| 发明名称 |
Method and apparatus for generating descrambling data for CD-ROM decoder |
| 摘要 |
Descrambled data is generated for a CD-ROM decoder and a descrambler. A lower first through fifteenth bits of the descrambled data are generated according to an equation DSCR0[x]=DSCR-1[x+2](+)DSCR-1[x+4], where 1</=i</=15. The upper sixteenth through thirty-second bits of the descrambled data are generated according to the equation DSCR0[x]=DSCR0[x-15](+)DSCR0[x-14], where 16</=i</=32. DSCR0[x] is an x-th bit of current 32-bit descrambled data, DSCR-1[x] is an x-th bit of preceding 32-bit descrambled data and a symbol (+) refers to an EX-OR operation.
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| 申请公布号 |
US5984521(A) |
申请公布日期 |
1999.11.16 |
| 申请号 |
US19970851772 |
申请日期 |
1997.05.06 |
| 申请人 |
SAMSUNG ELECTRONICS, CO., LTD. |
发明人 |
BANG, SUNG-JO |
| 分类号 |
G11B7/00;G11B7/005;G11B20/10;(IPC1-7):H03M7/00;G11B20/14 |
主分类号 |
G11B7/00 |
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