KR100406629B1 - Method for calculating a track pitch on writable medium - Google Patents

Method for calculating a track pitch on writable medium Download PDF

Info

Publication number
KR100406629B1
KR100406629B1 KR10-2001-0006319A KR20010006319A KR100406629B1 KR 100406629 B1 KR100406629 B1 KR 100406629B1 KR 20010006319 A KR20010006319 A KR 20010006319A KR 100406629 B1 KR100406629 B1 KR 100406629B1
Authority
KR
South Korea
Prior art keywords
track
disc
calculating
pitch
lead
Prior art date
Application number
KR10-2001-0006319A
Other languages
Korean (ko)
Other versions
KR20020066096A (en
Inventor
김태수
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR10-2001-0006319A priority Critical patent/KR100406629B1/en
Publication of KR20020066096A publication Critical patent/KR20020066096A/en
Application granted granted Critical
Publication of KR100406629B1 publication Critical patent/KR100406629B1/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B2007/00709—Dimensions of grooves or tracks, e.g. groove depth, track pitch
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/122—Burst cutting area [BCA]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1229—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc lead-in area
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1231—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc lead-out area
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G11B2020/1267—Address data
    • G11B2020/1269—Absolute time in pregroove [ATIP] information

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

본 발명은, 기록 가능 매체의 트랙 피치 연산방법에 관한 것으로, 디스크의 선속도와, 디스크의 리드아웃 영역 시작위치까지의 절대시간정보(ATIP)를 각각 산출 및 승산하여, 트랙의 전체 길이를 연산한 후, 그 트랙의 전체 길이에 근거하여, 트랙의 피치를 연산함으로써, 트랙 점프 동작 없이도, CD-R 또는 CD-RW 등과 같은 기록 가능 매체의 트랙 피치를 간단하고 신속하게 연산할 수 있게 되는 매우 유용한 발명인 것이다.The present invention relates to a track pitch calculation method of a recordable medium, and calculates and multiplies the linear speed of a disc and absolute time information (ATIP) up to the start position of the lead-out area of the disc, respectively, to calculate the total length of the track. Then, by calculating the pitch of the track based on the total length of the track, it is possible to calculate the track pitch of a recordable medium such as a CD-R or a CD-RW, simply and quickly, without a track jump operation. It is a useful invention.

Description

기록 가능 매체의 트랙 피치 연산방법 {Method for calculating a track pitch on writable medium}Method for calculating a track pitch on a recordable medium {Method for calculating a track pitch on writable medium}

본 발명은, 기록 가능 매체의 트랙 피치 연산방법에 관한 것으로, 더욱 상세하게는 CD-R(CD-Recordable) 또는 CD-RW(CD-Rewritable) 등과 같은 기록 가능 매체의 트랙 피치(Track Pitch)를, 트랙 점프 동작 없이도 신속하게 연산할 수 있도록 하기 위한 기록 가능 매체의 트랙 피치 연산방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for calculating a track pitch of a recordable medium. More specifically, the present invention relates to a track pitch of a recordable medium such as CD-R (CD-Recordable) or CD-RW (CD-Rewritable). The present invention relates to a track pitch calculation method of a recordable medium for quickly calculating without a track jump operation.

최근에는 디지털 데이터를 독출 재생할 수 있는 기록매체, 예를 들어 재생용 씨디(CD: Compact Disc) 이외에도, 외부 입력 데이터를 기록 저장할 수 있는 기록 가능한 씨디, 즉 CD-R 또는 CD-RW 등과 같은 기록 가능 매체들이 상용화되어 널리 사용되고 있다.Recently, in addition to a recording medium capable of reading and reproducing digital data, for example, a compact disc (CD), a recordable CD capable of recording and storing external input data, such as a CD-R or CD-RW, can be recorded. The media have been commercialized and widely used.

