Chuan-Chang
Chuan-Chang Chou, Taipei TW
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20090267418 | SWITCH POWER SUPPLY AND ELECTRONIC DEVICE HAVING SAME - A switch power supply includes an AC/DC converter, a DC/DC converter, a battery charge-discharge switching circuit, and a detecting and controlling circuit. The AC/DC converter receives an input AC voltage and converts the input AC voltage into a DC voltage. The DC/DC converter converts the DC voltage into several working voltages required for operating the electronic device. The battery charge-discharge switching circuit is selectively connected to the AC/DC converter or the DC/DC converter and connected to the battery. The detecting and controlling circuit detects the input AC voltage. If the input AC voltage is abnormal, the detecting and controlling circuit issues a control signal to the battery charge-discharge switching circuit. In response to the control signal, the battery issues a discharge voltage to the DC/DC converter and the discharge voltage is converted into the working voltages by the DC/DC converter. | 10-29-2009 |
20090268399 | FOLDABLE COMPUTER CHASSIS - A foldable computer chassis includes a first plate having multiple first fixing shafts and second fixing shafts, multiple second plates connected to two opposite edges of the first plate by the first fixing shafts, and multiple third plates movably and rotatably connected to the other two opposite edges of the first plate by the second fixing shafts. Each third plate has a fixing elastic element. When the computer chassis is folded, the second plates are rotated to lie on the first plate, and the third plates are moved and rotated to lie on the second plates. When the computer chassis is assembled, the second plates are rotated to stand on the first plate, and the third plates are moved and rotated to stand on the first plate. The fixing elastic elements on the third plates are provided for fastening the second plates with the third plates. | 10-29-2009 |
20090303672 | CABLE BOX AND PERSONAL COMPUTER HAVING SAME - A computer includes a computer case, a motherboard, a cable box, a power supply and a peripheral component. The computer case has a first disk drive slot and a second disk drive slot within the inner portion thereof. The cable box is installed in the first disk drive slot. The power supply is connected with the cable box through a power cord. The peripheral component is installed in the second disk drive slot, wherein electricity is transmitted from the power supply to the peripheral component through the cable box. | 12-10-2009 |
20100066329 | SUPPLY WITH FREQUENCY CONVERSION FUNCTION AND COMPUTER SYSTEM THEREOF - The invention discloses a power supply with a frequency conversion function. The power supply is connected with a motherboard. The power supply includes a pulse width modulation (PWM) controller, a direct current-direct current (DC-DC) converter, and a switch resistor modulation circuit. The PWM controller generates a PWM signal. The DC-DC converter is connected with the PWM controller and the motherboard, and it generates a plurality of voltages to the motherboard after it receives the PWM signal. The switch resistor modulation circuit provides a first resistance value and a second resistance value switched to correspondingly generate a first switching frequency or a second switching frequency. The second resistance value is larger than the first resistance value. The second switching frequency is smaller than the first switching frequency. | 03-18-2010 |
Chuan-Chang Hsu, Taipei City TW
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20080205787 | METHODS OF NOISE REDUCTION AND EDGE ENHANCEMENT IN IMAGE PROCESSING - Methods of noise reduction and edge enhancement in image processing. An exemplary method comprises extracting a plurality of pixels from the video signal, evaluating measures of edge existence in a plurality of directions within the extracted pixels, determining a level of variation from the measures of edge existence, mapping the level of variation to a first and second control signal in accordance with a predetermined function, performing noise reduction on the extracted pixels according to the first control signal, and performing edge enhancement on the extracted pixels according to the second control signal. | 08-28-2008 |
Chuan-Chang Lee, Yuanli Township TW
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20110220624 | METHOD FOR USE OF A DEVICE FOR CUTTING THE PERIPHERAL ISOLATION LINES OF SOLAR PANELS - The present invention provides a cutting method for a cutting device to cut the peripheral isolation lines of solar panels, having the following steps: preparing a solar panel and installing an image acquisition device at the corresponding position on the solar panel; setting the image acquisition device to move along the solar panel edge and acquire the image of the solar panel edge by means of located whole acquisition or line scan, and using an image processing device to calculate the location data of the edges of the solar panel; and setting a cutting device to cut the isolation line of the solar panel according to the edge location data. The present method can accurately judge the locations of the solar panel edges through image processing algorithm to find the parts near the margins and avoid defects, so that the solar panel can have maximum efficacy and utility. | 09-15-2011 |
Chuan-Chang Lee, Hsinchu County TW
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20150349650 | METHOD FOR COMMUNICATING ELECTRONIC APPARATUS WITH ADAPTOR VIA SPECIFIC COMMUNICATION INTERFACE TO ADJUST OPERATION BEHAVIOR OF ADAPTOR, ELECTRONIC APPARATUS, AND CORRESPONDING ADAPTOR - A method for communicating an electronic apparatus with an adaptor via a specific communication interface includes: communicating the electronic apparatus with the adaptor by using the electronic apparatus to generate a specific information pattern on a signal port of the specific communication interface; and in response to the specific information pattern received on the signal port, the adaptor adjusting at least one operation behavior. | 12-03-2015 |
Chuan-Chang Li, Sinfong Township TW
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20100141307 | Frequency multiplier and method for frequency multiplying - A frequency multiplier according to the present invention comprises a period-to-voltage converter that generates a control signal in response to the period of an input signal. An oscillator generates an output signal in accordance with the control signal. The level of the control signal is corrected to the frequency of the input signal. The control signal is coupled to determine the frequency of the output signal. | 06-10-2010 |
20100309694 | Start-up Circuit to Discharge EMI Filter for Power Saving of Power Supplies - A start-up circuit to discharge EMI filter is developed for power saving. It includes a detection circuit detecting a power source for generating a sample signal. A sample circuit is coupled to the detection circuit for generating a reset signal in response to the sample signal. The reset signal is utilized for discharging a stored voltage of the EMI filter. | 12-09-2010 |
Chuan-Chang Li, Hsinchu County 304 TW
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20110211281 | POWER SUPPLY WITH OPEN-LOOP PROTECTION - A power supply with an open-loop protection according to the present invention comprises a transformer, a switch, a signal generation circuit, a feedback detection circuit, a brown-out detection circuit, and a delay circuit. The transformer receives an input voltage. The switch is coupled to the transformer for switching the transformer. The signal generation circuit generates a switching signal to control the switch. The feedback detection circuit generates a pull-high signal in response to a feedback signal of the power supply. The brown-out detection circuit generates a delay signal in response to the pull-high signal and the input voltage. The delay circuit counts a delay time in response to the delay signal for generating a disabling signal coupled to the signal generation circuit to latch the switching signal. The brown-out detection circuit is utilized to detect whether the input voltage is in the brown-out condition for determining whether the open-loop protection is executed. | 09-01-2011 |