Patents by Inventor Erich Strasser

Erich Strasser has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7030368
    Abstract: A position measuring operation system for determining positions of a first object and a second object, which can be moved in relation to the first object, including a position measuring system having a light source that is operated in a pulsed manner and an evaluation unit connected to the position measuring device and arranged downstream of the position measuring device.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: April 18, 2006
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventor: Erich Strasser
  • Patent number: 7013575
    Abstract: A position measuring device including a code having a first code element and a second code element arranged one behind the other in a measuring direction, wherein each of the first and second code elements includes a first partial area and a second partial area, which are complementary to each other and are arranged sequentially in the measuring direction. A scanning device including a plurality of detector elements that scan the first and second code elements and for forming a first scanning signal within the first partial area of the first code element and a second scanning signal within the second partial area of the first code element. An evaluation unit including a comparison device, which compares the first scanning signal with the second scanning signal and forms binary information for the first code element as a function of the comparison.
    Type: Grant
    Filed: November 30, 2002
    Date of Patent: March 21, 2006
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventors: Erich Strasser, Rudolf Mittmann
  • Patent number: 6996494
    Abstract: A position measuring device having a scanning element assigned to a periodic measuring graduation, the scanning element moves relative to the measuring graduation so as to scan the measuring graduation and generates a first analog signal and a second analog signal that is phase shifted relative to the first analog signal. A module that forms a measured position value, wherein the first and second analog signals are present at the module, and a code word defines a position that is present at an output of the module. An output module that digitally outputs the code word over a data channel and a conversion device that converts the first analog signal and the second analog signal into multi-digit amplitude-proportional code words, wherein the code words are also available at the output module for outputting on the data channel and is digitally transmitted by the output module over the data channel.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: February 7, 2006
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventors: Jan Braasch, Hermann Hofbauer, Rudolf Mittmann, Erich Strasser, Sebastian Tondorf
  • Publication number: 20060009947
    Abstract: A position-measuring device having integrated function testing includes a position-recording unit, a processing unit, and a control-word generator. In a positional-data request, a positional-data word is first generated in the position-recording unit and output to the processing unit. There, the position data word is processed into a position value. Subsequently, a control-data word is generated in the position-recording unit according to the specification of the control-word generator and output to the processing unit. The processing unit processes the control-data word into a control value which has a defined mathematical relationship to the position value.
    Type: Application
    Filed: July 11, 2005
    Publication date: January 12, 2006
    Inventors: Erich Strasser, Elmar Mayer
  • Publication number: 20050273294
    Abstract: In a method for operating a positional measurement device and a corresponding positional measurement device, the device includes a signal generation unit configured to generate positional data and is connected to sequential or follower electronics by a communication unit. Data is transmitted between the signal generation unit and the communication unit via an internal interface unit, whereas measurement-data request instructions, which are transmitted by the sequential or follower electronics to the positional measurement device, are transmitted to the signal generation unit by bypassing the internal interface unit.
    Type: Application
    Filed: September 19, 2003
    Publication date: December 8, 2005
    Inventors: Hermann Hofbauer, Erich Strasser
  • Publication number: 20050246123
    Abstract: A measuring system includes a measuring device, another device and a device configured to transmit data enabling bits of data to be transmitted between the measuring device and the other device. The measuring device also includes a signal monitoring circuit and a switch element. The switch element is electrically contacted to a test potential source. The test potential source is in contact with the signal monitoring circuit according to a switch element state. The signal monitoring circuit is also in contact with the device for transmitting date. A method provides for functional monitoring of such a measuring system in a monitoring mode when a test potential is applied.
