A method and apparatus are disclosed for addressing a character generator memory containing symbols common to two or more languages in a common area of the character generator memory. Symbols which are special to the particular language being displayed are stored in one of a plurality of special symbol areas of the character generator memory. One of the special symbol areas contiguous with the common area is identified as a default symbol area. The proper special symbol area of the character gen...

In the field of raster scan computer graphics display equipment, an apparatus for the transformation of picture information specified as line segments defined in terms of a two dimensional planar coordinate system describing the display raster into a form convenient for display on said raster, wherein for each scan line to be displayed the appearance thereof being determined by passing pieces of information describing line segments together composing the picture from a display file memory, sendi...

A circuit and method for displaying characters in a point matrix on a video screen raster with improved resolution utilizes first and second character generators each storing a portion of the character points to be displayed. Each character generator provides an input to an associated shift register, and the shift registers are controlled by complementary clock pulses so that the outputs are shifted by one-half of a bit representing a character point in the matrix. The outputs of the shift regis...

A video system for assisting automobile traffic is provided. Radio frequency signals concerning traffic flow and build-up are transmitted to a receiver unit contained within a motor vehicle. The receiver unit contains road map information stored in a memory and only information relating to traffic flow is transmitted. The receiver superimposes the traffic flow information with the map information to produce a composite image of traffic conditions. The traffic flow informationis updated and store...

An arc-scanned sector cathode ray tube display system achieves constant writing speed by developing trigonometric X and Y deflection signals with amplitude linearly decreasing and scan rate linearly increasing as arcs are drawn from periphery toward apex of the display sector. Video/deflection synchronism is achieved by development of a video clock pulse train comprised of selected pulses from a clock source by means of which displayed video bits are shifted from rho-theta formated storage on a ...

The process is based on the time-evolutive nature of each of the elements for previously determining a subdivision of the stored image into separate zones, corresponding with the distribution of the elements in the image, and for allocating to each zone a given periodic refreshing rate (between one and N image display cycles) adapted to the evolution characteristics of elements included in the zone in question, so that an integral refreshing of the image is obtained every N cycles.

A font display and text editing system is disclosed. The system includes a display medium for displaying text characters. A memory stores digital information describing the shape of each alphabetical character of a plurality of sets of alphabetical characters, each of the sets of alphabetial characters defining a respective font. An input device sequentially generates a first signal identifying one of the alphabetical characters as a base character and a second signal identifying a different one...

A computation device comprising an arithmetic and logic unit with an accumulation register and a condition register to store information bits of a current operation in the arithmetic and logic unit comprises circuits to determine which one of two operands applied as inputs to the arithmetic and is the smallest or the greatest and comprises circuits to write the smallest or the greatest operand thus determined in the associated accumulator register.

A bodily state detection apparatus comprising a CCD camera, an infrared LED device, a pickup image memory, a pupil extraction circuit and a bodily state judgment circuit. The CCD camera inputs images of a predetermined area including the subject person's face. The infrared LED device illuminates the subject person in such a way that the optical axis of the camera and the direction of the illumination coincide with each other. The pickup image memory stores temporarily the output data of the CCD ...

A resonant circuit tuning system and a method for tuning are provided. The resonant circuit tuning system may include a resonant circuit having a first capacitive element in series between a transmitter and an antenna coil and a second capacitive element in parallel with the transmitter and the antenna coil. At least one of the first capacitive element and second capacitive element may be configured to be varied. The resonant circuit tuning system also may include a controller for controlling a ...