Abstract: A video and sound signal recorded on an optical disk is reproduced and when a read error of the video and sound signal occurs during the reproduction of the optical disk, reading of the video and sound signal is retried and when a read error of the video and sound signal occurs during the retry of the reading of the video and sound signal, a rotational speed of the optical disk is increased to retry reading of the video and sound signal and when the video and sound signal can be read by the retry of the reading of the video and sound signal, the rotational speed of the optical disk is returned to the original rotational speed and the video and sound signal recorded on the optical disk is reproduced.

Abstract: A record/playback apparatus includes a recording unit that records a televised program being received by a receiving unit to a disk-shaped recording medium such as a DVD or HD. Also, a commercial message detecting unit detects a switch from main program to commercial message and a switch from commercial message to main program. The recording unit records the main program and commercial messages inserted in the main program to the recording medium under separate titles, based on a result of the detection by the commercial message detecting unit.

Abstract: A recording apparatus includes a recording unit that records a televised program being received by a receiving unit to a disk-shaped recording medium. The recording apparatus also includes a commercial message detecting unit that detects a switch from main program to commercial message and a switch from commercial message to main program when the recording unit is recording the program. The recording unit records the program to the recording medium with chapter breaks set at first time intervals when commercial messages inserted in the main program are being received by the receiving unit, and set at second time intervals when the main program is being received by the receiving unit.

Abstract: The present invention provides an information reproducing/recording apparatus capable of executing tracking servo normally in short time at the time of loading an information recording medium. At the time of executing a tracking servo process on a BD (Blu-ray Disc)-R capable of recording information selectively on a land track or a groove track during loading of the BD-R, the polarity of a tracking error signal adapted to trace of the land or the groove is temporarily determined on the basis of statistical information indicative of a result of a statistic taken to see which one of the BD-R that records information on the land track and the BD-R that records information on the groove track is more frequently used. On the basis of the tracking error signal of the polarity, an optical pickup is driven to execute tracking servo.

Abstract: Before erasure of data, an optical head (6) reads file management data which manages user data from a file management data area “A” of an optical disk (2). A control unit (3) drives an optical head (6) to write the information into a specific area on the optical disc (2) to save the file management data. After saving the file management data, the optical head (6) records the data for erasing the file management data into the file management data area “A”. According to a signal from the data erasure instruction cancel key or button (42, 52), after erasure of the file management data, the optical head (6) reads out the saved file management data from the specific area of the optical disc (2), and rewrite the file management data into the file management data area “A”. Thus, even after data erasure of data, the user can use the data again before erasure by using the saved file management data.

Abstract: Before erasure of data, an optical head (6) reads file management data which manages user data from a file management data area “A” of an optical disk (2). A control unit (3) writes the information to a hard disc drive apparatus (10) and/or RAM (9) to save the file management data. After saving of the file management data, the optical head (6) writes the data for erasing the file management data into the file management data area “A”. According to a signal from the data erasure cancel instruction key or button (42, 52), after erasure of the data, the control unit (3) reads the saved file management data from the hard disc drive apparatus (10) and/or RAM (9). The optical head (6) writes the file management data into the file management data area “A” of the optical disc (2) so as to be returned. Thus, even after data erasure processing, the user use the user data again before erasure by using the file management data.

Abstract: A recording/reproduction apparatus recording/reproducing audio-visual data from a recording medium includes; a reception unit a reception unit receiving, from a server via a network, distribution information for audio data that is not recorded an optical disk; a display unit displaying the distribution information for the audio data that is received by the reception unit; a transmission request unit transmitting an ID for the optical disk to the server via the network when an instruction is issued to download the audio data for the distribution information that is displayed by the display unit; and a downloading unit, for downloading the audio data that are transmitted, via the server, by the network, and for saving the audio data on a recording medium. The transmission request unit requests that the server transmit the audio data for the distribution information.

Abstract: An optical disc apparatus has a structure including: a storage medium; a readout portion that reads out data from at least one Defect Management Area (DMA) or at least one group of the DMAs which is included in a Blu-ray Disc REwritable (BD-RE); a storing portion that stores one of the data which is read out by the readout portion, in the storage medium; an erasing portion that erases the data which is read out by the readout portion, from the at least one DMA or the at least one group of the DMAs; and a recording portion that records the data which is stored in the storage medium, in at least one DMA or at least one group of the DMAs which is included in BD-RE.

Abstract: The present invention provides an information reproducing/recording apparatus capable of executing tracking servo normally in short time at the time of loading an information recording medium. At the time of executing a tracking servo process on a BD (Blu-ray Disc)-R capable of recording information selectively on a land track or a groove track during loading of the BD-R, the polarity of a tracking error signal adapted to trace of the land or the groove is temporarily determined on the basis of statistical information indicative of a result of a statistic taken to see which one of the BD-R that records information on the land track and the BD-R that records information on the groove track is more frequently used. On the basis of the tracking error signal of the polarity, an optical pickup is driven to execute tracking servo.

Abstract: The main controller makes the designated non-volatile memory store the restart point equivalent to the preceding stop point, and in starting reproduction processing, the main controller reads out the restart point from the designated non-volatile memory and starts reproducing video images from the restart point. Thus, the main controller can restart next reproduction from the preceding stop point, even when once a user takes out an optical disc from an optical disc apparatus, and loads the optical disc apparatus with the same optical disc again, or even when a user transfers the optical disc from one optical disc apparatus to another optical disc apparatus, whether or not the optical disc is rewritable.

