A spiral scan generator utilizes a read-only memory having stored therein a sequence of binary signals representing the .+-..DELTA.X and .+-..DELTA.Y values obtained by calculating the positional changes required to move from one end to the other along a particular spiral path. The binary signals are converted to a corresponding number of pulses which define intermediate locations, and these pulses are fed to up and down counters whose recorded counts are converted into analog voltages for contr...

A central processor of the type which controls the operation of telephone exchange subsystems to establish requested service between telephone subscribers in response to a plurality of addressable multiple bit operational codes wherein each of the subsystems is connected to the central processor by a common data bus and assigned a discrete subsystem address for enabling the addressing of each subsystem and wherein one of the subsystems is a program memory containing the plurality of operational ...

In a scan system copy plane a photocopier, and endless cable mounted on two, spaced pulleys carrying pins, each of which engages a spring biased arm mounted on a carriage carrying lights and a first mirror. A second carriage with two mirrors is mounted through a pulley to the first carriage for parallel movement at one-half speed. Images from a copyplane are reflected through the three mirrors, then through a lens to a photosensitive surface. The pin comes around one pulley to engage the arm and...

A lens scan mechanism having a scan rate adjustment member which is pivoted about a fixed point. The adjustment member receives its pivoting motion from a drum cam through a spring loaded cable. By providing lenses of different magnification with an attachment which contacts the pivoted adjustment member at different points, adjustment of the lens scan rate is achieved automatically with changes in lens magnification.

This invention relates to an optical display system and more particularly to an improved B-scan ultrasonoscope. The apparatus may be used for scanning tissue, for example, the human eye and detecting differences in density of various embedded substances and their relative depth and displaying the information pictorially in color. The aforementioned abstract is neither intended to define the invention of the application which, of course, is measured by the claims, nor is it intended to be limitin...

A digital scan converter employed in a sector scanning ultrasound diagnostic device has a digital memory for storing a received image signal in a cell whose address corresponds to the picture element and a system controller for reading out a signal from the memory by linear scanning. The digital scan converter is further provided with a signal generator and an adder for shifting the level of the image signal by a predetermined value when the signal is written in the memory, a level detector for ...

Apparatus for displaying the information represented by data samples occurring along radial lines at display points arranged in rows and columns wherein intermediate interpolated data values are derived at the intersections of a row containing a display point for which a final data value is sought with radii on either side of the display point and interpolating the first and second intermediate interpolated data values so as to derive a final interpolated data value at the angular position of th...

A mirror assembly for scanning incoming radiation from a scene onto one or more radiation detectors. The mirror assembly includes a cylindrical mirror arrangement having at least two mirror faces arranged around a central axis. Each mirror face is made up of a plurality of planar mirror segments. The mirror segments are arranged to form a stepped structure in which each mirror segment in a given mirror face is parallel to each other mirror segment in the mirror face.

The present invention in general relates to a television camera for digital on-line image processing, comprising an optical imaging system which images an object area sensed by the camera into an image area adapted to be scanned element by element, and a processing circuit which produces video signals from the signals obtained with the scanning, the camera comprising a line sensor arranged in the optical image area, the line sensor being composed of sensor faces of a row of optical-electrical tr...

A scan conversion circuit for a thermal imager device in which a field is scanned by a parallel-series array of infra-red detectors swept broadside over the field to produce a band of parallel I.R. signals. The signals from the array of detectors are sampled at high speed in a pattern which traces each parallel line of detectors in turn. A C.R.T. is scanned in a similar pattern, the pattern being repeated at high speed with successive lateral displacements corresponding to the rate at which the ...