公开(公告)号：DE69434833T2

公开(公告)日：2007-03-29

申请号：DE69434833

申请日：1994-12-08

Applicant: SONY CORP

Inventor： SATO MAKOTO ,  IIJIMA YUKO ,  KAWAMURA HARUMI ,  SHIMA HISATO

IPC: H04B1/20 ,  G11B31/00 ,  H04L12/28 ,  H04L12/40 ,  H04L12/64 ,  H04N5/00 ,  H04N7/173 ,  H04N7/24 ,  H04N21/41 ,  H04N21/434 ,  H04N21/4363 ,  H04Q9/00

Abstract: A communications system comprises items of equipment connected via a bus capable of transferring combinations of control signals and AV signals as packets while providing an environment which is the same as an environment where connections are made using analog signal lines. A register decided by an address is taken to be a virtual plug for each item of equipment. A plug enable for an input plug is set to 1 and a synchronous communication packet for the AV signal from the channel set by the channel number is received. A plug enable for an output plug is set to one and the synchronous communication packet for the information signal is sent to the channel set by the channel number at a transmission speed designated by the DR (Data Rate) at the bandwidth expressed by "Bandwidth".

公开(公告)号：MY128076A

公开(公告)日：2007-01-31

申请号：MYPI9801757

申请日：1998-04-21

Applicant: SONY CORP

Inventor： ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  OSAKABE YOSHIO ,  SATO MAKOTO ,  ASANO TOMOYUKI ,  SHIMA HISATO

IPC: G06F11/00 ,  G06F12/14 ,  G06F1/00 ,  G06F21/00 ,  G06F21/24 ,  G11B19/04 ,  G11B19/12 ,  G11B20/00 ,  H04L9/08 ,  H04L9/10 ,  H04L9/32 ,  H04L12/40 ,  H04L12/64

Abstract: A HASH FUNCTION AND A SERVICE KEY ARE STORED IN ADVANCE IN AN EEPROM (50) OF A DVD PLAYER (1) SERVING AS A SOURCE. IN AN EEPROM (50) OF A PERSONAL COMPUTER (PC) SERVING AS A SINK. ON THE OTHER HAND, ITS ID AND A LICENSE KEY ARE STORED BEFOREHAND. THE DVD PLAYER (1) REQUESTS THE PC TO TRANSMIT THE ID. THE DVD PLAYER (1) THEN APPLIES THE HASH FUNCTION TO DATA RESULTING FROM CONCATENATION OF THE ID WITH THE SERVICE KEY TO GENERATE A LICENSE KEY (= HASH (ID I SERVICE 13 KEY)). SUBSEQUENTLY, THE DVD PLAYER (1) GENERATES A SOURCE SIDE SESSION KEY ARID ENCRYPTS THE SESSION KEY BY USING THE GENERATED LICENSE KEY. THEN, IHE DVD PLAYER (1) TRANSMITS THE ENCRYPTED SOURCE SIDE SESSION KEY TO THE PC (2). THE PC DECRYPTS THE ENCRYPTED SOURCE SIDE SESSION KEY BY USING THE LICENSE KEY STORED IN ITS EEPROM (50) TO PRODUCE A SINK SIDE SESSION KEY WHICH HAS A VALUE EQUAL TO THAT OF THE SOURCE SIDE SESSION KEY.(FIG 1)

公开(公告)号：DE69434833D1

公开(公告)日：2006-10-05

申请号：DE69434833

申请日：1994-12-08

Applicant: SONY CORP

Inventor： SATO MAKOTO ,  IIJIMA YUKO ,  KAWAMURA HARUMI ,  SHIMA HISATO

IPC: H04B1/20 ,  G11B31/00 ,  H04L12/28 ,  H04L12/40 ,  H04L12/64 ,  H04N5/00 ,  H04N7/173 ,  H04N7/24 ,  H04N21/41 ,  H04N21/434 ,  H04N21/4363 ,  H04Q9/00

Abstract: A communications system comprises items of equipment connected via a bus capable of transferring combinations of control signals and AV signals as packets while providing an environment which is the same as an environment where connections are made using analog signal lines. A register decided by an address is taken to be a virtual plug for each item of equipment. A plug enable for an input plug is set to 1 and a synchronous communication packet for the AV signal from the channel set by the channel number is received. A plug enable for an output plug is set to one and the synchronous communication packet for the information signal is sent to the channel set by the channel number at a transmission speed designated by the DR (Data Rate) at the bandwidth expressed by "Bandwidth".

