D/A conversion apparatus
A first object of the present invention is to provide a D/A conversion apparatus that can minimize the increase in the amount of circuitry if the number of output levels is increased. A second object ... Read More
Inventors: Tani, Yasunori; Miyada, Yoshinori; Hyobu, Kazuyuki;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Compact, directive, broadband antenna system having end loaded dipoles
What is claimed is: 1. A shortened multiband antenna comprising: a support mast, a horizontally polarized electrically center fed first dipole supported on said mast, and first and second end loading ... Read More
Inventors: Sletten, Carlyle J.;, Assignee: |
Offset voltage compensation for voltage comparators
An object of the invention, therefore, is to provide a voltage comparator circuit which mitigates the disadvantages of the prior art. In accordance with a first aspect of the invention, there is provi... Read More
Inventors: Gratrex, Alistair John; Hunt, Kenneth Stephen;, Assignee: LSI Logic (Milpitas, CA) |
Pen-recording apparatus with multi-station pen-holding head
OF THE PREFERRED EMBODIMENTS Referring first to FIGS. 1-11, there is shown a first preferred embodiment of the invention, wherein a pen-recording apparatus is generally indicated by reference numbera... Read More
Inventors: Onoda, Hiroshi;, Assignee: Brother Kogyo Kabushiki Kaisha (Nagoya, JP) |
Direct generation of ultrafast electrical pulses
Given this background, it is an object of this invention to provide a system that generates ultrashort electrical pulses which are independent of photoconductive carriers and thus independent of carri... Read More
Inventors: Grischkowsky, Daniel R.;, Assignee: International Business Machines Corporation (Armonk, NY) |
Optically switched microwave pulse generator
A signal generator capable of providing high energy, short pulse electrical signals in accordance with the principles of the present invention may comprise an electrical signal source coupled to a pho... Read More
Inventors: Riggs, Robert F.; Gilligan, Lawrence H.; Halsey, James D.;, Assignee: Sperry Marine Inc. (Charlottesville, VA) |
Method of scrambling PAL, SECAM and NTSC composite video signals and decoder of signals scrambled by this method
The subject of the present invention is a method of scrambling television images which makes the received images unrecognizable and very difficult to unscramble by an unauthorized user, and which is a... Read More
Inventors: Daniel, Patrick; Guillon, Jean-Claude;, Assignee: Laboratoire Europeen de Recherches Electroniques Avancees (Courbevoie, FR) |
Crossguide hybrid coupler and a commutating hybrid using same to form a channel branching network
The instant invention precludes the foregoing problems with a crossguide hybrid coupler comprising first and second rectangular sections of waveguide which intersect, forming two pairs of opposed corn... Read More
Inventors: Baldwin, Wiley M.; Kvinlaug, Hans A.; Wang, Han-Chiu; Young, William C.;, Assignee: Western Electric Company, Inc. (New York, NY); Bell Telephone Laboratories, Incorporated (New York, NY) |
Antenna coupler for portable cellular telephones
The invention having thus been described, the following is claimed: 1. A coupler adapted for inductively connecting a flexible coaxial cable extending from a remote external antenna on a motor vehicle... Read More
Inventors: Stephens, Gerald D.; Liu, Duixian;, Assignee: Valor Enterprises, Inc. (Piqua, OH) |
Planar antenna
FIG. 1 shows a top view of a planar antenna (1). The planar antenna (1) is manufactured using microstrip technology and the baseplate (2) is made of RT/duroid 5880, which is coated on its flat sides ... Read More
Inventors: Rothe, Lutz;, Assignee: Pates Technology GmbH (Lubeck, DE) |
Cover for a telephone handset
OF THE PREFERRED EMBODIMENT OF THE INVENTION Shown in FIG. 1 is a typical handset 10 that is intended for use on a telephone. The handset 10 is generally plastic, and includes a body 12 that has a sp... Read More
Inventors: Trowbridge, Jr., Allen R.;, Assignee: |
Radiation shield
Generally, the present invention provides a radiation shield which comprises a wrappable sheet of radiation-shielding material to which is affixed releasable contact-fasteners which are so dimensioned... Read More
Inventors: Sisson, Jr., Fred U.;, Assignee: Yanke; Charles H. (River Hills, WI) |
Patch-type microwave antenna having wide bandwidth and low cross-pol
We claim: 1. A patch antenna for transmitting and receiving microwave signals having a desired polarization, said antenna comprising: a dielectric substrate, a plurality of radiating patches on said s... Read More
Inventors: Dienes, Geza; Seal, William W.; Dearnley, Russell W.;, Assignee: Andrew Corporation (Orland Park, IL) |
Lap-top computer operators protective device
. There is much concern throughout the world that electro-magnetic fields radiation from the Lap-Top, Note-book and portable computers can cause genetic defects, cancer and other bodily harms when the... Read More
Inventors: Katz, Joseph M.;, Assignee: |
Cellular phone antenna reflector
What is claimed is: 1. A cellular phone antenna tubular reflector comprising in combination means for connection over a phone antenna and three distinct reflector components, an inner core component, ... Read More
Inventors: Nolan, James F.; Taylor, Douglas A.;, Assignee: |
