and surfaces laid between them (also referred to as ''the surface of the disc needs to have as small a scale as possible. In order to maintain the accuracy of the mechanical components for reading and writing information recording and/or playback devices suitable for economical fit) As a result, when the information stored therein is read, the servo track is usually also used to guide the scanning beam of the information playback device used. In this way, even if a data structure having a small scale is written, The required guidance accuracy can also be achieved. Typically, the servo track has further features that provide information about the linear recording rate at which the data will be written. As an example, the servo track can be sinusoidally shaped using a predetermined spatial frequency. The wave mode is deflected toward its center of the track (also referred to as "track wobble"). For a recording medium in the form of a disc, the spatial frequency determines, for example, the rotation of the motor ("disc motor") that rotates the recording medium. Frequency. Some forms of this recording medium are auxiliary information in the servo track that includes a continuous address code at the factory - for use in Orientation of the recorded data carrier. This recording medium is described in the description of European Patent No. EP0325330, wherein the spatial frequency of the servo track is changed according to its auxiliary information. U.S. Patent No. 5,999,504 and European Patent No. 4 201025310 The description of EP 1066628 describes an embodiment in which the phase of the wobble signal is continuously changed in accordance with the auxiliary information. As commercial information, the recording and/or playback device must accept a continuously increasing number of different recording media, The recording medium has different recording methods, recording rates, and recording materials, and also has different writing parameters required for the respective media recordings. Therefore, in some embodiments, the recording medium is stored in the servo track at the time of shipment. Auxiliary information is enhanced by being enhanced with a control code that includes write parameters that are designated for use in the recording medium. For example, European Patent No. Ep 397 238, which claims a record carrier in which a pre-formed orbital modulation comprising a sinusoidal wave modulation using orbital or track width change, including a bit address code And auxiliary information of a control code is recorded in a pre-formed track. An unfortunate result of using a change in the spatial frequency of the servo track is that the data rate of the auxiliary information, which can be included in the track modulation, significantly limits the data signal to be recorded to be as small as possible. Using a method of discontinuously changing the phase of the wobble k-number (U.S. Patent No. 5,995,952, and European Patent No. EP1066628), a kink in the wobble signal is generated, which causes a significant increase in the required bandwidth. These methods are detrimental to the effect of the main data signal (primary data dent) to be recorded, for example, giving a higher auxiliary data rate 'generating a high wobble frequency' and thus modulating the higher frequency segment of the wobble signal will be The lower frequency segments of the primary data signal overlap. For optical recording media of high storage density, the method for pre-recording auxiliary information has been described as 'not based on modulation of the servo track, but by pre-formed concaves disposed in or outside the track of the service. The mark is realized. 5 201025310 US Pat. No. 6,661, 489 describes a recording medium having a servo track. The servo track does not have track wobble in certain areas and is discontinuous (also referred to as "pre-formed dent area"). In these areas, which are not intended for data recording, the pre-formed indentations are preformed to have dimensions similar to the main data indentations. The master data will be recorded separately in the servo track or on the surface of the disc. In the track. The pre-formed indentations are alternately disposed in a pre-formed indentation region extending along a boundary between the servo track and the surface track of the disc, such that the pre-formed indentation occurs on either side of the center of the servo track or the center of the track surface of the disc Above, does not include the simultaneous formation of dents on the immediate adjacent boundary. Due to the synchronization of the rotational frequency of the recording medium, it can only be completed in the pre-formed dent area, which may be disadvantageous when interference occurs. [German Patent No. DE69727710, and US Patent No. US6611489] contains a servo. The track is pre-formed into a oscillating recording medium. The recording medium of the U.S. Patent No. 6,661, 489 and the German Patent No. DE 697,277,10, due to the discontinuity of the servo track, may have no data recorded in the pre-formed dent area, which results in a loss of storage capacity. It is therefore possible to introduce a pre-formed indentation in a continuously preformed servo track region, which is arranged in a predetermined interval of equal length between the disc surface and the adjacent servo track, in the case of U.S. Patent No. 6,066,411. center. These intervals correspond to the length of the recording section of the main data dent. Due to their dimensions, which are similar to the main data indentation scale and therefore have a width similar to the disc surface or servo track, respectively, the pre-formed indentations cannot be staggered in the center of the servo track, which would otherwise result in an overlap. These overlaps will lead to crosstalk problems, which may interfere a lot with the estimate of the pre-formed concave 201025310. Thus, the pre-formed indentation sequence is configured with these products only on the servo-arm side that is closest to the pre-formed indent sequence along the radial direction. From the permanent side configuration of the pre-formed indentations relative to the center of the track, a DC component vector of the tracking signal is generated which may result in a permanent error bias of the used information recording and/or beam guiding means of the playback device. Furthermore, the problem that arises is that the data signals generated by the optical scanner are significantly affected by the pre-formed dents, since these extend in large numbers.

