An input circuit is disclosed, which can be driven by a single power supply, and which can convert an ECL-level input signal falling to a negative voltage into a CMOS-level signal rising to a positive voltage, and can then supply this CMOS-level signal to an inner circuit. The input circuit comprises a transistor, a bias circuit, and a current-to-voltage converter. The emitter of the transistor is coupled to an input terminal for receiving a signal of a negative potential. The bias circuit appli...

An input device relating to the manipulation of data indicating the depressed state of key switches and to the transmission of data and adapted for picking up on-off data on switches provided at the points of intersection of conductors disposed in the form of a matrix and for transferring these data to a microprocessor.

An input device has a matrix input unit having a plurality of switches for inputting a pattern, a signal generator for generating signals identifying the actuation of the switches, and a discriminator responsive to the signals from the signal generator to discriminate the actuated one of the switches. The discriminator discriminates the actuated switch by checking an interval of the signals from the sequentially actuated switches.

An input device has an exciting coil for generating a predetermined exciting magnetic field. First and second coils are displaced from each other by a predetermined distance in a predetermined direction and capable of generating an induced electromotive voltage when excited by the exciting coil. Third and fourth coils are displaced from each other by a predetermined distance in the predetermined direction and capable of generating an induced electromotive voltage when excited by the exciting coi...

An input pen of data input tablet comprising a magnetic core which is positioned at the data input tablet side end of a pen case and passes a magnetic flux generated from the data input tablet, a conductive holder for holding this core, a detection coil wound around on the core, and a lead wire led out from the coil in close contact with the holder. The magnetic flux generated by the current flowing into electrodes formed in the data input tablet is detected by the detection coil, thereby detect...

An input apparatus capable of concurrently accommodating itself to any external signal from a different hydraulic control system or the like. The apparatus includes electrical load sensors each arranged on a push rod or block for detecting the amount of operation of a control lever to generate an electrical signal corresponding to the amount of operation of the control lever. Also, an input apparatus which is capable of concurrently responding to both a signal generated by itself and an external...

An input module used in a factory automation apparatus, which is constituted by a bidirectional conduction circuit for connecting to an AC power source or DC power source with both plus or minus common line, a constant current circuit for supplying constant current, and a load circuit accepting the constant current. When the voltage range is less wide, a bidirectional conduction circuit and a filter circuit are used.

An input pen for use in operating an operating surface of a capacitance-detecting coordinate device includes a rod-like body, a conductive section connected to one end of the body, a conductive ball joint mounted at the tip of the conductive section to turn relative to the conductive section, a conductive operating section integrally joined to the conductive ball joint and projecting from the tip of the conductive section, and a slide switch mounted at the inner tip of the conductive section. Th...

A container for dispensing sheet material from a roll received interior of the container, the container having a removable end wall for insertion of a roll of sheet material such as film. The container has a slot through a wall portion thereof from which the sheet material can be dispensed, the slot being formed by inwardly bent portions of the material which forms the container body. Removable seal members carried by the inwardly bent portions are coated with a fabric-like material which substa...

A circuit of complementary field effect devices whose logical input threshold voltage can be varied between levels suitable for TTL logic or CMOS or PMOS or other logic under control of an electrical signal in real time.