한편, 상기와 같은 CD-R 또는 CD-RW 로부터 데이터를 독출 재생하거나, 또는 외부 입력 데이터를 기록하는 광디스크 장치에서는, 정확한 데이터의 독출 또는 기록동작이 수행되도록 하기 위하여, 광디스크 장치 내에 구비된 광픽업을 임의의 기록위치로 이동시키는 서보동작이 반드시 필요하게 되는 데, 상기 서보동작은, 상기 CD-R 또는 CD-RW의 트랙 피치에 따라 가변 제어된다.On the other hand, in the optical disc apparatus that reads and reproduces data from the above CD-R or CD-RW, or records external input data, an optical pickup provided in the optical disc apparatus in order to perform an accurate read or write operation of data. A servo operation for moving the data to an arbitrary recording position is necessary. The servo operation is variably controlled in accordance with the track pitch of the CD-R or CD-RW.

예를 들어, 사용자가 재생 요청한 특정 기록위치로 트랙 점프하고자 하는 경우, 광디스크 장치에 구비된 광픽업을, 해당 기록위치로 수평 이동시켜야만 하는 데, 이때 광픽업의 이동 량은, 기록 가능 매체의 트랙 피치에 따라 서로 다르게 산출되므로, 정확한 트랙점프 동작이 이루어지도록 하기 위해서는, 사전에 기록 가능 매체의 트랙 피치 연산이 정밀하게 이루어져야만 한다.For example, if the user wants to track jump to a specific recording position requested for playback, the optical pickup provided in the optical disc apparatus should be moved horizontally to the corresponding recording position, where the movement amount of the optical pickup is determined by the track of the recordable medium. Since it is calculated differently according to the pitch, in order to achieve accurate track jumping operation, the track pitch calculation of the recordable medium must be precisely performed in advance.

그러나, 일반적인 광디스크 장치에서는, 장치 내에 삽입 안착된 기록 가능 매체의 트랙 피치를 연산하기 위하여, 상기 광픽업을 소정거리 만큼 수평 이동시키는 트랙 점프동작을 일정회수 반복 수행한 후, 그에 따라 실제로 이동된 트랙 횡단 수를 검출하여, 트랙 피치를 연산하는 일련의 동작을 수행하게 되므로, 기록 가능 매체의 트랙 피치를 연산하는 데 장시간이 소요되는 문제점이 있었다.However, in the general optical disc apparatus, in order to calculate the track pitch of the recordable medium inserted and seated in the apparatus, the track jump operation for horizontally moving the optical pickup by a predetermined distance is repeatedly performed a predetermined number of times, and then the track actually moved accordingly. Since a series of operations for calculating the track pitch are performed by detecting the number of traverses, there is a problem that it takes a long time to calculate the track pitch of the recordable medium.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 창작된 것으로서, CD-R 또는 CD-RW 등과 같은 기록 가능 매체의 초기 구동시, 선속도(Linear Velocity)와 절대시간정보(ATIP: Absolute Time In Pregroove)에 근거하여, 기록 가능 매체의 트랙 피치를 트랙 점프 동작 없이도, 간단하고 정확하게 연산할 수 있는 기록 가능 매체의 트랙 피치 연산방법을 제공하는 데, 그 목적이 있는 것이다.Accordingly, the present invention was created to solve the above problems, and when the initial drive of a recordable medium such as a CD-R or CD-RW, the linear velocity and absolute time information (ATIP: Absolute Time In) SUMMARY OF THE INVENTION An object of the present invention is to provide a track pitch calculation method for a recordable medium that can calculate the track pitch of the recordable medium simply and accurately without a track jump operation.

도 1은 본 발명에 따른 기록 가능 매체의 트랙 피치 연산방법이 적용되는 광디스크 장치에 대한 구성을 도시한 것이고,1 shows a configuration of an optical disk apparatus to which a track pitch calculation method of a recordable medium according to the present invention is applied;

도 2는 본 발명이 적용되는 기록 가능 매체의 기록 포맷 및 그에 따른 절대시간정보(ATIP)를 도시한 것이고,2 shows a recording format of a recordable medium and absolute time information (ATIP) according to the present invention,

도 3 및 도 4는 본 발명이 적용되는 기록 가능 매체의 리드인(Lead-In) 영역에 기록된 제3 스페셜 정보를 도시한 것이고,3 and 4 show third special information recorded in a lead-in area of a recordable medium to which the present invention is applied;

도 5는 본 발명에 따른 기록 가능 매체의 트랙 피치 연산방법에 대한 동작 흐름도를 도시한 것이다.5 is a flowchart illustrating an operation of a track pitch calculation method of a recordable medium according to the present invention.

