Abstract: An information recording medium includes: record information pieces logically independent of each other and constituting a hierarchical structure of hierarchical layers; layer information pieces for specifying one of the hierarchical layer; kind information pieces for indicating kinds of information relating to the record information pieces; a text group including layer related texts and record information related texts successively arranged in a mixed manner; text arrangement information pieces corresponding to the text group and arranged in pair with one of the layer information piece and the kind information piece corresponding to the text, the text arrangement information piece indicating a position of the text within the text group.

Abstract: An information recording medium is reproduced by an information reproducing apparatus for controlling a reproduction of record information based on a search control information recorded together with the record information. The medium includes: processed record information including a plurality of information units generated by applying a signal processing onto the record information; a search control information for searching, out of the processed record information, a reproduction record unit which is a record unit including the record information to be reproduced. The search control information is multiplexed with the processed record information. The reproduction record unit includes an initial one of the processed record information constituting the information units included in the reproduction record unit which is recorded at a recording position on a recording medium corresponding to a head portion of an area where the processed record information in the reproduction record unit is recorded.

Abstract: There is provided an information record medium on which information is recorded so as to permit, even when a reading-out error occurs, subsequent reproduction, an apparatus for recording the same and an apparatus for reproducing the same. According to the recording apparatus of the present invention, there are recorded, on the information record medium of the present invention, data groups provided with data units having at least one of video information and audio information, and reproduction control information having the first identification information for identifying each data group; and the second identification information for identifying the data group to which each data unit belongs, is recorded in each data unit.

Abstract: An information recording apparatus (SS1) is provided with: a quantize device (72, 72B) for quantizing record information by 8.times.n bits; a divide device (72, 72D) for dividing the quantized record information quantized at one quantization timing, into (i) high order bit quantized record information (66), which is a portion at high order 8.times.

Abstract: An information recording apparatus (SS1) is provided with: a signal process device (72) for applying a predetermined signal process to record information (R), which is to be recorded onto an information record medium (1: DVD) and is inputted externally, to output processed record information (Sr), and for dividing control information (Si), which corresponds to the record information and are inputted externally, into search control information(Sdsi, DSI), which is information to search a record position of the record information to be reproduced at a time of reproducing the record information, and reproduction display control information (Spci, PCI), which is information to control a reproduced display of the record information at the time of reproducing the record information, to output the search control information and the reproduction display control information; a multiplex device (75, 76) for multiplexing the processed record information, the search control information and the reproduction display contro

Abstract: An information recording medium includes a plurality of first information pieces each of which is reproduced successively in time by a reproducing apparatus; a plurality of second information pieces each of which is successively positioned on the information recording medium, one or more of the second information piece constituting the first information piece; a plurality of third information pieces each of which is individually reproducible and is a unit for jump reproduction by the reproducing apparatus, one or more of the third information piece constituting the second information pieces; at least one related information piece included in the third information piece and relating to a reproduction order and a reproduction method of the second information pieces; at least one reproduction control information piece referred to by the reproducing apparatus and relating to a reproduction order and a reproduction method of the first information pieces.

Abstract: An information record medium (1: DVD) has a record track (1a) to be reproduced by an information reproducing apparatus (S2). The information reproducing apparatus is provided with a read device (80) and reproduces audio information by a predetermined audio frame unit while relatively moving the read device along the record track recorded with at least the audio information by the audio frame unit. A plurality of audio packets (43, 202) are arranged along the record track, in each of which audio information pieces (207) constructing the audio information sampled by a predetermined sampling frequency and audio control information (203) for controlling a reproduction of the audio information pieces by the information reproducing apparatus are respectively recorded.

Abstract: An information recording medium is reproduced by an information reproducing apparatus for controlling a reproduction of record information based on a search control information recorded together with the record information, The medium includes: processed record information including a plurality of information units generated by applying a signal processing onto the record information; a search control information for searching, out of the processed record information, a reproduction record unit which is a record unit including the record information to be reproduced. The search control information is multiplexed with the processed record information. The reproduction record unit includes an initial one of the processed record information constituting the information units included in the reproduction record unit which is recorded at a recording position on a recording medium corresponding to a head portion of an area where the processed record information in the reproduction record unit is recorded.

Abstract: An information recording medium is recorded with a plurality of data groups, each including at least one of video information and audio information and a reproduction permission level by which a reproduction of at least one of the video information and the audio information is permitted; and a reproduction management information including the reproduction permission range information for prescribing the range of the reproduction permission level for the data group which reproduction is permitted. When the reproduction permission level and the reproduction management information are selected, the range of the reproduction permission level of the data groups which reproduction are permitted is detected on the basis of the reproduction permission level selected. Then, the data group is reproduced when the reproduction permission level of the selected data group is included in the range of the reproduction permission level detected.

Abstract: An information recording medium includes: record information pieces logically independent of each other and constituting a hierarchical structure of hierarchical layers; layer information pieces for specifying one of the hierarchical layer; kind information pieces for indicating kinds of information relating to the record information pieces; a text group including layer related texts and record information related texts successively arranged in a mixed manner; text arrangement information pieces corresponding to the text group and arranged in pair with one of the layer information piece and the kind information piece corresponding to the text, the text arrangement information piece indicating a position of the text within the text group.

