Patents Represented by Attorney Gerald B. Epstein
  • Patent number: 4180321
    Abstract: A printer control unit utilizes a microprocessor and a random-access memory for storing color and cuing information in order to eliminate the need for continuously reading a tape during the printing operation. The printer control unit utilizes a single tape reader and the microprocessor is programmed to permit color tapes, cuing tapes or composite tapes to be read by the single tape reader.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: December 25, 1979
    Assignee: Bell & Howell Company
    Inventors: Larry L. Langrehr, Charles J. Watson
  • Patent number: 4125847
    Abstract: A rangefinder mechanism is shown in which the scanning mirror has been reced with a movable scanning optic. The automatic rangefinder system includes a pair of optical paths one a reference path and the other a scanned path which are led to impinge upon a photosensitive surface for comparison purposes. The output of the photosensitive surface is used to adjust the main lens of the camera. Disposed in front of the movable optic is another optical movable relative thereto to coordinate with the position of the main lens of the camera as feedback and adjust the rangefinder system.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: November 14, 1978
    Assignee: Nihon Beru-Haueru Kabushiki Kaisha (Bell & Howell Japan, Ltd.)
    Inventor: Masao Abe
  • Patent number: 4041505
    Abstract: An automatic focusing system is provided to process amplitude and phase signals of image motion in an image plane. The camera includes a focusable objective lens, optical means, oscillating means, sensing means, and a servo. Light rays reflected from an object to be focused upon are received and refracted by the objective lens to the optical means which has a rear nodal point. The optical means receives and refracts the light rays to form an image of the object in an image plane. The optical means is oscillated about the rear nodal point by the oscillating means. While the optical means is being oscillated the image remains stationary in the image plane when the objective lens is focused upon the object, but is transversely displaced and oscillates in the image plane when the objective lens is not focused upon the object. The sensing means detects and processes amplitude and phase signals generated by image motion in the image plane and directs the servo to drive the objective lens into focus.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: August 9, 1977
    Assignee: Bell & Howell Company
    Inventor: Rudolf Hartmann
  • Patent number: 4015119
    Abstract: To inform the operator of a motion picture camera of under-exposure and the status of a fade operation, an indicator circuit is provided. The indicator circuit is in circuit with an automatic exposure control system which adjusts the diaphragm for correct film exposure under varying light conditions and an electronically controlled fade system which adjusts the diaphragm for a fade-in and fade-out sequence independently of the varying light condition on the subject.
    Type: Grant
    Filed: December 24, 1975
    Date of Patent: March 29, 1977
    Assignee: Nihon Beru-Haueru Kabushiki Kaisha
    Inventor: Teruhiko Miyake
  • Patent number: 4009949
    Abstract: For a sound motion picture projector, an automatic threading and image-sound synchronization system is provided without added moving components. During threading the system establishes for image-sound synchronization the correct image-to-sound spacing of a film having the sound longitudinally spaced along the film from the related image.
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: March 1, 1977
    Assignee: Bell & Howell Company
    Inventor: Arthur E. Nupnau
  • Patent number: 3992305
    Abstract: Disclosed for a sound motion picture camera is an improved shuttle speed trol device including a film loop sensor sensitive to slight variations in the film loop for causing the speed of the shuttle to be changed by a simple brake device utilizing powers of the drive motor whereby less force is required for sensing the size of the film loop to maintain picture-sound synchronization.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: November 16, 1976
    Assignee: Nihon Beru-Haueru Kabushiki Kaisha (Bell and Howell Japan, Ltd.)
    Inventor: Yukio Katahira
  • Patent number: 3982826
    Abstract: Disclosed is a motion picture camera adapted to expose silent film and so film and having a control mechanism control the rate of film transport by intermittent and constant transporting devices to maintain a standard film transport speed. A high frequency differential transformer couples a power source and control circuitry including a rectifier circuit so that rectified output voltage of the transformer adjusts the intermittent mechanism responsive to the film loop size as detected by a film loop sensor arranged between the transporting devices. The output voltage varies from zero to some value when the loop sensor actuator is displaced from a position corresponding to an orientation when the film loop is of a standard size to modify the intermittent film transporting device to feed film at a rate to re-establish the film loop at the standard size.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: September 28, 1976
    Assignee: Nihon Beru-Haueru Kabushiki Kaisha (Bell & Howell Japan, Ltd.)
    Inventor: Fumio Saito
  • Patent number: 3952969
    Abstract: For a motion picture projector, a mode controller is coupled through control members to a dual clutch assembly to selectively transmitted drive as required from a unidirectional input to supply and take-up devices. Particularly, the mode controller is a manually operable mode selector for adjusting a control rod carrying dual control cams to selectively actuate respective supply and take-up drive transmitting clutches to free, slip, and positive drive conditions, as well as to actuate other projector components. Responsive to conditioning of the clutches, and projector components such as shuttle retractor and other control mechanisms, the projector is changed from one mode of operation to another.
    Type: Grant
    Filed: March 13, 1975
    Date of Patent: April 27, 1976
    Assignee: Bell & Howell Company
    Inventor: James G. Woodier
  • Patent number: D243279
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: February 1, 1977
    Assignee: Bell & Howell Company
    Inventors: George W. Bookless, Casimir S. Samczyk
  • Patent number: D260903
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: September 22, 1981
    Assignee: Bell & Howell Company
    Inventor: John W. Overman