Abstract: In a magnetic recording and reproducing apparatus for recording and reproducing information by pulling out a tape from a cassette by revolving a pair of tape pull-out members in opposite directions with a tape loading mechanism and by wrapping the tape around a rotary drum, a tape pull-out aiding member is arranged in combination with one of the tape pull-out members; and a differential mechanism is arranged between the tape pull-out aiding member and the tape pull-out member to cause the two members to revolve at different angles of revolution in such a way as to give a desired angle of inclination of the tape relative to the rotary drum.
Abstract: An optical apparatus comprises a zoom lens for effecting magnification change, a focusing lens for effecting focus adjustment, a first motor for moving the focusing lens, a second motor for moving the zoom lens, and detecting mechanism for detecting the reference positions of the focusing lens and the zoom lens, the detecting mechanism being used in common to the two lenses.
Abstract: A tripod applicable to an optical apparatus having a center of gravity the position of which is separate from a position in which the tripod is to be mounted, a supporting portion for supporting a plurality of leg portions is arranged to be movable from a first position to a second position closer to the position of a center of gravity of the optical apparatus mounted to the tripod than the first position.
Abstract: A data processing system automatically maintains records of respective locations of a plurality of objects in real time. Each of the objects has secured thereto a respective object marker which transmits an identification signal that is unique to the respective object. Sensor devices are installed at respective doorways of a building. Each sensor device receives the identification signal transmitted from the object marker as the respective object is moved through the doorway. The sensor device detects from the identification signal a direction in which the object is being moved through the doorway and generates a detection signal indicative of the detected direction of movement and also indicative of the identification signal for the object. The data processing system receives the detection signals from the sensor devices and maintains a data record with respect to each of the objects indicating the present location in the building of each of the objects.
May 9, 1995
Date of Patent:
January 13, 1998
Sensormatic Electronics Corporation
Touraj Ghaffari, Mark Grimes, Kevin D. Romer
Abstract: An optical apparatus having a light-quantity control device includes:a) a rotating member having a plurality of magnetic poles;b) a stator having a plurality of magnetic pole sections opposed to the rotating member;c) a coil for exciting the stator;d) an input device for inputting driving speed information as the driving speed of the rotating member;e) an output device for outputting to the coil a driving signal for rotatably driving the rotating member less than one full rotation thereof on the basis of the driving speed information;f) a detecting device for directly detecting a movement state of the rotating member and outputting a detection signal which varies approximately linearly with the position of the rotating member representing movement state information;g) a forming device for forming rotating speed information of the rotating member from the detection signal;h) a correcting device for correcting the driving speed information by the use of the rotating speed information, the correcting device prov
Abstract: A transmitter circuit drives a transmit antenna for an electronic article surveillance system with an alternating drive signal. The transmitter circuit includes a DC power supply which converts an AC input power signal into a DC power supply potential, a switching circuit which forms an alternating signal from the DC power supply potential, and a transformer which couples the alternating signal to the antenna. The transformer provides isolation for the transmit antenna, as well as voltage step-down to a desired amplitude for the antenna driving signal. The DC potential supplied to the switching circuit may be regulated or unregulated.
Abstract: An image pickup apparatus capable of performing shooting action control appositely to each of different modes of shooting such as moving image shooting and still image shooting includes an instructing part for selectively instructing the apparatus to perform moving image shooting or still image shooting, and a control part for variably setting control characteristics for various control actions such as backlight correction control, white balance control, automatic focusing control, shutter speed control, etc., according to the instruction of the instructing part.
Abstract: In a camera arranged to use a film cartridge having a rotary member which rotates in association with transport of a film and which is provided with a code indicative of information about the film, a rotating state of the rotary member is detected in rewinding the film, so that the film can securely be wound into the film cartridge.
Abstract: An audio processing apparatus is arranged to be capable of attenuating only an unnecessary wind noise without cutting off the low frequency part of sounds picked up. In the apparatus, a first low frequency band signal and a first high frequency band signal are extracted from a signal obtained by subtracting a delayed right-side audio signal from a received left-side audio signal. A second low frequency band signal and a second high frequency band signal are extracted from a signal obtained by subtracting a delayed left-side audio signal from a received right-side audio signal. An addition signal is formed by adding together the extracted first low frequency band signal and the extracted second low frequency band signal. The extracted first low frequency band signal and the addition signal are added together in an arbitrary variable addition ratio to obtain a first variable addition signal.
Abstract: A manufacturing method for a separator plate for a molten carbonate fuel cell and separator plate made by the method. The separator plate comprises Ni-clad stainless steel. Aluminum is brought onto the wet seal area of the separator plate by high-velocity oxygen flame spraying. In addition, an intermetallic phase of the aluminum and the base metal is produced. The base metal can be both stainless steel or nickel.
