公开(公告)号：MY123020A

公开(公告)日：2006-05-31

申请号：MYPI9904360

申请日：1999-10-08

Applicant: PANASONIC CORP

Inventor： NONOMURA TOMOYUKI ,  INOUE MITSUHIRO ,  MINAMI MASATAKA ,  KOZUKA MASAYUKI

IPC: G11B20/10 ,  G06F12/14 ,  G10L11/00 ,  G11B20/00 ,  H03M7/00

Abstract: IN THIS INVENTION, AS SHOWN IN 1, A STREAM ATTRIBUTE DECISION MEANS (101) FOR DECIDING WHETHER AN AUDIO DATA STREAM SUPPLIED FROM THE OUTSIDE HAS BEEN COMPRESSED OR NOT IS PROVIDED, AND A COMPRESSION ID FLAG FCO HAVING A VALUE ACCORDING TO THE RESULT OF THIS DECISION IS ATTACHED TO THE AUDIO DATA STREAM, AND THE FLAG-ATTACHED AUDIO DATA STREAM IS WRITTEN IN THE STREAM STORAGE UNIT (L00B). THEREBY, AFTER A COMPRESSED AUDIO DATA STREAM FROM THE OUTSIDE IS READ FROM THE STREAM STORAGE UNIT, A WATERMARK CAN BE INSERTED INTO THE COMPRESSED AUDIO DATA STREAM. THEREFORE, THE TIME REQUIRED FOR WRITING THE COMPRESSED AUDIO DATA STREAM INTO THE STREAM STORAGE UNIT IS REDUCED, AND THE SOUND QUALITY OF ANALOG AUDIO DATA OBTAINED BY REPRODUCING THE COMPRESSED AUDIO DATA STREAM IS PREVENTED FROM BEING DEGRADED. 1

公开(公告)号：MY122214A

公开(公告)日：2006-03-31

申请号：MYPI9905779

申请日：1999-12-28

Applicant: PANASONIC CORP

Inventor： INOUE MITSUHIRO ,  HARADA SYUNJI ,  KOZUKA MASAYUKI ,  TATEBAYASHI MAKOTO ,  FUKUSHIMA YOSHIHISA ,  SERIKAWA MITSUHIKO

IPC: G11B20/00 ,  G11B20/10 ,  G06F1/00 ,  G06T1/00 ,  G11B20/12 ,  G11B27/034 ,  H04N1/32

Abstract: THERE IS PROVIDED A COPYING SYSTEM (1) FOR COPYING INFORMATION RECORDED ON A FIRST RECORDING MEDIUM (102) ONTO A SECOND RECORDING MEDIUM (212). THE FIRST RECORDING MEDIUM (102) IS RECORDED WITH COPYING CONTROL INFORMATION (30) FOR REPRESENTING CONDITIONS FOR PERMITTING COPYING OF THE INFORMATION RECORDED ON THE FIRST RECORDING MEDIUM (102), THE COPYING CONTROL INFORMATION (30) BEING MULTIPLEXED WITHIN THE INFORMATION RECORDED ON THE FIRST RECORDING MEDIUM (102). THE COPYING SYSTEM (1) INCLUDES: A READING SECTION (110) FOR READING THE INFORMATION FROM THE FIRST RECORDING MEDIUM (102); A DETECTION SECTION (114) FOR DETECTING THE COPYING CONTROL INFORMATION (30) WITHIN THE INFORMATION READ FROM THE FIRST RECORDING MEDIUM (102); A MODIFICATION SECTION (208) FOR, IF THE COPYING CONTROL INFORMATION (30) REPRESENTS A CONDITION THAT "ONLY COPYING TO A SECOND GENERATION COPY IS PERMITTED", MODIFYING THE COPYING CONTROL INFORMATION (30) SO AS TO PROHIBIT ANY FURTHER COPYING: AND A WRITING SECTION (210) FOR WRITING INFORMATION INCLUDING THE MODIFIED COPYING CONTROL INFORMATION (30), ONTO THE SECOND RECORDING MEDIUM (212).