Abstract: An optical path blockage detecting device includes optical conductive members located between light emitting elements and light receptor elements and extending parallel to optical paths defined between the light emitting and receptor elements. Each optical conductive member is combined with a light absorbing member which absorbs undesired beams of light so as to improve the optical directivity of incident light and improve the signal-to-noise ratio of the device.

Abstract: A matrix driver is provided, comprising a plurality of light emitting diodes, energizing means for successively pulse-driving and scanning the light emitting diodes, and control means for instructing the energizing means about the sequence of scanning, characterized by protective means for preventing one specified diode among the light emitting diodes from being continuously pulse-energized.

Abstract: An optical coordinate input device wherein there is no possibility of operation in error or of destruction of a light receiving element and a correct coordinate signal can be produced even if external light of a high intensity acts upon the light receiving element. The device comprises light amount adjusting means of the transmissive type located in front of light receiving elements, and controlling means for controlling the amount of light to be passed through the light amount adjusting means in response to an amount of light incident to the light receiving elements. Thus, if there is the possibility that an output value of the light receiving elements may reach a saturation condition due to external light of a high intensity, the light transmittivity of the light amount adjusting means is lowered to decrease the amount of external light to be received the light receiving elements.

Abstract: An optical coordinates input apparatus includes pairs of first light emitting elements and first light receiving elements, a plurality of pairs of second light emitting elements and second light receiving element having a light path intersecting a light path of the first light emitting elements and the first light receiving elements, and a filter section disposed on the front side of the light paths of the optical semiconductor elements for passing therethrough a light in the paths. The apparatus further includes a device from preventing a flow of an air containing dust from entering a space between the optical conductor elements and the filter section.

Abstract: A remote control device comprises a control input unit, a transmission unit, a receiving unit, a reply unit and a command control circuit. The control input unit outputs a control signal. The transmission unit stores the control signal in a first memory circuit and transmits a light signal based on the control signal. A main device controlled by the remote control unit receives in a first receiver circuit and stores in a second memory circuit the signal from the transmission unit. The main device has a reply signal unit for transmitting a return signal based on the signal from the receiving unit to a second receiver circuit of the remote control device. The command control circuit compares the signal received by the second receiver circuit and the signal stored in the first memory circuit. When these compared signals are in agreement, the command control circuit outputs to the transmission unit a signal based on the signal stored in the second memory circuit thereby to cause the operating device to operate.

Abstract: A scanning system for an optical type coordinate input device comprises a plurality of light emitting elements and photoreceiving elements opposed to each other and a coordinate detection section for successively scanning a plurality of light emitting elements, wherein the light emitting elements in coordinate detection section are scanned while disposing a predetermined scanning interruption period. Since the temperature rise in the casing containing light emitting elements and like other elements can be reduced, erroneous operation of the device can be avoided, and element life can be increased.

Abstract: A photodetection type coordinate input device includes a frame having a substantially rectangular opening formed in the center, a light-emitting element array composed of a plurality of light-emitting elements disposed along each of the two sides of the opening of the frame, a light-receiving element array composed of a plurality of light-receiving elements disposed along each of the two sides which respectively oppose the first two sides, and a filter provided in a part or the whole area of the opening and adapted to transmit desired light alone. The opening of the frame is disposed in front of a display to form a plurality of optical paths by pairs of light-emitting and -receiving elements, respectively, in front of the display screen of the display, and a position at which optical paths are blocked is detected to specify a coordinate position on the display screen, thereby inputting the coordinate position.

Abstract: An optical connector composed of a plug lock member provided on the end of a light guide pass and a plug attachable to/detachable from the plug lock member, which is characterized by a lock member provided on either the plug lock member or plug to be pressed onto a member to be held, a push member movable in the direction intersecting the attaching/detaching direction of the plug, push portions provided on the push member for pushing the lock member onto the member to be held, and a click mechanism provided on the push member, wherein when the member to be held is pressed by the lock member the click mechanism operates to lock the push member, whereby its locked state is maintained stable and can not be released even subjected to continuous vibration or pulling force.

Abstract: An optical coordinate input device comprises a number of light emitting elements and corresponding light detecting elements disposed in a plurality of linear arrays. A light ray selection member is provided such that only the light rays from the light emitting elements are detected by the light detecting elements. The light ray selection member is an optical semiconductor element light obstructing holder. The optical semiconductor elements have terminals projecting from the bottom surface of their main body which are fixed to a base and have a light emitting function or light detection function. In addition to these, a pair of mold bodies extending in the array direction of the optical semiconductor elements is combined, and this array of elements can be integrally fitted therein while being provided with a pressure portion elestically contacting the bottom surface of the main body of each element.

