Abstract: An electromagnetic valve control device includes a control signal generator to, through feedback control involving an environmental coefficient, generate a control signal intended for at least one electromagnetic valve and corresponding to a target electric current value, a coefficient determiner to determine an environmental coefficient during a learning period from a start of a driver operation to an end of a predetermined time, and an operation limiter to limit respective operations of the at least one electromagnetic valve and a gear transmission during the learning period.

Abstract: A continuously variable powertrain device for a work vehicle includes a continuously variable transmission to output a continuously shifted motive power while continuously varying a speed of a motive power received from an engine, a planetary transmission to receive the motive power from the engine and the continuously shifted motive power and to output a compound motive power, a planetary clutch to switch a shift level of the planetary transmission a forward-reverse direction switch to receive the compound motive power and to output either a forward motive power or a reverse motive power, rotation detectors, and a powertrain controller.

Abstract: A work vehicle includes a restrainer vehicle speed setter to set a restrainer vehicle speed, and a switch restrainer to permit switching of the forward/backward travel switching device while a detected vehicle speed is lower than the restrainer vehicle speed and prevent switching of the forward/backward travel switching device while the detected vehicle speed is a high speed not lower than the restrainer vehicle speed.

Abstract: A work vehicle includes a controller configured or programmed to include an input revolutions number calculator to calculate an input revolutions number, and a vehicle speed controller switchable between a first vehicle-speed control mode and a second vehicle-speed control mode. In the first vehicle-speed control mode, the vehicle speed controller is configured or programmed to control a vehicle speed of the work vehicle based on a value detected by an input rotation sensor. In the second vehicle-speed control mode, the vehicle speed controller is configured or programmed to control the vehicle speed based on a value calculated by the input revolutions number calculator.

Abstract: A continuously variable powertrain device for a work vehicle includes a hydraulic static transmission to output a continuously shifted motive power while continuously varying a velocity of a motive power received from an engine, a planetary transmission to receive the motive power from the engine and the continuously shifted motive power and to output a compound motive power, a pressure detector to detect a hydraulic pressure in a closed circuit of the hydraulic static transmission, a planetary clutch mechanism to switch a shift level of the planetary transmission, and a powertrain controller to control actuation of the hydraulic static transmission and the planetary transmission based on a shift command.

Abstract: An electromagnetic valve control device includes a current gear ratio obtainer to obtain a current gear ratio as a ratio of an output revolutions number of a driver and an output revolutions number of a transmission, a current electric current value obtainer to obtain a current electric current value as a value of an electric current to be inputted to a first electromagnetic valve or a second electromagnetic valve, and a switching controller to, based on the current electric current value and a gear ratio difference as a difference between a target gear ratio and the current gear ratio, perform electromagnetic valve switching control to switch between use of the first electromagnetic valve to control a pump swash plate and use of the second electromagnetic valve to control the pump swash plate.

Abstract: A dot matrix type liquid crystal display panel is used with a central processor unit for displaying a message longer than the capacity of the display panel. The beginning portion of the message of a length equal to the capacity of the display panel is first displayed at one time and held on the display panel for a limited length of time facilitating the viewers' recognition of the meaning of the message. When the repeated display of the message is desired, the display state where the end of the message is in alignment with the last digit position of the display panel is held for a given length of time. The first and final holdings of the message results in enhancing legibility of the display contents on the panel.

Abstract: Speech synthesis is improved by using normalized values of pitch and amplitude data to modify phoneme signals which are further processed by a quantizing noise filter which computes and interleaves the average value between adjacent samples.

Abstract: An electronic calculator with a dot matrix display panel capable of displaying characters, symbols or other patterns is implemented with a central processor unit (CPU). More particularly, when the length of characters is in excess of the capacity of the display panel, those characters are shifted dot by dot on the display panel in the running fashion. Numbers are displayed digit by digit, preferably.

Abstract: There is disclosed an information display system for displaying information. Information such as an English sentence "May I ask you to post this letter?" is first stored word by word in a first memory means. "May I ask you to post" is fetched from the first memory means and loaded into a second memory means for displaying the same on a display panel. After a predetermined period of time has gone on, the display is shifted by the number of characters in the next succeeding word to be displayed, i.e., four characters in "this" to establish a length of blank digits necessary for displaying "this". Subsequent to the shift operation the blank digits of a display panel is filled with "this". The process continues on a word for word basis until the complete sentence has been displayed.

Abstract: A waveform synthesizer arrangement for use in an audible output device is adapted to synthesize desired waveforms and includes a digital filter to reduce the generation of output noise. A time sequential process is effected on data to be reproduced which considers the total nature of waveforms of interest thus performing proper waveform adjustment to avoid acute changes in the waveforms. The time sequential process is affected by previous data and has the effect on the frequency construction of the resulting waveform.

Abstract: An electronic digital read-out scale having an extensible tape member is disclosed having a memory designed to store first measurement information for calculation with the subsequent measurement information. A memory key is included within the scale functions to transfer information to the memory. A plus key and a minus key are further provided within the electronic digital scale for addition or subtraction purposes, respectively. Final measurement results are derived through calculations of the measurement information stored in the memory with the subsequent measurement information.

Abstract: An extensible tape member is provided to extend along an object to be measured, and to permit a detection plate to rotate in unison with the pulling in and out movement of the extensible member. A pair of photo-electric elements is positioned with respect to the detection plate for developing detection signals in accordance with rotation of the detection plate. The detection signals are developed as a function of an amount of the extension of the tape member and the direction of the tape extension. The detection signals derived from the pair of the elements have a phase difference with respect to each other so as to determine whether the extensible tape member is being pulled out or in the housing of the digital scale, that is, the direction of the extension of the tape member. The detection signals are introduced into a logic circuit for developing control signals which are supplied to a display driver.