The servo track is entered and thus the servo track width in the pre-formed indentation area is significantly reduced. SUMMARY OF THE INVENTION In accordance with the purpose and solution of the present invention, it is therefore an object of the present invention to provide a technique which avoids the above-mentioned and further disadvantages of the prior art as much as possible, and (4) possibly compatible with existing recording media. . This purpose is achieved according to one of the independent patent applications, == recording media, its manufacturing method and device, and (4) reading and writing the information on or in this recording medium. . The preferred extension of the invention is the main content of the attached item of the patent scope. According to the present invention, the δ-recorded medium has a feed which is suitable for the second or second, or a plurality of beams, and is used at least in sections for the t-domain, the surface, and the storage. Correction (4) Ut or Xiangyi track Mantle-swing signal, the sway signal includes a stalk period section with 〆 ° and a half of the second signal 7 201025310 11 period section. Thus the half cycle reduction of the second signal is between the periodic segments of the second signal. Here, it mainly involves the operation of a track or track configuration in a substantially spiral or concentric manner. This track or tracks need not necessarily be the primary material that can be used continuously to form, represent or store the so-called primary data dent form. The formation, representation or storage of this primary material is achieved by localized changes defined by at least one of the physical properties of at least one of the materials in the orbits. It is best to 'this is the reflection and/or the behavior of the wheels in certain areas of the track. The present invention can also be realized by a device for manufacturing a recording medium according to the present invention, in which an optical device records a servo track on a main board by a light beam. Here, the optical device includes a modulator for generating a modulated beam, and the modulator is controlled by a signal generator that generates a control signal according to a wobble signal, wherein the wobble signal includes a period-cycle The period section of the -th signal and the half period section of the second signal 'the half-cycle section of the second signal are between the first signal sections. The present invention can also be implemented by a method of manufacturing a recording medium. The media device uses an optical device for recording a feeding track on a main board through a light beam. The optical device includes a modulated light beam. The air conditioner and the modulation n are controlled by a signal generator that generates a control signal according to the wobble signal, wherein the wobble signal includes, and has a cycle time τ. The period of the H segment and the half period of the second signal, the half period of the second signal is between the period segments of the second number. 201025310 The invention can also be implemented by a device for recording information on a recording medium and/or for playing information from the recording medium, respectively, by means of an optical device, wherein the optical device is used to The data dent is recorded in a servo track and/or the master data is played from the servo track. The device includes a wobble signal from which a group detector is derived, wherein the wobble signal includes one of a cycle time τ 〇 a periodic section of the first signal and a half-cycle section of the second signal, the half-cycle section of the second signal being between the periodic sections of the first signal. The present invention can also be implemented by a method for separately recording and/or playing back information on a recording medium or from a recording medium, the apparatus using the recording of main data dents in a servo track and And/or an optical component for playing one of the master data from the servo track, and using one of a group of detectors including a wobble signal derived therefrom, the wobble signal comprising a first signal having a period of time τ〇 And a half-period segment of the second signal, the half-period segment of the second signal being between the periodic segments of the first signal. BEST MODE FOR CARRYING OUT THE INVENTION A preferred extension of the present invention will now be described. Preferably, one of the recording media according to the present invention extends wherein a half cycle segment of the second signal between the periodic segments of the first signal occurs at least partially in pairs. This has the advantage that the half-cycle segments appearing in pairs can be configured in such a way that the integration of the second signals in these half-cycle segments occurring in pairs is zero. Here, "at least partially" means that the semi-period segments can be further extended in accordance with the embodiment of the invention - continuously or exactly segmentally in a pairwise form according to the further extension of the recording medium of the invention. Preferably, the cycle time of the 彳° is twice the predetermined cycle time τ〇 of the first signal. This has the advantage that a clock signal can be derived, in particular in a simple manner, from a corresponding wobble signal. A further extension of the recording medium according to the invention is preferably wherein the sequence of half-cycle segments of the second signal appearing in pairs is assisted by the different periodic segments of the sequence and the semi-periodic segments One of the data signals is encoded by a value or "Γ," which simplifies or facilitates the detection of binary values. Further extension of the recording medium according to the present invention is preferably wherein the binary value of the auxiliary data signal is used in the heart. The number of half-cycle segments of the second signal in the sequence of "0," half cycle segments and in the half cycle segment sequence for the binary value "1" of the paste-assisted data signal is the same. Preferably, the further extension of the recording medium according to the present invention, wherein the auxiliary apostrophe comprises at least one sync symbol, and wherein the second signal is in a sequence of semi-period segments for the sync symbol of the auxiliary data signal The number of half-cycle segments ·^, β is different from the sequence of semi-periodic segments in the binary-valued half-cycle segment sequence for the auxiliary data signal and the binary value 1 for the auxiliary data signal The number of half-cycle segments in the medium. The further extension of the recording medium according to the present invention is preferably, wherein the sequence of half-period segments of at least one sync symbol of the auxiliary data 彳5, and the binary for the auxiliary data signal The half-duty segment sequence of the value "〇", the sequence of the half-period segments with 201025310 and the binary value τ for the auxiliary data signal, each start with the __ half-cycle segment of the second signal. Preferably, the further extension of the recording medium according to the present invention is such that, in comparison to the first signal amplitude in the period +, the second signal amplitude in the half period is changed in such a manner that When the signal is swung, there will be no or no perception of discontinuous tilt changes and/or no or no perception of discontinuous value changes. Therefore, the spectral properties of the corresponding signals are improved, and there is a relatively easy or better detection capability. The inability or difficulty of "perceiving" discontinuities in these signals means providing improvements in the spectral properties of the corresponding signals. All signal characteristics are dominant or relevant in the context of the present invention. Further extension of the recording medium according to the present invention is preferably wherein The first signal in the periodic segment is no DC to f, and the half cycle segment of the second signal occurring in pairs is configured such that the second signal on the pair of half cycle segments The integration result is zero. The “no DC component” and “zero result” phrases are also signal properties, which means in this context that these criteria are closely observed. Here, most importantly, the advantages of these signal properties Achieved, that is, wherein the average DC component of the wobble signal and thus the average error signal produced by directing the scan beam in the center of the servo track can be permanently maintained at zero or near zero, and thus the self-inserted _ The beam tracking produced by the half-cycle section (21) of the 彳§ has no or no substantial adverse effects. Further extension of the recording medium according to the invention Preferably, it is characterized in that the length of the bit is fixed by a fixed code length of 11 201025310 degrees by selecting an arbitrary number of 信号 of the first signal period section which is added to the period of time τ ] of the length unit of VI. Alternatively, the number n is equal for the auxiliary data bit and the sync symbol in such a manner that the absolute value of the spectrum of the wobble signal becomes lower than a previously defined threshold at at least one frequency.

A further extension of the recording medium according to the invention is preferably wherein the first signal is sinusoidal or cosine in the periodic segment and the second signal is a sinusoid or cosine in the form of a segment in the half-cycle segment The curve 'the second signal in those segments whose absolute value is below a predetermined threshold is the same as the first signal, and those segments whose absolute values are above a predetermined threshold The amplitude of the two signals and the period of time are different from those of the first signal, the amplitude and the period of time being selected such that there is no discontinuous tilt change in the wobble signal and no discontinuous value change occurs. A further extension of the recording medium according to the invention is preferably wherein the auxiliary data signals that are sequenced into the periodic segment and the semi-periodic segment sequence comprise application data and/or control data and/or security data.

Some of the preferred extensions of the apparatus for making the recording medium of the present invention in accordance with the present invention produce a wobble signal having the features of any of items 2 through 12 of the patent application. Some preferred extensions of the method for fabricating the recording medium of the present invention in accordance with the present invention result in a wobble signal having the features of any of items 2 through 12 of the patent application. Yifeng invented the _~, 八, , 壻孜 壻孜 壻孜 壻孜 壻孜 壻孜 , , , , , , , , , , , , , , , , , 。 。 。 。 。 。 。 。 。 。 。 。 。 。 12 201025310 Further, the apparatus for recording and/or playing information is preferably wherein the wobble signal is fed to a decoder for decoding the auxiliary material signal, the decoder being designed to be provided by A comparator circuit and an edge control time measuring unit derive a clicker signal derived from the wobble signal to generate a rotational frequency control signal for the rotating unit of the information recording and/or playback device.

