Pioneer Electronic Corporation

Pioneer Corporation

Satoshi Saitoh

Mitsuo Yasushi

Kazuhiro Akiyama

Masatoshi Yanagidaira

Kenichiro Yano

Yoshihide Hamaguchi

Shuuji Watanabe

An upgrade method for navigation data is provided with: a memory status of a memory device that is removed from a navigation apparatus is checked and it is determined whether there are the navigation data to be upgraded and the user data to be saved. The user data is saved in a backup memory device. The navigation data is written over with upgraded navigation data. Then, the saved data is read from the backup memory device and rewritten in the memory device as the user data.

Upgrade for navigation data based on usage data or initialization of navigation data

An information reproducing apparatus applied to a psychological game machine which can evaluate the deep mental state of human, avoiding monotonous progress of a game. A plurality of image and audio information have previously been stored on a recording medium such that at least one of the plurality of image and audio information stored on the recording medium is selected for reproduction based on external operations and physiological changes in the body.

Information reproducing apparatus for use with a psychological game

A driving mental condition detecting apparatus for detecting a deterioration state of driving mental conditions such as sleepiness, fatigue, and impatience occurring in a driver on the basis of physiological data detected from the driver and road travel data of a vehicle derived from a navigation system, thereby generating an alarm.

Driving mental condition detecting apparatus

A cardiac rate measuring apparatus which is intended to measure the cardiac rate of a driver without restraining motions of the driver. Skin tremors occurring on the surface of skin of the body are detected, and level peak values of the skin tremors are held to generate an envelope waveform signal as a cardiac rate signal corresponding to the cardiac rate of the driver.

Cardiac rate measuring apparatus

Disclosed is a brain wave leading apparatus which can achieve a high brain wave leading efficiency when a human brain wave frequency is led to a desired frequency band. This brain wave leading apparatus comprises a brain wave sensor for detecting the brain wave of a person to be tested (subject) during brain wave leading, and a control unit for renewing a leading center frequency for leading the brain wave frequency therewith. The brain wave frequency of the subject is measured even during brain wave leading, and based on a weighted mean frequency f' detected in a predetermined interval, a leading center frequency F in a subsequent interval is determined. The leading of the brain wave frequency is continued with the leading center frequency F supplied from the control unit. Even if the weighted mean frequency of the subject during leading varies, therefore, the leading center frequency follows up that change, so that brain wave leading will be executed in a short period of time.

Growing community of inventors

Kawagoe, Japan

Satoshi Saitoh