Abstract: In an optical disk recorder (1), when a user instruct to format an optical disc (2), a main control unit 3 reads out file management data from a file management data area of the optical disc (2), and writes the read file management data at a specific area of the optical disc (2) through an optical head (6) so as to save the read file management data. When the user instruct to cancel the formatting of the optical disc (2), the main control unit (3) reads out the saved file management data from the optical disc (2) and rewrite the saved file management data into the original file management data area again. Thereby, the user can use the user data recorded before the formatting of the optical disc (2).

Abstract: Before erasure of data, an optical head (6) reads file management data which manages user data from a file management data area “A” of an optical disk (2). A control unit (3) writes the information to a hard disc drive apparatus (10) and/or RAM (9) to save the file management data. After saving of the file management data, the optical head (6) writes the data for erasing the file management data into the file management data area “A”. According to a signal from the data erasure cancel instruction key or button (42, 52), after erasure of the data, the control unit (3) reads the saved file management data from the hard disc drive apparatus (10) and/or RAM (9). The optical head (6) writes the file management data into the file management data area “A” of the optical disc (2) so as to be returned. Thus, even after data erasure processing, the user use the user data again before erasure by using the file management data.

Abstract: Before erasure of data, an optical head (6) reads file management data which manages user data from a file management data area “A” of an optical disk (2). A control unit (3) drives an optical head (6) to write the information into a specific area on the optical disc (2) to save the file management data. After saving the file management data, the optical head (6) records the data for erasing the file management data into the file management data area “A”. According to a signal from the data erasure instruction cancel key or button (42, 52), after erasure of the file management data, the optical head (6) reads out the saved file management data from the specific area of the optical disc (2), and rewrite the file management data into the file management data area “A”. Thus, even after data erasure of data, the user can use the data again before erasure by using the saved file management data.

Abstract: A record/playback apparatus includes a recording unit that records a televised program being received by a receiving unit to a disk-shaped recording medium such as a DVD or HD. Also, a commercial message detecting unit detects a switch from main program to commercial message and a switch from commercial message to main program. The recording unit records the main program and commercial messages inserted in the main program to the recording medium under separate titles, based on a result of the detection by the commercial message detecting unit.

Abstract: A recording apparatus includes a recording unit that records a televised program being received by a receiving unit to a disk-shaped recording medium. The recording apparatus also includes a commercial message detecting unit that detects a switch from main program to commercial message and a switch from commercial message to main program when the recording unit is recording the program. The recording unit records the program to the recording medium with chapter breaks set at first time intervals when commercial messages inserted in the main program are being received by the receiving unit, and set at second time intervals when the main program is being received by the receiving unit.

Abstract: A recording/reproduction apparatus recording/reproducing audio-visual data from a recording medium includes; a reception unit a reception unit receiving, from a server via a network, distribution information for audio data that is not recorded an optical disk; a display unit displaying the distribution information for the audio data that is received by the reception unit; a transmission request unit transmitting an ID for the optical disk to the server via the network when an instruction is issued to download the audio data for the distribution information that is displayed by the display unit; and a downloading unit, for downloading the audio data that are transmitted, via the server, by the network, and for saving the audio data on a recording medium. The transmission request unit requests that the server transmit the audio data for the distribution information.

Abstract: For an unrecorded disk, the tilt amount where the amplitude of a tracking error signal is maximum is detected by changing the tilt amount of the optical pickup in a tracking OFF state at plural preset positions in the radial direction of the optical disk, or for a recorded disk, the tilt amount where the amplitude of the RF signal is maximum is detected by changing the tilt amount of the optical pickup in a tracking ON state at plural preset positions in the radial direction of the optical disk, and the tilt amount is corrected, based on the detected tilt amount at the recording/reproduction time of the optical disk. Also, if the difference between the maximum and minimum amplitudes of the tracking error signal and the RF signal is small, the tracking error signal and the RF signal are amplified to a predetermined signal level.

Abstract: Prior to a start of tilt regulation measurement and when a discriminated region is a mixed region, a photodetector is moved by a predetermined amount. And then, when the tilt regulation measurement is started, an objective lens of the photodetector is tilted to an inner end and an outer end to discriminate the region. When the region is a mixed region or states of the inner side and the outer side of the region are different as in a case where a recorded region and a non-recorded region coexist, the photodetector is moved by a predetermined amount in a similar manner to the above mentioned. The tilt regulation of the photodetector is performed on a basis of an RF signal and/or a tracking error signal read out after the photodetector is moved to a region other than the mixed region.

Abstract: A video and sound signal recorded on an optical disk is reproduced and when a read error of the video and sound signal occurs during the reproduction of the optical disk, reading of the video and sound signal is retried and when a read error of the video and sound signal occurs during the retry of the reading of the video and sound signal, a rotational speed of the optical disk is increased to retry reading of the video and sound signal and when the video and sound signal can be read by the retry of the reading of the video and sound signal, the rotational speed of the optical disk is returned to the original rotational speed and the video and sound signal recorded on the optical disk is reproduced.

Abstract: The main controller makes the designated non-volatile memory store the restart point equivalent to the preceding stop point, and in starting reproduction processing, the main controller reads out the restart point from the designated non-volatile memory and starts reproducing video images from the restart point.