Further, the apparatus for recording and/or playing information is preferably, wherein the decoder includes a subtraction circuit for forming a difference signal to generate a difference between the comparator output signal and the oscillator signal. So as to generate sync symbols, auxiliary data bits, and auxiliary data by discrete correlation of the difference signals for sync symbols, auxiliary data bits = "〇,, and auxiliary data bits = "1" Bit = 1". Some preferred extensions of the method for recording and/or playing information in accordance with the present invention are the use of a wobble signal having one of the features of claims 2 through 12 of the scope of the patent application. Further, the method for recording and/or playing information according to the present invention is preferably wherein the money is fed to a decoder for decoding the auxiliary data signal. The decoder is designed to provide A 1-turn frequency control signal for the rotation unit of the information recording and/or playback device is generated from the comparator circuit and the edge-time quantum element from the signal. Preferably, the method for recording and/or playing information according to the present invention is preferably wherein the demodulator packet is flipped to form a difference signal, and the subtraction circuit X produces a difference between the output signal of the private device and the signal of the oscillator. Amount, 13 201025310 to generate a sync symbol, an auxiliary data bit by relying on the discrete correlation of the difference signal for the sync symbol, the auxiliary data bit = "〇, and the auxiliary data bit = 1," "〇" and auxiliary data bit = 'q'. BRIEF DESCRIPTION OF THE DRAWINGS Further advantages, features, and application possibilities of the present invention are more apparent in conjunction with graphical self-sequence descriptions. The first, lb, and 1C diagrams represent an embodiment of a wobble signal including the encoding of the binary auxiliary data bits (la, lb) and the auxiliary data sync symbol (lc). e Figures 2a and 2b respectively represent an embodiment of a smooth wobble signal with a small or negligible tilt step. Figure 3 is a diagram showing an embodiment of a method for recording and/or playing information according to the present invention using a recording medium according to the present invention. Figures 4a, 4b and 4c represent an embodiment of a signal for a decoder (37) of an auxiliary data signal. Figures 5a and 5b represent diagrams of the auxiliary data bit spectrum encoded according to the prior art with a bit length of 4 〇 cycles τ 。 . Figures 6a and 6b represent diagrams of the auxiliary data bit spectrum encoded according to the prior art with a bit length of 8〇 cycles τ〇. Figures 7a and 7b are diagrams showing the spectrum of an auxiliary data bit spectrum encoded by a wobble signal (22) having no singularity (4 steps) and no wobble (with a stepped step) in accordance with an embodiment of the present invention. Figures 8a and 8b are diagrams showing the spectrum of the auxiliary data bit spectrum of the wobble signal (22) without the smoothing (with a tilt step) of 80 cycles in accordance with an embodiment of the present invention. . Figures 9a and 9b are diagrams showing the spectrum of the auxiliary data bit spectrum encoded by the smoothing (no tilt step) wobble signal (22) of a 4 〇 period τ 〇 bit length in accordance with an embodiment of the present invention. Figures 10a and 10b are diagrams showing the spectrum of the auxiliary data bit spectrum encoded by the smoothed (no tilt step) wobble signal (22) of the 8 〇 period τ 〇 bit length in accordance with an embodiment of the present invention. Figure 11 represents a diagram of an embodiment of a decoder (37) of an auxiliary data signal. Fig. 12 is a view showing an embodiment of an apparatus for manufacturing a main board (61) which can be used as one of the original sheets of the recording medium (1) according to the present invention. Figures 13a and 13b represent graphs 0a and 14b for auxiliary data bits = "" difference signal (42) (1) and the difference signal is discrete (l3b) with itself. For the auxiliary data bit, the difference signal (42) (14a) and the discrete correlation of the difference signal with itself (10)). Figures 15a and 15b represent the difference signal for the sync symbol (10) (4) And the pattern of the discrete correlation (10) between the difference k and its own. The other, (10) and (6) graphs represent the discrete correlation (10) of the difference signal between the auxiliary data bit and the auxiliary data bit = τ, For the auxiliary data bit 〇 = "〇,, and the synchronization symbol S difference signal discrete correlation (Qing, and for the auxiliary data bit and the synchronization symbol difference signal discrete correlation (16c) pattern. C implementation 3 15 201025310 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In accordance with the present invention, a preferred embodiment of a delta recording medium has a configuration of a servo track suitable for directing-scanning a laser beam and includes a map for use in accordance with paragraphs b and c. One of the pictures is an oscillating L number that encodes an auxiliary signal. The number usually includes a weekly segment (10) having a first predetermined period of time without a direct current component (4). For the pre-recorded auxiliary data signal 2, the first signal appearing in pairs and having twice the predetermined period time τ〇 The half cycle segment is between the first signal period segments (10). Here, the pairwise half cycle segments (9) are arranged in such a way that the half cycle segments (2_ second) appear in pairs The integral result is zero. The meta-value (〇 or 1) uses the half-period segment (21) in the order of pairing: the code is broken so that the binary value is “〇, the half cycle is fine 2 (10) · ' Different from the one-dimensional value "丨, the spatial sequence of the half-cycle segment (21)] in order to recognize the transition from the first signal period segment (2〇) to the first k-th half-cycle segment in the swing k number ( 21) without (or imperceptible) a non-continuous bevel change 'compared with the first-signal amplitude, the amplitude of the second signal can be properly adjusted. Θ Since the first signal is DC-free and in one The first integral result within the half-cycle segment p) is zero The nature of the sinusoidal DC component of the wobble signal and thus the average error signal produced by directing the scanning beam in the center of the servo track is permanently maintained at zero. Therefore, embedding the second signal half-period segment (21) does not for beam tracking. Since the oscillating nickname is composed only of the vibration of the cycle time % or the cycle time ,, the cycle time τ 〇 one of the timing pulse signals can be derived from the pendulum 16 201025310 motion signal. For this purpose, Preferably, the control loop having an edge control time measurement is configured to control the clock signal in the form of a control oscillator signal according to the zero crossing of the wobble signal. By means of the clock signal of the cycle time, The reciprocal is that the main data bit rate control signal for a desired linear write rate can be derived to control the rotational frequency of the recording medium. An embodiment of the recording and/or playing method using the recording medium (1) according to the present invention will be explained using Fig. 3. The recording medium (1) has a configuration suitable for guiding a scanning track of a scanning laser beam and includes a wobble signal for encoding an auxiliary signal according to one of the figures la, b, and c (twenty two). The rotating unit (32) in Fig. 3 rotates the recording medium according to a rotational frequency control signal generated by the rotational frequency control unit (36), and the rotational frequency of the recording medium (1) can be, for example, designated In order to be used for recording and/or playback of the optical main beam (10) and the guiding beam (6) - a predetermined constant linear speed - a predetermined constant angular velocity. The optical unit (10) generates a main sweeping beam (5) and a two-direction sweeping cat beam (6) such that it (4) focuses on the information plane of the recording medium (1) and develops the scanning cat 1 beam on the - group photodetection (34) . The light detection section comprises a guided beam detector for guiding the broom beam (6) and a main beam detector for the main sweeping cat beam (3), the main broom beam (5), for example, being split into 4 beams . The intensity of the light impinging on the surface of a single detector is converted into an - electrical signal 'which is sub- (10) secretive to each surface element and transduced to a decoder (9) for auxiliary data, and is transduced to be used for recording main 17 201025310 Information dents solution 38). The rotation frequency control signal of the decoder (4) (22) is transmitted to the rotation frequency = element (10). - a central control unit (39), which may include = early or - signal processing computer, self-guided in a substantially conventional manner = and

