Patents Examined by Gene Z. Rubinson
  • Patent number: 4696032
    Abstract: A voice switched gain system is disclosed for loudspeaking telephone and hearing aid applications involving electret microphones. A voice switched gain circuit comprises an audio pre-conditioning circuit for providing a conditioned audio input referenced to an unconditioned audio input to a compandor circuit. A linear gain level reference generator circuit generates a level for comparison with the audio input level. A decision circuit then controls the compandor operation based on the result of the comparison. The decision circuit either maintains the audio output of the compandor in a compressed state or expands the audio input signal to a higher level expanded state for transmission. Two such circuits are provided in a loudspeaking telephone system, one circuit for maintaining a preemptive near end control through appropriate timing of the dual decision process. Far end control is provided by the other voice switched gain circuit.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: September 22, 1987
    Assignee: Siemens Corporate Research & Support, Inc.
    Inventor: Allan Levy
  • Patent number: 4696031
    Abstract: Apparatus and method for detecting and discriminating among various signals indicative of progress while making a telephone connection. A particular waveform parameter known as peak factor is advantageously employed in a call progress analyzer. The illustrative call progress analyzer uses the average magnitude peak factor (ratio of the peak of the waveform to the average of the absolute value of the waveform) to distinguish among single-tone signals (e.g., special service information tones), double-tone signals (e.g., dial tone, audible ring, and busy), and speech. Waveform ON and OFF times (duration above and below an energy threshold) are combined with signal-type determinations (made using peak factor) to automatically determine the status of a call.
    Type: Grant
    Filed: December 31, 1985
    Date of Patent: September 22, 1987
    Assignee: Wang Laboratories, Inc.
    Inventors: Richard L. Freudberg, Marshall B. Garrison
  • Patent number: 4695890
    Abstract: The present invention provides a device for reading a matrix of photosensitive detectors by line transfer with feedback, wherein means provide feedback of a part of the video signal from a line of the matrix which is read to a stage for series injection of a drive charge at the input of a register providing reading successively of each line of detectors of the matrix. Thus the value of the drive charge is modulated which is intended to be added to the video signal of the line of the matrix which will then be read, such modulation being directly proportional to the video signal of the line which is read and dependent on the transfer inefficiency of the device.
    Type: Grant
    Filed: April 7, 1986
    Date of Patent: September 22, 1987
    Assignee: Thomson-CSF
    Inventors: Gilles Boucharlat, Louis Brissot
  • Patent number: 4695891
    Abstract: A compact video camera which is operable at continuously variable shutter speeds to capture high speed events which may be recorded and played back in slow motion for scene analysis. The video camera includes an image sensor, a zoom lens, and a rotating shutter which is continuously adjustable to different shutter speeds. The camera components are dimensioned and configured in a compact design for easy-to-use hand-held operation. The shutter includes a pair of rotating shutter discs having openings which are selectively adjustable relative to each other to vary the interval during which the imager sensor is exposed to a scene projected onto it by the zoom lens. The shutter discs are mounted on respective first and second holow shafts. The first shaft is rotatably and slidably mounted on a portion of the second shaft by a linkage.
    Type: Grant
    Filed: November 13, 1986
    Date of Patent: September 22, 1987
    Assignee: Eastman Kodak Company
    Inventor: Dean M. Peterson
  • Patent number: 4696045
    Abstract: An ear microphone includes a bimorph piezoelectric transducer mounted on a PC board having an amplifier therein and surrounded by a helically wound spring. The piezoelectric transducer and spring are potted in a semi-soft potting compound which is formed in a shape adapted to be inserted into an external auditory ear canal to permit bone conduction to the microphone element. A cable is coupled to the amplifier through which a signal can be withdrawn for processing by electronic equipment.
    Type: Grant
    Filed: June 4, 1985
    Date of Patent: September 22, 1987
    Assignee: ACR Electronics
    Inventor: James M. Rosenthal
  • Patent number: 4695892
    Abstract: A method of calibrating a video system, which includes a video camera hav a lens for viewing a scene and a video recorder for recording the scene on video tape, to determine both vertical and horizontal angular dimensions of the scene. The video camera lens is focused for infinity and an image of an illuminated reticle pattern of known angular shape and size formed at infinity is projected into the video camera lens and recorded on the video tape by the video recorder. The optical device used to project the reticle pattern image is similar to known projection systems of certain types of gunsights.