Abstract: An information recording apparatus (SS1) is provided with: a signal process device (72, 72A, 72B) for applying a predetermined signal process to record information to be recorded onto an information record medium (1: DVD) to thereby generate processed record information (Srv, Sra) comprising a plurality of information units (AAU, AF), which are set in advance; a divide device (72, 72C, 72D) for dividing the processed record information by each record unit (APT), which includes one or more information units and which is set in advance on the basis of the predetermined signal process; a multiplex device (72, 72E, 72F) for setting a start position of one or more information units within each record unit, on the basis of control information (Si) inputted from the external (ST, 71) to control a reproduction of the record information, generating start position information (200) indicating the start position and multiplexing the start position information with the processed record information for each record unit, t

Abstract: A recording apparatus for recording record information onto a record medium to be reproduced by a reproducing apparatus, is provided with: a process device for dividing the record information into a plurality of partial record informations on the basis of material content information, which indicates a material content of the record information and is given from the external; a controller for generating reproduction control information to control the reproducing apparatus to reproduce the partial record informations in a predetermined order, which is set in advance or which is based on a condition given to the reproducing apparatus from the external at a time of reproduction; and a recording device for recording the partial record informations and the reproduction control information onto the record medium.

Abstract: An information recording apparatus is provided with a signal process device for generating and outputting content information including (i) identification information to identify each of partial record informations constructing whole record information to be recorded onto an information record medium and to indicate content of each of the partial record informations, and (ii) start position information indicating a start position on the information record medium of each of the partial record informations corresponding to the identification information, on the basis of control information inputted from the external to control a reproduction of the record information. The information recording apparatus is also provided with: a multiplex device for multiplexing the record information and the content information, to thereby generate and output multiplexed record information; and a record device for recording the multiplexed record information onto the information record medium.

Abstract: In a recording medium such as a DVD, various information such as video and audio information is recorded in a form of a plurality of recorded information pieces. Further, control information pieces prescribe the manner of reproducing the recorded information pieces. Copy information indicating whether or not the recorded information pieces are copy-prohibited is prepared and recorded for each of the recorded information pieces. In addition, aggregate copy information pieces indicating whether or not the recorded information pieces under the control by the control information piece are copy-prohibited are recorded. In accordance with the copy information and the aggregate copy information pieces, a copying system performs accurate copy management.

Abstract: The disc player accommodates a plurality of CD-I discs, to each of which program data required to reproduce information on the disc is recorded at a predetermined area thereof. The disc player has a disc changer to selectively supply each CD-I disc to a reproducing unit. The method of reproducing information of the disc player includes the steps of: reading the program data from the CD-I disc, and writing the read program data into a memory, with respect to all of the CD-I discs accommodated in the disc changer; and performing a reproduction operation with reference to the program data written in the memory at the time of the reproduction operation of the information on the CD-I disc.

Abstract: A track search controller has three two-segment photodetectors, three subtracters associated respectively with the two-segment photodetectors, a processing circuit, and a servo control cirucit. Each of the photodetectors produces two output signals based on a light beam reflected from an optical disk. Each of the subtracters produces a differential output signal representing the difference between the output signals from the associated photodetector. The processing circuit generates an actuator position signal from the output signals from the subtracters. The actuator position signal contains a component indicative of a deviation of the actuator due to its vibration. The servo control circuit controls an actuator, which actuates a laser beam source, so that the actuator position signal will be of a constant value.

Abstract: Method and apparatus of recording and reproducing picture information on a recording medium. In addition to a coded information signal, subcodes together with identification codes for identifying the coding system of the subcodes are recorded in a first recording area of a recording medium and the identification codes and content discrimination codes for indicating contents of information included in the subcode using the coding system indicated by the identification code are recorded in a second recording area of the recording medium. It is further characterized that the identification code and the content discrimination information recorded in the second recording area are displayed at the time of the playback of the recording medium.

Abstract: An apparatus detects a position of a light spot necessary for the tracking control and the track jumping control at the time of reproducing an optical disk. Three light beams are used to provide three push-pull outputs from the respective light beams, thus making it possible to discriminate whether or not the light spot is in the on-track state on the basis of a value obtained as the result of a predetermined calculation of the respective push-pull outputs. In this apparatus, there is employed an arrangement such that in the case where the central light spot of the three light spots exists on the axis of one recording track, other two preceding and succeeding light spots are not projected onto the adjacent tracks.

Abstract: A light spot position detector reliably effects spot-on-track detection even if the reflectivities of recording tracks and intertrack areas of an optical disk are substantially the same as each other. A tracking error signal used to control a scanning spot applied to the recording tracks on the optical disk is produced by mixing light spot position signals that are generated according to the three beam method and the push pull method from light beams reflected from light spots on the signal recording surface of the optical disk.

Abstract: A disc data display unit provided separately from a disc player. In the display unit is, data inherent to a disc loaded in the disc player and data arbitrarily provided by the operator are stored in a memory medium to form an electronic file, so that the data on the disk will be displayed when the disc player is operated.