公开(公告)号：DE69634327T2

公开(公告)日：2006-05-18

申请号：DE69634327

申请日：1996-12-20

Applicant: SONY CORP

Inventor： YANAGIHARA NAOFUMI ,  KOMURO TERUYOSHI ,  SHIMA HISATO

IPC: H04N5/91 ,  H04L12/40 ,  H04L12/64 ,  H04N5/00 ,  H04N5/44 ,  H04N5/783 ,  H04N5/92 ,  H04N5/926 ,  H04N7/16 ,  H04N7/173 ,  H04N7/24 ,  H04N7/52 ,  H04N9/804 ,  H04N19/00 ,  H04N19/423 ,  H04N19/44 ,  H04N19/65 ,  H04N19/70 ,  H04N19/85 ,  H04N19/89 ,  H04N21/433

Abstract: A digital signal processing device comprising: a detector for receiving a data stream which includes video packets, audio packets and supplementary information packets and detecting discontinuity of said received data stream; and a digital interface for generating discontinuity information in response to the detection of discontinuity by said detector and transmitting said received data stream and said generated discontinuity information to an external device. A digital signal playback method, comprising the steps of: playing back a digital signal coded by a predetermined coding scheme from a recording medium; determining when the program being played back has changed; and adding first identifying data to said digital signal when said program in said playback digital signal has changed.

公开(公告)号：MY122244A

公开(公告)日：2006-04-29

申请号：MYPI9801762

申请日：1998-04-21

Applicant: SONY CORP

Inventor： ISHIGURO RYUJI ,  OSAWA YOSHITOMO ,  OSAKABE YOSHIO ,  SATO MAKOTO ,  SHIMA HISATO ,  ASANO TOMOYUKI

IPC: H04L9/08 ,  H04N7/167 ,  G06F1/00 ,  G06F21/00 ,  G09C1/00 ,  G11B20/00

Abstract: THE INVENTION PROVIDES AN ENCIPHERING APPARATUS AND METHOD, A DECIPHERING APPARATUS AND METHOD AND AN INFORMATION PROCESSING APPARATUS AND METHOD BY WHICH ILLEGAL COPING CAN BE PREVENTED WITH CERTAINTY. DATA ENCIPHERED BY A 1394 INTERFACE (26) OF A DVD PLAYER (1) IS TRANSMITTED TO A PERSONAL COMPUTER (2) AND A MAGNETO-OPTICAL DISK APPARATUS (3) THROUGH A 1394 BUS (11). IN THE MAGNETO-OPTICAL DISK APPARATUS (3) WITH WHICH A CHANGE TO A FUNCTION IS NOT OPEN TO A USER, THE RECEIVED DATA IS DECIPHERED BY A 1394 INTERFACE (36). IN CONTRAST, IN THE PERSONAL COMPUTER (2) WITH WHICH A CHANGE TO A FUNCTION IS OPEN TO A USER, THE ENCIPHERED DATA IS DECIPHERED USING A TIME VARIABLE KEY (50) BY A 1394 INTERFACE (49), AND A RESULT OF THE DECIPHERMENT IS FURTHER DECIPHERED USING A SESSION KEY BY AN APPLICATION SECTION.

公开(公告)号：DE69832321D1

公开(公告)日：2005-12-22

申请号：DE69832321

申请日：1998-04-20

Applicant: SONY CORP

Inventor： OSAKABE YOSHIO ,  SATO MAKOTO ,  OSAWA YOSHITOMO ,  ASANO TOMOYUKI ,  ISHIGURO RYUJI ,  SHIMA HISATO

IPC: G11B20/10 ,  G06F21/10 ,  G06F21/62 ,  H04L9/08 ,  H04L9/14 ,  H04L9/16 ,  H04L12/28 ,  H04L12/40 ,  H04L12/64 ,  H04L47/43 ,  H04N7/24 ,  H04N21/436 ,  H04N21/4363 ,  H04N21/4367 ,  H04L29/06 ,  G11B20/00

Abstract: Data to be transmitted via a serial bus (5) in conformity with the IEEE 1394 protocol are ciphered by a ciphering/deciphering circuit (24), and headers are attached thereto by a header sync detecting/generating circuit (23). After further attachment of a CRC code by a CRC detector/generator (33), the data are packetized into isochronous packets of an isochronous mode by a transmission/reception switching circuit (21), whereby transmission of the data can be performed with enhanced security. Out of the cipher keys employed, a session key invariable in each session of the data is transmitted in each packet of an asynchronous mode, and a time variable key updated in each session is transmitted in each packet of an isochronous mode. The ciphered data obtained by depacketizing the packets of the isochronous mode are deciphered, so that the data transmitted with security can be deciphered exactly, and thus illegal use of the data can be prevented.

