Kabushiki Kaisha Toshiba

Toshiba Electronic Devices & Storage Corporation

Kai Sasadate

Hiroaki Sugita

Minoru Yagi

Tetsuro Oishi

Masaki Jono

Ken Kawakami

A door lock control system includes a first device including a first transmitter, a first receiver, and a first controller configured to measure first signal strengths of radio signals received from a plurality of surrounding devices by the first receiver, and control the first transmitter to transmit the measured first signal strengths to a second device. The system further includes the second device including a second receiver and a second controller configured to measure second signal strengths of radio signals received from a plurality of surrounding devices by the second receiver, control the second receiver to receive the first signal strengths from the first device, compare the first signal strengths with the second signal strengths, and control a door lock based on the comparison of the first and the second signal strengths.

Door lock control system and door lock apparatus

According to an embodiment, a semiconductor device can be in an operating state and a standby state with a choice of a plurality of standby state levels and has a CPU, an interrupt control circuit, and a hardware control circuit. The CPU makes a comparison of a first return time period corresponding to a first standby state level that is a shallowest one selected from among allowable standby state levels set for one or more tasks executed immediately before transition to the standby state with a second return time period selected from among allowable return time periods set for the one or more tasks executed, changes a standby state level of the standby state if the first return time period is judged to be longer than the second return time period as a result of the comparison, and controls the hardware control circuit.

Semiconductor device, power control method, and storage medium

Growing community of inventors

Kanagawa, Japan

Kai Sasadate