※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing

10 : 모터 구동부 11 : 광디스크10: motor drive unit 11: optical disk

12 : 광픽업 13 : 메모리12: optical pickup 13: memory

14 : 재생신호처리부 15 : 서보부14: playback signal processing unit 15: servo unit

16 : 제어부 17 : 기록신호처리부16 control unit 17 recording signal processing unit

상기와 같은 목적을 달성하기 위한 본 발명에 따른 기록 가능 매체의 트랙 피치 연산방법은, 디스크의 선속도를 산출하는 1단계; 상기 디스크의 리드아웃 영역 시작위치까지의 절대시간정보를 검출하는 2단계; 상기 선속도와 절대시간정보를승산하여, 트랙의 전체길이를 산출하는 3단계; 및 상기 트랙의 전체길이에 근거하여, 상기 트랙의 피치를 연산하는 4단계를 포함하여 이루어지는 것을 특징으로 한다.A track pitch calculation method for a recordable medium according to the present invention for achieving the above object comprises the steps of: calculating a linear velocity of a disc; Detecting absolute time information up to a start position of the lead-out area of the disc; Calculating a total length of a track by multiplying the linear velocity and absolute time information; And calculating a pitch of the track based on the total length of the track.

이하, 본 발명에 따른 기록 가능 매체의 트랙 피치 연산방법에 대한 바람직한 실시예에 대해 첨부된 도면에 의거하여 상세히 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the preferred embodiment of the track pitch calculation method of the recordable medium which concerns on this invention is described in detail based on attached drawing.

우선, 도 1은 본 발명에 따른 기록 가능 매체의 트랙 피치 연산방법이 적용되는 광디스크 장치에 대한 구성을 개략적으로 도시한 것으로, 상기 광디스크 장치에서는, 기록 가능 매체, 예를 들어 재기록 가능 씨디(CD-RW)(11)에 기록된 데이터를 독출하는 광픽업(12); 상기 광픽업에 의해 독출되는 신호를 재생 신호처리하는 재생신호처리부(14); 외부 입력신호를 기록에 적합한 신호로 변환 및 신호처리하는 기록신호처리부(17); 상기 재기록 가능 씨디(11)에 기록된 데이터를 독출 또는 기록하기 위한 서보 동작을 제어하는 서보부(15)와 모터 구동부(10); 상기 구성수단들의 동작을 제어하는 제어부(16); 및 상기 제어부의 동작 제어에 필요한 데이터를 저장하는 메모리(13)가 포함 구성될 수 있다.First, FIG. 1 schematically shows a configuration of an optical disc apparatus to which the track pitch calculation method of a recordable medium according to the present invention is applied. In the optical disc apparatus, a recordable medium, for example, a rewritable CD (CD-), is shown. An optical pickup 12 for reading out data recorded in the RW) 11; A reproduction signal processing unit (14) for reproducing signal processing the signal read out by the optical pickup; A recording signal processor 17 for converting and signal processing an external input signal into a signal suitable for recording; A servo unit 15 and a motor driver 10 for controlling a servo operation for reading or writing data recorded on the rewritable CD 11; A controller 16 for controlling the operation of the constituent means; And a memory 13 for storing data necessary for controlling the operation of the controller.

한편, 상기와 같이 구성되는 광디스크 장치에서는, 재기록 가능 씨디(11)가 삽입 안착된 상태에서, 디스크 초기 구동시, 선속도(V)와 절대시간정보(ATIP)에 근거하여, 재기록 가능 씨디의 트랙 전체 길이(L)를 연산한 후, 그 트랙 전체 길이를 기준으로 하여 재기록 가능 씨디의 트랙 피치를 연산하게 되는 데, 상기 동작에 대해 상세히 설명하면 다음과 같다.On the other hand, in the optical disk device configured as described above, the track of the rewritable CD is based on the linear velocity V and the absolute time information ATIP during the initial drive of the disc with the rewritable CD 11 inserted and seated. After calculating the total length L, the track pitch of the rewritable CD is calculated based on the track total length. The above operation will be described in detail.

