Cheng-Sung
Cheng-Sung Chen, Tou-Liu City TW
Patent application number | Description | Published |
---|---|---|
20100320355 | CLIPBOARD - A clipboard includes a main plate having top and bottom faces and lateral sides, and a clip plate of triangular cross section and including a mid-portion provided at one of the lateral sides, top and bottom plate portions extending convergingly from two opposite ends of the mid-portion and having converging distal press ends abutting respectively against the top and bottom faces of the main plate, and two press levers connected pivotally and respectively to the distal press ends of the top and bottom plate portions. A fixing plate has two opposite ends fixed to the bottom face of the main plate, and a middle section between the ends of the fixing plate and pressing the bottom plate portion against the bottom face of the main plate, thereby fixing the bottom plate portion to the main plate. | 12-23-2010 |
Cheng-Sung Chen, Taichung City TW
Patent application number | Description | Published |
---|---|---|
20120069611 | Correction Circuit of a Switching-Current Sample for Power Converters in Both CCM and DCM Operation - The present invention provides a correction circuit for a power converter. The correction circuit includes a sampling circuit, a demagnetizing-time circuit, a duty circuit, and a compensation circuit. The sampling circuit generates an average-current signal in response to a switching current of the power converter. The demagnetizing-time circuit generates a discharging-time signal in response to a switching signal and an input-voltage signal. The duty circuit generates a duty signal in response to the discharging-time signal, an on-time of the switching signal, and a switching period of the switching signal. The compensation circuit is coupled to receive the average-current signal and the duty signal for generating a corrected signal. The switching signal is utilized to switch a magnetic device for regulating an output voltage of the power converter. The corrected signal is coupled to generate the switching signal. | 03-22-2012 |
20130141056 | ADAPTIVE FREQUENCY COMPENSATION FOR PFC POWER CONVERTER OPERATING IN CCM AND DCM - A control circuit of a power factor correction (PFC) converter is provided. The control circuit includes a pulse width modulation (PWM) circuit, an amplifier, a detection circuit., and a capacitor. The PWM circuit generates a switching signal in response to a loop signal. The amplifier is coupled to generate the loop signal in response to a switching current. The detection circuit generates a mode signal coupled to change output impedance of the amplifier. The capacitor is coupled to the amplifier for loop frequency compensation. The switching signal is coupled to switch an inductor of the PFC power converter and generate the switching current. | 06-06-2013 |
20130147452 | SWITCHING CURRENT SYNTHESIS CIRCUIT FOR POWER CONVERTER - A control circuit of a power converter is provided. The control circuit comprises a PWM circuit, a sample circuit, and emulation circuit. The PWM circuit generates a switching signal for switching an inductor and generating a switching current of the inductor in response to a current feedback signal. The sample circuit is coupled to sample a switching current signal into a capacitor during an on time of the switching signal. The emulation circuit generates a discharge current couple to discharge the capacitor during an off time of the switching signal for generating the current feedback signal. The switching current signal is correlated to the switching current of the inductor, and the discharge current is generated in response to an input voltage of the inductor, an output voltage of the power converter, and the on time of the switching signal. | 06-13-2013 |
Cheng-Sung Huang, New Taipei TW
Patent application number | Description | Published |
---|---|---|
20120228346 | HANDHELD ACCESSORY FOR TABLET COMPUTERS - A handheld accessory for tablet computers is disclosed, which comprises: a retaining component, configured with an accommodation space, that is formed inside the retaining component, and at least two claws, that are to be used for fixedly holding on to the periphery of a tablet computer; a rotary component, disposed inside the accommodation space of the retaining component while allowing the same to rotation clockwisely and counterclockwisely inside the accommodation space; and two movable brackets, mounted on the rotary component by the use of a plurality of fixing elements while allowing the two movable brackets to sway in a vertical direction and in a horizontal direction on the rotary component. | 09-13-2012 |
Cheng-Sung Lee, Taipei City TW
Patent application number | Description | Published |
---|---|---|
20090295716 | METHOD FOR MOVING CURSOR AND STORAGE MEDIUM THEREOF - A method for moving cursor and a storage medium thereof are provided for a computer system connected to a first display and a second display. In the present method, a user-define cursor position in the second display is stored when a cursor position storing instruction is received. After a cursor moving instruction is received, the cursor located in the first display is switched and displayed at the user-define cursor position in the second display. And the cursor in the second display is switched and displayed on the previous position of the first display if the cursor moving instruction is received again. As a result, the operation of dragging a mouse repeatedly to move the cursor can be avoided, so that the cursor can be directly and quickly moved to a position predetermined by a user. Accordingly, utilization facility of an extended display is improved. | 12-03-2009 |
Cheng-Sung Lee, Taipei TW
Patent application number | Description | Published |
---|---|---|
20090210187 | Testing system and its method for recognizing the number sequence - The present invention relates to a testing system, which comprises: an electronic apparatus at least having an embedded controller, a connector and a communication interface; a microcontroller having a connection interface consisted of a second set of input signal lines that are coupled to a first set of output signal lines of the embedded controller, and a second set of output signal lines that are coupled to a first set of input signal lines of the embedded controller; and a testing program installed in the electronic apparatus for respectively sending data to the embedded controller and the microcontroller or receiving data from the embedded controller and the microcontroller. Whereby, when the testing system is being operated, the testing program controls the embedded controller and the microcontroller to recognize the number sequence of the second set of input signal lines and the second set of output signal lines. Furthermore, the present invention also provides a method for recognizing the number sequence of the data signal lines in a testing system. | 08-20-2009 |