Abstract: A head feed device for shifting a head carriage through the rotation of a screw shaft enhances head feeding precision by arranging the shaft part of the screw shaft to serve as a guide shaft for guiding the head carriage.

Abstract: A disc handling apparatus having a motor for rotating a disc for signal recordation and/or reproduction including a device for insuring that the ejection of the disc from a recording and/or reproducing position is enabled after the rotation of the disc by the motor is stopped by a brake.

Abstract: In a recording or reproducing apparatus which changes the recording or reproducing position thereof from one position to another by shifting a recording or reproducing head in the radial direction of a disc-shaped flexible recording medium, a head shifting device is arranged to bring the head into contact with the recording medium only when the head is in the recording or reproducing position in relation to the shift of the head; and to have the head retracted from the recording medium when the head is in other positions. This device effectively prevents the recording medium from being deformed or damaged on its recording surface, for example, when the head is left in contact with the medium over a long period of time while the medium is in repose.

Abstract: A carriage shifting device of a recording or reproducing apparatus comprises a transducer which is arranged to perform a recording or reproducing operation on a disc-shaped recording medium, a carriage arranged to shift the transducer along the recording medium, a carriage shifting cam arranged to shift the carriage, a driving gear arranged to drive the cam, a resilient member arranged to exert an urging force between the driving gear and the cam, and a control member arranged to be driven together with the cam and to keep the urging force of the resilient member substantially constant.

Abstract: A device for recording and reproduction having a recording and reproducing head, a disk driving mechanism, a head moving mechanism for moving the head relative to the medium, a manual actuator to start recording of a signal, an adjusting mechanism for the tracking adjustment of the head, and a control mechanism for enabling the operation of the manual actuator to be effective only when the adjusting mechanism is set at a predetermined condition.

Abstract: An image recording system capable of storing images at high density wherein a photoelectric conversion member, which converts an optical image into electric image information, is formed in a film configuration, optical images are incident to a plurality of different regions on the photoelectric conversion member through an optical low-pass filter and a color separation filter to store a plurality of color images, the photoelectric conversion member is made to contact the optical low-pass filter, and a scan unit is provided for scanning an electron beam to the photoelectric conversion member.

Abstract: A reproducing apparatus for reproducing a disc type signal bearing medium, which includes a reproducing transducer head and an automatic tracking control device for aligning the head with a selected track of the medium. The control device includes an electromechanical converting element for moving the head, a signal producing circuit for producing a tracking control signal based on the reproduced signal, a memory circuit for memorizing the control signal, and a switching circuit for selectively connecting the converting element with the signal producing circuit and the memory circuit. In a single track reproducing mode, the switching circuit connects the converting element with the signal producing circuit, and in a successive track reproducing mode, the switching circuit connects the converting element with the memory circuit.

Abstract: This specification discloses a cassette type video tape recorder provided with a tape loader for drawing out a tape from a loaded tape cassette and bringing the tape into contact with the tape guiding surface of an image recording and reproducing portion provided with an image recording and reproducing head. The tape loader being capable of being stopped at a third position between a first position for drawing out the tape from the loaded tape cassette and a second position in which the drawn-out tape is in contact with the tape guiding surface of the image recording and reproducing portion.

Abstract: A recording and/or reproducing apparatus of the kind using a disc-shaped record bearing medium is provided with a stabilizer plate for stabilizing the rotation of the medium; a center core pressing device for pressing a center core which is secured to the medium against a rotatory drive part; and common support member for supporting both the stabilizer plate and the center core pressing device in common with each other, so that the stabilizer plate and the center core pressing device can be arranged in one unit.

Abstract: A recording and/or reproducing apparatus using a magnetic disc housed in a cassette, in which the cassette is received and placed by a cassette holder at a predetermined loading position for the signal recording and/or reproduction where a magnetic head is provided. The head is moved relative to the disc by a head moving mechanism driven by a motor, while the holder is moved by a loading mechanism which is selectively connectible with the motor through a clutch mechanism. Thus, the head moving motor is also utilized as a cassette loading motor.

