Samsung Electronics Co., Ltd.

Sang-Jun Mun

Choong-Bin Lim

Sung-Won Lee

Jin-Ghoo Choi

Sae-Woong Bahk

Yoon-Beom Song

A universal serial bus (USB) device is comprised of a receiver for receiving signals from a USB host through data lines, and a pull-up resistor circuit connecting pull-up resistors to data lines in response to control signals. The pull-up resistor circuit selectively connects a plurality of pull-up resistors with a data line in response to control signals. The pull-up resistor circuit controls a number of the plurality of pull-up resistors connected with the data line to cause a voltage level of the signal to be lower than a threshold voltage when the USB host resets the USB device.

USB device and data processing system having the same

A USB control system includes a first voltage controller, a control switch, a second voltage controller, and a PHY unit. The first voltage controller outputs a first internal voltage from an external voltage and a reference voltage, and the control switch regulates supplying and suspending the external voltage. The second voltage controller outputs a second internal voltage from the reference voltage and the external voltage applied through the control switch, and the PHY unit receives a request from a host using the first or second internal voltage as a voltage source. The power for certain internal blocks is suspended to reduce power consumption in the USB control system during a power-saving mode.

Apparatus and method for controlling a suspending mode in a USB control system

A call admission control method and apparatus in a mobile communication network including a plurality of cells. In the call admission control apparatus, a receiver receives a call setup request for a call, a first decider decides the type of the call, and a second decider decides whether the call satisfies a predetermined condition corresponding to the call type and admitting the call if the call satisfies the condition. The condition is that an FER, which is predicted for the call admission using a second average and a second standard deviation of received power, is less than or equal to a predetermined target FER, the second average and second standard deviation being estimated using a first average and a first standard deviation of received power for a predetermined time period and an average received power increment and a standard deviation increment that are produced by the call admission.

Growing community of inventors

Incheon-si, South Korea

Sang-Jun Mun