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Chien-Hsien
Chien-Hsien Chen, Taipei City TW
| Patent application number | Description | Published |
|---|---|---|
| 20100133503 | PHASE CHANGE MEMORY - A phase change memory is provided, which includes a semiconductor substrate having a first conductive type, buried word lines having a second conductive type, doped semiconductor layers having the first conductive type, memory cells, metal silicide layers, and bit lines. The buried word lines are disposed in the semiconductor substrate. Each buried word line includes a line-shaped main portion extended along a first direction and protrusion portions. Each protrusion portion is connected to one long side of the line-shaped main portion. Each doped semiconductor layer is disposed on one protrusion portion. Each memory cell includes a phase change material layer and is disposed on and electrically connected to one of the doped semiconductor layers. Each metal silicide layer is disposed on one of the line-shaped main portions. Each bit line is connected to memory cells disposed on the word lines in a second direction substantially perpendicular to the first direction. | 06-03-2010 |
Chien-Hsien Ho, Luzhu Shiang TW
| Patent application number | Description | Published |
|---|---|---|
| 20090040110 | MULTI-BAND PLANAR INVERTED-F ANTENNA - A multi-band planar inverted-F antenna includes a radiating unit, a ground unit and a feeding unit. The radiating unit includes a common radiating element, a high-frequency (HF) radiating element and a low-frequency (LF) radiating element. A quasi U-shaped slot is defined between the HF radiating element and the LF radiating element. The ground unit is electrically connected to one side of the common radiating element. The feeding unit includes a strip electrically connected to one side of the HF radiating element. The ground unit includes a ground point and an inverted-L short-line connected to the ground point at one end thereof. The inverted-L short-line is also electrically connected to the common radiating element at another end thereof. A loop surface current induced by the inverted-L short-line can advantageously enhance bandwidth of the multi-band planar inverted-F antenna at frequencies of interest. | 02-12-2009 |
Chien-Hsien Lee, Taipei TW
| Patent application number | Description | Published |
|---|---|---|
| 20090189716 | FILTER DEVICE WITH FINITE TRANSMISSION ZEROS - A filter device with transmission zeros is provided according to the present invention, which has an odd mode resonant frequency and an even mode resonant frequency. The filter device includes: a substrate, a metallic rectangular ring, a signal couple-in/couple-out module, and a metallic ground plane, wherein the surface of said metallic ground plane is parallel to the plane enclosed by said metallic rectangular ring, and said metallic rectangular ring applied to the filter device of the present invention has a perimeter shorter than or equal to the wavelength corresponding to the mean of said odd mode resonant frequency and said even mode resonant frequency, thereby allowing said filter device of the present invention, in a situation of specific bandpass frequency, to reduce its perimeter to about half of the perimeter of conventional annular rectangular dual mode filters. In addition, the locations of the transmission zeros can be changed by adjusting the length/width ratio of said metallic rectangular ring, and the frequency response of the filter signal can also be reduced by disposing a ground capacitor module. Accordingly, the area of the dual mode filter can be greatly reduced. Furthermore, the frequency response of the filter signal can be increased by disposing a ground inductor module, accordingly, decreasing the size of dual mode filter and providing a means of easy fabrication thereof. | 07-30-2009 |
Chien-Hsien Tsai, Hsinchu TW
| Patent application number | Description | Published |
|---|---|---|
| 20090018789 | IMAGE AUTO-CALIBRATION METHOD AND SYSTEM - An image auto-calibration method for an image capture device having an image sensor is provided. The method includes the steps of receiving an image matrix; transforming the image matrix into an image signal via the image sensor; generating n first sampling pulses and n second sampling pulses in response to the image signal, wherein one of the first sampling pulses and one of the second sampling pulses constitute a sampling pulse set; calculating an eigenvalue of the image signal according to each of the sampling pulse sets; and outputting an image according to the sampling pulse set with the largest eigenvalue. | 01-15-2009 |