    Type: Application
    Filed: September 4, 2003
    Publication date: November 3, 2005
    Inventors: Hermann Hofbauer, Erich Strasser
  • Publication number: 20050072016
    Abstract: A position measuring device including a code having a first code element and a second code element arranged one behind the other in a measuring direction, wherein each of the first and second code elements includes a first partial area and a second partial area, which are complementary to each other and are arranged sequentially in the measuring direction. A scanning device including a plurality of detector elements that scan the first and second code elements and for forming a first scanning signal within the first partial area of the first code element and a second scanning signal within the second partial area of the first code element. An evaluation unit including a comparison device, which compares the first scanning signal with the second scanning signal and forms binary information for the first code element as a function of the comparison.
    Type: Application
    Filed: November 30, 2002
    Publication date: April 7, 2005
    Inventors: Erich Strasser, Rudolf Mittmann
  • Publication number: 20050073298
    Abstract: A method for detecting the angular change of a scanning device with respect to at least one scale of a position measuring system by detecting several angular positions of the scanning device in relation to the at least one scale by detecting position measurements of the scanning device at several scanning points and determining a value for a chronological progression of a change in angular positions of the scanning device from said detected several angular positions of the scanning device.
    Type: Application
    Filed: April 13, 2001
    Publication date: April 7, 2005
    Inventor: Erich Strasser
  • Patent number: 6806461
    Abstract: A position measuring device for generating position-dependent output signals that includes a scanning element by which a scanning plane is defined and a measuring graduation movable relative to the scanning element and defining a measuring graduation plane. The position measuring device further includes a regulating device for regulating output signals to constant signal amplitudes, in that the regulating device acts upon a predetermined controlling variable, to which end the requisite value of the controlling variable for the purpose of regulating is ascertained continuously by the regulating device.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: October 19, 2004
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventor: Erich Strasser
  • Patent number: 6801874
    Abstract: A position measuring device for determining the position of two elements, which are movable with respect to each other, the device including a voltage source and a scanning unit that includes one or more individual electrical components and a voltage monitoring unit that selectively supplies the one or more individual electrical components with a voltage from the voltage source.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: October 5, 2004
    Assignee: Johannes Heidenhain GmbH
    Inventor: Erich Strasser
  • Publication number: 20040193624
    Abstract: A system for determining a signal running time between a position measuring system and an evaluation unit. The system includes a position measuring system that has a graduation connected to a moving element, a scanning unit that scans the graduation, wherein scanning of the graduation generates signals representative of a position of the moving element and a transceiver means for generating serial data that is transmitted along a data line connected to the transceiver. The system further includes an evaluation unit connected to the data line, the evaluation unit having means for determining a signal running time between the position measuring system and the evaluation unit.
    Type: Application
    Filed: May 21, 2004
    Publication date: September 30, 2004
    Inventors: Hermann Hofbauer, Helmut Huber, Erich Strasser, Steffen Bielski
  • Publication number: 20040133373
    Abstract: The invention relates to a position measuring device (100), which supplies a multidigit code word (P) to a numeric control (300) via a serial interface (14). To determine the current functional state of the position measuring device (100) instantaneous values of analogue sampled signals (S6, S7) are also serially transmitted as multidigit amplitude-proportional code words (D6, D7). Said code words (D6, D7) are supplied to a diagnostic device (200), which displays a Lissajous figure (201) derived from said words, or independently performs an evaluation and generates warnings or alarms.
    Type: Application
    Filed: September 26, 2003
    Publication date: July 8, 2004
    Inventors: Jan Braasch, Hermann Hofbauer, Rudolf Mittmann, Erich Strasser, Sebastian Tondorf
  • Publication number: 20040129870
    Abstract: A method for position measurement that includes scanning a plurality of graduation periods of one incremental graduation by a detector arrangement extending over a length of one measurement range, a reference marking being integrated with one of the graduation periods, and generating a plurality of periodic scanning signals, of which at least one is locally modified by the reference marking. Detecting the at least one scanning signal, modified by the reference marking, from among the plurality of periodic scanning signals. Determining an absolute position of the reference marking within the length of said measurement range as a function of the scanning signal detected.
