Abstract: A rotary recording medium comprises a video signal of the same unit repeatedly recorded for N-field period (N is a natural number greater than or equal to 2) for each track turn, a track shift address signal for instructing the existence of forced track shift of a pickup reproducing element, the shifting direction, and the shifting position, recorded on at least one position for one revolution of the rotary recording medium with a constant period regardless of the kind of video signal source of the video signal, where the track shift address signal comprising at least a synchronizing code, rotary recording medium type discriminating code, a kick existence instructing code, and a kick direction instructing code, and divided audio signal parts obtained by dividing an audio signal for every field period of the video signal which is reproduced, successively arranged and recorded according to a scanning locus of the pickup reproducing element upon normal reproduction.

Abstract: An address data accessing device is used with a reproducing apparatus which reproduces recorded signals from a rotary recording medium which is time-sequentially recorded with a plurality of kinds of information signals, a time address signal, and a chapter address signal. The address data accessing device comprises an instruction decoder supplied with an information signal selecting instruction data when selectively reproducing one kind of information signal from among the plurality of kinds of information signals which are reproduced from the recording medium, an address data fetch circuit for fetching and producing one of the time address signal and the chapter address signal which are reproduced, and a switch circuit for switching and producing one of an output signal of the instruction decoder and a signal from the address data fetch circuit in response to another output signal of the instruction decoder, and for applying an output signal thereof to the address data fetch circuit.

Abstract: A digital video signal reproducing apparatus comprises a reproducing circuit for reproducing a digital video signal from a recording medium, which digital video signal is added with at least a write-in specifying code and a read-out specifying code for specifying a memory circuit part to picture element data groups which are obtained by subjecting a video signal to a digital pulse modulation, a detecting circuit for detecting the write-in specifying code and the read-out specifying code within a reproduced digital video signal from the reproducing circuit, a generator for generating various synchronizing signals and reference signals, first and second memory circuit parts each having a memory capacity for storing picture element data corresponding to one picture, a write controller for causing the picture element data to be written into one of the first and second memory circuit parts according to a value of the write-in specifying code, a latch circuit for latching the read-out specifying code by a vertical

Abstract: A rotary recording medium recorded with an information signal including a video signal along a spiral track thereon, and from which the recorded information signal is reproduced by a reproducing apparatus in which a reproducing element scans over the spiral track, is further recorded with a stop signal on a track turn recorded with an information signal which is to be reproduced repeatedly for a predetermined time period so that the reproducing element repetitively reproduces the track turn for the predetermined time period. The reproducing apparatus comprises a stop signal detection circuit for detecting the stop signal from a signal reproduced by the reproducing element, and a circuit responsive to the stop signal detected by the stop signal detection circuit, for causing repetitive reproduction of a predetermined track turn recorded with the stop signal. The still picture reproduction is performed by repetitively reproducing the information signal recorded on a track turn recorded with the stop signal.

Abstract: A periodical signal detection circuit in a reproducing apparatus which reproduces an information signal and a periodical signal from a recording medium recorded with the information and periodical signals comprises a separation circuit for separating the periodical signal from the reproduced signal, a reference pulse generating circuit for generating a reference pulse having a same repetition frequency as the periodical signal, a window signal forming circuit for forming window signals respectively having differing widths, with a repetition period identical to that of the reference pulse, a first gate circuit for producing the periodical signal from the periodical signal obtained from the separation circuit and the window signal obtained from the window signal forming circuit, a first counter for generating a switching control signal every time the reference pulse is counted N (N is an integer including zero) times, to produce an output when counting is performed for a predetermined number of times, a window

Abstract: A rotary recording medium reproducing apparatus comprises a holding mechanism for clamping and holding a lid plate and a rotary recording medium when a case having a jacket accommodating therein the rotary recording medium and the lid plate for closing the jacket is inserted into the reproducing apparatus through an inserting opening, where the lid plate and the rotary recording medium thus clamped and held are recovered within an empty jacket inserted through the inserting opening, a control mechanism for putting the reproducing apparatus in a state possible or not to insert the case or the jacket into the reproducing apparatus through the inserting opening, a detection circuit for detecting whether the rotary recording medium exists within the reproducing apparatus, a single load/eject switch, and a control circuit for controlling the control mechanism by use of a detection output of the detection circuit and an output of the load/eject switch, so that a state possible for inserting the case into the reprod

