KR960002285A - Digital Modulation Method and Apparatus - Google Patents
Digital Modulation Method and Apparatus Download PDFInfo
- Publication number
- KR960002285A KR960002285A KR1019940012525A KR19940012525A KR960002285A KR 960002285 A KR960002285 A KR 960002285A KR 1019940012525 A KR1019940012525 A KR 1019940012525A KR 19940012525 A KR19940012525 A KR 19940012525A KR 960002285 A KR960002285 A KR 960002285A
- Authority
- KR
- South Korea
- Prior art keywords
- codeword
- inrzi
- dsv
- modulation
- polarity
- Prior art date
Links
Classifications
-
- 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
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10037—A/D conversion, D/A conversion, sampling, slicing and digital quantisation or adjusting parameters thereof
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Dc Digital Transmission (AREA)
Abstract
본 발명은 부호어의 직류성분을 디지탈 변조방법 및 장치에 관한 것으로, 정보어의 최상위비트에 부가비트 '1'을 부가한 제1부호어와 0'을 부가한 제2부호어를 발생하는 제1단계; 제1 및 제2부호어의 기수코드에 대한 NRZL CDS를 각각 검출하는 제2단계; 현재의 INRZL DSV값의 극성이 정(+) 또는 부(-)인지의 여부를 판단하는 제3단계; 제3단계에서 INRZI DSV값이 극성이 정(+)이면 NRZI CDS의 극성이 부(-)인 부호어를 선택하고, 그렇지 않으면 NRZI CDS의 극성이 정(+)인 부호어를 선택하는 제4단계; 및 제4단계에서 선택된 부호어를 INRZI변조하는 제5단계를 포함함을 특징으로 한다.The present invention relates to a digital modulation method and apparatus for direct-current components of a codeword, and includes a first coder adding an additional bit '1' to a most significant bit of an information word and a first codeword generating a second codeword added with 0 '. step; Detecting each of the NRZL CDSs for the odd codes of the first and second codewords; Determining whether the polarity of the current INRZL DSV value is positive (+) or negative (-); A fourth step of selecting a codeword having a negative polarity of the NRZI CDS if the INRZI DSV value is positive in the third step; otherwise, selecting a codeword having a positive polarity of the NRZI CDS. step; And a fifth step of INRZI modulation of the codeword selected in the fourth step.
본 발명에 의하면, 정보어의 우스코드에 대한 CDS에 따라 부호어를 선택하므로써, INRZI변조파형의 DSV를 유한하게 제어하여 부호어의 직류성분을 억제할 수 있다.According to the present invention, by selecting the codeword according to the CDS for the information code of the information word, the DSV of the INRZI modulated waveform can be finitely controlled to suppress the DC component of the codeword.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제15도는 본 발명에 의한 디지탈변조방법을 설명하는 흐름도.15 is a flowchart for explaining a digital modulation method according to the present invention.
제16도는 본 발명에 의한 디지탈변조장치의 구성블럭도.16 is a block diagram of a digital modulator according to the present invention.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940012525A KR970010524B1 (en) | 1994-06-03 | 1994-06-03 | Digital modulation method and apparatus thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940012525A KR970010524B1 (en) | 1994-06-03 | 1994-06-03 | Digital modulation method and apparatus thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960002285A true KR960002285A (en) | 1996-01-26 |
KR970010524B1 KR970010524B1 (en) | 1997-06-26 |
Family
ID=19384624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940012525A KR970010524B1 (en) | 1994-06-03 | 1994-06-03 | Digital modulation method and apparatus thereof |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970010524B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100407496B1 (en) * | 2001-04-02 | 2003-12-01 | 엘지전자 주식회사 | Method and apparatus of converting a series of data words into a modulated signal |
KR100444982B1 (en) * | 2001-06-05 | 2004-08-21 | 삼성전자주식회사 | Coding method with DC suppressed codestream and decoding method thereof |
-
1994
- 1994-06-03 KR KR1019940012525A patent/KR970010524B1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100407496B1 (en) * | 2001-04-02 | 2003-12-01 | 엘지전자 주식회사 | Method and apparatus of converting a series of data words into a modulated signal |
KR100444982B1 (en) * | 2001-06-05 | 2004-08-21 | 삼성전자주식회사 | Coding method with DC suppressed codestream and decoding method thereof |
Also Published As
Publication number | Publication date |
---|---|
KR970010524B1 (en) | 1997-06-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57176866A (en) | Encoder of binary signal | |
KR940012366A (en) | Modulation method, modulation device and demodulation device | |
US7289410B2 (en) | ADIP demodulation method and apparatus | |
KR920007336A (en) | Digital circuit | |
MY135200A (en) | Adaptive writing method for high-density optical recording apparatus and circuit thereof | |
KR830008558A (en) | Waveform Conversion Circuit | |
KR840009158A (en) | Information conversion method | |
KR850005061A (en) | Information converter | |
KR910013186A (en) | EFM Modulation Circuit | |
KR960005552A (en) | Digital Modulation / Demodulation Method and Device Using the Same | |
KR880014546A (en) | Digital PLL circuit | |
KR950020636A (en) | Digital data processing device and method | |
KR950015345A (en) | Error Correction Circuit | |
KR950009538A (en) | Magnetic recording and reproducing apparatus and method | |
KR960002285A (en) | Digital Modulation Method and Apparatus | |
KR920003293A (en) | Code modulation device | |
KR940010046A (en) | Modulation circuit | |
KR860003715A (en) | Information transmission method, encoding and decoding device | |
KR890009127A (en) | Frame Synchronization Method and System | |
KR970007703A (en) | An adjustment bit determination method of write data, an adjustment bit determination circuit, a write data creation circuit, and a disk device | |
KR950034187A (en) | Modulation method, recording method, reproducing method, recording and reproducing apparatus, recording and reproducing method and reproducing apparatus | |
JPS62272726A (en) | Coding circuit | |
JPH0477991B2 (en) | ||
JPS5211916A (en) | Signalization method | |
JP2003536315A (en) | Device for encoding a stream of data bits of a binary source signal into a stream of data bits for a binary channel signal, a memory means, a device for recording information, a record carrier, a device for encoding, and a device for reproducing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20060928 Year of fee payment: 10 |
|
LAPS | Lapse due to unpaid annual fee |