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| Number | Title | Issue Date |
| 5303305 | Solar powered hearing aid A hearing aid employs a permanent built-in rechargeable storage cell or battery, and a solar cell or other photo cell which powers the electronics of the hearing aid and recharges the storage cell. Favorably, a thin film amorphous silicon cell is employed... | 04/12/1994 |
| 5021613 | Ribbon loudspeaker A ribbon loudspeaker is provided by a first set of three rows of parallel spaced apart magnets disposed on a first plate, a second set of three rows of parallel spaced apart magnets disposed on a second plate, a diaphragm having a U-shaped electric curren... | 06/04/1991 |
| 4737992 | Compact electroacoustical transducer with spider covering rear basket opening A loudspeaker driver has a plastic basket having front and rear portions. The front portion is formed with six radial ribs extending between a central motor cup support and an annular rim. A cup-shaped front pole piece is molded into the pole support and ... | 04/12/1988 |
| 4731656 | Solid state imager with transfer smear suppression for moving and stationary images A field transfer imager is erased after every field transfer, prior to a new field of pixels-descriptive charge packet being accumulated in the successive charge transfer stages of the charge transfer channels of the image register. The image register is ... | 03/15/1988 |
| 4727583 | Telephone transducer with improved frequency response An audio arrangement includes a thin speaker/transducer positioned within a portable housing wherein the speaker cavity is dimensioned to move the resonant frequency of the speaker/housing combination up to approximately the free-air cutoff frequency of t... | 02/23/1988 |
| 4720746 | Frame transfer CCD area image sensor with improved horizontal resolution A frame transfer CCD area image sensor is disclosed having a plurality of spaced transfer channels having resolution cells defined by electrodes. Each resolution cell samples an image scene pixel. Channel stops separate the channels and are arranged to st... | 01/19/1988 |
| 4719512 | Noise cancelling image sensor A solid-state image sensor has an electrically floating carrier detecting electrode formed on a substrate, into which the signal carriers are transmitted, a sense amplifier circuit detecting the variation in a voltage of the electrode at the time of trans... | 01/12/1988 |
| 4719648 | Coin relay drive and switching circuit for paystation telephone instruments A telephone paystation coin refund and collect circuit for operating a coin relay with power obtained from a two-wire business telephone line. The circuit employed utilizes charge storage capacitors and MOS-FET transistors for current pulsing of the relay... | 01/12/1988 |
| 4717961 | Electronic still camera preventing premature removal of recording disk An electronic camera in which images are electrically recorded on a magnetic disk that can be removed from a receptacle that can be opened. The receptacle is prevented from opening when a picture is being taken and recorded, thus prevention incomplete rec... | 01/05/1988 |
| 4718082 | Modem for effecting full duplex asynchronous/synchronous digital data communications over voice grade telephone link A modem for interfacing digital data communications between a data processing terminal and a telephone link contains, in the modem front panel, a control switch configuration for effecting automatic dialling of a previously stored telephone number, thereb... | 01/05/1988 |
| 4716468 | Apparatus for controlling the electron beam in a television camera tube A camera tube device for use in, for example, a television camera comprises a cathode emitting electrons, and a first grid and a second grid having respective apertures for converging the electrons emitted from the cathode into a fine electron beam. The a... | 12/29/1987 |
| 4714963 | Asynchronous still timing for a video camera producing movie or still images A still video camera produces a movie image for previewing in an electronic viewfinder according to a specific image repetition rate and a still image for recording on a magnetic disk. In the movie mode, video signals are clocked from a solid-state, inter... | 12/22/1987 |
| 4715059 | Conversational video phone The present invention is a conversational freeze-frame video phone which transmits a source image over a standard telephone line in conjunction with audio voice signals. A camera is used to capture an image to be transmitted and the image is mapped onto a... | 12/22/1987 |
| 4714961 | Process and circuit arrangement for the remote pick up and reproduction of images of static or moving objects A process and apparatus for the remote pickup and reproduction of image of static or dynamic objects in which dark regions of a target provide outputs below a threshold value which are normalized or averaged through a divider during intervals of line scan... | 12/22/1987 |
| 4715062 | Speakerphone control circuit having low gain states and method for controlling gain of speakerphone A speakerphone control circuit is disclosed. The control circuit includes a first electronic switch coupled between the speakerphone microphone and a hybrid circuit coupled to the telephone line and a second electronic switch coupled between the speakerph... | 12/22/1987 |
| 4713697 | Camera apparatus The present invention provides a novel camera apparatus which can be discretely split into two parts; a lens barrel unit and a lens-barrel-support unit which allows the lens barrel unit to freely turn its direction. A built-in angular rate detector detect... | 12/15/1987 |
| 4712244 | Directional microphone arrangement A directional microphone arrangement has a number of discrete microphones each having an electrical output and elements for deriving first and second electrical signals which are 180° out of phase with respect to each other from the outputs of the microp... | 12/08/1987 |
| 4712245 | In-the-ear hearing aid with the outer wall formed by rupturing a two-component chamber A hearing aid device for processing sound, which comprises a device for transducing sound to an electrical signal, a device for processing the electrical signal, a device for powering and regulating the processing device, and a device for transducing the ... | 12/08/1987 |
| 4712246 | Puppet speaker A hand held speaker designed for use with a puppet and an ordinary cassette player, to give any puppet a voice. The device comprises a speaker uniquely enclosed in a fabric cover and attached to a four component telephone cable assembly. This assembly has ... | 12/08/1987 |
| 4712231 | Teleconference system A teleconferencing system for connection to telephone lines or other communication links. Directionally gated microphones receive local speech for audio send signal transmission to the far end on the telephone line, and audio receive signals from the far ... | 12/08/1987 |
