摘要:
In a recording and reproducing apparatus for a disc-shaped recording medium, and a defect substitution method for a disc-shaped recording medium, whether reproduction of recorded data is good is determined by sector unit and not by product code unit, defective sector discrimination is performed by sector unit, and only sectors determined defective are alternately recorded, when using a recording format in which data that is error detection and correction coded with a product code is segmented and recorded to a plurality of sectors.
摘要:
A recording and playback apparatus can continue the playback of a content with playback time limit, even after the playback time limit expires during the playback of the content, and does not play back the content even though an instruction receiver receives a playback instruction when the playback of the content is stopped after the playback time limit of the content expires during the playback of the content with the playback time limit. The recording and playback apparatus outputs the warning information, when the instruction receiver receives the stop instruction after the playback time limit of the content expires during the playback of the content.
摘要:
A data processing device connects to a first display and operates in a power state including a power-off state, a recording standby state, and a power-on state. A second display displays an operation state of the data processing device. A power controller supplies electric power to a driver in the power-on state and the recording standby state, and stops supplying the electric power in the power-off state. The second display indicates that power is ON in the power-on state, and indicates that the power is OFF in the recording standby state and the power-off state. The power controller switches the power state from the recording standby state to the power-on state when a signal instructing start of a recording operation is received from the first display and the power state is the recording standby state.
摘要:
A communication apparatus establishes a one-way data connection and a connection to a network in which messages are transferred in two ways, and includes: a one-way data connection status detecting unit which detects a connection validating request indicating a communication apparatus on a data reception side that data transmission, utilizing the one-way data connection, is possible and a connection invalidating request indicating that the data transmission is impossible, both of which are outputted from the communication apparatus on the data reception side; an apparatus address obtaining unit which obtains an apparatus address with a message via the network when a change from the connection invalidating request to the connection validating request is detected; an address holding unit which holds the apparatus address; and a message transmission continuing unit which responds to the message received via the network based on the apparatus address held by the address holding unit regardless of whether or not the connection invalidating request is detected.
摘要:
A data processing device comprising: a receiving unit operable to receive a control signal from a display device externally connected; a signal processing unit for operable to generate video data and/or audio data; a drive unit operable to store the data generated by the signal processing unit to a recording medium; a signal output unit operable to output a video signal and/or audio signal; and a control unit operable to control operation of the signal processing unit, the drive unit, and the signal output unit; the data processing device further comprising: a power control unit operable to control electric power supplied to the signal processing unit, the drive unit, the signal output unit, and the control unit, wherein the power control unit can control supplying of the electric power in three power states including at least a power-off state, a recording standby state, a power-on state, and wherein the power control unit stops the supplying of the electric power to at least the drive unit in the power-off state, supplies the electric power to at least the drive unit and the control unit in the recording standby state, and supplies the electric power to the signal processing unit, the drive unit, the signal output unit, and the control unit in the power-on state, and wherein the signal output unit stops outputting of the video signal and/or audio signal in the power-off state and the recording standby state, and outputs the video signal and/or audio signal in the power-on state, and wherein the power control unit switches the power state from the power-off state to the recording standby state when the receiving unit receives a signal indicating that the display device is turned on, in the power-off state, and wherein the power control unit switches the power state from the recording standby state to the power-on state when the receiving unit receives a signal instructing start of a recording operation or a power state confirmation signal inquiring the power state of the data processing device from the display device, in the recording standby state.
摘要:
There are provided a display device, an external connection device and a screen control method which enable hiding GUIs of the external connection device and displaying GUIs of the display device by operating a remote controller dedicated to the display device.When an operation code for restoring the GUI display is inputted from a remote controller 121 dedicated to a display device 100 to a user operation input unit 103 while a display unit 107 of the display device 100 displays a GUI of an external connection device 200 after displaying a GUI of the display device 100, a control unit 101 controls a data processing unit 106 to create a GUI in order to display a GUI of the display device 100 on the display unit 107.
摘要:
An encryption device, a decrypting device, a secret key generation device, a copyright protection system and a cipher communication device including: a CRL memory unit memorizing a CRL, a device key ring memory unit memorizing a specific device key KD_A in every IC card used in a decrypting device, a content key memory unit memorizing a content key Kc, which is a secret key for decrypting content, and a hashing function processing unit calculating a hashing value of the CRL memorized in the CRL memory unit. The devices further including an Ex-OR unit carrying out an exclusive OR between the hashing value and the device key KD_A memorized in the device key ring memory unit, and an Enc unit encrypting the content key Kc memorized in the content key memory unit using an output value of an Ex-OR unit.
摘要:
An optical disk according to the present invention is the optical disk on which secret information on unique information given to a specific optical disk manufacturer or a specific optical disk and information recorded on an infringement disk list of identifying an illegitimate optical disk manufacturer or an illegitimate optical disk are recorded in advance, and the optical disk has an area in which reproduction-only encrypted data encrypted based on the secret information and the information on the infringement disk list is recorded in advance or an area capable of recording the encrypted data to be encrypted based on the secret information and the information on the infringement disk list.
摘要:
An optical disc has a plurality of sectors, where each of the plurality of sectors includes a plurality of frames. A sub information bit value of “0” or “1” is assigned to the plurality of frames constituting a sector, excluding the first and last frames. Edge positions are displaced so that leading/lagging errors appear in accordance with a certain rule when data fields of the frames to which the sub information bit value “1” is assigned are read. Edge positions are displaced so that leading/lagging errors appear in accordance with a reversal of the certain rule when data fields of the frames to which the sub information bit value “0” is assigned are read.
摘要:
A recording type optical disk on which data is recordable includes a data recording and reproducing area for recording data therein and reproducing data therefrom, and a read-only disk identification information area for recording disk identification information for identifying the optical disk therein. In the optical disk, the disk identification information is formed by removing a reflection film that is formed on the optical disk in a strip shape. The disk identification information includes an inherent disk identifier for each optical disk, and the data recording and reproducing area includes an area for recording encrypted data therein. The encrypted data is encrypted by using information including the disk identification information for identifying the optical disk as a key.