Abstract: A face recognition system and a face recognition method are provided. The face recognition system includes an image capturing device and a processing device. The image capturing device is configured to capture a face image of a user to be recognized, de-identify the face image to obtain de-identified image data, and transform the de-identified image data into multiple de-identified features and output. The processing device is configured to verify an identity of the user to which the de-identified features belong by using a trained machine learning model. The machine learning model is trained by using de-identified features and identities of multiple users registered in advance.

Abstract: An access control management system, access control management method and an image capture device are provided. The access control management system includes an image capture device and a processing device. The image capture device includes: a lens; an image sensor configured to sense a light intensity passing through the lens to generate an image of a subject being captured; an image signal processor (ISP) configured to capture a face image in the generated image, perform a de-identification processing on the face image to obtain de-identified image data, and transform the de-identified image data into multiple de-identified features; and an I/O interface configured to output the de-identified features. The processing device is configured to verify an identity of a user to which the de-identified features belong by a trained deep learning model. The deep learning model is trained by using de-identified features and identities of multiple users registered in advance.

Abstract: A certificate requesting method, a certificate issuing method, a certificate system and a computer-readable medium thereof are provided, in which subscriber identity identification information, a private key and a public key certificate bound to a first security chip are converted into a private key bound to a second security chip via an online identity authentication procedure, and the corresponding public key certificate is issued by a certificate authority server, so as to improve the usability, the convenience and the security thereof.

Abstract: A rotor set comprises a pair of engaging rotors disposed in a pump room of a housing rotating oppositely with identical speeds. Each rotor comprises a plurality of lobes, and each lobe has a fan-shaped end with a curved edge. The lobe generates an eccentric force to the rotor during the rotation to reduce mechanical consuming energy and save dynamic energy. Therefore, the rotors can achieve strong eccentric torque and self-vacuum effect with low dynamic energy.

Abstract: A rotor set comprises a pair of engaging rotors disposed in a pump room of a housing rotating oppositely with identical speeds. Each rotor comprises a plurality of lobes, and each lobe has a fan-shaped end with a curved edge. The lobe generates an eccentric force to the rotor during the rotation to reduce mechanical consuming energy and save dynamic energy. Therefore, the rotors can achieve strong eccentric torque and self-vacuum effect with low dynamic energy.