DETELIN BORISLAVOV MARTCHOVSKY
Pilots at Adams Ave, Fremont, CA
License number
California A4199973
Issued Date
Oct 2015
Expiration Date
Oct 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
4138 Adams Ave, Fremont, CA 94538
Professional information
Method And Apparatus For Detecting Two Simultaneous Touches And Gestures On A Resistive Touchscreen
US Patent:
2009032, Dec 31, 2009
Filed:
Jun 30, 2008
Appl. No.:
12/165243
Inventors:
HENRY M. D'SOUZA - SAN DIEGO CA, US
RaeAnne L. Dietz - SAN FRANCISCO CA, US
JOEL C. KENT - FREMONT CA, US
DETELIN MARTCHOVSKY - FREMONT CA, US
RaeAnne L. Dietz - SAN FRANCISCO CA, US
JOEL C. KENT - FREMONT CA, US
DETELIN MARTCHOVSKY - FREMONT CA, US
Assignee:
TYCO ELECTRONICS CORPORATION - BERWYN PA
International Classification:
G06F 3/045
US Classification:
345174
Abstract:
Resistive touchscreen system has substrate and coversheet with first and second conductive coatings. The substrate and coversheet are positioned proximate each other such that the first conductive coating faces the second conductive coating. The substrate and coversheet are electrically disconnected with respect to each other in the absence of a touch. First set of electrodes is formed on the substrate for establishing voltage gradients in first direction. Second set of electrodes is formed on the coversheet for establishing voltage gradients in second direction wherein the first and second directions are different. Controller biases the first and second sets of electrodes in first and second cycles and senses a bias load resistance associated with at least one of the sets of electrodes. The bias load resistance has a reference value associated with no touch. A decrease in the bias load resistance relative to the reference value indicates two simultaneous touches.
Capacitive Touch Sensor
US Patent:
2005016, Jul 28, 2005
Filed:
Jan 27, 2005
Appl. No.:
11/046372
Inventors:
Detelin Martchovsky - Fremont CA, US
Assignee:
Elo TouchSystems, Inc. - Menlo Park CA
International Classification:
G09G005/00
US Classification:
345173000
Abstract:
A method for determining the location of a touch made to a capacitive touchscreen in which the touchscreen includes a plurality of electrodes distributed around a touch sensitive area of the touchscreen, and a control circuit connected to the plurality of electrodes. The control circuit includes circuitry for measuring capacitance on the sensor, and provides a control signal indicating coordinates of a touch position on the screen, and includes multiple input/output connections, and multiple sub-circuits, where one sub-circuit is associated with one electrode. The method includes using a first switching element of each sub-circuit, when closed, to connect an electrode to an energy storage element which is in turn connected to a reference or ground, and using a second switching element, when closed, to connect the energy storage element to a detector. The method includes charging an electrode to a set voltage level when the associated first and second switching elements are closed and opened, respectively, and measuring energy in the energy storage element with the detector when the first and second switching elements are opened and closed, respectively.
System And Method For Communication Handshaking Between A Master Processors And A Slave Processor
US Patent:
8510492, Aug 13, 2013
Filed:
Sep 8, 2010
Appl. No.:
12/877259
Inventors:
Detelin Martchovsky - Fremont CA, US
Assignee:
Integrated Device Technology inc. - San Jose CA
International Classification:
G06F 13/24, G06F 9/48
US Classification:
710267, 710260
Abstract:
System and method for handshaking between first and second processors via a single wire connecting a first pin of the first processor and a second pin of the second processor are described. In one embodiment, the method comprises the first processor disabling an interrupt function on the first pin; and, subsequent to the disabling, interrupting the second processor by driving the first pin to a first logic level and then releasing the first pin to a second logic level.