The signal from the main beam detector is derived for radial positioning and appropriate control signals for the focusing optical unit (9), for example, by "adding y% to 111.1 plus works: New York, Westinghouse 8 Publishing The manual, described, is transmitted to the position and focus control unit (35), which controls horizontally for the radial tracking and for the optical unit (3〇) for the focus tracking. Movable lens. The monochromatic light intensity of the optical unit (10) must be higher than the switching threshold used for information recording - the specified switching threshold and lower than the _ 。. The dragon (four) degree butterfly is via the light control unit (33) This is achieved by means of a central control unit (39). Figure 1 shows an embodiment of a perturbation signal (22) according to the invention, the wobble apostrophe (22) comprising a binary auxiliary data signal encoding. The auxiliary data nickname may consider application data, safety information and control data.

Application materials include, for example, pre-recorded information, including, for example, instructions for processing recording media, • manufacturer-related advertising instructions, • image and/or sound recording services for entertainment or information, and the like. By. As the control data, it is possible to use, for example, • Light source intensity characteristics for information recording. 18 201025310 Pulse sequence characteristic recording medium for information recording light source Recording layer characteristics of recording medium for the recording rate characteristic recording area start address recording area stop Address • and similar. The category of safety information, for example, may include • key information used to allow recording of the recording media rights of certain program groups of the manufacturer • Manufacturer signing • and the like. As long as the ancillary data signal cannot be deleted and cannot be subsequently recorded by the user, this information is highly safe and relevant. Most of the further deployment possibilities are available to the experts in addition to the bandwidth of the application domain examples given. The auxiliary data signal preferably contains a sequence of binary values (auxiliary data bits) which can be designated as a binary number. A binary number is usually composed of logical elements "0" and "1". Suppose 'for example, an address containing 4 decimal digits will be encoded with a wobble signal (22) according to the present invention, and each decimal digit can be converted into a 4-bit BCD binary digit (decimal digit of the binary encoding) number). Therefore, each address contains a total of 4 (ten digits yield 4 bits = 16 bits, which can be aggregated into a series of data frames. Further, in addition to the address, it may also apply data, The safety data and the control data are given by the wobble signal (22) 19 201025310 =. Therefore, the 'data frame can be 0. This information ^ is increased, and for the sake of error security, the redundant bit can be additionally inserted into the message. Frame.

The data frame obtained in this way is encoded in the bit pattern_row by the wobble signal (η) according to one of the pictures in the first, the first, and the second. The branch of the data element ('‘〇,,,1', 'sync':=step symbol) indicated by the wobble number (22) in this figure is delimited by two vertical dotted lines. In all of these; the prime (0, 1, Sync") has the same length of the indicated segment 'obtained with - pre-(four) period % of the first - no DC component signal period segment (10) and has twice the predetermined week Second letter

= The sequence of the half-week segment (9), which preferably appears in pairs, which represents: other data elements. The signal characteristic within the half-cycle section (9) is a staggered complement 'i', i.e., the half-period (21) exhibits a negative waveform containing the second signal and a positive waveform of the signal at the first, b, and e. Therefore, the average value of the two consecutive Snapdragon segments (9) is obtained from the score of the second signal of the half-duty group and becomes zero. Since the first signal in the periodic section (10) and the second signal in the pair of half-period sections (9) are DC-free components, the wobble signal (22) is also a DC-free component, thereby ensuring the use of the positioning and focusing (4) unit (35). ) Optical _ accurate tracking of the beam. According to the first and second lb diagrams, each of the auxiliary data bits "〇,, and "i," are encoded in the wobble signal (22) using two pairs of half-period segments (21), in the indicated segment - The sequence of the signal period section (2G) and the second signal half period section (2)) is not _. To indicate the beginning of the auxiliary data frame using the sync symbol, the "Sync" shown in Figure lc, the sequence can be used, for example, it is significantly different from the auxiliary data bit T and "丨,, the phase . This is the beginning of the test, for example, when the data stream is first entered or after a data is purposefully or after an error has been skipped. In addition to a fixed length indicator segment, which is marked in the first, third, and fourth lines, the same number is used for all data elements, and the first signal period region (20) may be included in the wobble signal. (22) Medium. For the spectral behavior of the wobble signal (22), the form of the second 半 of the half-cycle segment (21) is decisively important. The signal shape shown in Figures 2a and 2b is particularly advantageous where the wobble signal (22) does not have (perceivable) non-continuous tilt changes and no discontinuous numerical changes. The second signal in this half-cycle section (21) may consist of three signal sections. In the spatial segments 〇Sx <1 and 2 . Τ〇Κχ<2 · T〇, the first signal is the same as the first signal, and in the spatial segment T<x<2. To-A, The two signals are different from the first signal. Here, the second signal has a cycle time different from the first signal and an amplitude. Figures 2a and 2b show two embodiments in which the first signal is a sine wave and the second signal is a fragmented sine or cosine wave, respectively. The second signal in the spatial segment 0 SX < T and 2.T〇- l < X < 2.T〇 is represented by Sa(x) and in the spatial segment T! SX < 2.T〇 The second signal is represented by sB(x), where X indicates the length of the channel on the central symmetry line of the servo track. Since the non-continuous tilt change is not (or cannot be perceived) in the wobble signal (22) and no (or undetectable) non-continuous value changes occur, the following mathematical equations are in the signal sA(x) to the signal sB(x) The transition is true (accurately or at least to some extent): (Τ1)=5ΐη(2πΤ]/Τ0) = sB {Τλ)=Α B ΜΙπ^-Τ^ΙΤβ) 21 201025310 d{Sin{2nxlTQ) } Ο〇5(2π(Τ0-χ)ΙΤΒ)\ dx dx Ά Here, TB indicates the cycle time sought and AB indicates the amplitude of sB(x). By substituting the equations, the periodic time TB is generated from the numerical solution of the equation: Ταη(2πX(Tq -T\)/TB) A Cos^2jrT\IT〇)

