KR970050153A - Recording Current Control Circuit of Magnetic Disk Recording Device and Its Optimization Method - Google Patents

Recording Current Control Circuit of Magnetic Disk Recording Device and Its Optimization Method Download PDF

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Publication number
KR970050153A
KR970050153A KR1019950059454A KR19950059454A KR970050153A KR 970050153 A KR970050153 A KR 970050153A KR 1019950059454 A KR1019950059454 A KR 1019950059454A KR 19950059454 A KR19950059454 A KR 19950059454A KR 970050153 A KR970050153 A KR 970050153A
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South Korea
Prior art keywords
recording
current control
recording current
value
control value
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KR1019950059454A
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Korean (ko)
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KR100346168B1 (en
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김진석
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김광호
삼성전자 주식회사
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers

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  • Digital Magnetic Recording (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

자기 디스크 기록장치에서 기록전류를 제어하는 회로 및 방법이다.A circuit and method for controlling a recording current in a magnetic disk recording apparatus.

2. 발명이 해결하고자 하는 기술적 과제2. Technical problem to be solved by the invention

하드에어를 변경하지 않고 각 헤드의 특성에 맞게 기록전류를 최적상태로 적응적으로 설정 및 제어하여 독출/기록시 에러를 감소시킨다.Without changing the hard air, the recording current is adaptively set and controlled in an optimal state according to the characteristics of each head to reduce read / write errors.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

기록전류량을 결정하기 위해 미리 설정한 기록전류제어값에 대응하는 선택제어신호들에 따라 독출/기록회로의 기록전류제어단자와 접지간의 전항값을 가변시켜 기록전류량을 조정하며, 헤드마다에 대해 기록전류제어값을 일정 범위내에서 단계적으로 증가시키면서 각 단계마다 일정 횟수만큼 독출시험을 하고, 그에따른 에러발생 횟수에 근거하여 해당 헤드에 대한 최적의 기록전류제어값을 설정한다.In order to determine the amount of recording current, the recording current is adjusted by varying the previous value between the recording current control terminal of the read / write circuit and the ground according to selection control signals corresponding to the preset recording current control value, and recording for each head. The reading test is performed a certain number of times for each step while increasing the current control value step by step within a certain range, and the optimum recording current control value for the head is set based on the number of error occurrences.

4. 발명의 중요한 용도4. Important uses of the invention

자기 디스크 기록장치에서 기록전류의 설정 및 제어에 이용한다.It is used for setting and controlling the recording current in the magnetic disk recording apparatus.

※ 선택도: 제3도, 제5도※ Selectivity: 3rd, 5th

Description

자기 디스크 기록장치의 기록전류 제어회로와 그 최적화방법Recording Current Control Circuit of Magnetic Disk Recording Device and Its Optimization Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 따른 기록전류 제어회로도.3 is a write current control circuit diagram according to the present invention.

제4도는 본 발명에 따른 제3도의 회로를 제2도의 HDD에 적용한 예를 보인 블럭구성도.4 is a block diagram showing an example in which the circuit of FIG. 3 according to the present invention is applied to the HDD of FIG.

제5도는 본 발명에 따른 기록전류 최적화 흐름도.5 is a flowchart for optimizing a recording current according to the present invention.

Claims (10)