Abstract: A reproducing apparatus comprises a reproducing circuit including a pickup reproducing element, for reproducing recorded signals from a rotary recording medium, an address signal reproducing circuit for reproducing a track shift address signal from the signals which are reproduced by the reproducing circuit, a detecting circuit for detecting whether the address signal is reproduced with a predetermined period, a memory for storing the value of the reproduced address signal or a flag which is related to the value of the reproduced address signal, when the detecting circuit detects that the address singal is reproduced with the predetermined period, and a circuit for generating a control signal which causes the pickup reproducing element to undergo a forced track shift at predetermined positions on the tracks so that the pickup reproducing element scans along a scanning locus which has the same periodicity as the scanning locus along which the pickup reproducing element had been scanning up to that point.

Abstract: An address signal reproducing system is provided in a rotary recording medium reproducing apparatus which reproduces signals from a rotary recording medium by a reproducing element, where the rotary recording medium is recorded with an address signal in units of predetermined sections for a plurality of sections for each track turn of the rotary recording medium.

Abstract: A special reproducing system comprises a reproducing element for scanning a spiral track of a rotary recording medium on which an information signal is recorded and a kick control signal is recorded together therewith at a predetermined position, a detecting circuit for detecting the kick control signal from among signals reproduced by the reproducing element, a kick pulse generating circuit for generating a kick pulse in response to the kick control signal detected by the detecting circuit, and a shift mechanism for shifting the reproducing element from a track to another track adjacent thereto in an inner peripheral or outer peripheral direction in response to the kick pulse supplied from the kick pulse generating means, the reproducing stylus is shifted by the shift mechanism to effect a special reproduction.

Abstract: A signal pickup device in a rotary recording medium reproducing apparatus comprises a turntable placed thereon with a rotary recording medium recorded with an information signal as variations in geometrical configuration, for rotating the rotary recording medium, a reproducing stylus provided at a tip end of a cantilever, for making contact with and sliding against a recorded region of the rotary recording medium upon reproduction to reproduce the information signal, a resonator having a resonance frequency which varies in accordance with the above variations in geometrical configuration, and a conductive ribbon having one end connected to the reproducing stylus and the other end connected to the resonator to electrically connect an electrode of the reproducing stylus with the resonator, where the conductive ribbon is in a curved and bent state upon reproduction of the rotary recording medium.

Abstract: A pausing system pauses reproduction in a rotary recording medium reproducing apparatus which reproduces a rotary recording medium recorded with an information signal on a spiral track. The reproducing apparatus comprises a reproducing transducer having a reproducing element for reproducing a signal from a track on the rotary recording medium and a kicking mechanism for kicking the reproducing element to an adjacent track in response to a kick pulse applied thereto.

Abstract: A rotary recording medium reproducing apparatus has an inserting opening through which the case of the medium is inserted, a turntable for rotating the medium, a locking mechanism for the lid of the case, and a medium clamping mechanism. A jacket opening enlarging mechanism is provided in the vicinity of the inserting opening for moving over the turntable between the vicinity of the inserting opening and the innermost part of the reproducing apparatus, in response to an operation in which the case is inserted into and then pulled out from the recording apparatus. A medium supporting member provided at a center part of the turntable moves upwards and downwards independently of the turntable, for raising to support an inner peripheral part of the medium above the turntable. A supporting member elevator mechanism elevates the medium supporting member so that the latter is in a raised state when the case or an empty jacket is inserted into the reproducing apparatus.

Abstract: A rotary recording medium reproducing apparatus for reproducing a rotary recording medium in which a plurality of fields of video signals are recorded for each track turn on a spiral track comprises a reproducing transducer having a reproducing element for scanning over tracks on the rotary recording medium to reproduce recorded signals, and shifting device responsive to a signal applied thereto for shifting the reproducing element towards the outer side or the inner side on the rotary recording medium, and a circuit for producing shifting a signal in order to shift the reproducing element by one track pitch towards the outer side on the rotary recording medium every time the reproducing element reaches one predetermined position on the rotary recording medium, and capable of producing a shifting signal for shifting the reproducing element towards the outer side or the inner side on the rotary recording medium according to the slow-motion ratio and the direction of the slow-motion reproduction when the reprod

Abstract: A rotary recording medium is recorded with a program information signal and an address signal having a predetermined code in correspondence with the program information signal within a program information signal recorded section. This rotary recording medium is recorded with an address signal having a code different from the code of the address signal recorded within the program information signal recorded section, in a section or sections other than the above program information signal recorded section.