Abstract: An electronic article surveillance system includes a signal generator for generating an interrogation signal in an interrogation zone, an antenna which receives a signal present in the interrogation zone, and interference cancelling circuitry for cancelling interference components in the signal received by the antenna. The interference cancelling circuitry includes a hybrid interference component cancelling loop in which a digital interference estimate signal is formed and converted into an analog estimate signal, and the analog estimate signal is subtracted from an input analog signal. The resulting difference signal is processed with a hybrid automatic gain control loop. A digitized signal, formed from the resulting difference signal, is subjected to digital interference cancellation processes in addition to the hybrid interference component cancellation process.
June 6, 1996
Date of Patent:
December 16, 1997
Sensormatic Electronics Corporation
Thomas J. Frederick, Steven Goodrich, Dale R. Bettine
Abstract: A camera, which includes a first lens group for a zoom operation, a second lens group for a focus adjustment operation, a motor for moving the first and second lens groups parallel to an optical axis, a sharpness signal detection circuit for extracting a sharpness signal according to a focusing degree from a video signal of an object image formed via the first and second lens groups, and a focus adjustment circuit for performing the focus adjustment operation on the basis of the sharpness signal output from the sharpness signal detection circuit, further includes a sharpness signal detection region changing circuit for changing a region for extracting the sharpness signal at a predetermined period within a picture obtained from the video signal.
Abstract: An EAS system employing a central station having a central processing unit and a local station having a microcontroller and in which the functions necessary for detecting EAS tag signals and generating alarms are shared by the central station and the local station. A switch is further provided at the local station for automatically reconfiguring the receiver antennas based on antenna configuration instructions generated at the central station responsive to certain conditions at the location being monitored.
Abstract: A camera-integrated video recorder in which a camera portion and a recorder portion are disposed in a single casing is arranged in such a manner that a grip portion having a viewfinder and a control portion for controlling the recorder portion is rotatably and detachably fastened to the casing. The grip portion acts as a remote control device for remote-controlling the camera portion and the recorder portion when it has been detached from the casing. The casing has an image transmission circuit for transmitting monitor image information to the viewfinder in the grip portion.
Abstract: A cover of an apparatus is composed of a metal part and a synthetic resin molded part. An edge part of the metal part located at a boundary between these cover parts is subjected to a brightening cutting process such as diamond cutting which gives a color tone different from the colors of these cover parts, so that a difference in color between the two cover parts can be made to be less conspicuous.
Abstract: A video camera comprises a solid state image pickup device, a pulse generator to supply a transfer pulse to read out signals of the solid state image pickup device, A/D converters to convert the signals read out from the solid state image pickup device into the digital signals, and a dynamic RAM which operates in the high speed page mode to store the digital signals. The video camera has a reading circuit in which the time which is required to read out at least one line of the solid state image pickup device is shorter than the maximum permission time to write into the same RAS address in the high speed page mode and the period of the transfer pulse is integer times as long as the period of the original oscillation clock of the pulse generator.
Abstract: In a recording and/or reproducing apparatus which comprises reel mounts which are disposed on a chassis so that they can respectively engage with tape reels, a reel mount cover secured to the chassis to cover a reel mount driving part for driving the reel mounts, and a tape end detecting element disposed on the reel mount cover, contact portions for providing a connection between a wiring extending from the tape end detecting element on the reel mount cover and a wiring provided on the chassis are provided between the surfaces of abutment between the reel mount cover and the chassis, and the reel mount cover is fixed to the chassis by fastening the surfaces of abutment in a portion between the contact portions and an abutment start portion positioned in the vicinity of the contact portions.
Abstract: A video camera system includes a video camera, a waterproof case for containing the video camera, a detecting part for detecting a water leak into the case, and a display part for displaying warning of the water leak according to an output of the detecting part. Further, a waterproof case includes a waterproof case part capable of removably containing a camera, a detecting part for detecting a water leak into the case part, and a transmission part for transmitting an output of the detecting part to the camera.
Abstract: A video surveillance system has a camera equipped with a fisheye lens having a substantially hemispheric field of view. The system implements operations equivalent to the panning, tilting and zooming of a conventional camera without the use of moving parts. The lens is mounted vertically above a plane under surveillance. The camera produces a fisheye image made up of a plurality of pixels. The fisheye image is distorted due to the properties of the fisheye lens. The system corrects the distortion by mapping the pixels of the fisheye image to coordinates produced by selecting a particular part of the fisheye image to be viewed. This allows an operator to select parts of the field of view of the fisheye lens and view them as if they had been produced by a camera having a conventional lens being panned tilted or zoomed. The fisheye image formed by the camera is split into four separate image components carried by four bundles of optical fibers.
July 27, 1995
Date of Patent:
November 25, 1997
Sensormatic Electronics Corporation
Steve W. Schieltz, Terry Laurence Glatt, Carl Kupersmit