Patent application number | Description | Published |
20090102514 | Duty cycle detecting circuit for pulse width modulation - A duty cycle detecting circuit for pulse width modulation (PWM) is disclosed. The circuit comprises a clock generating circuit, a sampling circuit and a calculation circuit. The clock generating circuit is for generating a clock signal. The sampling circuit receives a PWM signal and the clock signal, samples the PWM signal based on the clock signal, and generates a sampling signal. The calculation circuit is for calculating the duty cycle of the PWM signal based on the sampling signal. | 04-23-2009 |
20090160514 | Chip structure capable of smoothing slope of signal during conversation - The present invention discloses a chip structure capable of smoothing slope of signal during conversion. And the chip structure is suitable for a DC motor which is embedded in a portable electronic device. The DC motor is for adjusting the focal distance of a digital camera which is installed within the portable electronic device. The chip structure comprises an input terminal, a first converter, a control unit, a second converter, an amplifier circuit and an output terminal. The input terminal is for receiving a first digital signal. The first converter is for converting the first digital signal into an analog signal. The control unit is for elongating the transform time of the analog signal. The amplifier circuit is for amplifying the elongated analog signal. The second converter is for converting the elongated analog signal into a second digital signal. And the output terminal outputs the second digital signal. | 06-25-2009 |
20140097825 | Duty Cycle Detecting Circuit for Pulse Width Modulation - A duty cycle detecting circuit for pulse width modulation (PWM). The circuit includes a clock generating circuit, a sampling circuit and a calculation circuit. The clock generating circuit is for generating a clock signal. The sampling circuit receives a PWM signal and the clock signal, samples the PWM signal based on the clock signal, and generates a sampling signal. The calculation circuit is for calculating the duty cycle of the PWM signal based on the sampling signal. | 04-10-2014 |
Patent application number | Description | Published |
20090072112 | Supporting structure and tension adjusting mechanism thereof - The present invention relates to a supporting structure, includes a retractable connecting unit, a bottom pivotal shaft device, a top pivotal shaft device and at least one linking device. The retractable connecting unit is that a slid engaging sheet is provided on top of a fixed engaging sheet, and an adjusting member is provided between the fixed and the slid engaging sheets, a bottom end and a top end are respectively provided at the bottom portion and the top portion of the retractable connecting unit. The linking device is that a bottom shaft wheel and a top shaft wheel are respectively provided between the bottom end and the top end of the lateral side of the connecting unit and between bottom supporting racks of the bottom pivotal shaft device and top supporting racks of the top pivotal shaft device, and respectively and pivotally connecting to the bottom pivotal shaft device and the top pivotal shaft device, and a flexible band is provided between the top and the bottom shaft wheels; by adjusting the adjusting member, the slid engaging sheet can move alongside the fixed engaging sheet, so the lengths of the retractable connecting unit and the top and the bottom shaft wheels disposed at the lateral side of the retractable connecting unit are changed, and a proper tension is maintained by the flexible band. | 03-19-2009 |
20090134286 | Support Structure Torque Transfer Function - The present disclose a support structure with torque transfer function, comprising a link member, whose bottom and top portions have an upper end and a lower end, respectively; a pair of main supports oppositely and perpendicularly disposed at the surface of the base member and are pivoted to the lower end of the link member through an intermediate hinges, such that the link member is rotatably pivoted between the two main brackets; a base member having a pair of oppositely and perpendicularly arranged auxiliary brackets disposed at one side of the pair of main brackets, a base hinge pivoted between the pair of main brackets and the pair of auxiliary brackets, and a base hinge socketingly connected to a resilient support and disposed between the main brackets and the auxiliary brackets, respectively, having one end passing through the auxiliary bracket and socketingly connected to a linkage part and the other end passing the main bracket; and a torque transfer device having upper and lower rotation parts pivoted to the intermediate hinge and the base hinge so as to move synchronously together and a connecting part linking the upper and lower rotation parts to rotate in the same direction, thereby forming a torque transmission path. | 05-28-2009 |
20090242722 | Planar rotation mechanism of supporting device - The present invention relates to a planar rotation mechanism of supporting device, includes a base seat; a supporting rack; a retaining member and a position located at a top portion of a lateral side of the retaining member, a diagonal position of the retaining member and a position between the above two positions are respectively provided with a first, a second and a third guiding slots with different curvatures and lengths; and a rotating member respectively provided with a column hole with respect to the initial positions of the first, the second and the third guiding slots for allowing a first, a second and a third guiding columns respectively pass through the corresponding column holes and the corresponding guiding slots, so the guiding columns can respectively slide within the corresponding guiding slots; so when the rotating member is operated with a planar rotation with an object to be supported provided in front of the rotating member, the plural guiding columns slide within the corresponding guiding slots, a corner of one lateral side of the object to be supported is firstly moved a small distance alongside the bottom end of the object to be supported, then is rotated, so a horizontal status of the object to be supported is switched to a vertical status or vice versa. | 10-01-2009 |
20100006730 | Supporting Structure Having Function of Rod-Linkage Latching - The present invention relates to a supporting structure having function of rod-linkage latching which comprises a connecting unit, a base seat, a base seat hinge, a main hinge, at least one rod-linkage mechanism and at least one rod-linkage latching device. By providing a rod-linkage latching device between a connecting unit and a rod-linkage mechanism the two connecting rods of the rod-linkage mechanism generate a relative movement while the connecting unit performs tilt angle adjusting toward the base seat, so a tenon sheet of one connecting rod is moved and a latching member of the rod-linkage latching device loses stop and extends then the movement of the tenon sheet is limited thus a locking status is formed, so a torsion spring disposed between the connecting unit and the base seat is pressed so an energy saving status is formed, therefore the connecting unit has a certain angle with respect to the base seat and an advantage of saving volume while packaging and conveying is achieved, and the supporting structure provided by the present invention can be disposed vertically or be hanged. | 01-14-2010 |