Input keyboards are disclosed for typewriters, computer terminals, and other devices processing alphanumeric information that maximize entry rates and stroking accuracy, and minimize finger motions and the time needed to master the keyboard. A general method is also disclosed of designing such keyboards for any alphabetic language. The invention places the space key and four common vowels directly under the fingers of the left hand, and five common consonants directly under the fingers of the ri...

An input circuit for use in the selection of one of n .times. m inputs signified by the closure of one of n .times. x m switch units. Each switch unit is a single pole switch connected between one of a first set of n terminals to which a first potential is applied and one of a second set of m terminals to which a second, different potential is applied. A circuit is provided for detecting the flow of current upon closure of a switch and for applying a potential to one of a third set of n terminal...

An input circuit has at least an enhancement type first MISFET incorporated between an input terminal and a power supply terminal for the input circuit. A gate electrode of the first MISFET is connected to the power supply terminal, and at least a second MISFET is incorporated between the input terminal and a gate electrode of a third MISFET constituting the input circuit. A gate electrode of the second MISFET is connected to the power supply terminal, whereby the dielectric breakdown of the gat...

An input screen of an X-ray fluoromultiplier tube, that is, an X-ray image intensifier tube, wherein an evaporated aluminum film is interposed between a substrate and a fluorescent substance (cesium iodide) film is disclosed. The input screen according to this invention does not undergo the "charge-up" attributed to the exfoliation or cracks of the cesium iodide film, and can therefore present a picture of extraordinarily high quality.

An input converter circuit for producing a logic level indication of the on or off condition of an input. The input may be AC or DC at any reasonable level. A bilateral photocoupler output is applied to an operational amplifier integrator, which establishes the integration time of the signal. The amplifier output is coupled to a Schmitt trigger having threshold levels at about one third and two thirds of the power supply voltage. The output of the Schmitt trigger provides a logic one output if t...

An input device is provided with simplified operation for correcting errors. One key is adapted to perform a plurality of key functions, for instance, one function feeds a recording medium backwardly, another prints an error mark. Such key is provided with a bridge member which is interposed, in bridge configuration, between the bottom part of the key top and switch contact member located over other switch contact elements in a pair with said switch contact members. When one key is depressed, a ...

An input device includes an input pen that is capable of detecting an amount of a pen pressure applied to a pen tip. The input pen has a resistance film that alters a resistance vale thereof according to a touch area, a spring that alters the touch area between the spring and the resistance film, a pen pressure detecting circuit that detects the amount of the pen pressure applied to the pen tip based on the touch area, and an infrared output circuit that outputs the amount of the pen pressure to...

An input system includes an information generation part which generates input information based on a given input operation, a transmission part which transmits signals generated by having a plurality of different carrier frequencies modulated with the input information, and a reception part which receives the transmitted signals and demodulates the signals into the input information.

In an input device for use in an electronic computer or the like, it is preferred to transfer the informations fed from a plurality of the information sources to the following stages at the predetermined periods, and in the event that two or more informations are applied to the input device simultaneously in an overlapped condition, it is necessary to transfer each of the informations independently to the following stages to prevent erroneous operations. In accordance with the input device of th...

An input apparatus is capable of recognizing an order of selection of a plurality of options displayed in a display region. The input apparatus includes a display unit having the display region with a predetermined coordinate system set thereto, an operating unit including a select key assigned to a direction parallel to one reference axis set in the display region, and a display control unit. The display control unit first causes a predetermined number of options to be displayed in the display ...