公开(公告)号：DE69434387D1

公开(公告)日：2005-07-07

申请号：DE69434387

申请日：1994-12-08

Applicant: SONY CORP

Inventor： SATO MAKOTO ,  KAWAMURA HARUMI ,  IIJIMA YUKO ,  SHIMA HISATO

IPC: G11B31/00 ,  H04B1/20 ,  H04L12/28 ,  H04L12/40 ,  H04L12/64 ,  H04N5/00 ,  H04N7/173 ,  H04N7/24 ,  H04N21/41 ,  H04N21/434 ,  H04N21/4363 ,  H04Q9/00

Abstract: A communications system comprises items of equipment connected via a bus capable of transferring combinations of control signals and AV signals as packets while providing an environment which is the same as an environment where connections are made using analog signal lines. A register decided by an address is taken to be a virtual plug for each item of equipment. A plug enable for an input plug is set to 1 and a synchronous communication packet for the AV signal from the channel set by the channel number is received. A plug enable for an output plug is set to one and the synchronous communication packet for the information signal is sent to the channel set by the channel number at a transmission speed designated by the DR (Data Rate) at the bandwidth expressed by "Bandwidth".

公开(公告)号：DE69718556D1

公开(公告)日：2003-02-27

申请号：DE69718556

申请日：1997-06-03

Applicant: SONY CORP

Inventor： SATO MAKOTO ,  KAWAMURA HARUMI ,  TANAKA TOMOKO ,  SHIMA HISATO

IPC: G06F3/14 ,  G06F3/048 ,  G06F13/00 ,  G11B20/10 ,  H04B1/20 ,  H04L12/28 ,  H04L12/40 ,  H04L12/64 ,  H04L29/06 ,  H04L29/08 ,  H04Q9/00

Abstract: To satisfactorily control electronic equipment on the controlled side by electronic equipment on the controlling side without useless processing. The VTR 11 and the camcorder 12 are provided with memory means for storing icon information and functional information. A computer 13 sends a command requesting icon information and functional information to the VTR 11 and the camcorder 12 and obtains their information as a response. The computer 13 displays icons showing the VTR 11 and the camcorder 12 on a display 13a based upon the icon information. The computer 13 displays a control panel displaying functions with which the VTR 11 and the camcorder 12 are provided in the format of a button and others on the display 13a based upon the functional information. The computer 13 is not required to inquire of the VTR 11 and the camcorder 12 whether the functions displayed on the panel correspond to the functions of them or not and a user can operate any function of the VTR 11 and the camcorder 12 on the panel.

公开(公告)号：DE69327296T2

公开(公告)日：2000-07-20

申请号：DE69327296

申请日：1993-10-22

Applicant: SONY CORP

Inventor： KORI TERUHIKO ,  YAMAZAKI HIROSHI ,  KAWAMURA HARUMI ,  SHIMA HISATO ,  OGAWA KAZUYUKI

IPC: G11B15/04 ,  G11B15/07 ,  G11B23/087 ,  G11B27/11 ,  G11B27/34 ,  G11B27/36 ,  G11B15/06

Abstract: A recorded data securing mechanism secures data recorded on a recording medium cassette provided with a memory and a data recording enable/disable tab at a predetermined position on the cassette. Breaking the recording enable/disable tab provided on the memory-based recording medium cassette prevents data recorded on the cassette from being written over and ensures that there will be no mismatch between the recording information stored in the memory of the cassette and the data recorded on the recording medium of the cassette. In one embodiment, rewriting is enabled but a memory mismatch flag is set if rewriting results in a mismatch.

公开(公告)号：DE69328654D1

公开(公告)日：2000-06-21

申请号：DE69328654

申请日：1993-07-22

Applicant: SONY CORP

Inventor： SHIMA HISATO ,  YAMAZAKI HIROSHI ,  OGAWA KAZUYUKI ,  KAWAMURA HARUMI

IPC: H04L12/46 ,  H04L12/66

Abstract: A network system wherein any device in all networks can be represented using addresses set in the individual networks without relying upon the concept of a network number is disclosed. A first network (1) includes first to third devices (A, B, C) to which the addresses of "1", "2" and "3" are allocated, respectively. A second network (2) includes first to devices (D, E, F) to which the addresses of "1", "2" and "3" are allocated, respectively. A third network (3) includes first and second devices (G and H) to which the addresses "1" and "2" are allocated, respectively. The first and second networks (1, 2) are connected to each other by way of a gateway (GW1) and the second and third networks (2 and 3) are connected to each other by way of another gateway (GW2) to build up a network system. A pass from within a network to another device in another network is represented using the addresses set in the individual networks. For example, the pass from the first device (A) in the first network (1) to the second device (H) in the third network (3) is represented as "4.4.2".