TB Τ08ίη(2πΤχ/Τ0) For amplitude AB, get: TB Cos{2kTx!T〇) Γ〇8ΐη(2πχ(Τ0-Τι)/ΤΒ) For the signal form in Figure 2a, the following parameters are used: Switching criticality: switching point sA(x) to sB(x): switching point sB(x) to sA(x): cycle time of sB(x): amplitude of Sb(X) · sa(T!)=0.85 Τα ^β=〇·1617Τ〇Tg_>i\=0.8383T〇Tb=2.2438T〇Αβ=1·456. For the signal form in Figure 2b, the following parameters are used: Switching Critical: Switching point sA(x) to sB(x): Switching point SB(X) to SA(X): Cycle time of sB(x): The amplitude of SB(X): sa(Ti)=0.5 Ta^b=〇-〇833Tc Tb_a=〇.9166Tc Tb=2.0247T〇Αβ=1·8234. Compared to prior art signal forms, the signal form according to Figures 2a and 2b has an important advantage in that it uses a smaller signal bandwidth in this embodiment of the invention and when a corresponding servo is fabricated When in orbit, 22 201025310 There is less demand for its swing generator and the quality of the reproduction that needs to be made. In the 2a and 2b diagrams, only the case where the second signal is positive is represented as an example. For the case of a negative waveform, the switching threshold Sa(Ti) and the amplitude Ab are likewise negative. Figures 5a, 5b and Figs. 6b show the spectrum of the wobble signal according to the prior art, for example, as described in U.S. Patent No. 5,995,952 and European Patent No. EP1066628. The spectrum in Figures 5a and 5b is determined by the length of the bit period of 4〇 periods T〇, which includes 8 periods τ〇 for encoding the respective auxiliary data bits and 32 2 sequences of the uncoded wobble signal. Cycle T〇. The spectrum in pictures 6a and 6b is determined by the length of the bit period of 8〇 period τ〇, which includes 8 periods τ〇 encoding the respective auxiliary data bits and 72 consecutive periods τ of the uncoded wobble signal. Hey. The distances of the five vertical network lines in the 5a, 5b and 6a, 6b diagrams correspond to the reciprocal of the cycle time τ 。 . Due to the significance of this vibration with a frequency of 1/TQ, the spectral line of the cycle time τ 〇 reciprocal is significant. Figures 7a, 7b and 8a, 8b show the spectrum of the unsmoothed wobble signal (22) in accordance with the present invention having a discontinuous tilt change in the transition from the first signal to the second signal at a fixed amplitude. The spectrum of the 7a, 7b graph is determined by the length of the bit period of 4〇 periods T〇 (which can be compared to the 5a, north map), which includes 9 periods TG (== for encoding the respective auxiliary data bits). The code length) and 31 cycles of the first signal in sequence. The spectrum of Fig. 8a, 8b is determined by the length of 8〇 period T〇 bits (corresponding to Fig. 6a, 61), which includes 9 periods T〇 for encoding the respective auxiliary data bits. (=code length) and 71 cycles τ0 of the first signal in sequence. 23 201025310 The improvement compared to the prior art (Figs. 5a, 5b and 6a, 6b) is perceptible, as in the spectrum (Figs. 7a, 7b and 8a, 8b), depending on the frequency. The amplitude drop can be obtained to |J. Presented in Figures 9a, 9b and 10a, b, the spectrum of the smooth wobble signal (22) according to the present invention and embodiments has an adaptive amplitude according to the embodiment shown in Figures 2 & 2b, and thus There are no discontinuous tilt changes. The spectrum in Figures 9a and 9b is determined by the length of the period τ〇 bits (which can be compared to the 5a, 5b diagrams). The period includes 9 periods TG for encoding the respective auxiliary data bits ( = code length) and 31 consecutive cycles of the first signal. The spectrum in the l〇a, 10b graph is determined by the length of 8 周期 〇 ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( T0 (= code length) and sequentially first, 71 cycles of the signal τ 〇. Improvements compared to the prior art (Figs. 5a, 5b and 6a, 6b) are clearly perceptible, for example, in the spectrum (Figs. 9a, 9b and 1a, 1%), depending on the frequency A significantly faster amplitude drop can be obtained. From the spectrum analysis, it can be seen that, especially the reference correction, _ and ® 10a, 10b's spectrum degradation according to frequency can be increased by increasing the length of the fixed code length Μ, that is, the county signal towel (10) Indicating a section in which the two vertical dotted lines are used as a boundary by adding a first signal period section (10) identical to the auxiliary data bit and the sync symbol - any number N in the first, the, and the Here M = 9 τ 〇). Therefore, since the overlap of the higher frequency section of the modulated wobble signal (22) with the lower frequency range section of the main data signal becomes even smaller on the main data signal to be recorded (main material 24 201025310 dent) The effect can be further reduced. In particular, it is possible to define a threshold such that the absolute value of the wobble signal (22) spectrum can be kept below the threshold by an appropriate selection number N. An embodiment of a decoder (37) for returning auxiliary data from the wobble signal (22) is shown in FIG. In the case of proper orbital guidance, the line of symmetry of the photodetector group (34) is exactly above the central symmetry line of the optical image of the servo track. In the case of proper orbital guidance, the main scanning beam (5) or the guiding scanning beam (6) bright portion on either side of the symmetry line in the center of the servo track is on average the same. The signals of the photodetector group (34) of the recording and/or playback device can be connected in such a manner that the difference in the bright portion on either side is roughly processed. If the tracking of the primary scanning beam (5) or the guiding scanning beam (6) is achieved by a time constant that is significantly greater than the cycle time τ, respectively, then the tracking cannot follow the orbital wobble. The wobble signal (22) results from the connection of the signal difference of the photodetector group (34). The wobble signal (22) is fed to a comparator circuit (5 〇) in which the logic value "1" is specified to a signal value above the coherent threshold and the logic value 〇 to those signal values below the threshold. In order to eliminate the zero crossing position due to the inevitable change of the recording medium tolerance and possibly affecting the zero crossing position of the wobble signal (22), the comparator threshold is reset by the low pass circuit (53). The signal (4〇) shown in Figure 4 is used for the sync symbol Sync (Fig. 4C), for the auxiliary data bit = ''〇' (pictured) and for the auxiliary data bits: "1" (#) "arrives to the output of the comparator circuit. Signal (40) and the use of voltage. Controls the binary generated by the oscillator (10) 25 201025310