Abstract: In a helical scan type magnetic recording and reproducing apparatus having a tape loading mechanism for training the magnetic tape against the wall of a tape guide drum, including a magnetic head, over a predetermined angle, an idler is arranged to selectively engage a supply reel pedestal and a takeup reel pedestal and is provided with a driving torque transmitting device for transmitting driving torque from a drive source to this idler, wherein the aforesaid driving torque transmitting device is arranged to be switchable between a first mode, where the driving torque of the drive source is directly transmitted to the idler, and a second mode, where the driving torque of the drive source is transmitted through a slip torque transmission portion to the idler, and this switching is effected in relation to operation of the aforesaid tape loading mechanism.

Abstract: The disclosed head moving device linearly and intermittently moves a head, such as a recording or reproducing head, a predetermined unit amount. A moving mechanism linearly moves the head in response to the rotation of an output shaft of a motor. A rotation component operatively connected to the output shaft of the motor rotates in response to the rotation of the output shaft so that one revolution of the rotation component corresponds to the predetermined unit amount of movement of the head, and an arresting element arrests the rotation component every revolution.

Abstract: In the helical scan type magnetic recording and reproducing apparatus having the tape loading mechanism for training the magnetic tape against the wall of the tape guide drum including the magnetic head over the predetermined angle, an idler is arranged to selectively engage the supply reel pedestal and the takeup reel pedestal and is provided with a driving torque transmitting means for transmitting driving torque from a drive source to this idler wherein the aforesaid driving torque transmitting means is arranged to be switchable between a 1st mode where the driving torque of the drive source is directly transmitted to the idler and a 2nd mode where the driving torque of the drive source is transmitted through a slip torque transmission portion to the idler, and this switching is effected in relation to operation of the aforesaid tape loading mechanism.

Abstract: The disclosed erasing apparatus serves for erasing a signal from individual recording tracks of a magnetic recording medium. A soft magnetic and high permeability member forms a magnetic circuit which passes through a magnetic head and the recording medium. A suitable arrangement causes either the magnetic head or the high permeability member to produce a magnetic field for erasing the signal.

Abstract: An adapter permits mounting of a large cassette on a information recording and/or reproducing apparatus adapted for recording or reproducing records on a strip like recording medium contained in a small cassette mounted on the apparatus, so that both small and large cassettes can be used on the apparatus with the adapter mounted thereon.

Abstract: A recording and reproducing apparatus in which an information signal is recorded in the first area of a track on a recording medium, a pilot signal is recorded in the second area for tracking control. When a reproducing head is on the second area, tracking by a reproducing head in the first area is controlled by the pilot signal reproduced by the reproducing head.

Abstract: In a magnetic recording and/or reproducing apparatus of the cassette type which is adapted to employ a small-sized tape cassette, the magnetic tape in the cassette is extracted to be wrapped about and from the both sides of a guide drum to a predetermined angular extent by means of a pair of extracting means. The extracting means have a vertical pin and an inclined pin arranged rotatably about the vertical pin in order that such means may travel in a restricted space of the apparatus. After achievement of the extraction of the tape, the inclined pin is adapted to rotate in such a direction that the tape is further wrapped around the guide drum, so that the tape loading is achieved. A pinch roller is so provided that it travels on the same path as the extracting means at least from the starting position to the predetermined position also in such restricted space.

Abstract: In the disclosed device first and second reproduction heads contact two recording tracks on a recording medium, and a tracking control controls their tracking such that there is no difference in outputs between the first and second reproduction heads. The distance between the two reproduction heads is set so that tracking deviations from a normal course cause the outputs of the two heads to differ according to the direction and amount of the deviation.

Abstract: In the disclosed image signal recording-reproducing device, a first head records and reproduces an image signal and a second head upstream of the first head on the recording medium reproduces an output which is mixed with a predetermined image signal and recorded on the recording medium.

Abstract: A video system comprising a video camera and a recording device to record video signals obtained by the video camera. The recording device includes a video tape recorder (VTR) which may be combined with the video camera when recording and otherwise may be combined with a reproduction unit. Mode switches in the VTR are changed over depending on the combination desired. When the VTR is used with the camera, the combination records sound, video signal and controls signals on a tape wound around a drum. A system control circuit controls various motors and solenoids control operation of the VTR. Power supply to the system is controlled by a power source switch in the VTR, which element provides "OFF", "STANDBY I" and "STANDBY II" modes. Delay elements operate in the two standby modes. When the power source switch is in either standby mode, loading is done automatically. One standby mode provides power to a rotating system and the other mode provides no power.