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公开(公告)号：DE69126685D1
公开(公告)日：1997-08-07
申请号：DE69126685
申请日：1991-07-16
Applicant: SONY CORP
Inventor： NAGANO NAOKI , KAWAMURA HARUMI , SHIMA HISATO
IPC: H04B1/20 , H04L12/24 , G11B27/028 , G06F12/06
Abstract: The present invention provides a control apparatus for controlling a plurality of recording and reproducing apparatuses (50, 60, 70, 80). The control apparatus according to the present invention comprises elapse time measuring means, responsive to an input reset signal determining an input time point, for commencing to measure time elapse with reference to the input time point, recording position information output means, responsive to an input predetermined signal, for detecting and outputting recording position information from a record medium of one of the recording and reproducing apparatuses, and control means for receiving the time elapse measured by said elapse time measuring means, determining an execution time in response to the time elapse, and executing an operation command at said execution time in response to said operation command.
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公开(公告)号：CA2351184A1
公开(公告)日：1995-02-02
申请号：CA2351184
申请日：1994-07-19
Applicant: SONY CORP
Inventor： MATSUNO KATSUMI , KUBOTA ICHIRO , HAYASHI MINOBU , SHIMA HISATO
IPC: G06F13/42
Abstract: A bus management node 11 has a register for channels in use REG1 and.a b us capacity register REG2. Before starting the synchronous communication, each node 12 transmits a read-out command to the register for channels in use REG1 and the register for channels in use REG1 in order to read out their contents for ascertaining the number of the un-used channel and the residual capacity. If there is any un-used channel and any residual bus capacity, the node 12 transmits write commands to these registers REG1 and REG2 so that the number of the channel to be in use and the capacity of the bus to be in use will be stored in the register for channels in use REG1 and the bus capacity register REG2. When carrying out the writing in REG1 an d REG2, the node 12 compares read channel state information and read bus sta te information read out by the read-out command with channel state information and bus state information in REG1 and REG2 respectively. If the read channel information and the bus state information are identical to the channel state information and the bus state information in REG1 and REG2 respectively, it writes new channel information and new bus state information. This makes it possible to elimina te the possibility of wirting by other nodes.
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公开(公告)号：DE602004018895D1
公开(公告)日：2009-02-26
申请号：DE602004018895
申请日：2004-08-10
Applicant: SONY CORP
Inventor： SHIMA HISATO , NAKANO TAKEHIKO
Abstract: There is provided a configuration enabling prevention in advance of leakage and outflow of secret information in the local network, such as private data and content whose copyright and use right is restricted. A plurality of identification information of a communication destination device are acquired at different data processing levels. Identification information acquired by data processing at a level of a physical layer or a data link layer of the OSI reference model and identification information acquired by data processing at a layer level of a network layer or higher are received and these identification information are matched. In addition, at least one of identification information receives generated data generated by an encryption process or a hash value generation process based on secret information shared with the communication source device. By matching a plurality of identification information and in accordance with a satisfied or an unsatisfied state of the matching, it is determined whether or not the communication destination device is a device connected to the same local network.
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公开(公告)号：DE602004008589D1
公开(公告)日：2007-10-11
申请号：DE602004008589
申请日：2004-11-15
Applicant: SONY CORP
Inventor： SHIMA HISATO , NAKANO TAKEHIKO
Abstract: Transmission of contents from a transmitting apparatus to a plurality of receiving apparatuses is performed, while putting restrictions on a communication area and the number of receiving apparatuses in conformity with a definition of DTCP. In a case of a need to distribute literary works such as movies and the music within a single home network, while preventing the transmission of the literary works to other home networks, a degree of freedom in communication is raised in a case where a communication delay time is short so that a high possibility exists that the communication delay time falls within a specific range. Conversely, in a case where the communication delay time is long so that a low possibility exists that the communication delay time falls within the specific range, the degree of freedom in communication is lowered. Thus, it is allowable to implement a system that ensures a high barrier to unauthorized content distributions, and also, does not have any remarkable restrictions on a rightful home use.
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公开(公告)号：DE69634891T2
公开(公告)日：2006-04-27
申请号：DE69634891
申请日：1996-08-12
Applicant: SONY CORP
Inventor： OSAKABE YOSHIO , SHIMA HISATO , SATO MAKOTO
IPC: G06F1/00 , G10H1/00 , G11B27/031 , H04H20/88 , H04J3/06 , H04L12/40 , H04L12/64 , H04L29/06 , H04N7/24
Abstract: A data communication technique enables a reduction in the number of terminals in equipment for inputting or outputting a real time digital signal such as a digital audio signal and a music/musical instrument signal. A first converter (6) and a second converter (7) are provided with a function of mutual conversion between a signal format of a digital audio interface and a signal format of IEEE-1394. For example, it is possible to transmit a signal of a digital audio interface outputted from a first CD player (1) to the first converter (6), to convert the signal there into a packet of IEEE-1394 isochronous transmission format and transmit it to the second converter (7), and to return the packet to the digital audio interface and record a digital audio signal in an MD recorder (3). When a converter having a function of mutual conversion between the MIDI signal format and the IEEE-1394 signal format is provided, it is also possible to perform bidirectional data communication among a plurality of MIDI musical instruments.
