Miroslav Living Oljaca

US Patent:

6587062, Jul 1, 2003

Filed:

Mar 25, 2002

Appl. No.:

10/105701

Inventors:

Michael Reinhold - Bavaria, DE
Miroslav Oljaca - Tucson AZ

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03M 300

US Classification:

341143, 341155, 341 77

Abstract:

A multi-mode interface circuit for coupling a delta sigma modulator ( ) to a processor includes a decoder for decoding mode selection inputs to produce a plurality of control signals controlling an oscillator and a plurality of multiplexers. The oscillator is enabled to produce a first clock signal (INTCLK). The first clock signal or an external clock signal (EXTCLK) is multiplexed as a second clock signal ( ) to the input of a code generator circuit ( ), causing it to generate a clock input signal (MCLK) applied the delta sigma modulator, third and fourth clock signals ( ), and a phase-shift-modulated signal ( ) in response to both the second clock signal and a 1-bit data signal (MDAT) produced by the delta sigma modulator. One of the third and fourth clock signals and a ground signal is multiplexed to a clock conductor ( ). The phase-shift-modulated signal or the 1-bit data signal is multiplexed onto a data output conductor ( ).

US Patent:

7098617, Aug 29, 2006

Filed:

Feb 16, 2005

Appl. No.:

11/059250

Inventors:

Miroslav Oljaca - Tucson AZ, US
Jeffrey David Johnson - Tucson AZ, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H02P 1/00
G06F 15/18

US Classification:

318268, 318600, 318811, 318599, 706 52, 417 14

Abstract:

A fan control system and method that maintains the operating temperature of computer and electronic devices or components at about a predetermined control level to minimize power consumption and audible noise. The fan control system is a programmable closed loop system including a temperature sensor, first and second fan controllers, and a fan/motor assembly including a power converter, a motor, and a fan. The first fan controller provides programmable acceleration/deceleration of the fan during an initial fan spin up, and the second fan controller runs the fan only as fast as necessary to keep the sensed temperature level of a computer device as close as possible to the predetermined control level, thereby minimizing the power consumption of the system and the audible noise of the fan.

US Patent:

20130187895, Jul 25, 2013

Filed:

Jan 20, 2012

Appl. No.:

13/354362

Inventors:

Miroslav Oljaca - Tucson AZ, US
Srinivas K. Pulijala - Tucson AZ, US

Assignee:

STANDARD MICROSYSTEMS CORPORATION - HAUPPAUGE NY

International Classification:

G06F 3/041

US Classification:

345178

Abstract:

The present disclosure discloses methods and systems for improving touch detection of a touch screen device. The method includes determining touch coordinates when the touch screen device is touched. Subsequently, a sampling time is adjusted, depending on the touch coordinates relative to initial coordinates of the touch screen device.

US Patent:

20130227307, Aug 29, 2013

Filed:

Feb 28, 2012

Appl. No.:

13/407153

Inventors:

Timothy J. Knowlton - Benson AZ, US
Miroslav Oljaca - Tucson AZ, US

International Classification:

G06F 1/26

US Classification:

713300

Abstract:

A port power switch (PPS) may be used for lead compensation in systems where power is provided to a connected device by a switch-mode power supply (SMPS). The PPS may be designed to co-operate with the SMPS, providing a mechanism for the feedback reference point of the SMPS to be automatically switched, in the event of system fault or some other condition that might result in the PPS entering an “OFF’ operating mode, from the application point of load (POL) to the voltage input pin of the PPS without loss of power path continuity. The switching mechanism and the PPS may be manufactured to reside on the same integrated circuit. The PPS may include a control block that generates a control signal to couple the feedback port of the SMPS to the POL under normal operation, and to the voltage input port of the PPS during a fault condition.

