U.S. Philips Corporation

Koninklijke Philips Corporation N.v.

U.S. Phillips Corporation

Erik C Schylander

Johannes Jan Mons

Jozef M Timmermans

Adrianus H Dieleman

Gerrit D Westerhout

Jos G Schepers

Bjorn Bluthgen

Jozef M K Timmermans

A record carrier () of the invention stores at least video-related user data and control data in digital form. The control data enables playback control of the user data, which control data comprises at least play control data which defines user data items which are playable, at least selection control data for enabling the user to select and control reproduction of user data and at least variable control data for operating on user and system variables. The record carrier () is characterized in that the variable control data comprises at least one instruction for a conditional arithmetical operation.

Record carrier, apparatus and method for storing video having playback control using conditional arithmetic operation

Record carrier, apparatus and method

An information volume is recorded in sectors of a track of a record carrier in compliance with the CD-ROM XA standard. The information volume includes data files, control information for controlling the search for information in the recorded information volume, and a file location table with file location entries containing an identification and an address of the data files. The file location table has a size of at most one sector. This method of recording enables a relatively simple microprocessor to retrieve the recorded information, while maintaining compatibility with the CD-ROM XA standard.

Record carrier, method of recording information on a record carrier, recording apparatus and playback device

A record carrier on which information is recorded in the form of first variations caused by the presence or absence of information marks along a recording track, such variations representing an information signal. The record carrier also exhibits second variations in the form of changes in the position of the information marks in a direction transversed to the track direction. The second variations having a frequency spectrum substantially entirely outside the frequency spectrum of the first variations. The second variations are detectable by the same playback transducer which detects the first variations, and the presence of the second variations may be necessary to enable the transducer to detect the first variations.

Record carrier with variations of different physical parameters thereof in different frequency bands during recording

Playback apparatus for a record carrier on which information is recorded in the form of variations of a first physical parameter. The playback apparatus scans the record carrier by means of a transducer which is responsive to the variations of the first physical parameter. An information recovery circuit recovers the information from a detection signal produced by the transducer. The record carrier also exhibits a variation of a second physical parameter, which differs from the first physical parameter but is of a type which is detectable by the same transducer. A detection circuit detects the presence of the second variation on the basis of a further detection signal produced by the transducer. A circuit controlled by the detection circuit enables the information recovery circuit in the event that the presence of the second variations is detected. Since copying recorders of the usual type only copy variations of the first physical parameter, representing the recorded information, and do not copy variations of the second physical parameter, such copiers cannot copy the information recorded on the described record carrier.

Playback apparatus for a record carrier providing physical copy protection

An information system including a record carrier and a playback apparatus. Information has been recorded on the record carrier in the form of variations of a first physical parameter. The playback apparatus scans the record carrier by means of a transducer which is responsive to the variations of the first physical parameter. An information recovering circuit recovers the information from a detection signal received from the transducer. The record carrier exhibits second variations of a second physical parameter, which differs from the first physical parameter but which second variations are of a type that are detectable by the transducer. A detection circuit detects the presence of the second variations on the basis of a detection signal received from the transducer. A circuit responsive to the detection circuit enables the information recovering circuit when the presence of the second variations is detected causing it to recover the information.

System and apparatus for recovering information from a record carrier

A record carrier having at least two information volumes recorded thereon. The first volume includes control information for use in searching for information included in that volume. In one embodiment, the first volume further includes a reference to the control information included therein in a predetermined address range, and the second volume includes substitute control information for use in searching for information in the first and second volumes and a reference to the substitute control information. The reference to the substitute control information is accommodated in a recoverable substitute address range. A reading apparatus for such a record carrier transforms a request for access to sectors in the predetermined address range of the first volume into a request for access to sectors in the substitute address range of the second volume. A method and apparatus for recording information on such a record carrier is also disclosed. In other embodiments, the first and second volumes each include a lead-out signal denoting the end of the volume it is included in, and/or the second volume includes additional control information for searching for information included in the second volume (and, possibly, the first volume). If appropriate, the lead-out signal of the second information volume references (indirectly) the additional control information.

