摘要:
A storage apparatus has input means for inputting an input/output execution time prediction request from an external system and determining means for predicting the execution time of the input/output request in response to the input/output execution time prediction request. The storage apparatus predicts the execution time of the input/output request and provides a response to the external system in response to the input/output execution time prediction request input from the external system.
摘要:
The disk apparatus and the audiovisual data processing apparatus in accordance with the present invention are apparatuses having a stream data processing function and virtually provided with each command processing function for digital VCRs so as to be capable of meeting various processing requests from external apparatuses; and they are configured so that the audiovisual frame boundaries of audiovisual data are detected, so that audiovisual data received externally and continuously is divided in audiovisual frame units in accordance with the detected audiovisual frame boundaries, and so that the data divided in audiovisual frame units is controlled so as to be stored on a disk medium. Furthermore, the audiovisual control method in accordance with the present invention is configured to carry out control so that the audiovisual frame boundaries of audiovisual data are detected, and so that audiovisual data received externally and continuously is divided in audiovisual frame units in accordance with the detected audiovisual frame boundaries.
摘要:
The present invention is a magnetic disk apparatus which is provided with means for dividing a large amount of data such as video data into segments with error correction code added thereto and further dividing the data including the error correction code into recording segments, while being capable of efficiently correcting errors even for a sector size of large unit and processing sectors of variable length.
摘要:
An AV data transmission apparatus includes an encryption unit which encrypts AV data, an AV data transmission unit which transmits the encrypted AV data, a cipher-type-information switching unit which switches cipher type information indicating a cipher scheme used for the AV data, to other cipher type information, and a cipher-type-information transmission unit which transmits cipher type information. When transmitting AV data which is prohibited from being used in a reception apparatus that does not support new usage control information, the AV data transmission apparatus assigns different cipher type information, which is used to notify the reception apparatus, so that even the reception apparatus which cannot recognize the new usage control information can recognize its inability to perform decryption is due to new encryption performed by the AV data transmission apparatus.
摘要:
The conventional method of limiting the number of receiving apparatus has a problem that if the limited number of appliances is reduced to limit distribution to unspecified appliances outside a home, distribution to appliances in the home is limited unnecessarily. If the limited number of appliances is increased, distribution to appliances outside the home cannot be sufficiently limited. The invention provides at least one receiving apparatus, (e.g., digital television sets and PCs,) connected to a network and capable of receiving and using predetermined data, and a transmitting apparatus, (e.g., an AV server) for transmitting the data to the receiving apparatus via the network. Use of the data on the network is managed based on the transmission time required for transmission of predetermined information between the transmitting apparatus and the receiving apparatus.
摘要:
To provide a packet transmitter apparatus which can transmit contents protected by a content protection technique such as DTCP or the like, using packets such as IP packets which have become widespread. The packet transmitter apparatus includes a transmitting condition setting management unit (404) which extracts at least one of charge information, playback control information and copy control information of AV data from the inputted non-AV data or AV data and generates, based on the extracted information, encryption mode information indicating an encryption mode which becomes a condition at the time of transmitting the AV data; an encrypted data generation unit (406) which generates encrypted data by encrypting, based on the transmitting condition, the inputted AV data and adding encryption information headers based on the encryption mode information to the encrypted AV data; and a packet generation unit (403) which generates packets by adding packet headers to the generated encrypted data. The transmitting condition is to be determined as a combination of input terminal information, data format information and attribute information.
摘要:
A conventional AV data receiving device switches to a key for distribution to an outdoor device when a network environment is switched to an outdoor network environment, thus resulting in high key switching frequency. In view of this, an AV data receiving device according to the present invention determines, after switching the network environment from indoors to outdoors as a result of moving the AV data receiving device, whether or not key switching should be performed, before a command for restricting a hop count on a route from an AV data transmission device located indoors is transmitted, and performs authentication and key exchange processing for outdoor device distribution, so as to switch to the key for outdoor device distribution.
摘要:
A data transmission apparatus, a data reception apparatus, and a data transfer system prevent a case where same usable data is present in plural apparatuses at the same time and can certainly move data, in MOVE processing of the data between the data transmission apparatus and the data reception apparatus. The data transmission apparatus includes a synchronous control unit synchronizing a timing of (i) deleting or invalidating, in the data transmission apparatus, move-target data and (ii) decrypting, in the data reception apparatus, the move-target data that has been encrypted. With this, it becomes possible to prevent a case where the same usable data is present in plural apparatuses at the same time.
摘要:
A recording and reproducing apparatus (1) includes: an AV recording medium (26) recording an AV data item; a transmitting and receiving unit (21) transmitting and receiving the item and information on the item to and from an other apparatus connected to the apparatus (1) via a network; a retrieving unit (28) retrieving AV data items that indicate a same program and are recorded on the AV recording medium and in the other apparatus; a comparing unit (29) comparing image qualities of the items; and a restriction value control unit (30) moving use restriction values through the transmitting and receiving unit so that, based on a result of the comparison, (i) a use restriction value of one of the items having a lower image quality is decreased by a predetermined value and (ii) a use restriction value of an other one of the items having a higher image quality is increased by the predetermined value.
摘要:
An AV data transmission apparatus comprising: an encryption unit which encrypts AV data; an AV data transmission unit which transmits the encrypted AV data; a cipher-type-information switching unit which switches cipher type information indicating a cipher scheme used for the AV data, to other cipher type information; and a cipher-type-information transmission unit which transmits cipher type information. When transmitting AV data which is prohibited from being used in a reception apparatus that does not support new usage control information, the AV data transmission apparatus assigns different cipher type information to be notified to the reception apparatus, so that even the reception apparatus which cannot recognize the new usage control information can recognize that being unable to perform decryption is due to new encryption performed by the AV data transmission apparatus.