Changsong
Changsong Liu, Beijing CN
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20090135188 | METHOD AND SYSTEM OF LIVE DETECTION BASED ON PHYSIOLOGICAL MOTION ON HUMAN FACE - A method and a system of live detection based on a physiological motion on a human face are provided. The method has the following steps: in step a, a motion area and at least one motion direction in visual angle of a system camera are detected and a detected facial region is found. In step b, whether a valid facial motion exists in the detected facial region is determined. If a valid facial motion is inexistent, the object is considered as a photo of human face, otherwise, the method proceeds to step c to determine whether the facial motion is a physiological motion. If not, the object is considered as the photo of human face, yet considered as a real human face. The real human face and the photo of human face can be distinguished by the present invention so as to increase the reliability of the face recognition system. | 05-28-2009 |
20120299701 | METHOD AND APPARATUS FOR PASSCODE ENTRY - An apparatus and method for receiving a first user input comprising a first set of strokes; causing a representation of the first set of strokes to be displayed; whilst the representation of the first set of strokes is displayed, receiving a second user input comprising a second set of strokes; causing a representation of each of the second set of strokes to be displayed as it is received, the representation of the second set of strokes at least partially overlapping the representation of the first set of strokes; resolving the first user input into a first character; and resolving the second user input into a second character. | 11-29-2012 |
Changsong Ma, Guangzhou-Panyu, Guangdong CN
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20130169185 | ELECTRONIC BALLAST FOR LIGHTING UNIT AND LIGHTING APPARATUS - An electronic ballast for a lighting unit may include: a Power Factor Correction (PFC) circuit, an inverter, and a control circuit for controlling startup of the inverter, wherein the control circuit is coupled between the PFC circuit and the inverter and includes: a switching device coupled in a startup loop for the inverter; a unidirectional conductive device coupled between a PFC power supply circuit for providing an operation current to a PFC controller of the PFC circuit and an input of the PFC controller, for preventing a startup current flowing through the PFC circuit from triggering the switching device; and a triggering device coupled to the switching device and a connection point between the unidirectional conductive device and the PFC power supply circuit, for controlling switch-on and -off of the switching device. | 07-04-2013 |
Changsong Ma, Shanghai CN
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20130224064 | NON-ORIENTED ELECTRICAL STEEL PLATE WITHOUT CORRUGATED FAULT AND PRODUCTION METHOD THEREOF - A non-oriented electrical steel sheet without corrugated defect and a manufacturing method thereof is provided, the weight percentage of the chemical composition of the non-oriented electrical steel sheet is that C is no more than 0.005%, Si is 1.2-2.2%, Mn is 0.2-0.4%, P is no more than 0.2%, S is no more than 0.005%, Al is 0.2-0.6%, N is no more than 0.005%, O is no more than 0.005%, and a balance substantially being Fe, a slab can be obtained by hot metal preprocessing, smelting with converter, RH refining, and continuous casting and pouring, wherein a secondary cooling water amount is controlled, the water flowrate of cooling water is controlled to 100-190 l/min, the average superheat of liquid steel in the continuous casting process is controlled to 10-45° C., the slab is heated and hot rolled; wherein the furnace tap temperature of the slab is 1050-1150 ° C., the temperature difference between random two points in the length direction when the slab is heated, is lower than 25° C., the hot rolling process includes a rough rolling process and a planishing process, the entry temperature in the planishing process is no lower than 970° C.; the finished non-oriented electrical steel sheet is obtained by acid pickling, cold rolling, annealing and coating. No corrugated defect can be accomplished by controlling the cooling speed of the slab in continuous casting and pouring process, the temperature difference in the length direction of the slab in the heating furnace, and by controlling the temperature drop before planishing the slab. | 08-29-2013 |
Changsong Wang US
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20150259360 | METHOD FOR PREPARING CU-BTC AND NANO-CU-BTC - The methods for preparing Cu-BTC and nano-Cu-BTC are disclosed. An imporous coordination compound Cu(C | 09-17-2015 |
Changsong Yan, Yaan, Sichuan CN
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20160082956 | Automobile anti-collision and anti-misoperation throttle system with reply for controlling positive-negative rotation of motor - An automobile anti-collision and anti-misoperation throttle system with a relay for controlling positive-negative rotation of a motor relates to a system which directly transforms automobile anti-collision signals and throttle-misoperation signals into brake operating signals. The sensor switch (K | 03-24-2016 |
Changsong Yu, Changchun CN
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20140240697 | APPARATUSES AND METHODS FOR DETECTING WAVE FRONT ABBERATION OF PROJECTION OBJECTIVE SYSTEM IN PHOTOLIGHOGRAPHY MACHINE - Apparatus and methods for detecting wave front aberration of a projection objective lens in a photolithography machine are disclosed. The apparatus comprises: a light source system configured to generate an illuminating beam; a spatial filter configured to receive the illuminating beam and generate ideal spherical wave; a splitter plate arranged downstream to the spatial filter at a predetermined angle with respect to an optical axis of the spherical wave and having a transflective film being applied on a surface thereof; the projection objective lens configured to receive a beam from the splitter plate and generate an output beam; a spherical mirror configured to reflect the output beam from the projection objective lens to the projection objective lens, light passing through the projection objective lens being reflected by the splitter plate; and an interferometer configured to receive light reflected by the splitter plate and measure the wave front aberration of the projection objective lens. | 08-28-2014 |