먼저, 도 2는 본 발명이 적용되는 기록 가능 매체의 기록 포맷 및 그에 따른 절대시간정보를 도시한 것으로, 예를 들어, 상기 재기록 가능 씨디(11)는, 디스크의 내주에서 외주 방향으로, 피씨에이(PCA: Power Calibration Area) 영역, 피엠에이(PMA: Program Memory Area) 영역, 리드인(LIA: Lead-In Area) 영역, 그리고 프로그램 영역(Program Area)으로 구분 할당되며, 상기 프로그램 영역 이후에는 물리적인 리드아웃 영역이 구분 할당된다.First, FIG. 2 shows a recording format of a recordable medium and absolute time information according to the present invention. For example, the rewritable CD 11 may be located in the circumferential direction of the disc in the circumferential direction. A power calibration area (PCA) area, a program memory area (PMA) area, a lead-in area (LIA) area, and a program area may be allocated. The in lead-out area is separately allocated.

한편, 상기 PCA 영역은, 광픽업(12)에 포함 구성되는 발광소자의 광 파워(Optical Power)를 조절하기 위한 정보가 기록되는 영역이고, 상기 PMA 영역은, 상기 프로그램 영역에 구획 기록되는 논리 트랙들에 대한 관리정보들이 기록되는 영역이다.On the other hand, the PCA area is an area in which information for adjusting the optical power of the light emitting element included in the optical pickup 12 is recorded, and the PMA area is a logical track partitioned and recorded in the program area. This is an area where management information about the fields is recorded.

그리고, 상기 리드인 영역은, 물리적으로 구분 할당되어, 디스크 외주 방향으로 점차 증가하는 절대시간정보, 특히 도 3에 도시한 바와 같이, 다수의 스페셜 정보들(Special Information 1,2,3)과 일반 시간코드들(Normal Timecode)이 포함 기록되는 데, 상기 리드인 영역에서의 N+20 번째 프레임에 기록되는 제3 스페셜 정보는, 도 4에 도시한 바와 같이, 분(Minutes), 초(Seconds), 프레임(Frames)을 나타내는 총 3 바이트의 절대시간정보로서, 상기 프로그램 영역의 최종 기록위치, 즉 물리적으로 구분 할당되는 리드아웃 영역의 시작위치에 대응되는 절대시간정보가 기록된다.In addition, the lead-in area is physically divided and allocated with absolute time information gradually increasing in the circumferential direction of the disc, in particular, as shown in FIG. 3, a plurality of special information (Special Information 1,2,3) and general information. Normal timecodes are recorded including the third special information recorded in the N + 20th frame in the lead-in area, as shown in FIG. 4. Minutes and seconds are shown in FIG. 4. As absolute time information of a total of three bytes representing frames, absolute time information corresponding to the last recording position of the program area, that is, the start position of the lead-out area that is physically divided and allocated, is recorded.

예를 들어, 상기 제3 스페셜 정보의 3 바이트 값이 '0111 0000, 0100 0101,0001 0101'인 경우, 물리적으로 구분 할당되는 리드아웃 영역의 시작위치에 대응되는 절대시간정보는, '70:45:15' 즉 70분 45초 15프레임이 되는 것이다.For example, when the 3-byte value of the third special information is' 0111 0000, 0100 0101,0001 0101 ', the absolute time information corresponding to the start position of the lead-out area that is physically allocated is '70: 45'. : 15 'That is, 70 minutes 45 seconds 15 frames.