    Type: Grant
    Filed: June 27, 1986
    Date of Patent: September 22, 1987
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Donald J. Mary
  • Patent number: 4694499
    Abstract: A directional microphone having an acoustic damping washer positioned about the microphone cartridge adjacent the microphone rear sound entry.
    Type: Grant
    Filed: February 13, 1985
    Date of Patent: September 15, 1987
    Assignee: Crown International, Inc.
    Inventor: Bruce Bartlett
  • Patent number: 4694483
    Abstract: A telephone call routing system for routing incoming telephone calls assigns each such incoming call to a selected one or more of a plurality of agent display modules. The agent display module has a visual output indicating which of a plurality of telephone lines carries the incoming call assigned to it. Any one of a plurality of agents' telephones associated with corresponding agents' modules may be connected to the line carrying the incoming call. Each telephone has a device for generating and transmitting a coded signal along the telephone line which is answered by that particular telephone. The signal is uniquely coded to identify the agent's module which is associated with the telephone which answers the incoming call. A signal detection device detects the transmitted coded signal and decodes the signal to determine which telephone associated with an agent's module answered the incoming call.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: September 15, 1987
    Assignee: Innings Telecom Inc.
    Inventor: Edward H. Cheung
  • Patent number: 4694488
    Abstract: The present invention involves a modular distributing frame assembly for distributing telephone circuits. It includes a central office bay member which has a generally vertical hollow member with forward and rear surfaces. The forward surface has a plurality of alternating terminal blocks and interstices. Each terminal block communicates with the rear surface and provides appearances for office cables. The rear surface defines a vertical opening adapted to receive the office cables. The frame also includes an outside plant bay member with a generally vertical hollow member with forward and rear surfaces. The forward surface has a plurality of alternate terminal blocks and interstices. Each of the terminal blocks provides appearances for subscriber cables. The rear surface defines a vertical opening with a plurality of connector blocks mounted therein.
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: September 15, 1987
    Assignee: GTE Products Corporation
    Inventors: Nils P. Mickelson, Jerauld C. MacFarlane
  • Patent number: 4694498
    Abstract: An automatic sound field correcting system with graphic equalizer means to be provided in an audio signal supply line. A test signal such as a pink noise is radiated in the listening space and detected at a predetermined listening point to determine the detection frequency characteristic of the test signal, thereby to adjust the frequency characteristic of the graphic equalizer means. Thereafter, the frequency characteristic of the graphic equalized means is made equal to different band-pass filter characteristics, one after another, and each time the equalization is effected, the detected test signal is obtained through the grapic equalizer means for determination of the detected frequency characteristic of the test signal.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: September 15, 1987
    Assignee: Pioneer Electronic Corporation
    Inventors: Shinichi Suzuki, Akio Tokumo, Yoshiro Kunugi, Masayuki Kato
  • Patent number: 4694345
    Abstract: A video special effects generator is simulated by using a telecine with a still film frame therein. Effects such as zoom and pan are pre-programmed in a store and used to change the telecine scanning raster to give the desired visual effect, the operation being timed relative to the video output signals. Aperture correction is also proposed to be programmed in a telecine in similar manner.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: September 15, 1987
    Assignee: Rank Cintel Limited
    Inventor: Jeremy A. Rodgers
  • Patent number: 4692807
    Abstract: A video camera and handle configuration include a conventional side hand grip which may be grasped in the normal manner by the camera user so that the wrist and forearm of the camera user generally extend downwardly from the hand grip and novel support sections which extend laterally outward from the same side of the camera housing underlying the hand grip for engaging the wrist and/or forearm of the camera user to steady his hand when he grasps the hand grip and thereby reduce strain and fatigue to the camera user's arm when videotaping for extended periods of time.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: September 8, 1987
    Assignee: Polaroid Corporation
    Inventor: Richard C. Kee
  • Patent number: 4692942
    Abstract: The invention relates to electroacoustic transducers and more particularly to microphones in which the conversion of an acoustic vibration into an electric voltage is provided by a piezoelectric diaphragm. The purpose of the invention is to allow transducers to be formed by mass production methods with a minimum of parts for providing the functions of embedment of the diaphragm, connections, screening, acoustic filtering and protection against damp and dust.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: September 8, 1987
    Assignee: Thomson CSF
    Inventor: Jean P. Morgand
  • Patent number: 4692804
