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21. 发明授权

US10069572B1 Decoding light-based communication signals captured with a rolling shutter image capture device 有权
公开(公告)号：US10069572B1
公开(公告)日：2018-09-04
申请号：US15697575
申请日：2017-09-07
申请人： Christian Breuer , Barry Stout , Anant Aggarwal
发明人： Christian Breuer , Barry Stout , Anant Aggarwal
IPC分类号： H04B10/67 , H04B10/118 , H04N5/235
摘要： Methods and systems are described for sampling an LCom message and accurately decoding the entire LCom message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. In one embodiment, a curvature method is disclosed to determine LCom signal bit values from a curvature value of a running average calculation of light sensor data. In another embodiment, a signal reconstruction method is disclosed to determine LCom signal bit values from a comparison of modeled data buffers to light sensor data.

22. 发明授权

US09698908B2 Sub-sampling raster lines in rolling shutter mode for light-based communication 有权
公开(公告)号：US09698908B2
公开(公告)日：2017-07-04
申请号：US14870060
申请日：2015-09-30
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： H04B10/00 , H04B10/116 , H04B10/69 , H04B10/67
CPC分类号： H04B10/116 , H04B10/671 , H04B10/69
摘要： Light-based communication (LCom) techniques are disclosed for decoding LCom signals using a sub-raster line sampling process. In accordance with an embodiment, a system is provided that is configured to sub-sample each raster line to capture data at a much faster sampling rate, which in turn allows for longer LCom messages and faster response time. The sub-sampling of the raster lines can be carried out in a rolling shutter mode. Without such sub-sampling of the raster lines, decoding the LCom signals may be effectively limited by the raster line frequency, given that the raster line sampling rate is tied to the horizontal resolution of the camera. However, by sub-sampling the raster lines as provided herein, the sampling rate can be a combination of horizontal and vertical pixels which represents a substantial improvement over standard raster line based rolling shutter modes.

23. 发明申请

US20170170899A1 Techniques for Raster Line Alignment in Light-Based Communication 有权
公开(公告)号：US20170170899A1
公开(公告)日：2017-06-15
申请号：US15442860
申请日：2017-02-27
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： H04B10/116 , H04B10/50
CPC分类号： H04B10/116 , G01C3/08 , G01C21/206 , G01S1/70 , G01S5/163 , G01S11/12 , G06K9/34 , G06K9/4661 , G06K9/6218 , G06T7/90 , G06T2207/10004 , G06T2207/20021 , H04B10/0795 , H04B10/114 , H04B10/1149 , H04B10/501 , H04B10/502 , H04B10/516 , H04B10/5563 , H04J3/10 , H04J14/086 , H04N5/3532
摘要： Techniques are disclosed for providing proper raster line alignment of a camera or other light-sensing device of a receiver device relative to a transmitting light-based communication (LCom)-enabled luminaire to establish reliable LCom there between. In accordance with some embodiments, proper alignment can be provided automatically (e.g., by the receiver device and/or other suitable controller). In accordance with some embodiments, proper alignment can be provided by the user. In some instances in which a user is to be involved in the alignment process, the receiver device may be configured, for example, to instruct or otherwise guide the user in the process of properly aligning the receiver device relative to a given transmitting LCom-enabled luminaire.

24. 发明申请

US20170093491A1 ADAPTIVE BAUD RATE IN LIGHT-BASED COMMUNICATION 有权
公开(公告)号：US20170093491A1
公开(公告)日：2017-03-30
申请号：US14870461
申请日：2015-09-30
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： H04B10/116 , H04W4/02 , H04W28/02 , H04B10/079
CPC分类号： H04B10/116 , H04B10/07953 , H04B10/114 , H04W4/026 , H04W28/0215
摘要： Light-based communication (LCom) techniques are disclosed for adaptively adjusting the baud rate of a luminaire to optimize the LCom signal transmitted for an intended receiver device. The adaptive baud rate can be adjusted by a process that includes, for example: determining decoding parameters of the receiver device, the device including a camera for receiving LCom signals, and a display. The process further includes calculating a baud rate suitable for the receiver device based on the decoding parameters, and causing the baud rate to be set at the luminaire. The process may further include at least one of: verifying the baud rate at the receiver device; adjusting the decoding parameters of the receiver device if baud rate cannot be adjusted to meet a current configuration of decoding parameters; and prompting a user to rotate receiver device to improve orientation of the luminaire with respect to a raster direction of the camera.

