Abstract: An apparatus for recording and/or reproducing a control signal in which a start point from which a control signal such as a program start identifying signal is recorded in a sub-code area is set by the use of an address signal written in a PCM area so that the positional information of a recording medium can be exactly detected and thereby it is assured that the control signal can be recorded in a desired position.

Abstract: A disc player for reproducing program information recorded on a disc in a plurality of partitions together with address data for each partition includes a program selection control for selecting one of the partitions, representing a particular program. A program selecting key causes a pick-up to be positioned at the address identifying the start of a selected partition the same as or reversed from a present partition. Multiple manipulations of the program selecting key cause the selection of a partition multiply reversed from the present partition. A second program selecting key causes the selection of a partition advanced from the present partition.

Abstract: Apparatus including a rotary head accurately reproduces a digital signal recorded on a tape, even when the tape runs at high speed. Transitions of a reproduced signal are detected, intervals corresponding to the transitions are counted on the basis of a predetermined reference signal, and the rotation of the rotary head is controlled in response to the counted value so that the relative speed between the rotary head and the tape is held constant, notwithstanding changes in the absolute speed of the tape, as in the fast-forward mode.

Abstract: An apparatus for reproducing digital signals recorded on a magnetic or other recording tape includes a servo mechanism which is effective, when the tape is transported at a high speed in either a fast-forward or rewind mode, to maintain a relative speed between the tape and a rotary head that is substantially the same as that in the normal playback mode. Moreover, in the rewind mode, the rotary head is rotated in the direction opposite to that in the normal playback mode, while the absolute value of the relative speed remains the same as that in the normal playback mode. Further, the digital signals reproduced by the rotary head in the rewind mode have their sequential order reversed.

Abstract: A disc player, for reproducing program information from a disc on which the information is recorded as digital program information data accompanied by digital address data, comprises an optical reader for reading program information data and address data from the disc, such reader being selectively operable in a searching mode and in a playback mode, processing circuitry supplied with program information data to produce program information from the program information data, a detecting means that compares designated address data identifying desired program information with the reproduced address data in the output of the reader and system controlling means for controlling the reader to continue the searching mode until the reproduced address data match the designated address data, at which time the system controlling means operates the reader in its playback mode to read from the disc the program information data identified by the designated address data.

Abstract: In a recording/reproducing apparatus, a program identifying number is recorded in a beginning portion of each of a sequence of programs recorded on a record medium during a first recording operation, and a program start signal is recorded in a beginning portion of each program recorded in a second recording operation and thereafter. Subsequently, in a renumbering operation, each of the recorded program identifying numbers and/or program start signals is detected, with high speed movement of the record medium therebetween, and the previously existing recorded program identifying numbers and/or program start signals are replaced by a properly ordered sequence of program identifying numbers on the record medium.

Abstract: Apparatus for reproducing digital signals recorded on a recording tape comprises a rotary drum about which a recording tape can be trained, a rotary head mounted in the drum, a transport mechanism for transporting the tape over the drum and rotating the head so that a relative speed is established between the head and the tape and the head scans the tape and generates reproduced digital signals in response to digital signals recorded on the tape, and a mode-control mechanism for controlling the transport mechanism so that the tape is transported over the drum at an absolute tape speed that can be varied. A servomechanism responsive to variations in the absolute tape speed adjusts the transport mechanism so that the head acquires a rotary speed such that the relative speed is restored to and maintained at a substantially constant value, not withstanding changes in the absolute tape speed effected under the control of the mode-control mechanism.

Abstract: A disc player, for reproducing program information from a disc on which the information is recorded as digital program information data accompanied by digital address data, comprises an optical reader for reading program information data and address data from the disc, such reader being selectively operable in a searching mode and in a playback mode, processing circuitry supplied with program information data to produce program information from the program information data, a detecting means that compares designated address data identifying desired program information with the reproduced address data in the output of the reader and system controlling means for controlling the reader to continue the searching mode until the reproduced address data match the designated address data, at which time the system controlling means operates the reader in its playback mode to read from the disc the program information data identified by the designated address data.