Samsung Electronics Co., Ltd.

Sung Geun Park

Chul Joon Choi

Chul Jun Choi

Hyuk Jun Sung

Tae-Geuk Kim

Keon Han Sohn

Byung Yoon Kang

A method of operating a multi-interface memory card including a first interface supporting a universal serial bus (USB) data transfer protocol and the second interface supporting an inter-chip USB (IC-USB) data transfer protocol includes; selecting either the first interface or the second interface to facilitate data communication between the multi-interface memory card and a host connected to the multi-interface memory card via a USB connection by comparing a level of a power-on voltage received from the host with a reference voltage level, and thereafter determining whether a reset signal has been received from the host.

Multi-interface memory card and method of operation

A semiconductor device includes at least one endpoint communicating with a host, and an endpoint controller dividing each of the at least one endpoint into a majority of sub-endpoints and performing numbering to each of the divided sub-endpoints. The endpoint controller transmits a packet generated by the host to any one of the sub-endpoints.

Semiconductor devices capable of dividing endpoint into majority of sub-endpoints

A clock signal generator can include a clock signal generation unit that is configured to generate a clock signal. A clock signal control unit is configured to count a number of pulses of the clock signal during a reference time, and to compare the number of pulses with a reference value to provide a comparison result, and to generate a control signal based on the comparison result, where the clock signal generation unit increases or decreases the number of pulses of the clock signal based on the control signal.

Growing community of inventors

Gyeonggi-do, South Korea

Sung Geun Park