25. 发明申请

US20170093490A1 SUB-SAMPLING RASTER LINES IN ROLLING SHUTTER MODE FOR LIGHT-BASED COMMUNICATION 有权
公开(公告)号：US20170093490A1
公开(公告)日：2017-03-30
申请号：US14870060
申请日：2015-09-30
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： H04B10/116 , H04B10/67 , H04B10/69
CPC分类号： H04B10/116 , H04B10/671 , H04B10/69
摘要： Light-based communication (LCom) techniques are disclosed for decoding LCom signals using a sub-raster line sampling process. In accordance with an embodiment, a system is provided that is configured to sub-sample each raster line to capture data at a much faster sampling rate, which in turn allows for longer LCom messages and faster response time. The sub-sampling of the raster lines can be carried out in a rolling shutter mode. Without such sub-sampling of the raster lines, decoding the LCom signals may be effectively limited by the raster line frequency, given that the raster line sampling rate is tied to the horizontal resolution of the camera. However, by sub-sampling the raster lines as provided herein, the sampling rate can be a combination of horizontal and vertical pixels which represents a substantial improvement over standard raster line based rolling shutter modes.

26. 发明授权

US09607393B2 Multiple panel luminaires for light-based communication 有权
公开(公告)号：US09607393B2
公开(公告)日：2017-03-28
申请号：US14575493
申请日：2014-12-18
申请人： Christian Breuer , Anant Aggarwal , Barry Stout , Bernhard Siessegger
发明人： Christian Breuer , Anant Aggarwal , Barry Stout , Bernhard Siessegger
IPC分类号： H04B10/116 , G06T7/00 , G01C3/08 , H04J3/10 , H04J14/08 , G06K9/34 , G06K9/62 , H04B10/079 , H04B10/50 , H04B10/516 , G01C21/20 , G01S1/70 , G01S5/16 , G01S11/12 , H04B10/114
CPC分类号： H04B10/116 , G01C3/08 , G01C21/206 , G01S1/70 , G01S5/163 , G01S11/12 , G06K9/34 , G06K9/4661 , G06K9/6218 , G06T7/90 , G06T2207/10004 , G06T2207/20021 , H04B10/0795 , H04B10/114 , H04B10/1149 , H04B10/501 , H04B10/502 , H04B10/516 , H04B10/5563 , H04J3/10 , H04J14/086 , H04N5/3532
摘要： Multiple panel luminaires for light-based communication (LCom) and related techniques of use are disclosed. Each luminaire panel may comprise at least one solid-state light source, where the light sources are configured to output light. The luminaire may also include at least one modulator configured to modulate the light output of the light sources to allow for emission of LCom signals. The luminaire may also include a controller configured to synchronize timing of the LCom signals. In some cases, one panel may be configured to emit an LCom signal that is the inverse or duplicate of the LCom signal emitted from another panel. Panel signal inversion may be used to maintain a relatively constant level of light output from the luminaire and/or to create a virtual fiducial to provide orientation information. Using a multiple panel luminaire to transmit data may also result in improved data transmission rates and transmission reliability.

27. 发明申请

US20050195263A1 Media pre-feed in intermittent printer 有权
标题翻译：间歇式打印机中的介质预送
公开(公告)号：US20050195263A1
公开(公告)日：2005-09-08
申请号：US10792499
申请日：2004-03-03
申请人： Michael Marra , Randall Mayo , Barry Stout
发明人： Michael Marra , Randall Mayo , Barry Stout
IPC分类号： B41J2/01
CPC分类号： B41J13/0009
摘要： A printer (1) in which a first sheet (5) to be imaged by printhead (3) is followed by a trailing media sheet. The first sheet is stopped intermittently so that the printhead can traverse the first sheet to print a partial image. The trailing media sheet is stopped behind the first sheet and is moved intermittently until it reaches or is near nip rollers (9a, 9b). Exit rollers 11a, 11b, 11c, and 11d move the first sheet out of the printer. When the exit rollers and the nip roller move forward and backward together the first sheet may be exited before the nip rollers are reversed to align the second sheet. Alternatively, the first sheet may be moved backward during alignment. The intermittent movement of the sheets may be at different times and with the trailing sheet moved less times and longer amounts than the first sheet is moved.
摘要翻译：打印机（1），其中由打印头（3）成像的第一片材（5）后面是后置介质片材。间歇地停止第一片，使得打印头可以穿过第一张片材以打印部分图像。拖尾介质片停止在第一片后面并间歇地移动直到到达或靠近夹辊（9a，9b）。出纸辊11a，11b，11c和11d将第一张纸从打印机中移出。当出口辊和夹持辊一起向前和向后移动时，可以在夹持辊反转之前退出第一片以对准第二片。或者，第一片可以在对准期间向后移动。片材的间歇运动可以在不同的时间，并且后片材移动较少的次数，并且比第一片材移动的量更长。

