Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Sony Corporation

Nec Corporation

Mitsubishi Jidosha Kogyo K.k.

Masato Nishida

Takanori Sugimoto

Hiroaki Miyamoto

Yasuyuki Hatsuda

Toshiyuki Matsumi

Toshifumi Mizui

Akira Hashizaka

Hideaki Taniguchi

Sosuke Nanbu

Toshiyuki Kashiwagi

Tetsuhiro Sakamoto

Motohiro Furuki

Hitoshi Tamada

Ayumu Taguchi

Takahiko Uesugi

Yasuyuki Ito

Tetsuya Furuichi

Ryosuke Koga

A control device of an electric vehicle comprises: an operating state detector that detects the operating state of an accelerator pedal; a motor controller that executes deceleration control over a travel motor, including coasting control which reduces the driving force of the travel motor to zero, when the returning operation of the accelerator pedal is detected by the operating state detector; and a region setter that sets the range of the depression amount of the accelerator pedal for executing the coasting control, based on the depression amount of the accelerator pedal at the start of the returning operation of the accelerator pedal. The control device can switch among the types of control over the travel motor during the returning operation of the accelerator pedal, while suppressing a driver's sense of incongruity.

Control device of electric vehicle

A driving-force controller for an electric vehicle including at least two motors that independently drive left and right wheels, includes a detector that detects driving operation by a driver, and a controller that calculates a demand torque Tr of the driver, the torque difference &#x394;T applied to the left and right wheels during cornering, left and right torque-difference maintaining torques TLand TRof the motors when generating the demand torque Tr while maintaining the torque difference &#x394;T, and controls the motors based on the torque-difference maintaining torques TLand TR. The controller determines the priorities of a demand torque mode that generates the demand torque Tr and a torque difference mode that generates the torque difference &#x394;T depending on the driving operation detected by the detector.

Driving-force controller for electric vehicle

A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system, includes, a first calculation unit that converts a first deceleration threshold value to a first regenerative torque threshold value with a curb weight, a second calculation unit that converting a second deceleration threshold value to a second regenerative torque threshold value with a gross vehicle weight, a third calculation unit that calculates a third regenerative torque threshold value, and a determination unit that controls the stop lamp to be turned on when a regenerative torque value exceeds the first regenerative torque threshold value, the stop lamp to be turned off when the regenerative torque value is equal to or smaller than the second regenerative torque threshold value, and the stop lamp to be turned off when a given state continues.

Stop lamp lighting control device for electric vehicle

A stop lamp lighting control device for an electric vehicle having an electric regenerative braking system includes a calculation unit that converts a first deceleration threshold value for turning on a stop lamp or a second deceleration threshold value for turning off the stop lamp to a first regenerative torque threshold value for turning-on the stop lamp or a second regenerative torque threshold value for turning-off the stop lamp by calculation assumed that a weight of the vehicle is a curb weight or a gross vehicle weight, and a determination unit that performs a comparison between a regenerative torque value generated by the electric regenerative braking system and the first regenerative torque threshold value or the second regenerative torque threshold value and controls the stop lamp to be turned on or turned off based on the comparison result.

A diffraction grating light modulator composed of a plurality of diffraction grating light modulating elements formed on a substrate, each consisting of a lower electrode, belt-like fixed electrodes and movable electrodes supported above the lower electrode, and exposed connecting terminals (for electrical connection to external circuits) electrically connected to the movable electrodes, the fixed electrodes and the movable electrodes constituting a diffraction grating upon application of a voltage to the lower electrode, the diffraction grating light modulator having a protective electrode surrounding the connecting terminals, so that the diffraction grating light modulating element is certainly protected from damage by static electricity.

Aggregate of electronic device chips, electronic device chip, aggregate of diffraction grating light modulators, and diffraction grating light modulator

An optical disc and its manufacturing method in which humps may be prohibited from being formed on an outer rim area of the disc to assure optimum surface properties of a light transmitting layer of the disc to contribute to further increase in recording capacity. On a substrate of an optical disc are sequentially formed a recording portion and a light transmitting layer . The light falls on the light transmitting layer to record and/or reproduce information signals for a signal recording area of the substrate . The radial distance D from the outermost rim of the substrate to the signal recording area is selected to be larger than the radial width L of a hump formed on the outer rim of the light transmitting layer . The hump has a height h from the surface of the light transmitting layer not larger than 70 &mgr;m.

Optical disc and method for manufacturing same

An optical disc and its manufacturing method in which humps may be prohibited from being formed on an outer rim area of the disc to assure optimum surface properties of a light transmitting layer of the disc to contribute to further increase in recording capacity. On a substrate of an optical disc are sequentially formed a recording portion and a light transmitting layer The light falls on the light transmitting layer to record and/or reproduce information signals for a signal recording area of the substrate The radial distance D from the outermost rim of the substrate to the signal recording area is selected to be larger than the radial width L of a hump formed on the outer rim of the light transmitting layer The hump has a height h from the surface of the light transmitting layer not larger than 70 &mgr;m.

In an information processing device for use in indicating an operation number of floating point operation elements, such as either vector elements of each vector instruction or scalar instructions, the floating point operation elements are successively counted by an adder and a register to produce operation number signals representative of the results of counting. The operation number signals are periodically read out of the register as preceding and following operation number signals at preceding and following ones of periodical signals sent as a time signal from a digital timer, respectively, and are held in registers. A subtracter subtracts the preceding operation number from the following operation number to calculate a difference signal between the preceding and the following operation numbers and to provide the operation number per unit time. The difference signal is visually displayed on a display unit in real time. Alternatively, each of the preceding and the following operation number signals may be stored in a scalar register together with the time signal.

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Tokyo, Japan

Masato Nishida