Nippondenso Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Muneo Saito

Shoichi Hayakawa

Naoki Tokitsu

A car-locating system comprises a portable transmitter-receiver unit and a car-mounted transmitter-receiver unit. The portable unit includes a switch, a first directional antenna, a first transmission section, a receiving section and a receipt level display. When it is closed, the switch generates a car-locating instruction. In response to this instruction, the first transmission section transmits a transmitting code through the directional antenna. Any signal received by the directional antenna is demodulated by the receiving section into a response code. The response code is compared with a first prescribed response code. When it is identical with the first prescribed response code, the receiving signal level is displayed by the receipt level display. The car-mounted unit includes a non-directional antenna, a second transmission section and a timer. The non-directional antenna receives the code transmitted from the portable unit. The code contained in the transmitted signal is compared with a transmitting code set in the car mounted unit. When it is identical with the transmitting code, the second transmission section is operated for the period of time set in the timer, thus transmitting a response signal containing a response code through the non-directional antenna.

Apparatus for finding the location of a car within a vast area

A starter control apparatus for automotive vehicles comprises a key-board arranged to be operated by an operator prior to operation of a key switch for producing an electric code signal indicative of identification of the operator, a collator arranged to memorize a specific code for the vehicle's proprietor and responsive to the electric code signal to produce a concord signal therefrom when the contents of the electric code signal accords with the memorized specific code and to produce a discord signal therefrom when the contents of the electric code signal discords with the memorized specific code, and a power supply control circuit arranged to permit the electric power supply to a starter circuit for a prime mover of the vehicle in response to operation of the key switch when received the concord signal from the collator and to prohibit the electric power supply to the starter circuit when received the discord signal from the collator.

Starter control apparatus for automotive vehicles

In a method for magnetically recording a vehicle condition, a voltage proportional to a vehicle speed is sampled at a predetermined interval and converted into a code signal which is temporarily memorized by a memory. When the memorized data reach a predetermined amount, the data are transferred to be recorded by a magnetic tape for a period which is short enough not to prevent the memory from memorizing. When all the data have been recorded, a completion signal is generated to stop the tape, whereby the inter record gap is limited to minimum length.

Growing community of inventors

Yokkaichi, Japan

Muneo Saito