따라서, 상기 광디스크 장치에서의 제어부(16)는, 도 5에 도시한 바와 같이, 재기록 가능 씨디(11)가 장치 내에 삽입 안착되는 경우(S10), 상기 서보부(15)와 모터 구동부(10)를 동작 제어하여, 상기 재기록 가능 씨디(11)를 일정속도로 회전시키는 디스크 초기 구동동작을 수행시키는 한편, 재기록 가능 씨디의 선속도(V)를 산출하게 된다(S11).Therefore, as shown in FIG. 5, when the rewritable CD 11 is inserted and seated in the apparatus (S10), the control unit 16 of the optical disc apparatus 10 includes the servo unit 15 and the motor driving unit 10. By controlling the operation, the initial drive operation of the disk for rotating the rewritable CD 11 at a constant speed is performed, and the linear velocity V of the rewritable CD is calculated (S11).

상기 선속도는, 상기 모터 구동부(10)로부터 출력되는 FG 신호, 즉 재기록 가능 씨디(11)를 회전시키는 스핀들(Spindle) 모터가 1 회전함에 따라 발생되는 소정 개수의 FG 신호, 예를 들어 18 개의 FG 신호를 카운트하여 획득된 시간정보(t)에 근거하여, 각속도(ω= 2 x π x (1/t))를 산출하고, 상기 산출된 각속도(ω)를, 디스크 초기 구동시 억세스되는 내주 기록위치에 대응되는 디스크 반경(r), 예를 들어, 2.5cm로 제산하여 산출하게 된다.The linear velocity is a predetermined number of FG signals generated by one rotation of an FG signal output from the motor driver 10, that is, a spindle motor for rotating the rewritable CD 11, for example, 18 pieces. Based on the time information t obtained by counting the FG signals, an angular velocity ω = 2 x π x (1 / t) is calculated, and the calculated angular velocity ω is the inner circumference that is accessed during initial drive of the disc. The disk radius r corresponding to the recording position is calculated by dividing, for example, 2.5 cm.

이후, 전술한 바와 같이, 재기록 가능 씨디(11)의 리드인(LIA) 영역에 기록된 제3 스페셜 정보를 독출하게 되고(S12), 상기 독출된 제3 스페셜 정보로부터, 리드아웃 영역의 시작위치에 대응되는 절대시간정보(T)를 산출하게 된다(S13).Thereafter, as described above, the third special information recorded in the lead-in area LIA of the rewritable CD 11 is read (S12), and the start position of the lead-out area is read from the read third special information. Absolute time information T corresponding to is calculated (S13).

그리고, 상기와 같은 과정을 통해 각각 산출된 선속도(V)와 절대시간정보(T)를 승산하여 디스크의 트랙 전체 길이(L= V x T)를 연산하게 되고(S14), 상기 연산된 디스크의 트랙 전체 길이(L)를 기준으로 디스크의 트랙 피치(P)를 연산하게 되는 데(S15), 상기 트랙 피치의 연산은, 디스크의 직경이 고정되어 있기 때문에, 사전에 기준값으로 설정된 디스크의 트랙 전체 길이(L_ref)와 트랙 피치(P_ref)를 이용한 비례식을 기준으로 간단하게 연산할 수 있게 된다.Then, the total track length L of the disk (L = V x T) is calculated by multiplying the linear velocity V and the absolute time information T calculated through the above process (S14). The track pitch P of the disc is calculated on the basis of the total track length L of the track (S15). In the calculation of the track pitch, since the diameter of the disc is fixed, the track of the disc previously set as the reference value is calculated. A simple calculation can be performed based on a proportional expression using the total length L_ref and the track pitch P_ref.

즉, 간단한 비례식 "L : P = L_ref : P_ref"을 이용하여, 상기 디스크의 트랙 피치(P)를 연산할 수 있게 되는 것이다.That is, the track pitch P of the disc can be calculated using the simple proportional expression "L: P = L_ref: P_ref".

참고로, 광디스크 장치 내에, 트랙 전체 길이별 트랙 피치를 테이블 형태로 설정 및 저장하고, 상기와 같은 동작을 통해 연산되는 트랙 전체 길이에 대응되는 임의의 한 트랙 피치를 독출 사용할 수도 있다.For reference, the track pitch for each track length may be set and stored in the form of a table in the optical disk device, and any one track pitch corresponding to the track length calculated through the above operation may be read out.

