Abstract: Techniques pertaining to battery protection circuits are disclosed. According to one embodiment of the present invention, the battery protection circuit includes a power button, a power detection circuit, a first switch coupled between the power button and the power detection circuit, the power detection circuit configured to output a power-off signal when either the first switch or the power button is in a switch-off state, a low-voltage detection circuit coupled with a battery and configured to detect whether a voltage of the battery is lower than a low-voltage detection threshold or not, and switch off the first switch to cut off an electric leakage path of the battery when the voltage of the battery is determined to be lower than the low-voltage detection threshold, and a power management circuit coupled with the power detection circuit and configured to cut off an electric discharge path of the battery to prohibit the battery from discharging when receiving the power-off signal.

Abstract: Techniques pertaining to designs of integrated circuits having on-chip inductors with low common mode coupling effect are described. According to one aspect of the present invention, an integrated circuit is designed to have a first circuit operating at a first frequency and including a first inductor, and a second circuit including a second inductor and provided to process an input signal. The second circuit includes a second inductor and is provided to process an input signal.

Abstract: Techniques for controlling a personalized Bluetooth device (e.g., headset) and a voice interaction control method thereof are described. According to one aspect of the present invention, the Bluetooth device is caused to maintain a voice contact list. Each item in the voice contact list corresponds to a phone number associated with a set of audio data (e.g., a voice or a predefined audio). Instead of dialing a phone number on a calling device (e.g., a cellular phone) being paired with the Bluetooth device, a user can speak to the Bluetooth device that is caused to search a corresponding phone number in the voice contact list. The number is then sent to the calling device to make a call.