Patent application number | Description | Published |
20090067715 | ELECTRONIC VISION AID AND ELECTRONIC VISION AID METHOD - An electronic visual aid is provided that includes an evaluating unit, which is supplied with a recording of an information carrier on which information standing out visibly from the background is displayed. The evaluating unit determines a brightness distribution of the recording and derives from the brightness distribution a brightness threshold value lying in the transition zone between a zone of the brightness distribution associated with the background and a zone of the brightness distribution associated with the information. The visual aid also includes an image processing unit which generates from the recording a binary image having only two different, predetermined brightness values, by respectively assigning to the pixels of the binary image the first of the two brightness values when the brightness of the corresponding pixel of the recording is below the brightness threshold value, and otherwise assigning the second brightness value. Also included is a display unit which displays the binary image and is provided as an HMD device. | 03-12-2009 |
20100214414 | HMD APPARATUS FOR USER WITH RESTRICTED FIELD OF VISION - An HMD apparatus including a head mount to be mounted on the head of a user, a camera having a predetermined field of view, and a display module, both mounted to the head mount. When the head mount is mounted on the head, the predetermined field of view is greater than a visual field of a first eye of the user, and the camera records an image of the surroundings located in the field of view in the viewing direction of the first eye. The camera transmits the image to the display module which presents the image to the first eye of the user such that the image is located completely within the user's visual field. | 08-26-2010 |
20100321277 | HMD SYSTEM AND DISPLAY METHOD FOR AN HMD SYSTEM - An HMD system including an image data module, which includes an enabling unit and a data unit, as well as a display module that can be mounted on the head of a user and is connected to the image data module via a bidirectional communication channel. The enabling unit transmits an enabling request to the display module via the communication channel, and the display module transmits an enabling code via the communication channel in response to the enabling request. The enabling unit verifies the validity of the enabling code, prevents transmission of image data from the data unit to the display module if an invalid enabling code is present and allows transmission of image data from the data unit to the display module if a valid enabling code is present. The display module presents an image based on the transmitted image data to the user wearing the display module on his head. | 12-23-2010 |
20110157603 | METHOD AND DEVICE FOR DETERMINING A POSITION OF AN OBJECT - A device for determining a position of an object ( | 06-30-2011 |
20110176146 | DEVICE AND METHOD FOR MEASURING A SURFACE - A device for measuring a surface ( | 07-21-2011 |
20120086933 | EVALUATION DEVICE, MEASURING ARRANGEMENT AND METHOD FOR PATH LENGTH MEASUREMENT AND MEASURING SYSTEM AND METHOD FOR A COORDINATE MEASURING DEVICE AND COORDINATE MEASURING DEVICE - An evaluation device for path length measurement configured to evaluate a measured signal representing an intensity of a sequence of pulses of electromagnetic radiation, particularly a sequence of light pulses, as a function of time, after the sequence has traveled through a path length to be measured. The sequence of light pulses is generated with a repetition rate by a radiation source, particularly a light source. The evaluation device is configured to evaluate a first component of the measured signal, which oscillates with a first frequency, and a second component of the measured signal, which the second component oscillates with a second frequency that is greater than the first frequency. The first frequency may correspond to the repetition rate or a multiple of the repetition rate. The second frequency may correspond to another multiple of the repetition rate. | 04-12-2012 |
20120092644 | EVALUATION DEVICE, MEASURING ARRANGEMENT AND METHOD FOR PATH LENGTH MEASUREMENT - An evaluation device, measuring arrangement and method for path length measurement. The evaluation device for path length measurement is configured to evaluate a measured signal which represents an intensity of a sequence of pulses of electromagnetic radiation as a function of time. The sequence of pulses has a repetition rate. The evaluation device is configured to determine a phase difference between a component of the measured signal, the component oscillating with a frequency, and a reference signal which oscillates with the frequency. For this purpose, the evaluation device generates, for example by frequency mixing, a first signal and a second signal which have another phase difference, such that the first signal and the second signal each oscillates with another frequency which is different from said frequency, and that the other phase difference has a predetermined relation to the phase difference. | 04-19-2012 |
20120218563 | DEVICES AND METHODS FOR POSITION DETERMINATION AND SURFACE MEASUREMENT - In an embodiment a method for position determination of an object ( | 08-30-2012 |