The signal (41) reaches the edge control, the input of the measuring unit (9). The task of the time measuring unit (51) is to determine the time - the time measurement unit is determined at the individual edge of the signal and the positive edge of the letter )) The time between the positive edges, that is, the logical value "G" of the self-produced number _ is converted to the logical value "Γ, the positive edge, and the logical value at each negative edge, that is, from the ^ (40) "1,, convert to the logical value "〇". If the domain (4__edge "before the positive edge of the time scale is indicated" is then the time difference determined at the output of the time measuring unit (9) is output as a negative control voltage value proportional to this value. (4〇) The edge is in the case of the _ scale on the specified positive edge. The then determined time difference is output as a positive control value proportional to this value. (4) (10) Fresh or Week _, Separately by controlling the voltage to be 'stable for stability', the control voltage must be passed through the low pass filter (52) so that it corresponds as accurately as possible to the first occurrence in the periodic section (2〇) A signal period τ 〇〇 signal (40) usually has a cycle time τ 〇 and has a cycle time 2 Τ 0 only in the half cycle segment (9), which rarely occurs, and the time constant of the low pass (52) can be

The 'for example' is chosen such that the time constant is the time of the cycle time τ. The number of levels of magnitude. Therefore, the change in the cycle time in the signal (4()) of the semi-perimeter (21)_ does not affect the stability of the shaker signal (41) from the rotary unit (32) in which the recording medium (1) is used. The control signal can be derived using a rotational frequency control unit (36). The difference between the signal (40) and the oscillator signal (4) is calculated using a subtraction circuit (54), which can be implemented using a logically exclusive OR circuit. Available from subtractive power 26 201025310 :: the difference of the token for the auxiliary data signal '_ 4c map), auxiliary data bits = "〇 = "1 '' (Fig. 4b) each component has a brain and auxiliary (4) Bit 圃) The knives have obvious identifiable signal characteristics. The sync symbol "Syne," the signal characteristic_, the circuit (10) is caused to perform the binary target signal characteristic and the binary difference signal (42) characteristic at the time of being stored in the circuit (55). Correspondingly, the circuit 敝 output is generated. The reference parameter is used to detect the signal characteristic of the ""G, the circuit (56) is used, and the auxiliary data bit stored in the circuit (56) is implemented. = "〇" 2: 目 = 旒 characteristics and the discrete phase between the characteristics of the binary difference signal (42) = when the field has sufficient correspondence, the indication signal is generated at the output of the circuit (10). For the auxiliary data bit: "1,, the signal characteristic detection, the circuit (the use of the 'missing' between the binary target signal characteristics stored in the circuit (57), and the binary difference signal (10) characteristics Discrete correlation It «There are enough pairs of _ output money to be generated at the output of the circuit (9). The stepwise method of discrete correlation will use ^3a, i3b diagram, figure 15a, 15b and 16& 16b, 16c are illustrated. Displayed in the first item for use in auxiliary data bits = "0 , in Figure 14b, is not available for the auxiliary data bit = τ and is not shown in the ... image for the sync symbol difference signal (42), which is the number of samples from this signal The equidistance of the sequence form is discretized by the method of _ drawing. By k step, the discrete difference signal ^(10) code) is generated from the continuous difference signal 27 201025310 sDiff(x) where Nd is related to the first signal The number of samples in the periodic section (20). Then the discrete correlations of two different discrete difference signals SDiffl(nT()/Nd) and sDiff2(nT〇/Nd) SK〇rri, 2(kT〇/Nd) It is defined by the following correlation. SKorr\,2 (k 'Τ〇^ = Σ SDiff\((n),70/Td ) ' ((n ~ -?〇!Td ) n Therefore, the discrete difference signal SDifn( The discrete correlation between nT〇/Nd) and itself is determined by the following correlation: SK〇rr\(k'T0/Td) = ^ sDiff\((n)-T0/Td ) sDm((nk).T〇/T ^ Since the difference signal (42) only obtains a binary value, during the discrete correlation f, the multiplication operation can be performed in a simplified manner by a logical AND connection. Figure 13b shows the difference between the auxiliary data bits "〇" The characteristics of the discrete correlation between the signal and its body' Figure 14b shows the characteristics of the discrete correlation of the difference signal with the auxiliary data bit _ = "1" and its own, and the % diagram shows the difference signal for the synchronization symbol Discrete correlation with its own l5b signal (42) one of the first edges of the reference point, which is mainly used to decide which

characteristic. The discrete correlation value at zero' is indicated as the amount of difference for a helper data bit or whether a sync symbol is present. The following values of the discrete correlation at the zero point are clearly visible from the 13th, the Hb, and the 15th, and the auxiliary data bit is 13b. SK〇rr〇(〇)=2.4 Auxiliary data bit = "1 Figure 14b SKorrl (0) = 2.4 Synchronization symbol 15b ^ KorrSync (〇) =: 3 2 28 201025310 For the only - _ job, its value at the zero point _ difference signal and its own discrete correlation value must be If it is significantly larger than the discrete correlation value of the different difference signals, the t-shirt shows the difference signal for the auxiliary data bit = "〇" and for the auxiliary data bit = "! , the discrete correlation characteristic of the difference signal, (10) shows the discrete correlation characteristic of the difference signal for the auxiliary data bit = "0" and the difference signal for the synchronization symbol, and the 16c picture shows the auxiliary data The bit/丨,, the difference ❹4彳5 and the discrete correlation characteristic for the sync symbol difference signal. The following discrete correlation values at the zero point are apparent from the 16a, 16b, and 16c diagrams: Auxiliary data bits = "〇" Auxiliary data bits = "1" Figure 16a Figure ^ΚογγΟ,Ι (0 ) = 0.8 Auxiliary data bit = "〇" Auxiliary data bit" Synchronized symbol sync symbol 1615 Figure 16b SKorrO>Sy„c(〇)=0.8 SK〇rrl, Sync(〇)=〇.8 It can be observed that the discrete correlation values at the zero point (for the auxiliary data bit == "〇", for the auxiliary data bit = "1" and for the sync symbol) are significant with the discrete correlation value itself. The difference is greater than 2, and the difference of the discrete correlation values at the zero is significantly less than 1. Therefore, the discrete correlation procedure in circuit (55), circuit (56), and circuit (57) results in assistance Data bit = "0", for auxiliary data bit = "1" and uniquely detectable for sync symbols. If the difference signal (42) is affected by errors that may occur in the wobble signal (22) , then this unique detectability can still be provided. Even in the case of 29 201025310 , where shifting from zero to left or toward e is one or more steps T〇/Nd ' will result in a discrete correlation between the difference signal and its own discrete value in the graph of discrete correlation The ground is larger than the discrete correlation value of the difference signal in a sufficiently wide section. Figure 12 shows an embodiment of a manufacturing apparatus for fabricating a periodic section having a first signal on a motherboard (61) (20) And the servo track of the half cycle section (21) of the second signal.