Record carrier having at least two information volumes

An information system including a record carrier and a playback apparatus. Information has been recorded on the record carrier in the form of variations of a first physical parameter. The playback apparatus scans the record carrier by means of a transducer which is responsive to the variations of the first physical parameter. An information recovering circuit recovers the information from a detection signal received from the transducer. The record carrier also exhibits second variations of a second physical parameter, which differs from the first physical parameter, but which second variations are of a type that are detectable by the transducer. A detection circuit detects the presence of the second variations or a predetermined property thereof (e.g., that they exhibit a predetermined variation pattern) on the basis of the detection signal received from the transducer. A circuit responsive to the detection circuit enables the information recovering circuit, when the presence of the second variations or a predetermined property of the second variations is detected, causing it to recover the information.

System and apparatus for recovering information from a record currier

A record carrier, a playback apparatus and a system including the record carrier and the playback apparatus. Information has been recorded on the record carrier in the form of variations of a first physical parameter. The playback apparatus scans the record carrier by means of a transducer which is responsive to the variations of the first physical parameter. An information recovering circuit recovers the information from a detection signal received from the transducer. The record carrier exhibits second variations of a second physical parameter, which differs from the first physical parameter, but which second variations are of a type that are detectable by the transducer. A detection circuit detects the presence of a predetermined property of the second variations (e.g., that the second variations exhibit a modulation pattern representing a code) on the basis of a detection signal received from the transducer. A circuit responsive to the detection circuit enables the information recovering circuit when the presence of the predetermined property of the second variations is detected, causing it to recover the information.

Record carrier having first variations of a first physical parameter

A record carrier on which a first information volume and an additional information volume are recorded. The first information volume includes audio information, preferably recorded in accordance with the Compact Disc Digital Audio standard. The additional volume includes additional non-audio information related to the audio information recorded in the first information volume. The additional volume also includes control information for searching for information in both the first and the second information volumes. A dedicated data reading apparatus for such a record carrier firstly accesses the additional information volume. On the basis of the control information, the dedicate data reading apparatus can also access the audio information in the first information volume. An audio reading apparatus which can not handle the additional non-audio information automatically accesses the first information volume.

Record carrier having an information volume including audio information

A record carrier having addressable information included thereon, including at least one track having audio information and additional non-audio information (e.g., CD-I information), and apparatus for reading and/or reproducing certain of the information included in such a track. That track includes (a) a prepart having (i) the additional non-audio information and (ii) pause information (which results in reproduction of silence) and (b) an audio part having the audio information. The additional non-audio information is located before the pause information, and the prepart is located before the audio part. The apparatus can determine whether a track of a record carrier having audio information included therein also includes additional non-audio information and/or can prohibit reproduction of the additional non-audio information.

Record carrier having a track including audio information and additional

A record carrier (21;70) is disclosed on which a first information volume (VOL1) is recorded in sectors of a track (10), the sector positions on the track being denoted by logic sector address numbers LSN. The recorded information volume (VOL1) comprises control information (PT;DF) for use in controlling the search for information therein, the control information being arranged according to a predetermined format. A reference to the control information is accommodated in track sectors (VD1) in a predetermined address range. Following the first information volume at least a next information volume (VOL2) is recorded in the track (10), each next information volume comprising substitute reference information for use in controlling the search for information both in that information volume and in the previously recorded information volumes. The substitute reference information is accommodated in track sectors (VD2) in a recoverable substitute address range which is preferably the same as the corresponding address range in the first recorded information volume. Reading apparatus for such record carrier transforms a request for access to sectors (VD1) in the address range of the first information volume (VOL1) into a request for access to sectors (VD2) in the substitute address range of the last-recorded information volume. A method and apparatus for recording information in the predetermined format is also disclosed.

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Eindhoven, Netherlands

Erik C Schylander