| 4712234 | Multi-purpose modular jack connecting block A substantially rectangular modular jack connecting block suitable for use in the connection or mounting of terminal equipment using modular plugs, i.e., wall phones and the like, and including separable interior portions and add-on portions which transfo... | 12/08/1987 |
| 4712134 | Image reader with plural pickup elements reading overlapping image regions of an original image In reading of the original by a plurality of image pickup elements, the image is read by the image pickup elements covering overlapping image regions. Among those located within the overlapping portions, a pixel having small density change values with res... | 12/08/1987 |
| 4712138 | Low-noise apparatus for image pickup and combination of light and electric signals An image pickup-and apparatus comprising a pickup element including arranged non-destructively readable photoelectric conversion elements and an input device for inputting electric charges to the individual photoelectric conversion elements. The apparatus... | 12/08/1987 |
| 4712233 | Monolithic telephone subscriber line interface circuit The present invention is an improved subscriber line interface circuit which allows fast detection of an off-hook signal in the presence of a ringing signal during an answer mode while also permitting fast detection of dialing pulses during a calling mode... | 12/08/1987 |
| 4712135 | Image pickup apparatus An image pickup apparatus comprises a charge transfer type of image sensor having electrodes which can form a plurality of potential wells in each picture element of the photo-receiving surface including a plurality of picture elements; and a control circ... | 12/08/1987 |
| 4712232 | Multiple telephone jack slide assembly A multiple telephone jack slide assembly includes a jack support member for supporting a multitude of telephone jacks upon an electronic wire connecting system. The jack support member has a longitudinal channel formed by a slotted opening for slidingly r... | 12/08/1987 |
| 4710951 | Facsimile system A facsimile system includes a memory for storing a plurality of full dialing numbers at predetermined addresses of a plurality of abbreviated dialing numbers, a delivery unit for delivering to a telephone circuit one of the full dialing numbers which is r... | 12/01/1987 |
| 4710961 | Miniature hearing aid having a bindable multi-layered amplifier arrangement A miniature hearing aid comprises an input transducer (18), amplifier (19) and control elements (8, 10) as well as a current source and output transducer (20), where at least a part of the amplifier (19) is applied on mounting surfaces hinged together and... | 12/01/1987 |
| 4710817 | Solid state image sensor A solid state image sensor comprising a plurality of photosensors (8A) including a plurality of avalanche photodiodes (12A) arranged at least in the form of a one-dimensional array and delivering pulse signals each representing the number of photons incid... | 12/01/1987 |
| 4710962 | Signal control apparatus A signal control apparatus includes a circuit (26) for bearing a first characteristic to an original signal and outputting it as a first signal; a circuit (28) for bearing a second characteristic to the original signal and outputting it as a second signal... | 12/01/1987 |
| 4710953 | Speech control in a telephone station A speech control is provided for a telephone station and provides, dependent upon speech direction, the transmitting channel or the receiving channel being attenuated or the receiving channel being attenuated or the receiving channel or the transmitting c... | 12/01/1987 |
| 4709392 | Dome speaker with a diaphragm having at least one elongated cut-out portion A dome speaker comprising a dome-shaped diaphragm formed of a highly rigid material such as titanium or a titanium alloy, and having at least one elongated cut-out portion which varies the rigidity of the diaphragm and prevents a dip in the anti-resonance... | 11/24/1987 |
| 4709388 | Subscriber telephone line interface circuit with reduced power stand-by mode A subscriber telephone line interface circuit is provided with reduced power stand-by mode. For 90% of the time such circuits only have a function of monitoring the line. Means are described for considerably reducing the power consumption of the circuit d... | 11/24/1987 |
| 4707824 | Method and apparatus for cancelling echo A method and apparatus cancels an echo by using an echo replica generated such that a tap coefficient of an adaptive filter is sequentially updated, the echo being received from a transmitting end to a four-wire side through a two/four wire converter and ... | 11/17/1987 |
| 4707743 | Method and apparatus for image conversion with multiple exposures for filtering A single image is exposed a plurality of times on a solid state image sensor. Charges induced in each exposure and distributed accordingly are added upon shifting the charge positions in the image sensor and are extracted as electrical signals. The multip... | 11/17/1987 |
| 4707849 | High speed automatic test apparatus especially for electronic directory terminals A test apparatus for testing the operation of data transmission terminals such as videotex or directory terminals. The test apparatus comprises two adaptation plugs to be plugged respectively into a telephone plug and a terminals and peripherals adaptor o... | 11/17/1987 |
| 4707744 | Solid-state image sensor A solid-state image sensor including pixels including photodetectors (111-148) for detecting light signals and charge sweep devices (210-240) for transferring signal charges. The pixels are arranged in first and second directions orthogonal to each other.... | 11/17/1987 |
| 4706273 | Cellular telephone A compact cellular telephone for motor vehicles whose outer case is a vehicle sun visor. Operating controls for placing, receiving and processing incoming and outgoing calls are large and within the driver's normal field of vision so that the invention ma... | 11/10/1987 |
| 4706124 | Focus detecting device which varies between a varying state and a fixed state A focus detecting device comprises an image sensor; sharpness detecting means for detecting the sharpness of an image from image signals obtained from the image sensor; in-focus state identifying means for identifying an in-focus state of the image on the... | 11/10/1987 |
| 4706281 | Dynamic impedance element for a battery feed circuit Battery feed circuits function to supply a predetermined current to the communication pair and include circuitry to counteract the effects of balanced longitudinal signals which appear on the communication pair. Prior art battery feed circuits use either ... | 11/10/1987 |
