Abstract:
A polishing head may include a substrate carrier detachably secured to a driving shaft and to pressurize and rotate a substrate, the substrate carrier includes a flexible membrane, wherein the flexible membrane includes a main thin film having a first surface to be in contact with the substrate and a second surface opposite to the first surface and a plurality of vertical thin films extending from the main thin film in a vertical direction to define a plurality of pressurizing chambers that are divided along a radial direction about a central axis; a plurality of temperature elements disposed under the plurality of pressurizing chambers in the main thin film and configured to apply local heat to the substrate; and a plurality of pressure elements respectively disposed on the plurality of temperature elements in the main thin film and configured to apply local pressure to the main thin film.
Abstract:
A method of controlling on/off of a core based on a used amount of an operating core and the number of tasks in an electronic device having a multi-core, and an apparatus thereof, includes confirming a load of an operating core and the number of executable tasks at a predetermined period, determining whether the load of the operating core and the number of executable tasks meet a defined on/off condition of the multi-core, and controlling on/off of the multi-core when the load of the operating core and the number of executable tasks meet the defined on/off condition of the multi-core.
Abstract:
A multi-subscriber identity module (SIM) device including a first SIM for first wireless communication, a second SIM for second wireless communication, and a processor configured to allocate a radio frequency (RF) resource to any one of the first and second SIMs, control first uplink time alignment of the first wireless communication by allocating the RF resource to the first SIM, and adjust a first time alignment timer for the first uplink time alignment based on an RF resource allocation gap of the first SIM when the RF resource is allocated from the first SIM to the second SIM and the RF resource is reallocated from the second SIM to the first SIM may be provided.
Abstract:
A method of operating a wireless communication terminal, which performs a hybrid automatic repeat request process for a plurality of subscriber identity modules (SIMs), includes: setting up communication with a plurality of base stations that respectively correspond to the plurality of SIMS; allocating a radio frequency resource to receive data from each base station corresponding to each SIM in an SIM allocation duration, wherein the SIM allocation duration is set corresponding to each of the plurality of SIMS in a multi-SIM allocation period, and wherein the multi-SIM allocation period corresponds to a data round trip time (RTT) of a base station of the plurality of base stations; and transmitting, with respect to the received data, one of an acknowledged (ACK) signal and a negative-ACK (NACK) signal to each base station corresponding to each SIM.
Abstract:
A device for wireless communication of user equipment (UE) in a dual connection system includes a memory providing a buffer storing first data received from a first base station (BS) and second data received from a second BS and a first processor generating a radio bearer (RB) by reordering the first data and the second data and adjusting a size of the buffer based on a delay between the first BS and the second BS.