28. 发明授权

US10484091B2 Light-based fiducial communication 有权
公开(公告)号：US10484091B2
公开(公告)日：2019-11-19
申请号：US15636653
申请日：2017-06-29
申请人： Barry Stout , Christian Breuer , Yang Li
发明人： Barry Stout , Christian Breuer , Yang Li
IPC分类号： H04B10/116 , H04B10/114 , H04B10/079 , H04B10/50 , H04B10/516 , H04B10/556 , H04J14/08 , H04J3/10 , H05B33/08 , H05B37/02 , G01C21/20 , G01C3/08 , G01S1/70 , G01S11/12 , G01S5/16 , G06K9/34 , G06K9/46 , G06K9/62 , G06T7/90 , H04N5/353
摘要： Techniques and architecture are disclosed for navigating an area with multi-panel luminaires configured to display fiducial patterns. In an embodiment, a system includes a plurality of luminaires located in an area and configured to display one or more fiducial patterns recognizable by a mobile computing device. The luminaire includes a plurality of panels, each panel associated with one or more solid-state light sources. The luminaire also includes at least one driver configured to control the light sources to transmit light through the plurality of panels at varying light intensities to display a fiducial pattern and configured to detect errors in the display of the fiducial pattern.

29. 发明授权

US09929809B2 Reconstructing light-based communication signals captured with a rolling shutter image capture device 有权
公开(公告)号：US09929809B2
公开(公告)日：2018-03-27
申请号：US15636659
申请日：2017-06-29
申请人： Anant Aggarwal , Christian Breuer , Barry Stout
发明人： Anant Aggarwal , Christian Breuer , Barry Stout
IPC分类号： H04B10/116 , H04B10/67 , H04B10/54 , H04N5/353
CPC分类号： H04B10/116 , H04B10/54 , H04B10/67 , H04N5/3532
摘要： Methods and systems are described for sampling an LCOM message and accurately reconstructing the entire LCOM message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. These including receiving segments of an LCOM signal from at least two repetitions of the LCOM signal. The location of each segment within the LCOM signal is identified and each segment is stored in a corresponding location in a buffer configured to have a length equal to the LCOM signal. The buffer is a ring buffer, in some embodiments.

30. 发明授权

US09621266B2 Techniques for raster line alignment in light-based communication 有权
公开(公告)号：US09621266B2
公开(公告)日：2017-04-11
申请号：US14572130
申请日：2014-12-16
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： H04B10/00 , H04B10/116
CPC分类号： H04B10/116 , G01C3/08 , G01C21/206 , G01S1/70 , G01S5/163 , G01S11/12 , G06K9/34 , G06K9/4661 , G06K9/6218 , G06T7/90 , G06T2207/10004 , G06T2207/20021 , H04B10/0795 , H04B10/114 , H04B10/1149 , H04B10/501 , H04B10/502 , H04B10/516 , H04B10/5563 , H04J3/10 , H04J14/086 , H04N5/3532
摘要： Techniques are disclosed for providing proper raster line alignment of a camera or other light-sensing device of a receiver device relative to a transmitting light-based communication (LCom)-enabled luminaire to establish reliable LCom there between. In accordance with some embodiments, proper alignment can be provided automatically (e.g., by the receiver device and/or other suitable controller). In accordance with some embodiments, proper alignment can be provided by the user. In some instances in which a user is to be involved in the alignment process, the receiver device may be configured, for example, to instruct or otherwise guide the user in the process of properly aligning the receiver device relative to a given transmitting LCom-enabled luminaire.

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