    Type: Application
    Filed: September 23, 2003
    Publication date: July 8, 2004
    Inventor: Erich Strasser
  • Publication number: 20040119000
    Abstract: A position measuring operation system for determining positions of a first object and a second object, which can be moved in relation to the first object, including a position measuring system having a light source that is operated in a pulsed manner and an evaluation unit connected to the position measuring device and arranged downstream of the position measuring device.
    Type: Application
    Filed: February 13, 2004
    Publication date: June 24, 2004
    Inventor: Erich Strasser
  • Patent number: 6738802
    Abstract: A method for transmitting data among various memory units of one or more position measuring devices, specific data pertaining to the position measuring device being stored in the memory units. Data are transmitted via a data transmission line, from a first memory unit into a second memory unit, so that once the data are transmitted, the identical, specific data are at least partially contained in both memory units.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: May 18, 2004
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventors: Erich Strasser, Rudi Mittmann
  • Patent number: 6683545
    Abstract: In a multiturn rotary encoder, a first code disk is arranged with an input shaft for detecting the angular position of the input shaft within one rotation. To detect the number of rotations of the input shaft, a multiturn part is provided with further code disks in the form of magnet bodies which are driven geared down. A printed circuit board having detector devices for scanning the first code disk and the magnet bodies is positioned between the first code disk and the multiturn part. The detector devices of the first code disk and of the magnet bodies are mounted on one common side of a printed circuit board which is opposite the first code disk.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: January 27, 2004
    Assignee: Dr. Johannes Heidenhain GmbH
    Inventor: Erich Strasser
  • Publication number: 20030112157
    Abstract: In a multiturn rotary encoder, a first code disk is arranged with an input shaft for detecting the angular position of the input shaft within one rotation. To detect the number of rotations of the input shaft, a multiturn part is provided with further code disks in the form of magnet bodies which are driven geared down. A printed circuit board having detector devices for scanning the first code disk and the magnet bodies is positioned between the first code disk and the multiturn part. The detector devices of the first code disk and of the magnet bodies are mounted on one common side of a printed circuit board which is opposite the first code disk.
    Type: Application
    Filed: September 30, 2002
    Publication date: June 19, 2003
    Inventor: Erich Strasser
  • Patent number: 6542088
    Abstract: A multi-turn rotary encoder that includes a first code carrier connected with an input shaft, a scanning device that scans the first code carrier and generates an absolute position of the input shaft within one revolution, and a digital code word is present at an output of the scanning device and a second code carrier for measuring the number of revolutions of the input shaft. A reduction gear is arranged between and coupled to the first and second code carriers. The second code carrier includes a magnetic body with at least one north and south pole and a substrate with a spatial arrangement of sensor elements integrated therein, which are sensitive to magnetic fields, is associated with the magnetic body.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: April 1, 2003
    Assignee: Dr. Johannes Heidenheim GmbH
    Inventors: Steffen Bielski, Kurt Feichtinger, Alfons Spies, Erich Strasser, Johann Mitterreiter, Hermann Meyer, Andreas Schroter
  • Publication number: 20020072877
    Abstract: A position measuring device for determining the position of two elements, which are movable with respect to each other, the device including a voltage source and a scanning unit that includes one or more individual electrical components and a voltage monitoring unit that selectively supplies the one or more individual electrical components with a voltage from the voltage source.
    Type: Application
    Filed: November 8, 2001
    Publication date: June 13, 2002
    Inventor: Erich Strasser
  • Publication number: 20020015389
    Abstract: A method for serial data transmission between a position measuring system and a processing unit that includes transmitting position data and further data between the position measuring system and the processing unit in serial form as digital data words, transmitting up-to-date position data between the position measuring system and the processing unit upon a position request command and always transmitting further data, whose processing is not time-critical, immediately following the up-to-date position data.
    Type: Application
    Filed: June 18, 2001
    Publication date: February 7, 2002
    Inventors: Robert Wastlhuber, Erich Strasser, Christian Eisenberger, Erwin Bratzdrum