Abstract: A filter for a photoelectric touch panel disposed in front of arrays, formed on a framework on the circumference of a screen, of aligned light emitting elements and photosensitive elements characterized in that the same is arranged to be slanted to spread outward.

Abstract: A filter of a photoelectric touch panel which is disposed on the front of an array mounted with light emitting elements and/or light receiving elements and disposed around a faceplate in the form of a frame, and characterized in that converging sections are formed on the filter at least at positions corresponding to the individual elements, thereby eliminating preparation of converging lenses.

Abstract: A filter for a photoelectric touch panel disposed in front of arrays, formed on a framework on the circumference of a screen, of aligned light emitting elements and photosensitive elements characterized in that the same is provided with protrusions around the center of its portions in front of these arrays.

Abstract: An arrangement structure of optical elements is characterized in that light emitting and/or light receiving optical elements are mounted on a substrate in a zigzag fashion, whereby the resolving power of the arrangement can be enhanced.

Abstract: A photoelectric touch panel characterized in that one side is provided with a substrate having light emitting elements and light sensing elements mounted thereon and an opposing side of the touch panel has a multi-directional reflecting surface for collecting dispersed portions of the light emitted by the light emitting elements. The multi-directional reflecting surface is joined with a photo-conductive body which guides the collected light back to the light sensing elements at the first side of the touch panel.

Abstract: A device for sequentially feeding a plurality of disk-shaped recording media in an apparatus for performing a data recording or reproducing operation on a rotating disk-shaped recording medium. The device includes loading members, each of which holds one disk-shaped recording medium and each of which is rotatable about a common axis. A swinging mechanism swings a selected one of the loading members about the common axis through a predetermined angle to a feeding position. A lifting apparatus lifts the disk-shaped recording medium selected by the selected one of the loading members into a position at which the data recording or reproducing operation can be performed. A microprocessor controls the operation of the swinging mechanism and the lifting apparatus. In this manner, a plurality of disk-shaped recording media can be sequentially subjected to a data recording or reproducing operation without the intervention of an operator.

Abstract: An optical coordinate input device comprises a plurality of light emitting elements arranged so that their optical axes intersect mutually, a plurality of light receiving elements arranged so as to receive the light signals of the light emitting elements, a drive circuit for turning on/off the light emitting elements on the basis of a drive signal to cause them to provide the light signals, a first switching circuit for switching the output given from the drive circuit to among the light emitting elements, a second switching circuit for switching the signals given from the light receiving elements in correspondence with the light emitting element lighting, and a waveform shaping circuit for regulating the signal given from the second switching circuit to a certain voltage level on the basis of the drive signal.

Abstract: An automatic gain control (AGC) detection circuit. The AGC detection circuit includes; a current source, first to fourth transistors whose emitters are connected in common to the current source, a reference voltage source for supplying the bases of the first and the second transistors with a reference voltage, input terminal means connected to the bases of the third and the fourth transistors for receiving an input signal, a power supply source for supplying the first to fourth transistors with a power supply voltage, first collector load means connected between the power supply source and a node connecting the collectors of the first and second transistors in common, second collector load means connected between the power supply source and another node connecting the collectors of the third and fourth transistors in common, and an output terminal means connected between the nodes for taking out an automatic gain control detection output.

Abstract: A touch-panel input device of the photoelectric system where a ray scans above a display face of a display unit. Respective coordinate values directed by bringing a finger tip onto the display face are detected by means of interrupted rays and displayed successively on the display face in the form of an index. The detected coordinate values are input into a processor unit when switching means is pushed by the finger tip.

Abstract: A continuous-driving apparatus is so constructed that a recording medium disks (30a) are mountable on loading sections (4a), (4c) through cut portions (6a), (6c) and openings (5), (9) formed at the outer circumferential parts of rotating bodies (1), (3) which have a common center of rotation and are arranged in a juxtaposition; and the rotating bodies (1), (3) are caused to relatively rotate so that the specified cut portions (6a), (6c) are brought into an overlapping position with respect to the openings (5), (9): and the recording medium disk (30a) is transferred to a predetermined position by means of an elevating unit (10).

Abstract: A wave-shaping circuit for receiving an electrical signal from a photosensitive device, for example, and delivering a rectangular output does not use an expensive DC amplifier but comprises a comparator, a pair of diodes connected between first and second input terminals of the comparator in an antiparallel relation, and a capacitor placed between the first input terminal of the comparator and the signal input terminal of the circuit for filtering out DC component. A combination of a zener diode and a capacitor is connected to the second terminal of the comparator to establish a threshold level, with which the signal level applied to the first input terminal of the comparator is compared.