Abstract: A recording apparatus that records data to an optical disc is disclosed. The recording apparatus includes a determination section that determines, when the optical disc is inserted, whether or not the recording condition information has been copied and recorded in the data recording area, a reading section that reads the recording condition information from the low recording-density area when the recording condition information has not been copied or recorded in the data recording area, and a recording section that copies and records the recording condition information read from the low recording-density area to a copy area in the data recording area while the optical disc is inserted.

Abstract: A recording apparatus for recording data in individual blocks each made of plural given regions on an optical disc is disclosed. The recording apparatus may have (i) a detection portion which detects a finally recorded region on the disc by detecting for each of the given regions as to whether or not data is recorded and (ii) a recording control portion which records dummy data from a region next to the finally recorded region detected by the detection portion to the final region of a block located behind the finally recorded region by at least one region and then starting to record data from the head region of the subsequent block.

Abstract: A recording apparatus for recording data in individual blocks each made of plural given regions on an optical disc is disclosed. The recording apparatus may have (i) a detection portion which detects a finally recorded region on the disc by detecting for each of the given regions as to whether or not data is recorded and (ii) a recording control portion which records dummy data from a region next to the finally recorded region detected by the detection portion to the final region of a block located behind the finally recorded region by at least one region and then starting to record data from the head region of the subsequent block.

Abstract: A recording apparatus that records data to an optical disc is disclosed. The recording apparatus includes a determination section that determines, when the optical disc is inserted, whether or not the recording condition information has been copied and recorded in the data recording area, a reading section that reads the recording condition information from the low recording-density area when the recording condition information has not been copied or recorded in the data recording area, and a recording section that copies and records the recording condition information read from the low recording-density area to a copy area in the data recording area while the optical disc is inserted.

Abstract: A reproduction apparatus and method a recording apparatus and method by which two different kinds of data can be reproduced and recorded efficiently are disclosed. When main data are intermittently read in from a recording medium, periods within which reading in of the main data is not performed appear inevitably, and the periods are made use of to read in sub data from the recording medium, thereby allowing synchronized reproduction of the main data and the sub data which relate to the main data. On the other hand, when main data are intermittently written onto a recording medium, periods within which writing of the main data is not performed appear inevitably, and the periods are made use of to write sub data onto the recording medium, thereby allowing parallel recording of the main data and the sub data.

Abstract: The invention provides a reproduction apparatus and method by which main data and sub data for modifying the main data can be reproduced in synchronism with each other readily by simple operation. Main data and sub data which are being reproduced in synchronism with the main data are searched in response to a searching operation of a user based on main data management information to be used for management of the main data or sub data management information to be used for management of the sub data to find out data to be reproduced in a unit of main data or sub data.

Abstract: A high speed dubbing is to be realized with two recording and/or reproducing units for compressed data. To this end, a magneto-optical disc 32 is read by an optical head 33 and compressed data produced via a decoder 41 are delivered to a memory 14 via a switch 37. The data are then delivered to a magnetic head driving circuit 16 via an encoder 15 for direct writing on a magneto-optical disc 2. In this manner, compressed data are directly dubbed without expansion to realize high speed dubbing.

Abstract: There is provided a recording apparatus to perform the recording operation to a recording medium by receiving audio information as the main data and character information as subdata transmitted from a broadcasting station in view of extracting the partitioning code formed of the predetermined code included in the subdata, storing in memory an address recorded in a recording medium when the partitioning code is extracted, automatically performing the editing process based on the address stored in the memory when the audio information as the main data and character information as the subdata are recorded to the recording mediums and easily performing the searching operation during the reproducing operation.

Abstract: A high speed dubbing is to be realized with two recording and/or reproducing units for compressed data. To this end, a magneto-optical disc 32 is read by an optical head 33 and compressed data produced via a decoder 41 are delivered to a memory 14 via a switch 37. The data are then delivered to a magnetic head driving circuit 16 via an encoder 15 for direct writing on a magneto-optical disc 2. In this manner, compressed data are directly dubbed without expansion to realize high speed dubbing.

Abstract: A recording and/or reproducing apparatus having a memory controller which controls a write-in and read-out operation of data into the memory. When data are recorded on a disc-shaped recording medium by the recording and/or reproducing unit, the memory controller time-divisionally stores into a first storage area of a memory the data which will be recorded on the disc-shaped recording medium by the recording and/or reproducing unit while simultaneously time-divisionally storing into a second storage area of the memory management data for the disc-shaped recording medium which are read out by the recording and/or reproducing unit.

Abstract: A disc recording and reproducing apparatus for using an optical disc having a recording area in which information signals are recorded and a lead-in area in which data related to the information signals recorded in the recording area is recorded includes a timer, a display, recording and reproducing apparatus and a controller. The timer counts at least the current time and outputs time data. The display displays time corresponding to the time data. The recording and reproducing apparatus records and reproduces the information signals and the time data on the optical disc. The controller controls the recording and reproducing apparatus and the display. The recording and reproducing apparatus is controlled by the controller during the recording for recording the information signals in the recording area of the optical disc and for recording the time data from the timer in the lead-in area of the optical disc.

