Hynix Semiconductor Inc.

Haechitech Corporation

Joon Yul Yun

Seong Min Choe

Dong Yoon Kim

Eun Joong Kim

A rotation angle detecting method includes detecting a first rotation angle based on a first measured magnetic value received from a first hall element, detecting a first magnetic value received from a second hall element corresponding to the first detected rotation angle, adjusting a gain based on a first difference value between a second measured magnetic value received from the second hall element, in response to one of the magnetic pieces being rotated at the first rotation angle, and the first magnetic value, redetecting a second rotation angle by applying the gain to the first magnetic value and redetecting a second magnetic value received from the second hall element, corresponding to the second rotation angle, and outputting the second rotation angle as a confirmed rotation angle in response to a second difference value between the second magnetic value and the second measured magnetic value becoming less than a delta value.

Method for detecting angle of rotation using automatic gain adjustment algorithm and apparatus thereof

An I/O compression circuit for a semiconductor memory device operates in a same data compress mode to transmit identical data to all compressed data buses and a different data compress mode to transmit different data to adjacent compressed data buses.

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Seoul, South Korea

Joon Yul Yun