이상, 전술한 본 발명의 바람직한 실시예는, 예시의 목적을 위해 개시된 것으로, 당업자라면 이하 첨부된 특허청구범위에 개시된 본 발명의 기술적 사상과 그 기술적 범위 내에서, 다양한 다른 실시예들을 개량, 변경, 대체 또는 부가 등이 가능할 것이다.As mentioned above, preferred embodiments of the present invention are disclosed for the purpose of illustration, and those skilled in the art can improve and change various other embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. , Replacement or addition would be possible.

상기와 같이 이루어지는 본 발명에 따른 기록 가능 매체의 트랙 피치 연산방법은, 디스크의 선속도와, 디스크의 리드아웃 영역 시작위치까지의 절대시간정보를 각각 산출 및 승산하여, 트랙의 전체 길이를 연산한 후, 그 트랙의 전체 길이에 근거하여, 트랙의 피치를 연산함으로써, 트랙 점프 동작 없이도, CD-R 또는 CD-RW 등과 같은 기록 가능 매체의 트랙 피치를 간단하고 신속하게 연산할 수 있게 되는 매우 유용한 발명인 것이다.The track pitch calculation method for a recordable medium according to the present invention as described above calculates and multiplies the linear speed of the disc and the absolute time information up to the start position of the lead-out area of the disc to calculate the total length of the track. Then, by calculating the pitch of the track based on the total length of the track, it is very useful that the track pitch of a recordable medium such as a CD-R or CD-RW can be calculated simply and quickly without a track jump operation. It is an invention.

Claims (6)

디스크의 선속도를 산출하는 1단계;Calculating a linear velocity of the disk; 상기 디스크의 고정된 반경 길이를 가지는 위치의 절대시간정보를, 디스크 관리정보로부터 검출하는 2단계;Detecting absolute time information of a position having a fixed radius length of the disc from disc management information; 상기 선속도와 절대시간정보에 근거하여, 트랙 길이를 산출하는 3단계; 및Calculating a track length based on the linear velocity and absolute time information; And 상기 트랙의 길이에 근거하여, 상기 트랙의 피치를 연산하는 4단계를 포함하여 이루어지는 것을 특징으로 하는 기록 가능 매체의 트랙 피치 연산방법.And calculating a pitch of the track based on the length of the track. 제 1항에 있어서,The method of claim 1, 상기 선속도는, 디스크 초기 구동시 억세스되는 내주 기록위치에 대응되는 직경과, 현재 기록위치에서의 각속도에 근거하여 산출되는 것을 특징으로 하는 기록 가능 매체의 트랙 피치 연산방법.And the linear velocity is calculated based on a diameter corresponding to the inner circumferential recording position accessed during initial drive of the disc and the angular velocity at the current recording position. 제 2항에 있어서,The method of claim 2, 상기 각속도는, 디스크를 회전시키는 스핀들 모터의 회전에 따라 발생 출력되는 FG 신호의 개수를 카운트하여 획득된 시간정보에 근거하여 산출되는 것을 특징으로 하는 기록 가능 매체의 트랙 피치 연산방법.And the angular velocity is calculated based on time information obtained by counting the number of FG signals generated by the rotation of the spindle motor for rotating the disk. 제 1항에 있어서,The method of claim 1, 상기 고정된 반경길이를 가지는 위치는, 피씨에이(PCA), 피엠에이(PMA), 리드인 또는 리드아웃 시작 위치 중 어느 하나인 것을 특징으로 하는 기록 가능 매체의 트랙 피치 연산방법.The position having the fixed radial length is any one of PCA, PMA, lead-in or lead-out start position. 제 1항에 있어서,The method of claim 1, 상기 트랙 피치는, 사전에 기준값으로 설정된 디스크 트랙의 전체 길이(L_ref)와 트랙 피치(P_ref)를 이용한 비례식에 의해 연산되는 것을 특징으로 하는 기록 가능 매체의 트랙 피치 연산방법.And the track pitch is calculated by a proportional expression using the total length (L_ref) and the track pitch (P_ref) of a disc track previously set as a reference value. 제 4항에 있어서,The method of claim 4, wherein 상기 디스크 관리정보는, 상기 리드인 영역에 기록된 제3 스페셜 정보이고, 상기 리드아웃 영역 시작위치까지의 절대시간정보는, 상기 제3 스페셜 정보에 의해 검출되는 것을 특징으로 하는 기록 가능 매체의 트랙 피치 연산방법.The disc management information is third special information recorded in the lead-in area, and absolute time information up to the start position of the lead-out area is detected by the third special information. Pitch calculation method.
KR10-2001-0006319A 2001-02-09 2001-02-09 Method for calculating a track pitch on writable medium KR100406629B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR10-2001-0006319A KR100406629B1 (en) 2001-02-09 2001-02-09 Method for calculating a track pitch on writable medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2001-0006319A KR100406629B1 (en) 2001-02-09 2001-02-09 Method for calculating a track pitch on writable medium