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Patent Agency Ranking
公开(公告)号：DE69534127T2
公开(公告)日：2006-02-16
申请号：DE69534127
申请日：1995-06-23
Applicant: SONY CORP
Inventor： IIJIMA YUKO , SHIMA HISATO , KAWAMURA HARUMI , SATO MAKOTO
Abstract: There is provided a method of controlling communication for a communication system for connecting a plurality of electronic apparatuses through a communication control bus and allowing data communication between those electronic apparatuses wherein each of the electronic apparatuses performs connection control through the execution of a connection control command carried out by writing connection control information in a predetermined storage means of its own or another electronic apparatus. The electronic apparatuses which attempt to write the connection control information transmit the write instructions in a predetermined storage means. The storage means which has received the write instructions executes only the earliest write instruction and transmits responses indicating whether the execution of respective write instructions is successful or not.
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公开(公告)号：MY121311A
公开(公告)日：2006-01-28
申请号：MYPI9801787
申请日：1998-04-21
Applicant: SONY CORP
Inventor： ISHIGURO RYUJI , OSAWA YOSHITOMO , OSAKABE YOSHIO , SATO MAKOTO , SHIMA HISATO , ASANO TOMOYUKI , NAKANO TAKEHIKO
IPC: G06F12/14 , H04L9/00 , G06F1/00 , G06F21/00 , G06F21/24 , G11B19/04 , G11B19/12 , G11B20/00 , G11B20/10 , H04L9/08 , H04L12/40 , H04L12/64
Abstract: AN INFORMATION PROCESSING APPARATUS AND AN INFORMATION PROCESSING METHOD ARE CAPABLE OF PREVENTING INFORMATION FROM BEING COPIED ILLEGALLY. TO PUT IT IN DETAIL, A HASH FUNCTION AND A SERVICE KEY ARE STORED IN ADVANCE IN AN EEPROM OF A DVD PLAYER SERVING AS A SOURCE. IN AN EEPROM 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 REQUESTS THE PC TO TRANSMIT THE ID. THE DVD PLAYER THEN APPLIES THE HASH FUNCTION TO DATA RESULTING FROM CONCATENATION OF THE ID WITH THE SERVICE KEY TO GENERATE A LICENSE KEY (=HASH ID // SERVICE _KEY)). SUBSEQUENTLY, THE DVD PLAYER GENERATES A SOURCE SIDE COMMON SESSION KEY AND ENCRYPTS THE SESSION KEY BY USING THE GENERATED LICENSE KEY. THEN, THE DVD PLAYER TRANSMITS THE ENCRYPTED SOURCE SIDE COMMON SESSION KEY TO THE PC. THE PC DECRYPTS THE ENCRYPTED SOURCE SIDE COMMON SESSION KEY BY USING THE LICENSE KEY STORED IN ITS EEPROM TO PRODUCE A SINK SIDE COMMON SESSION KEY WHICH HAS A VALUE EQUAL TO THAT OF THE SOURCE SIDE COMMON SESSION KEY.FIG. 6
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公开(公告)号：MY121267A
公开(公告)日：2006-01-28
申请号：MYPI9704061
申请日：1997-09-03
Applicant: SONY CORP
Inventor： KOMURO TERUYOSHI , KAWAMURA HARUMI , SHIMA HISATO
Abstract: THE CGMS UNACCEPTABLE RECORDER (2) ACCEPTS TRANSMISSION FRAMES ONLY WHEN THE COPYRIGHT PROTECTION INFORMATION IN A TRANSMISSION HEADER (CIP HEADER) TRANSMITTED TO THE IEEE1394 SERIAL BUS (3) INDICATES COPY FREE. THE CGMS ACCEPTABLE RECORDER ACCEPTS TRANSMISSION FRAMES WHEN THE COPYRIGHT PROTECTION INFORMATION IN THE TRANSMISSION HEADER INDICATES COPY FREE. WHEN THE COPYRIGHT PROTECTION INFORMATION IN THE TRANSMISSION HEADER INDICATES COMPLIANCE WITH THE COPYRIGHT INFORMATION CONTAINED IN THE CONTENT OF THE TRANSMISSION FRAME, THE COPYRIGHT INFORMATION IN THE CONTENT IS FETCHED BASED ON THE SIGNAL FORMAT TYPE INFORMATION OF THE TRANSMISSION HEADER (CIP HEADER). A COPY MANAGEMENT INFORMATION CHANGEABLE APPARATUS SUCH AS A COMPUTER CANNOT ACCEPT DATA OTHER THAN COPY FREE SIGNALS FROM THE DIGITAL INTERFACE.
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公开(公告)号：MY120654A
公开(公告)日：2005-11-30
申请号：MYPI9403272
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 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. AREGISTER DECIDED BY AN ADDRESS IS TAKEN TO BE A VIRTUAL PLUG FOR EACH ITEM OF EQUIPMENT. THE PLUG ENABLE FOR THE 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. THE PLUG ENABLE FOR THE 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".
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公开(公告)号：DE69534127D1
公开(公告)日：2005-05-12
申请号：DE69534127
申请日：1995-06-23
Applicant: SONY CORP
Inventor： IIJIMA YUKO , SHIMA HISATO , KAWAMURA HARUMI , SATO MAKOTO
Abstract: There is provided a method of controlling communication for a communication system for connecting a plurality of electronic apparatuses through a communication control bus and allowing data communication between those electronic apparatuses wherein each of the electronic apparatuses performs connection control through the execution of a connection control command carried out by writing connection control information in a predetermined storage means of its own or another electronic apparatus. The electronic apparatuses which attempt to write the connection control information transmit the write instructions in a predetermined storage means. The storage means which has received the write instructions executes only the earliest write instruction and transmits responses indicating whether the execution of respective write instructions is successful or not.
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