Abstract: A transmitter for wireless communications includes an encoder, a normalizer, a binarizer, and a radio frequency (RF) circuit. The encoder is configured to encode a control message into a channel dimensional vector according to a channel dimension and the number of semantic fields by utilizing a training model. The control message includes at least one of control plane media access control layer information and control plane physical layer information. The normalizer is configured to normalize the channel dimensional vector to generate a normalized channel dimensional vector. The binarizer is configured to binarize the normalized channel dimensional vector to generate a fixed-point number. The RF circuit is configured to modulate the fixed-point number into an RF signal and transmit the RF signal.

Abstract: An electronic device includes a housing for safely breaking electronic communication with a smart card on removal from the electronic device. A safeguard structure rotates with respect to the housing to cover the smart card when inserted, and a switch breaks communication between the smart card and the electronic device when the safeguard structure is rotated away from the housing to enable removal of the smart card. The breaking of communication safely prevents damage to, or corruption of, data in the smart card upon removal from the electronic device.

Abstract: An electronic device includes a housing for safely breaking electronic communication with a smart card on removal from the electronic device. A safeguard structure rotates with respect to the housing to cover the smart card when inserted, and a switch breaks communication between the smart card and the electronic device when the safeguard structure is rotated away from the housing to enable removal of the smart card. The breaking of communication safely prevents damage to, or corruption of, data in the smart card upon removal from the electronic device.

Abstract: A hinge assembly includes a first body, and a second body capable of rotating relatively to the first body. The first body includes a first main part and a pair of stopper portions respectively extending from two sides of the first main part and coplanar with the first main part. Two ends of a shaft are fixed with the pair of stopper portions, respectively. The second body includes a second main part, a pair of blocking portions and a resilient arm located between the pair of the blocking portions. When the second body rotates to be perpendicular to the first body, the second body is positioned stably relative to the first body without an external force, due to an elasticity of the resilient arm of the second body.

Abstract: A hinge assembly includes a first body, and a second body capable of rotating relatively to the first body. The first body includes a first main part and a pair of stopper portions respectively extending from two sides of the first main part and coplanar with the first main part. Two ends of a shaft are fixed with the pair of stopper portions, respectively. The second body includes a second main part, a pair of blocking portions and a resilient arm located between the pair of the blocking portions. When the second body rotates to be perpendicular to the first body, the second body is positioned stably relative to the first body without an external force, due to an elasticity of the resilient arm of the second body.

Abstract: A light guide (30) for illuminating a keypad (20) including a plurality of keys (22) includes a plurality of apertures (300) corresponding to the keys, and an accommodating portion. The accommodating portion defines at least one receiving hole (320) for receiving at least one light source. A thickness of the light guide gradually reduces from the accommodating portion to surrounding portions of the light guide along at least one direction.