Abstract: A collapsible, storable information display screen for use with an electronic information processing device is disclosed which alleviates many of the problems associated with the smaller display screens. The display screen, when in use, is assembled in an electrically interconnected, mechanically stable, predetermined array, and when not in use, may be disassembled from said array and collapsed for compact storage.

Abstract: A detection circuit (30, 32) for carrying out a rapid search technique for locating the position of a stylus (12) relative to a display screen (10). A microprocessor (34) and related components select a group of light detectors (20, 28) that are positioned near the display screen (10). The summed output current of the selected group of detectors (20, 28) is monitored to determine whether the output of any detector in the selected group is reduced because of the presence of a stylus (12). Whenever the selected group shows such reduction in output current, that selected groups is divided into two subgroups. The subgroup having reduced current output due to the presence of the stylus (12) is further divided until the particular detector(s) having reduced output current is found, the position of the detector is correlated to the location of the stylus (12) relative to the screen (10).

Abstract: A display device for a microcomputer including a RAM for display, a ROM for a character generator, a changeover gate, a parallel/serial conversion circuit, a display circuit, and a display controlling circuit. A plurality of registers and a plurality of counters are incorporated in the display controlling circuit.

Abstract: A multicolor display lamp used as a display element of a dot-matrix display device. comprises light sources having different emitting colors arranged in four areas of a square case so that their optical axes are parallel to each other, and an optical system arranged frontwardly thereof so as to individually extend emitting rays of the light source.

Abstract: A portable computer includes a main body containing a large number of electronic parts, a display panel including a flat display device and pivotal between a first position overlapping the main body and a second position separated from the main body, a hinge mechanism for pivotally coupling the main body and the display panel, a lock mechanism which non-pivotally locks the main body and the display panel at the first position of the display panel, and can be manually released, and a photosensor unit for detecting the position of the display panel with respect to the main body so as to cut off power supply to the display panel when the display panel is located at the first position, and to allow power supply to the display panel when the display panel is located at the second position.

Abstract: A method and apparatus for indicating the position of a cursor on a surface in first and second different directions. The cursor is mounted on a member such as a gantry, and the gantry is guided for movement in the first direction on a carriage. The carriage is mounted for movement in the second direction on a member such as a rail. Radiation reflection strips extending and an acute angle with respect to one another are mounted on the gantry, and adapted to reflect light from a linear light source on said rail and extending in the second direction. Reflected light is sensed by a linear detector on said rail, for producing signals corresponding to the locations from which light was reflected. The coordinates of the cursor are determined by triangulation from these signals.

Abstract: The described memory is intended for video signals whose picture information is partitioned into fields and in which the information of the fields is arranged in lines. Separate field information components may be absent in the video signals to be stored. When fields are read from this store, they should be separated from one another by a vertical blanking interval. To avoid an elaborate write-read control for the memory and to simultaneously provide the possibility of connecting an interpolation circuit (IP) to it, with which the proximity values for the omitted fields are gained, a series arrangement of three shift registers (SR1, l SR2, SR3) is provided. A counter (ZW) generates and counts the shift pulses for the shift registers (SR1, SR2, SR3). Either the data of an incoming field (E1) or the data (E3) of the field stored in the third shift register (SR3) are applied to the first shift register (SR1) via a first controllable switch (U1).