A monochromatic source (68) 'which may comprise a laser' produces a wavelength beam (69) having a width corresponding to the width of the servo track. The radial position of the beam (69) can be shifted by an electro-optical modulator (66) which, in accordance with the control voltage generated by the signal generator (67), alternately moves around the line of symmetry of the beam (69) The center of the main board (61) is rotated or moved away from the center of rotation of the main board (61).

The control voltage characteristic at the output of the domain generator (67) corresponds to the characteristic of the pendulum signal (22), which will depend on the braided material signal depending on the invention utilized between the circumferential segments (10) of the first signal. The periodic segment (2) sequence of the second signal is encoded. Beam (7)), which is modulated by the modulator, and the movable lens (64) is moved by the spotlight f to move the focusing lens (64) using the positioning and focusing control unit (65 just coated on the motherboard table _ The tanning agent is exposed to utilize the spot (6) to produce the desired servo track geometry. The agent thickness should be the depth of the (four) depth that will be produced. The beam geometry is generated by the movable focusing lens (64). Make the special =::: = spot _ is approximately adjusted - during the exposure step, the 'focusing lens (64) and the main board (6)) are moved to the spot by the rotation (5) 30 201025310 兀 (62) in parallel (6〇) The focus plane, thus resulting in a servo track having a configuration of a spiral or concentric, circular structure or servo track. To account for a motherboard that may be uneven, the movable focusing lens (64) is continuously readjusted by the positioning and focus control unit (65) to produce a fixed spot. The photoresist exposure area is removed in a sequential etching process and the final board (61) is covered with a reflective coating. A large number of plastic embossing's are covered with one or more recording layers, which can be fabricated by electroforming and injection molding combined technical steps (61). Such techniques for making plastic data carriers having servo tracks are well known to those skilled in the art, but, further, are not the subject of the present invention. Although the invention has been described using the embodiments, the invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS The first, lb, and lc diagrams represent an embodiment of a wobble signal including the encoding of binary auxiliary data bits (la, (9) and auxiliary data sync symbols (lc). 2a and 2b The figures respectively represent an embodiment of a smooth wobble signal having a small or negligible tilt step. Figure 3 represents a method for recording and/or playing information in accordance with the present invention using a recording medium in accordance with the present invention. Embodiments. Figures 4a, 4b, and 4c represent an embodiment of a signal for a decoder (37) of an auxiliary data signal. Figures 5a and 5b represent four cycles of τ according to the prior art. The pattern of the auxiliary data bit spectrum in which the bit length is encoded. 31 201025310 Figures 6a and 6b represent diagrams of the auxiliary data bit spectrum encoded according to the prior art with a bit length of 8 cycles. 7a and 7b are diagrams showing the spectrum of the auxiliary data bit spectrum in which the wobble signal (2 2) of the wobble signal (2 2) is not smoothed (with a tilt step) in accordance with an embodiment of the present invention. Figures 8a and 8b represent the basis In the first embodiment, the pattern of the auxiliary data bit spectrum in which the wobble signal (22) of the wobble signal (22) is not smoothed (with a tilt step) is 8 〇 。 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第In one embodiment, the pattern of the auxiliary data bit spectrum encoded by the wobble signal (22) of the smoothing (no tilt step) of the 〇 参 参 长度 。 。 。 。 。 。 。 。 第 第 第 第 第 第 第 第 第 第 第 第In accordance with an embodiment of the present invention, a pattern of auxiliary data bit spectra encoded by a smoothing (no tilt step) wobble signal (22) of 8 〇 period τ 〇 bit length is shown. Figure 11 represents an auxiliary data signal. A diagram of an embodiment of a decoder (37). Fig. 12 is a view showing an embodiment of an apparatus for manufacturing a main board (61) which can be used as a replica of a recording medium (1) according to the present invention. Figures 13a and 13b represent discrete correlations with the auxiliary data bits = "〇,, the difference signal (42) (13a) and the difference 1:1⁄2 and its own (13_图. 14a and 14b) The graph represents the difference signal (42) (14a) for the auxiliary data bit and the difference signal with itself The pattern of discrete correlation (14b). Figures 15a and 15b represent the difference signal (42) (15a) for the sync symbol and the discrete correlation (i5b) of the signal with itself. He, 16b and 16c represent the discrete correlation (16a) of the difference signal for the auxiliary data bit = "〇" and the auxiliary 32 201025310 auxiliary data bit = "1", for the auxiliary data bit = "0" and synchronization Discrete correlation of the difference signal of the symbol (16b), and the pattern of the discrete correlation (16c) of the difference signal of the auxiliary data bit = "1" and the sync symbol. [Description of main component symbols]

1...recording medium 5···main scanning beam 6···direction scanning beam 20...first signal period section 21...second signal half-period section 22...wobble signal 30...optical unit 32...rotating unit 33 ...light control unit 34...photodetector 35...position and focus control unit 36...rotation frequency control unit 37,38...decoder 39...central control unit 40...comparator circuit post signal 41...oscillator signal 42··· Quantity signal 50... Comparator circuit 51... Edge control time measuring unit 52, 53... Low pass 54... Subtraction circuit 55... Detection circuit 56... Detection circuit 57... Detection circuit 58... Voltage-controlled oscillator 60... Spot 61... Main board 62... Main board rotating unit 63... Rotation frequency control unit 64... Removable focusing lens 65... Position and focus control unit 66... Electro-optical modulator 67... Signal generator 68... Monochromatic light source 69... Beam 70... Modulated beam 33

Claims (1)

