Abstract: A helical scanning type magnetic reproducing device capable of still picture reproduction provided with a stop mechanism in operative engagement with a mechanism for effecting still picture reproducing operation so as to stop running of the tape and operative together with a tension device which imparts to the stopped magnetic tape a tension which is as strong as the tension during running of the tape.

Abstract: A video system consisting of a recorder for recording a video signal and component units to be connected to a recorder in such a manner that a modes in a recorder, can be changed over in accordance with an connected component unit.

Abstract: A video system including a video camera which has an image signal recording system for recording on a recording medium the image signal obtained from a photo-electric conversion means and a reproducing device which contains a driving mechanism for driving the medium in the video camera.

Abstract: A video system includes a video camera for obtaining image signals, and a video recorder for recording the image signals. Driving power provided in the recorder, for loading a tape over a recording drum, is transmitted to the video camera after the tape is fully loaded on the drum. Movable parts in the video camera such as an automatic focus adjusting mechanism, can then be driven by the driving power source in the recorder.

Abstract: A magnetic recording and reproducing device includes a reproducing mechanism which can be operated in a selected one of a first mode wherein information recorded on a tape is reproduced at a speed substantially equal to that at which the information was recorded, and a second mode wherein the information is reproduced at a speed different from that at which it was recorded. The reproducing mechanism includes a principal rotation head which produces an information signal in the first mode. The mechanism also includes an auxiliary rotation head which operates to detect the positional shift of the principal head relative to the tape when the first mode is selected, and reproduces the information recorded on the tape when the second mode is selected.

Abstract: In the magnetic recording and reproducing apparatus disclosed, a loading arrangement displaces magnetic tape between a position where the tape's running path from a tape supply member to a take up member relative to a recording and reproducing arrangement makes it possible to record and reproduce and a position where such recording and reproduction is disabled. A transfer friction arrangement between a tape drive and the supply member or the take up member changes its frictional operation depending upon the tape running path controlled by the loading arrangement. According to a specific embodiment disclosed, the drive is shiftable between a direct direct mode when the tape is disabled from recording or playback and a slip torque transmission mode when the recording-playback is enabled.

Abstract: An apparatus for recording and reproducing video signals on a recording medium includes a mechanism for transporting the recording medium with respect to recording and reproducing elements of the apparatus. A control arrangement operates to control the speed of movement of the transport mechanism in response to a supply of electrical power, and selecting circuitry is arranged to select a particular electrical power source to supply the electrical power to the control arrangement.

Abstract: A record reproduction apparatus having a loading member operative to pull a tape out from a tape cassette for winding around a rotating head drum wherein a clutch mechanism transmits a rotating force of the loading member to a tape reel stand depending on the rotating direction of a loading ring so that a transmission of the rotating force by the clutch mechanism occurs only during unloading of the tape and not during fast forwarding and rewinding of the tape.

Abstract: A video recording system includes a combination of a cassette type video recorder and a portable video camera, in which the recorder is provided with a battery for supplying power to both parts.The camera has first and second switches which are so made that the switches are operated in sequence for controlling an operating condition of the recorder and camera. When the first switch is actuated, a shooting operation of the camera is started and the recorder is set into a stand-by state for recording. Then by an actuation of the second switch a recording operation of the recorder is started.

Abstract: A video tape recorder allows pictures to be taken and recorded with a video camera connected to the recorder. The recorder has a push button which is activatable to stop recorder operation, and has a circuit for nullifying or defeating the operation of the stop push button. The nullifying circuit is controllable by the operation of the video camera connected to the recorder, and is arranged to nullify the operation of the stop push button at least when the video camera is performing a picture-taking operation.

Abstract: A sound motion picture projection system which can be formed by a combination of a silent film projector and a sound recording and reproducing unit, wherein a silent film projector and a separate sound recording and reproducing unit are provided and minor modification is given to said silent film projector so that said silent film projector can be used as a projection unit only with said minor modification.

Abstract: Disclosed is a sound motion picture projection apparatus in which a head pad is urged by a spring member toward a film pressing position at which position the head pad presses a film against a magnetic head disposed along the sound recording and reproducing film path. The apparatus has a set mechanism of the self-holding type which sets the head pad against the urging force of the spring member to a film pressure releasing position at which position the head pad releases the pressing of the film, by the driving force of a driving motor and keeps the head pad to that position.

Abstract: The present invention relates to a lens unit construction for motion picture and other type projectors. The unit is provided with a motion picture projecting lens construction, a mantle cover to be fixed on the fixing position of the motion picture projector body, a guide device for slidingly guiding and holding the lens construction holding device on the device plate in such a manner that the construction holding device is slidable only along the direction of the optical axis of the lens construction and an adjusting device for operating the slide motion of the construction holding device. The construction holding device or the adjusting device is provided with a cam follower pin while the other is provided with a focus adjusting cam groove in which the cam follower pin is engaged.

Abstract: A sound motion picture projection apparatus provided with pressure pad means operable to press a film against magnetic sound recording and reproducing head means disposed along a path of the film for sound recording and/or reproduction. Urging means urge the pressure pad means toward its film pressing position. Externally operable means are provided for shifting the pressure pad means from its film pressing position to a released position against the urging force of the urging means. Releasable locking means are provided for holding the pressure pad means in the released position against the urging force of the urging means; and film detecting means are disposed in said sound film path behind the magnetic head means to detect introduction of the film into the sound film path and to release the locking of the pressure pad means by the locking means.

Abstract: The present invention relates to a cine-projector so designed as to carry out the motion picture projection, the still picture projection, the quick film feeding as well as winding up by simultaneously controling the first clutch mechanism for selectively interrupting the engagement of the driving ower transmission mechanism with the feeding shaft rotated by means of the driving power of a motor rotating along a single direction through the driving power transmission mechanism by means of the translation mechanism to be translated at least into three positions in functional engagement with the operation mode change over mechanism for changing over the operation mode of the cine-projector, the second clutch mechanism for selectively interrupting the engagement of the driving power transmission mechanism with the winding up shaft rotated along the inversed direction as that of the above mentioned feeding shaft by means of the driving power of the above mentioned motor through the driving power transmission mech

Abstract: A motion picture projector having various functions such as, projecting and rewinding, all of which can be selectively performed by a single control knob, and including an intermittent-drive film advancing mechanism which comprises a pull-down structure, a compound cam of an up-and-down cam wheel and an in-and-out cam disk, and first and second cam followers arranged between the pull-down structure and the compound cam to be consecutively operated so that the pull-down claw enters the perforations of the film and moves it in a forward direction always by the length of a frame and at a desired frequency through a film gate mechanism. The film gate mechanism consists of a film guideway, a resilient thin aperture plate self-biased to move away from the film guideway and defining an actual projection aperture, and a movable film gate member arranged on the opposite side of the aperture plate from the guideway and biased to urge the aperture plate for guidance and support of the film against the guideway.