Publications (2)

Publication Number Publication Date
KR20020066096A KR20020066096A (en) 2002-08-14
KR100406629B1 true KR100406629B1 (en) 2003-11-21

Family

ID=27693820

Family Applications (1)

Application Number Title Priority Date Filing Date
KR10-2001-0006319A KR100406629B1 (en) 2001-02-09 2001-02-09 Method for calculating a track pitch on writable medium

Country Status (1)

Country Link
KR (1) KR100406629B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0963181A (en) * 1995-08-18 1997-03-07 Matsushita Electric Ind Co Ltd Recording information reproducing device
JPH09120634A (en) * 1995-10-23 1997-05-06 Matsushita Electric Ind Co Ltd Optical disc drive
JPH11213395A (en) * 1998-01-30 1999-08-06 Sanyo Electric Co Ltd Track pitch measuring method and search method
JP2000298848A (en) * 1999-04-13 2000-10-24 Sanyo Electric Co Ltd Method for measurement and search of track pitch on disk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0963181A (en) * 1995-08-18 1997-03-07 Matsushita Electric Ind Co Ltd Recording information reproducing device
JPH09120634A (en) * 1995-10-23 1997-05-06 Matsushita Electric Ind Co Ltd Optical disc drive
JPH11213395A (en) * 1998-01-30 1999-08-06 Sanyo Electric Co Ltd Track pitch measuring method and search method
JP2000298848A (en) * 1999-04-13 2000-10-24 Sanyo Electric Co Ltd Method for measurement and search of track pitch on disk

Also Published As

Publication number Publication date
KR20020066096A (en) 2002-08-14

Similar Documents

Publication Publication Date Title
US7319649B2 (en) Recording apparatus and recording method
US20020136137A1 (en) Disk drive apparatus, and disk formatting method
US7349307B2 (en) Method of recording data optimally onto a recording medium
US6594214B1 (en) Drive apparatus and method for recording and/or reproducing data and for detecting a boundary between a recorded region and a recordable region on a recording medium
KR100746767B1 (en) Method for recording the data on a optical disc using optimal writing power
JP2001344753A (en) Disk drive device
US6762983B1 (en) Optical disc drive and method of controlling rotation number of a spindle motor for rotating an optical disc
JPH08329469A (en) Data recorder
KR100406629B1 (en) Method for calculating a track pitch on writable medium
JP2768584B2 (en) Optical disk recording and playback device
JP2003331426A (en) Optical disk drive
KR100525861B1 (en) Method for accessing target track on the optical disc
JP2002216350A (en) Recording device
JP2965717B2 (en) Optical information recording device
JPH0896535A (en) Disk device
JP4140418B2 (en) Optical disk device
KR100444629B1 (en) Method for determinating the optimal writing power of an optical disc
JP2003272162A (en) Optical disk apparatus
JP3941834B2 (en) Method for reproducing disc-shaped recording medium
JP2001229552A (en) Optical disk high speed searching device and method and optical disk
KR20050074021A (en) Method for recording the data on a optical disc using optimum write strategy
JP2001067707A (en) Laser output device, and disk drive device
JP2005056571A (en) Optical disk device
KR20070064826A (en) Method for controlling writing power of optical disk
JP2003051116A (en) Optical disk device

Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070918

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee