Abstract: In a first recording process, an end position of a kth cell (62) is aligned with an end position (P6) of a first layer recording area (43) by adjusting a recording start position (P5) of contents data (61) in an unused area (R1) in the first layer recording area (43). In a second recording process, an mth cell over the layers is divided into two cells, and the cells are recorded in an end area of the first layer recording area (43) and the head area of the second layer recording area (46), respectively.

Abstract: An image data transmission system comprises a first terminal device (110) and a second terminal device (210) included in a communication network. (I) The first terminal device (110) includes first processing means (111) for performing such a first operation upon image data as contains an adding operation to add management information containing copyright information and an embedding operation to embed a watermark on the copyright holder, thereby to generate communication data, and first communication means (112) for transmitting communication data. (II) The second terminal (21) includes second communication means (212) for receiving the communication data, and recording means (215) for recording the image data, to which either the communication data or the management information contained in the communication data is added and in which the watermark is embedded, in a recording medium.

Abstract: When VOB recording has reached the vicinity of the end position P6 of a first layer recording area (43), a cell close instruction is issued to stop encode processing for forming the next VOB to be stored. At this moment, for forming the next VOB to be recorded, content data stored in a buffer memory (18A) is used to form a VOB having, for example, a shorter length than a normal VOB. The VOB is recorded in the end position of the first layer recording area. After this, a dummy cell, having dummy data is recorded in an unrecorded area (122) of the end portion of the first recording area.

Abstract: In an information recording medium, the position of each bit in the bit arrangement (800b) consisting of a plurality of bits is related to each channel corresponding to the position of each speaker in the speaker arrangement (800a) consisting of a plurality of speakers. By the value of each bit, the channel assignment information (800I) is recorded to indicate whether audio data of a corresponding channel is present. Moreover, a plurality of audio data whose presence is indicated by the channel assignment information is recorded for each channel.

Abstract: A data recording apparatus having a main storage device, for recording information data stored in the main storage device, onto a recording medium of a removable storage device. The information data stored in the main storage device is managed in units of the recording capacity of the recording medium and is read in units of the recording capacity of the recording medium, from the main storage device, and recording of the read information data to the recording medium of the removable storage device is controlled.

Abstract: A reproducing apparatus (100) is provided with a reading device (4) for reading reproduction data and reproduction control data to control a reproduction of the reproduction data from a record disc (1), on which the reproduction data and the reproduction control data are recorded, a record medium (7, 10) having a plurality of memory areas, a data managing device (9) for storing one reproduction control data read by the reading device into one of the memory areas, and a reproducing device (8) for reproducing the reproduction data in accordance with the reproduction control data stored in the memory areas.

Abstract: A method and an apparatus are provided for reproducing data recorded in a format different from CD, such as recorded in ISO9660 format. Specifically, TOC data is generated from the information of a path table storing directory information of different stages (TOC data generating section), and information recorded in a format different from CD is reproduced in accordance with the TOC data (information reproducing section).

Abstract: An apparatus for reproducing information from a recordable optical disc having an information recording area for recording a plurality of information pieces and an index information recording area for recording index information with respect to the plurality of information pieces. The apparatus includes a driving device for rotationally driving the optical disc, a pickup device for irradiating a light beam onto the optical disc so as to read information recorded on the optical disc, a transferring device for transferring the pickup device in a radial direction of the optical disc, a memory for storing a temporary index information, and a control device for controlling the driving device, the pickup device and the transferring device and for producing the temporary index information on the basis of a read information read by the pickup device. The control device produces and stores the temporary index information into the memory when no index information is recorded on the index information recording area.

Abstract: A recordable optical disc has a plurality of test areas for effecting test recording therein with a light beam applied thereto which has an optional light intensity, a plurality of count areas for recording count information indicative of whether test recording is effected or not in the test areas, respectively, the count areas being associated respectively with the test areas, and an information recording area for recording information with a light beam applied thereto. The count areas are searched for an unrecorded count area with no count information recorded therein in response to a predetermined command. If at least one unrecorded count area is located, count information is recorded in the located count area. Then, the test areas are searched for one test area which is associated with the located count area in which the count information is recorded.

Abstract: Recorded information is reproduced from a recordable optical disc with a light beam applied from an optical pickup to the recordable optical disc. The recordable optical disc has a program area for recording main information, a PMA area for recording recording history information relative to main information which is in the process of being recorded in the program area, and a lead-in area for recording, as index information, recording history information relative to main information which has fully been recorded in the program area.

Abstract: An apparatus for controlling an emission power of a laser diode is used in an apparatus for recording and reproducing information of an optical disk, which has a power calibration area and to which a disk discrimination code is recorded.

Abstract: A video tape recording and reproducing device and a related method having a recording and a reproducing mode including a plurality of tuners for concomitantly receiving a plurality of television programs and generating a plurality of respective recording signals when in the recording mode, mixing means for producing a mixed recording signal responsive to the plurality of generated recording signals, recording means for recording the mixed recording signal on a video tape, reading means for reading the mixed recording signal from the video tape when in the reproducing mode, separating means for reproducing a selected recording signal from the mixed recording signal, and means for outputting the reproduced selected recording signal to an external device for producing the corresponding television program.