Abstract: A key-value store and a file system are integrated together to provide improved operations. The key-value store can include a log engine, a hash engine, a sorting engine, and a garbage collection manager. The features of the key-value store can be configured to reduce the number of I/O operations involving the file system, thereby improving read efficiency, reducing write latency, and reducing write amplification issues inherent in the combined key-value store and file system.

Abstract: An under-screen biometric identification apparatus and electronic device. The under-screen biometric identification apparatus includes an optical function layer, including a first linear polarizer and a first quarter-wave plate, wherein the first linear polarizer and the first quarter-wave plate are configured to be stacked; a biometric identification module, configured to perform biometric identification based on light transmitted to the biometric identification module via the optical function layer. The under-screen biometric identification apparatus could improve the performance of the under-screen biometric identification.

Abstract: Provided is an apparatus for fingerprint detection, where the apparatus includes a sensor chip array and an MCU, the sensor chip array includes a first chip set in which chips multiplex a first signal line and a second chip set in which chips multiplex a second signal line, where the chips in the first chip set and the chips in the second chip set are alternately arranged in each row and each column, and the MCU is configured to: control one first chip in the first chip set to perform fingerprint detection on a finger on the display screen at a time; and/or, control one second chip in the second chip set to perform fingerprint detection on the finger at the time.

Abstract: Provided is an apparatus for fingerprint detection, where the apparatus includes a sensor chip array and an MCU, the sensor chip array includes a first chip set in which chips multiplex a first signal line and a second chip set in which chips multiplex a second signal line, where the chips in the first chip set and the chips in the second chip set are alternately arranged in each row and each column, and the MCU is configured to: control one first chip in the first chip set to perform fingerprint detection on a finger on the display screen at a time; and/or, control one second chip in the second chip set to perform fingerprint detection on the finger at the time.

Abstract: An under-screen biometric identification apparatus and electronic device. The under-screen biometric identification apparatus includes an optical function layer, including a first linear polarizer and a first quarter-wave plate, wherein the first linear polarizer and the first quarter-wave plate are configured to be stacked; a biometric identification module, configured to perform biometric identification based on light transmitted to the biometric identification module via the optical function layer. The under-screen biometric identification apparatus could improve the performance of the under-screen biometric identification.

Abstract: This invention relates to the field of highway vehicle toll collection system and vehicle license plate recognition technology, in particular involving two cameras vehicle recognition system and collection method. It is composed of the door entry system and the photographing recognition system based on an ETC system, wherein the photographing recognition system comprises a main camera and an auxiliary camera, and the main camera and the auxiliary camera are installed from front to back respectively on two upright posts, and the data is transmitted to the computer of the toll booth through the two complementary cameras. This invention can accurately replace the existing high-speed ETC RFID (radio frequency identification) device and realize the zero-cost during the journey through the accurate recognition of the license plate and the automatic recognition and conversion of the vehicle license plate number image into the digital signal.

Abstract: Disclosed are a fingerprint detection device and a mobile terminal. The fingerprint detection apparatus comprises a capacitive fingerprint sensor and a capacitive touch control chip which is electrically connected to the capacitive fingerprint sensor; wherein the capacitive fingerprint sensor is configured to collect fingerprint information and convert the fingerprint information to an analog signal; and the capacitive touch control chip is configured to convert the analog signal to a digital signal, and generate fingerprint image information according to the digital signal. As compared with the dedicated control chip in the related art, the capacitive touch control chip has mature design and manufacture technique, and thus the manufacture and application costs are lower.

Abstract: Disclosed are a fingerprint detection device and a mobile terminal. The fingerprint detection apparatus comprises a capacitive fingerprint sensor and a capacitive touch control chip which is electrically connected to the capacitive fingerprint sensor; wherein the capacitive fingerprint sensor is configured to collect fingerprint information and convert the fingerprint information to an analog signal; and the capacitive touch control chip is configured to convert the analog signal to a digital signal, and generate fingerprint image information according to the digital signal. As compared with the dedicated control chip in the related art, the capacitive touch control chip has mature design and manufacture technique, and thus the manufacture and application costs are lower.