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Chia-Pao
Chia-Pao Chang, Hsinchu TW
| Patent application number | Description | Published |
|---|---|---|
| 20090010087 | DATA WRITE IN CONTROL CIRCUIT FOR TOGGLE MAGNETIC RANDOM ACCESS MEMORY - A data write in control circuit for magnetic random access memory is configured with a first transistor, a second transistor connected to the first transistor, a transmission gate connected to the first transistor, a comparator having two input terminal connected to the first transistor, a storage capacitor having one end connected to the first transistor and the other end connected to a power source or a ground, and a logic circuit having one end connected to the output terminal of the comparator and the other end receiving data to be written in. | 01-08-2009 |
Chia-Pao Cheng, Shu Lin City TW
| Patent application number | Description | Published |
|---|---|---|
| 20090143869 | ANTI-SHOCK ARTIFICIAL KNEE JOINT STRUCTURE - An anti-shock artificial knee joint includes a pivot stop block forming a first pivot hole rotatably receiving therein a first pivot for bending the knee joint and a second pivot hole rotatably receiving a second pivot. A gap extending from the first pivot hole so that when the pivot stop block is subjected to an external force induced in the process of walking, the gap is reduced to secure the first pivot from rotation whereby the pivot stop block rotates about the second pivot to cause the pivot stop block to engage spring-biased pistons to thereby absorb the external force or the impact caused by the external force. The spring-biased pistons are provided with set screws to adjust the cushioning effect provided by the spring-biased pistons. | 06-04-2009 |
| 20110022185 | CUSHION STRUCTURE OF ARTIFICIAL KNEE JOINT - An artificial knee joint includes a joint support having upper and lower ends jointed to outside links and an upper link respectively; a brake block having upper and lower jointing holes respectively jointing a lower end of the upper link and a connector, and having an upper portion forming a positioning slot; a hydraulic cylinder arranged inside the brake block and having an upper end coupled to the joint support; a connector having a lower portion connected to a shank and an upper end portion through which a positioning axle extends; and outside links having an upper end jointed to an upper jointing hole of the joint support and a lower end jointed to a jointing hole of the connector. A cylinder barrel, a piston, a resilient element, and an adjusting bolt are arranged inside the connector and the piston is et against a lower end of the brake block. | 01-27-2011 |
Chia-Pao Hsu, Hsinchu TW
| Patent application number | Description | Published |
|---|---|---|
| 20100212425 | 3-Axis Accelerometer With Gap-Closing Capacitive Electrodes - Disclosed is a novel three-axis capacitive-type accelerometer implemented on SOI wafer. The accelerometer consists of four springs, one proof mass, four pairs of gap-closing sensing electrodes (each pair of gap-closing sensing electrode containing one movable electrode and one stationary electrode), and several metal-vias as the electrical interconnections. The movable electrodes are on the proof mass, whereas the stationary electrodes are fixed to the substrate. The three-axis accelerometer has five merits. (1) The sensitivity of the accelerometer is improved since the proof-mass is increased by containing both device and handling silicon layers; (2) The sensitivity is also improved by the gap-closing differential capacitive sensing electrodes design; (3) The parasitic capacitance at bond pad is reduced by the existing of metal-vias between the device Si layer and handling Si layer; (4) The sensing gap thickness is precisely defined by the buried oxide of SOI wafer; (5) The stationary sensing electrodes anchored to the substrate also act as the limit stops to protect the accelerometer. | 08-26-2010 |