US Patent:

20130238819, Sep 12, 2013

Filed:

Mar 6, 2012

Appl. No.:

13/413146

Inventors:

Miroslav Oljaca - Tucson AZ, US
Timothy J. Knowlton - Benson AZ, US
Xiaoliang Xia - Hangzhou, CN

International Classification:

G06F 3/00
G06F 13/00
G06F 13/20

US Classification:

710 15, 710313, 710303

Abstract:

System and method for a USB host to determine whether or not a USB device provides power via a USB coupling between the USB host and the USB device. At a first time, it may be determined that the USB device is coupled to the USB host via a USB coupling and does not provide power. Power may be provided to the USB device via the USB coupling. At a second time it may be determined that the USB device does provide power via the USB coupling. Power may no longer be provided to the USB device via the USB coupling after it is determined that the USB device does provide power via the USB coupling. A battery of the USB host may be charged using power provided by the USB device via the USB coupling based on determining that the USB device does provide power via the USB coupling.

US Patent:

20130342141, Dec 26, 2013

Filed:

Mar 14, 2013

Appl. No.:

13/826898

Inventors:

Marc John Kobayashi - Tucson AZ, US
Stephen James Sanchez - Tucson AZ, US
John L. Melanson - Austin TX, US
Miroslav Oljaca - Tucson AZ, US

Assignee:

Cirrus Logic, Inc. - Austin TX

International Classification:

H02P 6/18

US Classification:

31840006, 31840033

Abstract:

A system is disclosed for controlling motor switching in a sensorless BLDC motor having a set of three stator windings. A controller unit includes a control signal generator, a memory device, a processing unit, a signal acquisition device, and an analog-to-digital converter. A power stage having a plurality of switches receives a control signal from the control signal generator and a power signal from a power source. The power stage drives two windings of the set of three stator windings with an asymmetric pulse width modulation signal and leaves one stator of the three stator windings undriven. The processing unit acquires a demodulated measured voltage on the undriven winding. The processing unit also communicates with the power stage to change which two windings of the three stator windings are driven when the demodulated measured voltage surpasses a threshold.

US Patent:

20130342145, Dec 26, 2013

Filed:

Mar 15, 2013

Appl. No.:

13/835101

Inventors:

Jason William Lawrence - Austin TX, US
Stephen James Sanchez - Tucson AZ, US
John L. Melanson - Austin TX, US
Miroslav Oljaca - Tucson AZ, US

Assignee:

Cirrus Logic, Inc. - Austin TX

International Classification:

H02P 6/18

US Classification:

31840033

Abstract:

The system and method disclose for the controlling of sequential phase switching in driving a set of stator windings of a multi-phase sensorless brushless permanent magnet DC motor. A motor controller controls a power stage that drives two windings of a set of three windings in the motor with pulse width modulated signal. A plurality of voltage values on an undriven winding of the set of three windings are sampled within a window of time, wherein a period beginning when the driven windings are energized and ending when the driven windings are de-energized encompasses the window of time. The sampled voltage values are processed. When the processed voltage values exceed a threshold, the motor controller changes which two windings are driven.

US Patent:

20130342146, Dec 26, 2013

Filed:

Mar 15, 2013

Appl. No.:

13/835385

Inventors:

Marc John Kobayashi - Tucson AZ, US
John L. Melanson - Austin TX, US
Miroslav Oljaca - Tucson AZ, US

Assignee:

Cirrus Logis, Inc. - Austin TX

International Classification:

H02P 6/18

US Classification:

31840033

Abstract:

The system and method disclose for the controlling of motor switching. The system includes a controller unit having a control signal generator, a memory device, a processing unit, a signal acquisition device, and an analog-to-digital converter. A power stage has a plurality of switches and receives a control signal from the control signal generator and a power signal from a power source. The power stage drives two windings of the set of three stator windings with a multi-state pulse and leaves one stator of the three stator windings undriven. The processing unit acquires a demodulated measured voltage on the undriven winding. The processing unit communicates with the power stage to change which two windings of the three stator windings are driven when the demodulated measured voltage surpasses a threshold.