Abstract: An address indicator control device in a rotary recording medium reproducing apparatus having a reproducing transducer for reproducing a rotary recording medium recorded with at least two kinds of address signals together with an information signal, a circuit for transferring the reproducing transducer to a set address position on the rotary recording medium reproducing apparatus to carry out a search operation, and an indicator for indicating an address, comprises an indication mode setting circuit for setting the kind of address to be indicated on the indicator, a search address setting circuit for setting the kind of address to be searched and the address value, an address signal separation circuit for separating an address signal from a signal reproduced from the rotary recording medium by the reproducing transducer, and a control circuit for indicating an address of the kind and value set by the search address setting circuit on the indicator regardless of the setting by the indication mode setting circu

Abstract: A reproducing element feeding and driving circuit is provided in a rotary recording medium reproducing apparatus consisting of a signal pickup device having a reproducing element for reproducing recorded signals from a rotary recording medium, a feeding mechanism for feeding the signal pickup device, and a tracking error signal obtaining circuit for obtaining a tracking error signal so as to perform tracking control with respect to the reproducing element.

Abstract: A rotary recording medium reproducing apparatus comprises a transferring circuit for transferring a reproducing element for reproducing a rotary recording medium, along a radial direction of the rotary recording medium, where the transferring circuit transfers the reproducing element at a normal speed during a normal reproduction mode, and transfers the reproducing element at a speed higher than the normal speed during a search mode in which a search is performed with respect to a desired reproducing position on the rotary recording medium, a synchronizing signal generating circuit for generating a synchronizing signal consisting of a horizontal synchronizing signal and a vertical synchronizing signal synchronized with a synchronizing signal within a video signal reproduced by the reproducing element during the search mode, a switching circuit for selectively passing the video signal reproduced by the reproducing element and the synchronizing signal obtained from the synchronizing signal generating circuit, a

Abstract: A quick-motion reproducing system is applied to a reproducing apparatus for reproducing a rotary recording medium by a reproducing element. The rotary recording medium is recorded with a video signal on a spiral track, and further recorded with a predetermined reference signal. The predetermined reference signal is recorded within intervals corresponding to vertical synchronizing signals within vertical blanking periods of the recorded video signal, for each track turn of the spiral track. The quick-motion reproducing system comprises a kick pulse generating circuit for generating a kick pulse only within a predetermined shifting interval including the vertical blanking period of the recorded video signal and intervals in the vicinity of this vertical blanking period, and a shifting circuit applied with the generated kick pulse, for successively shifting the reproducing element to adjacent tracks, only within the above predetermined shifting interval.

Abstract: A rotary recording medium reproducing apparatus for reproducing a rotary recording medium recorded with a program information signal and different kinds of address signals having mutually different predetermined codes in correspondence with the program information signal within a program information signal recorded section. The reproducing apparatus comprises a reproducing element for reproducing recorded signals from the rotary recording medium, a moving device for moving the reproducing element along a radial direction of the rotary recording medium, an address signal detecting circuit for detecting address signals from signals reproduced by the reproducing element, and a driving voltage generating circuit set with an address signal to be searched, for generating a driving voltage in accordance with the kind of set address signal, and supplying the driving voltage thus generated to the moving device.

Abstract: A periodical signal detection circuit in a reproducing apparatus which reproduces an information signal and a periodical signal from a recording medium recorded with the information and periodical signals comprises a separation circuit for separating the periodical signal from the reproduced signal, a reference pulse generating circuit for generating a reference pulse having a same repetition frequency as the periodical signal, a window signal forming circuit for forming window signals respectively having differing widths, with a repetition period identical to that of the reference pulse, a first gate circuit for producing the periodical signal from the periodical signal obtained from the separation circuit and the window signal obtained from the window signal forming circuit, a first counter for generating a switching control signal every time the reference pulse is counted N (N is an integer including zero) times, to produce an output when counting is performed for a predetermined number of times, a window