30results about How to "Low power mode" patented technology

The invention discloses a water conservancy remote measurement terminal and a working method thereof. The terminal comprises a microprocessor, and the microprocessor is connected with a clock circuit. The clock circuit is used for providing reference time for the microprocessor. The microprocessor is connected with a power module and a meter reading module. The meter reading module is provided with a power control circuit which is connected with a power port of the communication circuit. The microprocessor controls the on and off of the power of the communication circuit through the on and off of a field effect tube in a power control circuit, thereby achieving the purposes of meter reading and power consumption reduction, effectively reducing the power consumption of the terminal, and achieving the saving of energy for the terminal.

An Active Matrix Organic Light Emitting Diode (AMOLED) display and a method of controlling a display thereof are provided. The AMOLED display includes an input unit, a controller, a display unit for displaying a low power mode screen, by enabling the controller to turn off an AMOLED and to turn on a cholesteric Liquid Crystal Display (LCD) in a low power mode, and for displaying a high picture quality mode screen, by enabling the controller to turn on the AMOLED and to turn off the cholesteric LCD in a high picture quality mode. When used in an indoor environment, the AMOLED display can operate in the high picture quality mode, and when used in an outdoor environment or as an e-book reader, the AMOLED display can operate in the low power mode.

The invention provides a bidirectional bus communication circuit which comprises a host device, a plurality of slave devices and buses, wherein the host device is connected with the slave devices via the buses; the host device comprises a host data sending circuit, a host data receiving circuit and a host CPU; and each slave device comprises a slave data sending circuit, a slave data receiving circuit and a slave CPU. The invention further provides a bidirectional bus communication method which comprises the following steps: S1, the host device supplies power for or charges the slave devices; S2, data of the host device data is downlinked, while the slave devices receive the downlinked data; and S3, data of the slave devices is uplinked, while the host device receives the uplinked data. The bidirectional bus communication circuit provided by the invention can adopt various topology modes, and supports various modes such as an annular mode and a star-like mode, so that the engineering difficulty is greatly reduced in the aspects of topology modes, cable cost and wiring difficulty, the bidirectional bus communication circuit can support long-distance communication, up to 128 slave loads, and a low-power mode, and anti-jamming capability is enhanced.

An image sensor including a first pixel circuit, a second pixel circuit, a first readout line, a second readout line, a first readout circuit, a second readout circuit and an average switch is provided. The first and second pixel circuits are in two columns of a pixel array. The first readout line transmits pixel data of the first pixel circuit to the first readout circuit. The second readout line transmits pixel data of the second pixel circuit to the second readout circuit. The average switch is arranged between the first and second readout lines and used to electrically connect the first and second readout lines in an average mode to average the pixel data on the first and second readout lines.