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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 7199857 | Digital control unit for projector automation systems A projector automation system for controlling one or more controlled systems having functionality that is responsive at least in part to automation control signals. The automation system interacts with a digital projector having a control port and a film projector h... | 04/03/2007 |
| 7137710 | Projection system A method for presenting secondary information to a video-viewing audience comprises projecting video images onto a screen and projecting invisible light signals encoded to represent secondary information associated with said video images onto the screen concurrently... | 11/21/2006 |
| 7107605 | Digital image frame and method for using the same A digital image frame and method for using the same are provided. In one embodiment, the digital image frame is coupled with a computer system via a local area network (LAN). Data is sent between the digital image frame and computer system. ... | 09/12/2006 |
| 6904451 | Wireless networked presentation system A presentation system having both video for projecting images for viewing by a user and audio for broadcasting sound in which both the audio and video are under central control, the presentation system comprises a digital projector having a wireless local area netwo... | 06/07/2005 |
| 6856375 | Liquid crystal light valve and projection display device including the same The invention provides a liquid crystal light valve that makes it possible to increase the life of a polarizer at a light-exiting-surface side of the liquid crystal light valve by reducing the burden thereon, and a projection display device that incorporates the liq... | 02/15/2005 |
| 6688747 | Achieving color balance in image projection systems by injecting compensating light An image projection system improves the brightness and/or color balance of a projected image. The system includes an auxiliary light source from which compensating light co-propagates with polychromatic light emitted by a primary light source along a prim... | 02/10/2004 |
| 6483568 | Supplemental audio content system for a cinema and related methods A supplemental audio content system may include a storage device for storing supplemental audio content, a time tagger cooperating with a clock for generating time tagged identification data based upon identification data from the motion picture film duri... | 11/19/2002 |
| 6101591 | Method and system for selectively independently or simultaneously updating multiple system time clocks in an MPEG system Method, system and computer program product are provided for selectively separately updating multiple system time clocks or synchronously updating the multiple system time clocks (STCs). Separate or simultaneous updating of the system time clocks is attai... | 08/08/2000 |
| 5877842 | Digital Dailies A system to create, for screening purposes, an adjustable, pre-selectable synchronous relationship between motion picture film segments and their matching audio files, by transferring the audio to a digital format, storing the audio files on a portable or... | 03/02/1999 |
| 5808722 | Apparatus for extending and reproducing video and audio data and a video and audio synchronization controller A motion-pictures and audio synchronization controller for extending and reproducing compressed motion-pictures and audio multiplexed data and outputting motion-pictures synchronously with audio comprises a selector for adjusting time between a system clo... | 09/15/1998 |
| 5754359 | Audiovisual filmstrip image display apparatus and method using film carried magnetic signals An audiovisual filmstrip image display apparatus and method includes an image displayer, such as a viewer projector, television or computer screen or the like, together with an audio speaker and a converter including a player, capable of playing multiple ... | 05/19/1998 |
| 5751398 | Motion picture digital sound system and method A digital time code is printed in an area of a motion picture film, between the normal analog optical sound track and the picture frames, that is exposed along with the sound track when a print is made. This area is partially redeveloped, and normally res... | 05/12/1998 |
| 5485232 | Digital audio signal recording device for motion picture film and audio signal recording system for motion picture film employing the digital audio signal recording device A digital audio signal recording device which, in conjunction with a film magazine loaded with a motion picture film and an analog audio recording device recording analog audio signals on the motion picture film, constitutes an audio signal recording syst... | 01/16/1996 |
| 5450146 | High fidelity reproduction device for cinema sound Dynamic range and passband problems in cinema sound transmission are solved by using a laser disk (9) read by a laser disk player (10, 11, 12) synchronized (14) with the original sound track of the film. Problems relating to splices in the film are solved... | 09/12/1995 |
| 5386255 | Motion picture digital sound system and method with primary sound storage edit capability A digital sound system for motion picture films employs a digital time code on the film to trigger the transfer of sound data from a digital audio store to a FIFO memory. The digital audio data is read out from the FIFO memory and played back in the theat... | 01/31/1995 |
| 4893921 | Process for recording coded information on the marginal part or a perforated cinematographic film On the marginal part of a perforated cinematographic film, are recorded coded information or "addresses" associated respectively with the various images of the film, in the form of dots disposed in a matrix of longitudinal rows and of transverse columns. ... | 01/16/1990 |
| 4385814 | System for controlling distinct devices in a theater A system for controlling a plurality of distinct devices in a theater displaying a projected motion picture or other visual program and having a multichannel sound signal contained on a moving film or other type strip, which system has a memory unit for s... | 05/31/1983 |
| 4319812 | Audio-visual systems and methods Audio-visual systems including a motion picture film projector and a tape player, the film having optical cues and program reference notches for stopping film advancement, and the tape having start cues for starting film advancement. The optical stop cues... | 03/16/1982 |
| 4256389 | Method and system of controlling sound and effects devices by a film strip A method and system of blending the effective audio sensation in a theater having a plurality of audio speakers driven by a single program signal recorded on a motion picture film strip as the film strip is being projected in the theater, which method and... | 03/17/1981 |
| 3945718 | Sync contact switch for movie camera A switch adapted to cooperate with the pull-down claw of a silent movie camera for transmitting an electrical signal each time a frame of movie film is advanced past the shutter of the camera includes an insulating base adapted to be positioned within the... | 03/23/1976 |
