Integrated Solutions Technology, Inc. Patent applications |
Patent application number | Title | Published |
20150035813 | DRIVE CIRCUIT OF ORGANIC LIGHT EMITTING DISPLAY AND OFFSET VOLTAGE ADJUSTMENT UNIT THEREOF - A drive circuit of an organic light emitting display and an offset voltage adjustment unit thereof are provided. The offset voltage adjustment unit can be used in an operational amplifier of the drive circuit having a differential input stage, a bias stage, and an output stage. The offset voltage adjustment unit coupled between the bias stage and a ground including a resistor string and a plurality of latch units. The resistor string has a first-end, a second-end, and a plurality of resistors series-connected between the first-end and the second-end forming a plurality of junctions. The latch units are coupled between the junctions and the ground, respectively. The latch units are sequentially conducted to adjust a bias current of the bias stage according to a control signal. The latch units enter a latch state upon receiving a latch signal to calibrate an output offset voltage of the operational amplifier. | 02-05-2015 |
20150009240 | GAMMA REFERENCE VOLTAGES GENERATING CIRCUIT WITH OUTPUT OFFSET AND DISPLAY APPARATUS - A gamma reference voltages generating circuit with output offset for controlling a gray level of a light-emitting unit is provided. The light-emitting unit includes a switch and a light-emitting element which is coupled to a bias voltage. The gamma reference voltages generating circuit includes a first gamma voltage divider and a digital-to-analog converter. The first gamma voltage divider includes a plurality of resistors. A first terminal of the first gamma voltage divider is coupled to the bias voltage, and a second terminal of the first gamma voltage divider is coupled to a reference current source. The digital-to-analog converter is coupled to the first gamma voltage divider to receive a plurality of reference voltages generated by the first gamma voltage divider. The digital-to-analog converter is controlled by a digital control signal to output one of the reference voltages to a control terminal of the switch in the light-emitting unit. | 01-08-2015 |
20140368459 | TOUCH DEVICE AND SENSING CIRCUIT THEREOF - A touch device includes a touch panel and a sensing circuit. The touch panel has vertical electrode-lines and horizontal electrode-lines. The sensing circuit includes a scan signal generator, which sequentially generates a plurality of scan signals to the plurality of horizontal electrode-lines. A plurality of sensing units senses the change in capacitance of the plurality of vertical electrode-lines and outputs a first sensing voltage and a second sensing voltage. A subtractor senses the difference between the first and the second sense voltages to output a horizontal voltage difference or a vertical voltage difference. When one of the sensing unit outputs the first and the second sensing voltages, the subtractor outputs the horizontal voltage difference between the two adjacent horizontal electrode-lines. When two adjacent sensing units output the first and the second sensing voltages, the subtractor output the vertical voltage difference between the two adjacent vertical electrode-lines. | 12-18-2014 |
20130314065 | LOAD-ADAPTIVE POWER GENERATOR - The present invention includes a load-adaptive power generator including a feedback detecting module, a load determining module, a load driving module, and a control module. The feedback detecting module detects a load voltage of a load device, and converts the load voltage into a feedback voltage. The load determining module determines whether the feedback voltage is within a preset range for generating a periodical load driving signal. The load driving module has a plurality of driving units and at least one switch. The driving units drive the load device according to the load driving signal, and at least one driving unit receives the load driving signal through the switch. The control module turns on the switch when the frequency of the load driving signal is less than a frequency threshold. Accordingly, the load-adaptive power generator of the present invention can save energy. | 11-28-2013 |
20130076440 | OPERATIONAL AMPLIFIER CIRCUIT STRUCTURE - An operational amplifier circuit structure is provided. The operational amplifier circuit structure includes a first current mirror associated with a first current mirror ratio, a second current mirror coupled to the first current mirror and associated with a second current mirror ratio, an input portion coupled to the first current mirror and the second current mirror, an output portion coupled between the input portion and the first current mirror and the input portion and the second current mirror, and associated with a first output impedance and a second output impedance, respectively, and a current source coupled to the input portion. | 03-28-2013 |
20100026668 | DRIVING METHOD AND DEVICE FOR GENERATING ACTIVATING SIGNALS THAT SERVE TO ACTIVATE SCAN LINES OF A DISPLAY PANEL, AND METHOD FOR ADJUSTING PULSE DURATIONS OF THE ACTIVATING SIGNALS - A driving method for generating activating signals that serve to activate scan lines of a display panel includes generating the activating signals based on a plurality of recorded pulse duration information to thereby permit a time point at which a pulse duration of a preceding one of the activating signals in a consecutive pair ends occurs prior to a time point at which a pulse duration of a succeeding one of the activating signals in the consecutive pair starts. A driving device that performs the driving method is also disclosed. A method for adjusting pulse durations of the activating signals is further disclosed. | 02-04-2010 |
20100026617 | METHOD AND DEVICE FOR ACTIVATING SCAN LINES OF A PASSIVE MATRIX LIQUID CRYSTAL DISPLAY (LCD) PANEL - A method for activating scan lines of a passive matrix liquid crystal display (LCD) panel includes activating the scan lines of the passive matrix LCD panel in a selected one of an interlaced scanning mode and a progressive scanning mode that is selected based on a select signal. A device that performs the method is also disclosed. | 02-04-2010 |