Multi-staged antenna optimized for reception within multiple frequency bands
The present invention is directed to antennas exhibiting high front-to-back ratios and optimized for receiving signals in multiple microwave frequency bands, e.g., those frequency bands used by subscr... Read More
Inventors: Lange, Mark;, Assignee: California Amplifier (Camarillo, CA) |
Axial mode helical antenna
Accordingly, it is an object of this invention to reduce the size of a helical antenna. It is another object of the invention to reduce the size of a reflector of a helical antenna. It is a still furt... Read More
Inventors: Yuichi, Murakami; Kiyokazu, Ieda;, Assignee: Aisin Seiki Kabushiki Kaisha (Kariya, JP) |
Preferential deflection hinged housing configuration
In view of the foregoing, it is an object of the present invention to provide a hinge for a "flip"-style phone which is able to withstand repeated opening and closing of the flip portion without fract... Read More
Inventors: Weadon, Mark W.; Harms, Steven J.;, Assignee: Ericsson GE Mobile Communications, Inc. (Research Triangle Park, NC) |
Resistance measuring circuit
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. A resistance measuring circuit comprising a constant current source means, a first re... Read More
Inventors: Carmody, Joseph P.;, Assignee: Honeywell Inc. (Minneapolis, MN) |
Abrasion resistant ferro-based sintered alloy
A primary object of the present invention is to eliminate the drawbacks involved in the prior arts and provide an alloy having excellent thermal resistance, corrosion resistance and abrasion resistanc... Read More
Inventors: Hiraoka, Takeshi; Urano, Shigeru; Takeshita, Masajiro; Nakamura, Keiji;, Assignee: Nippon Piston Ring Co., Ltd. (Tokyo, JP) |
Diaphragm-type exposure control system having braking arrangement
The present invention is directed to apparatus embodied in a photographic camera having a system that, during an exposure control operation, operates in cooperation with an adjustable diaphragm lens u... Read More
Inventors: Takaoka, Yukio; Sawada, Yoshio;, Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha (Tokyo, JP) |
Camera aperture controlling brake
In view of the foregoing, an object of this invention is to provide a camera in which even if the lens stopping-down operation becomes slower due to variations in temperature or because the lens is ol... Read More
Inventors: Kawasaki, Masahiro; Takaoka, Yukio;, Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha (Tokyo, JP) |
Endoscope apparatus for three dimensional measurement for scanning spot light to execute three dimensional measurement
It is an object of the invention to provide an endoscope apparatus for three dimensional measurement, in which measurement can be executed with high spatial resolution without enlargement of a forward... Read More
Inventors: Hiyama, Keiichi; Kanno, Masahide; Hattori, Shinichiro;, Assignee: Olympus Optical Co., Ltd. (Tokyo, JP) |
Negative-image signal processing apparatus
Accordingly, an object of the present invention is to provide a processing circuit capable of realizing appropriate white balance of negative-image color signals. Another object of the present inventi... Read More
Inventors: Iwamatsu, Satoshi;, Assignee: Fuji Photo Film Co., Ltd. (Kanagawa, JP) |
Tube sheet pan and tilt camera platform
In general, apparatus for holding the camera adjacent a tube sheet having a plurality of tubes disposed therein and for providing pan and tilting movement of the camera, when made in accordance with t... Read More
Inventors: King, William E.; Calhoun, Gregory L.;, Assignee: Westinghouse Electric Corp. (Pittsburgh, PA) |
Motion control drive interface
A man to machine interface is disclosed for the control of video or motion picture camera movement for use with a camera aiming system which can reproduce a specific camera movement any number of time... Read More
Inventors: Fellinger, David;, Assignee: Ultimatte Corporation (Reseda, CA) |
Pan and tilt motor for surveillance camera
This invention relates generally to pan and tilt motors for surveillance cameras, and is more particularly concerned with a panning motor capable of rotation beyond one full rotation. The present inve... Read More
Inventors: Pagano, Raymond V.;, Assignee: |
Omnidirectional oscillator (glover gear)
In the first preferred embodiment of the invention, rotating motion is supplied by a cylindrical drive shaft. The end of the drive shaft which is remote from the motor means is provided with a bend, s... Read More
Inventors: Glover, Marvin J.;, Assignee: |
Stereoscopic radiographic inspection system
We claim: 1. A method of inspecting a test object in stereoscopic view, said method comprising the steps of: a) generating a beam of penetrating radiation from a single source, said single source prod... Read More
Inventors: Klynn, Lee M.; Barry, Richard C.; Buchanan, Robert A.;, Assignee: Lockheed Missiles & Space Company, Inc. (Sunnyvale, CA) |
Ferroelectric ceramic material
OF THE INVENTION The ferroelectric ceramic materials according to the invention will now be described in detail. The first ferroelectric ceramic material according to the invention is a Perovskite so... Read More
Inventors: Ushida, Yoshihisa; Hirai, Nobuki; Mase, Hiroshi;, Assignee: Mitsui Petrochemical Industries, Ltd. (Tokyo, JP) |
Radio 