    Abstract: An image distortion correcting apparatus for a television camera. In addition to an analogue correcting waveform, four corner independent distortion correcting waveforms are employed for rough adjustment together with a digital distortion correcting signal serving for fine adjustment. These waveforms are combined to be utilized for correcting image distortion from which the television camera suffers. A high-accuracy correction of image distortion can be accomplished with a circuit configuration of a small scale.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: September 8, 1987
    Assignee: Hitachi Denshi Kabushiki Kaisha
    Inventors: Akira Aoki, Fumio Ukigaya
  • Patent number: 4691242
    Abstract: A contact-type image sensor comprises a layer of photoelectric material on one of whose surfaces are formed a linear array of discrete electrodes and on the other of whose surfaces are formed at least two common electrodes each of which has portions which are opposite a different limited portion of each of the discrete electrodes whereby the number of picture elements may be at least doubled when the two common electrodes are operated in turn as the discrete electrodes are successively switched on for readout.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: September 1, 1987
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Toshiaki Kato
  • Patent number: 4691342
    Abstract: A multi-speed, full duplex modem is disclosed for transmitting and receiving analog signals over a telephone network in communication with a remote modem. The analog signals are converted to digital data for processing by a signal processor and a microcomputer. A bi-directional bus is disposed between the signal processor and the microcomputer for selectively transferring multiple bits of data in either a transmit or receive direction. One or more of the multiple bits of data are restricted to convey bus direction data in one of the transmit and receive directions, and not restricted in the other direction. The full duplex modem allows simultaneous transmission and reception of analog signals over the telephone network, at one of the multispeed data rates selected for compatability between the full duplex, multispeed modem and the remote modem.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: September 1, 1987
    Assignee: CTS Corporation
    Inventors: Mark A. Waldron, Tommy Y. Leung
  • Patent number: 4691348
    Abstract: A two way telephone communication system includes a station having a signal transmitting channel for conveying a signal received at a microphone to another station, a signal receiving channel for conveying signals received from the other station to a speaker, and switches permitting the two signal channels to be selectively enabled or disabled. Two signal detection paths are associated with the transmitting and receiving channels, each containing circuitry which detects the presence of signals in one of the channels and responds by generating actuating signals. Control circuitry responds to the detection path which first generates an actuating signal by enabling its associated signal channel and simultaneously disabling the other signal channel, triggering the switches appropriately. Delay circuitry associated with each signal detection path can be selectively enabled to delay the generation of an actuating signal in the associated signal detection path.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: September 1, 1987
    Assignee: Novatel Communications Ltd.
    Inventor: Russell E. Braathen
  • Patent number: 4691244
    Abstract: Image scanning apparatus including an array of thin film light sensitive elements, said apparatus relying upon the concept of "proximity focusing" in order to generate electrical signals for replicating an image on an image-bearing member. Included is a shielding layer operatively disposed between the abrasion-resistant, transparent coating and the upper electrode of said light sensitive elements for dissipating the harmful affects of static charge build-up.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: September 1, 1987
    Assignee: Energy Conversion Devices, Inc.
    Inventors: Vincent D. Cannella, Zvi Yaniv, Robert R. Johnson
  • Patent number: 4691340
    Abstract: A user terminal for use in a Videotex system includes an image number memory for storing image number data identifying specific ones of the images. A keyboard is provided for entering at least an image selection command, and the user terminal is responsive thereto to display the image whose image number data is stored in the image number memory. The image number memory automatically stores the image number data of the image currently displayed, or the image number memory may be made to store the image number data of at least one selected image in response to a reserve and register command.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: September 1, 1987
    Assignee: Sony Corporation
    Inventors: Satoru Maeda, Akihiko Tao
  • Patent number: 4691360
    Abstract: A hand held housing encloses a battery powered sound generator from which an audible voice simulating tone is transmitted through a tube when a push button switch is depressed also causing illumination of an indicator lamp. The tube is displaceable relative to the housing between extended and retracted positions. In the extended position, the tube may be inserted into the mouth.
    Type: Grant
    Filed: November 26, 1985
    Date of Patent: September 1, 1987
    Inventor: John W. Bloomfield, III