Abstract: A controller for controlling an electric motor module equipped with incremental encoder and operation method thereof are provided. The controller includes a quadruple frequency circuit, a driver circuit, a non-volatile memory (NVM) and a multi-phase control circuit. The multi-phase control circuit can perform multi-phase control with aid of the NVM, for example: reading an offset counter value from the NVM; executing an initial angle estimation procedure, generating an initial counter value according to an estimated initial angle and the offset counter value, and starting utilizing the driver circuit to directly control the electric motor to start with the estimated initial angle and utilizing a counter to perform counting operations; calculating a counter value error and clear the current counter value to be zero; and performing compensation corresponding to a predetermined compensation times count according to the counter value error, respectively, to control the rotor to reach a target angle.

Abstract: A method for measuring temperature is used to obtain a room temperature of a room. The method for measuring temperature includes: obtaining a first temperature inside an operating area in a portable electronic device in the room; obtaining a second temperature outside the operating area in the portable electronic device by a first temperature sensor; calculating a temperature difference between the first temperature and the second temperature; obtaining a compensation temperature according to the temperature difference and a compensation temperature table; and calculating the room temperature according to the second temperature and the compensation temperature.

Abstract: A method for measuring temperature is used to obtain a room temperature of a room. The method for measuring temperature includes: obtaining a first temperature inside an operating area in a portable electronic device in the room; obtaining a second temperature outside the operating area in the portable electronic device by a first temperature sensor; calculating a temperature difference between the first temperature and the second temperature; obtaining a compensation temperature according to the temperature difference and a compensation temperature table; and calculating the room temperature according to the second temperature and the compensation temperature.

Abstract: A display device includes at least one speaker, a signal transceiver and a processor. The at least one speaker outputs a sound according to a volume parameter. The signal transceiver receives incoming call information from a communication device. The processor is electrically coupled to the at least one speaker and the signal transceiver. The processor detects signal strength of the communication device and adjusts the volume parameter according to the incoming call information and the signal strength, in order to increase or decrease a volume of the sound.

Abstract: A display device includes at least one speaker, a signal transceiver and a processor. The at least one speaker outputs a sound according to a volume parameter. The signal transceiver receives incoming call information from a communication device. The processor is electrically coupled to the at least one speaker and the signal transceiver. The processor detects signal strength of the communication device and adjusts the volume parameter according to the incoming call information and the signal strength, in order to increase or decrease a volume of the sound.