Abstract: A reproducing apparatus in which a reproduction signal reproduced from a recording medium is temporarily stored in a memory and is thereafter read out, and in which, when the amount of accumulation of the reproduction signal stored in the memory becomes equal to or larger than a predetermined value, a function of at least one section of the reproducing apparatus is inhibited. A part of at least one of a program read out from the memory before the inhibition of the above-mentioned function and other programs before and after the program read out from the memory is previously stored in the memory. Therefore, even if an access to such a program is requested while the function of the related section of the reproducing apparatus is inhibited, the part of the program can be read out to immediately obtain the desired reproduction output.

Abstract: A recording and/or reproducing apparatus having a memory controller which controls a writ-in and read-out operation of data into the memory. When data are recorded on a disc-shaped recording medium by the recording and/or reproducing unit, the memory controller time-divisionally stores into a first storage area of a memory the data which will be recorded on the disc-shaped recording medium by the recording and/or reproducing unit while simultaneously time-divisionally storing into a second storage area of the memory management data for the disc-shaped recording medium which are read out by the recording and/or reproducing unit.

Abstract: A data encoder wherein the outputs of a synchronization data generating means 51, a cluster counter 52, a sector counter 53, a recording data output means 56 and a dummy data generating means 55 are selected by a selector 57 to provide an output. A selector control means 59 is constituted to control the selector 57 to output a data group (cluster) which is one recording unit formed of the predetermined number of sectors in the predetermined format by controlling the selector 57 in a predetermined timing depending on a Link signal based on the sector counter 53 and a count value of the byte counter 60. The processing load shared on a microcomputer, which is controlling the recording operation, can thus be alleviated remarkably.

Abstract: Recordable areas are recorded such that, if a recordable area exists on the outermost position of the disc, it is made into the head recordable area. The other recordable areas are linked from the inner peripheral side toward the outer peripheral side in order of address. With this method, the audio-recording is executed such that the segment division is minimized and the distance between segments is minimized. This makes it possible to shorten the segment access time and minimize the number of accessing operations required. In this way, sound-interruption and the deterioration of the shock-proof function in reproducing action can be prevented.

Abstract: A recording apparatus for an optical recording medium having a pregroove and address data includes a recording head apparatus and a controller. The recording head apparatus has an optical head device and records data on the optical recording medium along the pregroove. The optical head device radiates a light beam having an intensity which is enough to record the data on the optical recording medium. The optical head device includes a detector. The controller controls the recording head apparatus and receives an output signal supplied from the detector. The optical head device is controlled to move a recording start point from the previous recording start point by a predetermined value when the controller detects the occurrence of a recording error according to the output signal from the detector and restart recording the data from the moved recording start point on the optical recording medium.

Abstract: An optical disc reproducing apparatus including an optical head, memory, controller and decoder. The head intermittently reads digital data in at least two channels L, and R recorded on an optical disc. The memory temporarily stores digital data obtained by demodulating the output data of the optical head. The controller controls the reading operation of the optical head on the optical disc based on the amount of the digital data stored in the memory. The controller also controls an operation of writing data into the memory and an operation of reading data from the memory so that the digital data output by the optical head are written into the memory at a transfer rate which is higher than the transfer rate at which the digital signals stored in the memory are read out. The is supplied with the digital data for the two channels stored in the memory on a time-division basis.

Abstract: There is provided a disc recording apparatus for recording digital data by an optical unit in such a manner that time compressed digital data are arranged into a plurality of clusters at an interval of a predetermined number of sectors, a cluster-linking sector having a length longer than an interleaving length is provided at each linking part of each cluster, and the digital data are subsequently interleaved and recorded on a disc-shaped recording medium so that interleaving at the time of data recording on the cluster-by-cluster basis is within the range of the cluster-linking sector.

Abstract: There is provided a disc recording apparatus for recording digital data by an optical unit in such a manner that time compressed digital data are arranged into a plurality of clusters at an interval of a predetermined number of sectors, a cluster-linking sector having a length longer than an interleaving length is provided at each linking part of each cluster, and the digital data are subsequently interleaved and recorded on a disc-shaped recording medium so that interleaving at the time of data recording on the cluster-by-cluster basis is within the range of the cluster-linking sector.

Abstract: An apparatus for recording compressed digitized information to an optical disc by reading the digital data into a memory for transient storage. The digital input data thus written into the memory are sequentially read out of the memory and into an encoder at a transfer rate faster than the input transfer rate where the digital data are arranged in discrete clusters of record units including cluster-linking groups such that each record unit can be interleaved independently and without affecting other record units. The interleaved record units are then recorded onto an optical disc. Reproduction of the record units from the optical disk is carried out by reversing the process.