Abstract: A compact beacon-detector type IFF system to be carried by individual soldiers. The system consists of a beacon and a special purpose detector. The beacon is a small, light-weight, battery powered device that is worn on the soldier's web gear. The detector consists of a small flashlight-like device that can be hand held or mounted on a weapon, similar to a rifle scope. The beacon's signal is not visible to those using existing night vision equipment nor is it otherwise exploitable by a potential adversary. The system achieves its covertness through the selection of the optical wavelength used by the beacon. Further signature reduction is achieved through the use of a Low Probability of Intercept ("LPI") spread spectrum waveform as the beacon output. This waveform utilizes a spreading code to encode the beacon output signal.

Abstract: A system for determining range, particularly for robotic applications, is disclosed. The system preferably includes a single camera and at least two light sources. The lights can be turned on and off independently and are located at different distances from the target object. To determine the range, the intensity of each pixel is recorded with the front light on, then the intensity is recorded with the rear light on. The ratio of these two intensities is a unique function of range, regardless of the reflectivity of the object. If there is ambient light illuminating the object, its value must be subtracted from the intensity measurements prior to calculating the ratio.

Abstract: A light-weight, manually-operable security camera for photographing a person and a person's documentation in a single exposure. A camera with a first lens positioned for providing an image of a person standing in front of the camera and a second lens for providing an image of a document on a horizontal surface, and a drive mechanism for driving a single shutter and for advancing film in the film magazine, with the drive mechanism also including a lever for actuation by the person taking the photographs, and an extension spring and one-way clutch mechanism interconnecting the lever and the shutter and film advance means to assure that the lever is fully depressed and the film advanced, before a second set of photographs is attempted.

Abstract: A pattern recognizing content addressable memory system and method therefor, according to the present invention, "translates" patterns into a point in N-dimensional space. In both the analog and digital embodiments of the invention, data representing "items" or "discrete pieces" of reference patterns are stored throughout a highly-interconnected network of processing units. Data representing items of a pattern to be analyzed are input into the system and compared to each of the stored patterns. The distance between the point in N-space representing an unknown pattern and the point representing a reference pattern is inversely proportional to the degree of similarity between the unknown pattern and the reference pattern.

Abstract: A camera, typically a security camera utilizing film in a cartridge, with means for determining when the film in the cartridge has been exhausted. A radiation emitter with the wavelength of the emitted radiation outside the sensitivity range of the film, a detector for the radiation of the emitter, and a reflecting surface, with the reflecting surface on one side of the film and the emitter and detector on the other side of the film so that presence of film blocks the radiation path from the emitter to the reflecting surface to the detector. A control circuit for controlling camera operation, with the radiation detector output serving to shut off power to the motor when the film supply is exhausted.

Abstract: A mount for a surveillance camera or the like for moving the camera between an operating position and a servicing position for changing film or lens or the like. The camera and mount have interengaging support means and a fastener for joining the support means together for supporting the camera. A shaft is positioned in a mounting bracket, with the shaft having threaded sections projecting upwardly and downwardly from the mounting bracket. The support means is fastened to the upper end of the shaft with a detent member carried on the shaft for engaging a detent member in the bracket, with the shaft detent member being adjustable with respect to the camera position. The shaft is clamped to the bracket by a nut or the like on the downwardly extending section. With the detents engaged, the camera is initially adjusted to the desired operating position and then the support means is clamped at the upper end of the shaft.

Abstract: A camera in which a strip of film is progressively advanced from a feed roll to an exposed film roll and past an exposure location, and including a mechanism for intermittently turning an exposed film spool to successively advance different frames of the film to the exposure location, and a sensing element which is responsive to a change in diameter of one of the rolls of film to cause automatic adjustment of the spool turning mechanism in a manner changing the angle through which the exposed film spool is turned on each film advancing operation of the mechanism in accordance with changes in diameter of the film rolls to thereby compensate for that change in diameter and render the linear advancement of the film on successive operations of the mechanism more uniform than it would otherwise be.

Abstract: A camera having powered mechanism for advancing a strip of film past a location at which the film is exposed to take a series of successive pictures on the film, with sensing means being provided adjacent the film and acting to respond to its longitudinal movement, and with automatic control means being provided for actuation by the sensing means in a relation halting operation of the film advancing mechanism when the sensing means determine that the film has been advanced through a predetermined distance.

Abstract: A camera having powered mechanism for advancing a strip of film past a location at which the film is exposed to take a series of successive pictures on the film, with sensing means being provided adjacent the film and acting to respond to its longitudinal movement, and with automatic control means being provided for actuation by the sensing means in a relation halting operation of the film advancing mechanism when the sensing means determine that the film has been advanced through a predetermined distance.

Abstract: A camera which includes film transport means for moving a strip of film past a lens and shutter assembly in a stepwise, frame by frame sequence, with the film being maintained stationary when the shutter is in the open position. A toothed driven gear is in operative engagement with a film driven reel. A mutilated drive gear having a toothed portion with an end gear tooth and a smooth peripheral portion is rotated in time relationship with the opening and closing of the shutter. The driven gear contains a space between adjacent gear teeth (as by removing one gear tooth) whereby the end tooth of the drive gear is received in said space to facilitate the smooth "meshing" of the drive gear with the driven gear.

Abstract: A temporary sighting device which can be used on a surveillance camera during installation and adjustment, and which includes front and rear spaced apart, parallel walls, each of which contains a window provided with cross-hairs, whereby lines of sight extending through an intersection of the cross-hairs in the rear window and about the outer perimeter of the front window define the field of view of the camera. In the preferred form, the sighting device is produced from paper card stock and is foldable to a collapsed, flat position for shipping purposes.

Abstract: An antenna holding device is disclosed herein which comprises a first member defining a recess and a second member including a projection extending within the recess. A pivot pin hingedly connects the projection of the second member within the recess of the first member. A plurality of concavities are formed along the projection of the second member in an arc having the pivot pin as the center. The first member includes a cylindrical channel which extends radially from the pivot pin and communicates with the recess. A second channel in the first member extends perpendicular to and communicates with the first channel. A spherical ball is received within the first channel and may be moved to extend into the recess sufficiently to engage one of the concavities defined by the projection of the second member. A spring-biased, push button is received within the second channel and includes a concavity which may be positioned adjacent the first channel.