公开(公告)号：US09726699B2

公开(公告)日：2017-08-08

申请号：US14896694

申请日：2014-06-12

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： Ronald Rietman ,  Ying Wang

IPC: G01R19/25 ,  H02J13/00

CPC classification number: G01R19/2513 ,  G01R19/25 ,  H02J13/00 ,  Y02E60/74 ,  Y04S10/30 ,  Y04S20/38

Abstract: The invention relates to a disaggregation apparatus (4) for being used in a multi-group electrical network (5), which comprises multiple electrical groups (1, 2, 3), each comprising one or more appliances (11, 12, 13, 21, 22, 23, 31, 32, 33). A determination unit (7) determines an electrical group (1, 2, 3) comprising an appliance, of which an operational state has been changed, based on first changes in mains voltages (V1, V2, V3) measured while the operational state change occurs, second and third changes in the mains voltages (V1, V2, V3) measured while switchable loads (1n, 2n, 3n) are switched, and the resistances (R1n, R2n, R3n) of the switchable loads (1n, 2n, 3n). Thus, a misdetection due to an operational state change of an appliance in another electrical group may be avoided and the accuracy of disaggregation may be improved in a multi-group electrical network (5).

公开(公告)号：US09609723B2

公开(公告)日：2017-03-28

申请号：US14765022

申请日：2014-01-23

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： Lorenzo Feri ,  Robert James Davies ,  Ronald Rietman ,  Willem Franke Pasveer

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B37/0236 ,  H05B37/0245

Abstract: The invention relates to a method for automatic grouping of light sources within an illumination system. The method is performed starting from a first light source of the illumination system emitting a first light signal and a first sound signal. The method includes steps of using an intensity of the first light signal as received by a second light source and an intensity of the first sound signal as received by the second light source to determine a value of a grouping function (410, 420), and assigning the first light source and the second light source to the same group of light sources when the determined value of the grouping function satisfies one or more pre-determined conditions (430, 440, 450). In this manner, a determination could be made whether or not the first and second light sources should be assigned to the same group in a manner that yields improved results over the prior art solutions.

公开(公告)号：US10027409B2

公开(公告)日：2018-07-17

申请号：US14774940

申请日：2014-03-03

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： Ronald Rietman ,  Stephanus Joseph Johannes Nijssen

IPC: H04B10/00 ,  H04B10/04 ,  H04B10/12 ,  H04B10/116 ,  H04B10/556

Abstract: The invention provides a communication system (500), a lighting system, a method of transmitting information and a computer program product. The communication system according to the invention is configured for transmitting data via visible light. The communication system comprises a signal generator (530) for generating a light driving signal (200) being a frequency shift key modulated signal comprising a sequence of signal parts (215, 225), each signal part being modulated at a first or second frequency in accordance with the data, the signal parts modulated at the first frequency having first pulses in first periods (T0) and the signal parts modulated at the second frequency having second pulses in second periods (T1). Energy of the visible light corresponding to a pulse in a respective period has center of gravity in time. The pulses in the periods are positioned so that the center of gravity is at the center of the period for reducing human-perceivable frequency components in the visible light driving signal.

公开(公告)号：US09871585B2

公开(公告)日：2018-01-16

申请号：US14368063

申请日：2012-12-12

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： Ronald Rietman ,  Robert James Davies

IPC: H04B10/116 ,  H04L29/06

CPC classification number: H04B10/116 ,  H04L69/04 ,  H04L69/22

Abstract: The invention relates to the field of IEEE 802.15.4 based networks, and in particular to methods and devices for transmitting and receiving messages in IEEE 802.15.4 based networks. The existing IEEE 802.15.4 standard is further improved and adapted to better fit the properties of a network of lighting devices. The improvements and adaptations of the existing IEEE 802.15.4 standard allow for more flexible addressing. Bits which are indicative of use of address fields and/or whether one or two frame control fields is/are present in the ordered data portions of the message to be transmitted are defined by the device transmitting the message in the IEEE 802.15.4 based network. Existing features of the existing IEEE 802.15.4 standard protocol are retained.

公开(公告)号：US09871586B2

公开(公告)日：2018-01-16

申请号：US14997966

申请日：2016-01-18

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： Frederik Jan De Bruijn ,  Ruud Vlutters ,  Lorenzo Feri ,  Tim Corneel Wilhel Schenk ,  Ronald Rietman

IPC: H04B10/116 ,  H04N5/353 ,  H05B37/02 ,  H04B10/548 ,  H04N5/225 ,  H04B10/54 ,  H04B10/69 ,  H04N5/235

CPC classification number: H04B10/116 ,  H04B10/54 ,  H04B10/548 ,  H04B10/69 ,  H04N5/225 ,  H04N5/2256 ,  H04N5/235 ,  H04N5/3532 ,  H05B37/02 ,  H05B37/0272 ,  H05B37/029

Abstract: There is provided a light detection system which is capable of determining in light embedded codes by detecting light in a scene which is illuminated by an illumination system (110) comprising one or more light sources (111,112,113) each providing a light contribution (I111, I112, I113) comprising an embedded code (ID#1, ID#2, ID#3) emitted as a temporal sequence of modulations in a characteristics of the light emitted. The light detection system comprises light detection means (220), which are arranged for acquiring at least one image of the scene, where the image is acquired a plurality of temporal shifted line instances. Each line of the acquired image comprises an instance of the temporal sequence of modulations of the first embedded code. The light detection system further comprises means (230) for determining embedded codes from the spatial pattern of modulations.

公开(公告)号：US10075236B2

公开(公告)日：2018-09-11

申请号：US15117696

申请日：2015-02-06

Applicant: PHILIPS LIGHTING HOLDING B.V.

Inventor： Constant Paul Marie Jozef Baggen ,  Ronald Rietman ,  Paul Henricus Johannes Maria Van Voorthuisen

IPC: H04B10/116 ,  H05B37/02 ,  H03M5/16 ,  H03M5/12 ,  H04L1/08

CPC classification number: H04B10/116 ,  H03M5/12 ,  H03M5/16 ,  H04L1/08 ,  H05B37/0272

Abstract: A coded light signal is embedded into visible light emitted from the light source, to be received by a rolling-shutter camera which captures frames (16) by exposing a plurality of lines (18, 24) of each frame in sequence, the camera having an exposure time with each line being exposed for the exposure time. The coded light signal is formatted according to a format whereby the coded light signal comprises at least one message and the message is repeated multiple times with a timing such that, when samples of the coded light signal are obtained from a substantially smaller number of lines (24) than exposed by the camera in each frame and the message is longer than this number of lines, a different part of the message is seen by the camera in each of a plurality of different ones said frames.