자기 디스크상에 데이타 기록시 기록전류제어단자의 전류량에 대응하는 값의 기록전류를 기록데이타에 따라 헤드에 인가하는 독출/기록소자를 구비하는 자기 디스크 기록장치의 기록전류 제어회로에 있어서, 상기 기록전류량을 결정하기 위해 미리 설정한 기록전류제어값에 대응하는 선택제어신호들을 발생하는 제어수단과, 상기 기록전류제어단자와 상기 제어수단에 접속되며 상기 선택제어신호들에 따라 상기 기록전류제어단자와 접지간의 저항값을 가변시켜 상기 기록전류제어단자의 전류량을 조정하는 기록전류 조정수단을 구비하는 것을 특징으로 하는 기록전류 제어회로.A recording current control circuit of a magnetic disc recording apparatus, comprising: a read / write element for applying a recording current having a value corresponding to the amount of current of a recording current control terminal to a head in accordance with recording data when data is recorded on the magnetic disk; Control means for generating selection control signals corresponding to a preset write current control value for determining an amount of current; and connected to the write current control terminal and the control means, the write current control terminal according to the selection control signals. And a recording current adjusting means for adjusting a current amount of the recording current control terminal by varying a resistance value between grounds. 제1항에 있어서, 상기 기록전류 조정수단이, 상기 기록전류제어단자와 접지 사이에 접속되는 기준 저항소자와 상기 기록전류제어단자 및 기준 저향소자의 접속점에 접속되는 다수의 선택 저항소자와, 상기 선택 저항 소자들중 하나와 제어수단 사이에 접속되고 상기 선택제어신호들을 하나씩 대응되게 입력하며 대응하는 선택 저항소자를 상기 선택제어신호에 따라 선택적으로 상기 기준 저항소자와 병렬 연결하는 다수의 버퍼로 구성하는 것을 특징으로 하는 기록전류 제어회로.2. The apparatus of claim 1, wherein the recording current adjusting means comprises: a plurality of selective resistance elements connected to a reference resistance element connected between the recording current control terminal and ground, and a connection point of the recording current control terminal and the reference echo element; A plurality of buffers connected between one of the selection resistor elements and the control means and correspondingly inputting the selection control signals one by one, and selectively connecting the corresponding selection resistor elements in parallel with the reference resistance element according to the selection control signal. The recording current control circuit, characterized in that. 제2항에 있어서, 상기 버퍼들이 반전버퍼인 것을 특징으로 하는 기록전류 제어회로.3. The write current control circuit according to claim 2, wherein the buffers are inverted buffers. 제1항 또는 제2항에 있어서, 상기 기록전류제어값이, 상기 자기 디스크 기록장치에 구비된 모든 헤드를 각각에 대응되게 설정된 최적 기록전류제어값인 것을 특징으로 하는 기록전류 제어회로.3. The recording current control circuit according to claim 1 or 2, wherein the recording current control value is an optimum recording current control value in which all heads provided in the magnetic disk recording apparatus are set to correspond to each other. 제4항에 있어서, 상기 제어수단이, 상기 디스크상에 데이타를 기록하기 위해 선택되는 헤드에 대응하는 상기 최적 기록전류제어밧에 따라 서로 다른 논리상태로 상기 선택제어신호들을 발생하는 것을 특징으로 하는 기록전류 제어회로.5. The method according to claim 4, wherein said control means generates said selection control signals in different logic states in accordance with said optimum recording current control batt corresponding to a head selected for recording data on said disk. Recording current control circuit. 자기 디스크상에 데이타 기록시 기록전류제어단자의 전류량에 대응하는 기록전류를 기록데이타에 따라 헤드에 인가하는 독출/기록소자와, 소정기록전류를 기록데이타에 따라 헤드에 인가하는 독출/기록소자와, 소정 기록전류제어값에 대응하는 선택제어신호들에 따라 상기 기록전류제어단자와 접지간의 저항값을 가변시켜 상기 기록전류제어단자의 전류량을 조정하는 기록전류 조정수단을 구비하는 자기 디스크 기록장치의 기록전류 최적화방법에 있어서, 상기 헤드마다에 대해 기록전류제어값을 일정 범위내에서 단계적으로 증가시키면서 각 단계마다 일정 횟수만큼 독출시험을 하여 각 단계의 기록전류제어값마다에 대해 에러발생횟수를 검사하는 시험과정과, 상기 에러발생횟웨 근거하여 해당 헤드에 대해 최적의 기록전류제어값을 설정하는 설정과정을 구비하는 것을 특징으로 하는 기록전류 최적화방법.A read / write element for applying a recording current corresponding to the amount of current of the write current control terminal to the head in accordance with the recording data when writing data on the magnetic disk, and a read / recording element for applying a predetermined write current to the head in accordance with the recording data; And recording current adjusting means for adjusting an amount of current of the recording current control terminal by varying a resistance value between the recording current control terminal and the ground in accordance with selection control signals corresponding to a predetermined recording current control value. In the recording current optimization method, a read test is performed a predetermined number of times for each step while increasing the recording current control value step by step within a predetermined range for each head to check the frequency of error occurrence for each recording current control value of each step. To set an optimal recording current control value for the head based on the test procedure and the error occurrence frequency. Write current optimization method, it characterized in that it comprises a jeonggwajeong. 제6항에 있어서, 상기 설정과정이, 상기 최적 기록전류제어값을 상기 디스크상의 유지관리영역에 디폴트값으로 기록하여 이후 데이타 기록시에 이용되도록 하는 것을 특징으로 하는 기록전류 최적화방법.7. The recording current optimizing method as claimed in claim 6, wherein the setting process records the optimum recording current control value as a default value in a maintenance area on the disk so as to be used for subsequent data recording. 제7항에 있어서, 상기 설정과정이, 상기 에러발생횟수가 가장 적은 단계의 기록전류제어값을 최적 기록전류제어값으로 설정하는 것을 특징으로 하는 기록전류 최적화방법.8. The recording current optimizing method as claimed in claim 7, wherein said setting process sets the recording current control value at the step of having the smallest frequency of error as an optimal recording current control value. 제7항에 있어서, 상기 설정과정이, 상기 에러발생횟수가 가장 적은 단계의 기록전류제어값들중 최소값과 최대값을 평균하여 최적 기록전류제어값으로 설정하는 것을 특징으로 하는 기록전류 최적화방법.8. The recording current optimization method according to claim 7, wherein the setting process sets an optimal recording current control value by averaging the minimum value and the maximum value among the recording current control values of the step in which the error occurrence frequency is the smallest. 제7항에 있어서, 상기 설정과정이, 상기 에러발생횟수가 급격히 증가하는 최소 단계의 기록전류제어값과 최대 단계의 기록전류제어값을 평균하여 최적 기록전류제어값으로 설정하는 것을 특징으로 하는 기록전류 최적화방법.8. The recording method as claimed in claim 7, wherein the setting process sets the optimal recording current control value by averaging the recording current control value of the minimum step and the recording current control value of the maximum step in which the error occurrence frequency increases rapidly. Current optimization method. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950059454A 1995-12-27 1995-12-27 Circuit for controlling writing current of magnetic disc recording system and optimizing method thereof KR100346168B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432505B1 (en) * 1996-11-21 2004-09-08 삼성전자주식회사 Method for optimizing write current applied to plural zones of magnetic disk in consideration of characteristics of each head and disk
KR100464432B1 (en) * 2001-10-15 2005-01-03 삼성전자주식회사 Method and apparatus for providing write current optimization

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100432505B1 (en) * 1996-11-21 2004-09-08 삼성전자주식회사 Method for optimizing write current applied to plural zones of magnetic disk in consideration of characteristics of each head and disk
KR100464432B1 (en) * 2001-10-15 2005-01-03 삼성전자주식회사 Method and apparatus for providing write current optimization

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