201025310 VII. Patent application scope: 1. A recording medium having a servo track or a servo track configuration, which is suitable for guiding a scanning beam or a plurality of scanning beams of an information recording and/or playback device, and Provided at least in sections for the formation, representation or storage of primary data, the servo track or the servo track arrangement comprising, at least in sections, a wobble signal characterized by comprising a first signal having a period of time τ〇 And a half cycle segment of the second signal, the half cycle segment of the second signal being between the periodic segments of the first signal. 2. The recording medium of claim 1, wherein the half-cycle segments of the second signal between the periodic segments of the first signal occur at least partially in pairs. 3. The recording medium according to any one of the preceding claims, wherein the cycle time of the second signal is twice the predetermined cycle time T〇 of the first signal. 4. The recording medium according to any one of the preceding claims, wherein the semi-period segment sequence of the second signal occurring in pairs is one by a different sequence of the periodic segments and the semi-periodic segments The binary value ("0" or "1") of the auxiliary data signal is encoded. 5. The recording medium according to any one of the preceding claims, wherein in the half cycle segment sequence for the auxiliary data signal binary value "0" and the binary value "1" for the auxiliary data signal The number of half-cycle segments of the second signal in the sequence of half-cycle segments is the same. 6. The recording medium according to any one of the preceding claims, wherein the auxiliary 201025310 is less than a smoke symbol, and the second is in a sequence of semi-period segments of the auxiliary symbol for the auxiliary symbol. The half of the signal is different from the half cycle of the semi-period segment sequence for the auxiliary material signal and the semi-period segment sequence for the auxiliary data: the county value of "1," The number of segments. The recording medium according to the term of the patent of the first month of the patent, wherein at least the synchronization signal 之 semi-period segment sequence 2 and the binary value "〇" for the auxiliary data signal The half-period zone, 歹J, and the binary-numbered "r, half-cycle" region & sequence of the auxiliary data signal, each starting with a half-cycle segment of the second signal, according to the previously claimed patent range a recording medium of any of the items, wherein the first signal amplitude in the lead period is compared, and the second signal amplitude is reduced in the half period n so that the wobble signal is generated ' &Amp; have not perceived or discontinuous change in inclination and / or can not be perceived or not a discontinuous value changes. A recording medium according to any one of the preceding claims, wherein a $first signal in the periodic region is a DC-free component and a half-cycle segment in which the first nickname occurs in pairs is configured. The integration result of the second signal on the pair of half-cycle segments is made zero. 10. A recording medium according to any one of the patent application scopes of the prior il, which is characterized in that the length of the bit is made by selecting an arbitrary number of 信号-signal period segments which are added to one of the cycle times τ0 of the Μ length unit. The parameter length is changed by 1 to 35 201025310, and the number N is equal to the auxiliary data bit and the synchronization symbol in such a manner that the absolute value of the spectrum of the wobble signal is at least - the frequency becomes lower than - previously defined The critical value. The recording medium of the item of the patent scope is characterized in that the first signal is a sinusoidal or cosine curve in the period segment and the second signal is a segment a sinusoidal or cosine record of the form, the second signal in the section where the Weilong kernel is at the -thin threshold is the same as the first signal, and has; the absolute value is higher than a predetermined threshold The amplitude of the second number in those sections and the period _ are different from the first signal = the cycle time is selected such that there is no undulation change in the sway signal and no discontinuous value change occurs. 12. Recording according to the scope of the previous patent application - The assistance to the periodic segment and the semi-periodic segment sequence = refers to the application data and / or control data and / or safety data. A. 13. Used to make a record. The media of the second to the twelfth items of the second to the twelfth items are used to record the two defective elements by the writing of the light beam. The device is characterized in that the optical element contains = the main board becomes One of the beam modulators and the modulator generates a control corresponding to the -swing signal by means of a modulation generator; the = swing signal comprises a period segment having a period -1 to 唬 and a second signal The half-period section of the eighth period of the half period of the number, the second period of time ^ is between the period sections of the first signal. 36 201025310 14. The manufacturing apparatus according to claim 13 of the patent application, wherein the wobble signal is generated in accordance with one of the features of any one of claims 2 to 12. 15. A method for manufacturing a recording medium, in particular a recording medium according to any one of claims 1 to 11, wherein a servo track is recorded on a main board by a writing beam The upper element, the method is characterized in that the optical element comprises a modulator for generating a modulated beam and the modulator is controlled by a signal generator, the signal generator generating a control signal according to a wobble signal The wobble signal includes a periodic segment having a first signal of one cycle time T〇 and a half cycle segment of a second signal, and the half cycle segment of the second signal is in a periodic region of the first signal Between segments. 16. The manufacturing method according to claim 15 of the patent application, wherein a wobble signal is generated according to one of the features of any one of claims 2 to 12. 17. Apparatus for recording and/or playing information separately on a recording medium or from a recording medium, in particular a recording medium according to any one of claims 1 to 11 An optical component for recording a primary data dent in a servo track and/or for playing a master data from the servo track, the device having a characteristic that the servo track includes a wobble signal from which a group detector is derived The wobble signal includes a periodic segment having a first signal of one cycle time T 以及 and a half cycle segment of a second signal, and the half cycle segment of the second signal is in a periodic region of the first signal Between segments. 37 201025310 18. Apparatus for recording and/or broadcasting information according to claim 17 of the scope of the patent application, wherein the wobble signal has the characteristics according to any one of claims 2 to 12 of the patent application. 19. Apparatus for recording and/or playing information according to any one of clauses 17 or 18, wherein the wobble signal is fed to a decoder for decoding the auxiliary data signal, the decoder Designed to generate a rotational frequency for a rotating unit for the information recording and/or playback device by providing an oscillator signal derived from the wobble signal by a comparator circuit and an edge control time measuring unit control signal. 20. The apparatus for recording and/or playing information according to claim 19, wherein the decoder comprises a subtraction circuit for forming a difference signal, the difference signal generating the comparator output signal and the The difference between the oscillator signals to generate a sync symbol, an auxiliary data bit = "by a discrete correlation of the difference signal for the sync symbol, the auxiliary data bit, and the auxiliary data bit = "1" = " 〇” and auxiliary data bit = “1”. 21. A method for separately recording and/or playing information on a recording medium or from a recording medium, in particular a recording medium according to any one of claims 1 to 11 The main data dent is recorded in a servo track and/or an optical component of the master data is played from the servo track, the method being characterized by using a device comprising a wobble signal from which a group detector is derived, the wobble signal a period segment including a first signal having a cycle time T〇 and a half cycle segment of a second 201025310 signal, the half cycle segment of the second signal being between the cycle segments of the first signal . 22. A method for recording and/or playing information with a wobble signal according to one of the features of any one of claims 2 to 12. 23. A method of recording and/or playing information according to any one of claims 21 or 22, wherein the wobble signal is fed to a decoder for decoding the auxiliary material signal, the decoder being designed Generating a rotational frequency control signal for a rotating unit for the information recording and/or playback apparatus by providing an oscillating signal derived from the wobble signal by a comparator circuit and an edge control time measuring unit . 24. A method for recording and/or playing information according to claim 23, wherein the decoder includes a subtraction circuit for forming a difference signal, wherein the difference signal produces the comparator output signal and The difference between the oscillator signals to generate a sync symbol, assist by relying on the discrete correlation of the difference signal for the sync symbol, the auxiliary data bit = "0", and the auxiliary data bit = "1" Data bit = "0" and auxiliary data bit = "1". 39