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Method for device synchronization

A technology at equipment and equipment, applied in the direction of synchronization devices, electrical components, transmission systems, etc.

Pending Publication Date: 2021-07-23
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these systems require proper calibration and setup in order to provide correct measurement data

Method used

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  • Method for device synchronization
  • Method for device synchronization
  • Method for device synchronization

Examples

Experimental program
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Effect test

Embodiment Construction

[0027]As mentioned above, there is provided an improved method for synchronizing a first device and a second device and a corresponding system solving existing problems.

[0028] figure 1 A block diagram of a system 10 including a first device 100 and a second device 200 according to one embodiment is shown. System 10 may be, for example, a positioning and / or tracking system in the field of wireless personal care devices, such as smart hair clippers. In this case, the first device 100 may be a personal care device, and the second device 200 may be a sensor device configured to be placed at a predetermined position relative to the user. For example, the second device 200 may be a sensor frame designed to be worn near or on the user's face. The first device 100 and the second device 200 are configured to be connectable via a wireless link, as shown by the dotted double arrows in the figure. Wireless links can be established by radio frequency communication.

[0029] The firs...

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PUM

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Abstract

A method for synchronizing a first device and a second device, the first device and the second device being connectable via a wireless link. The method comprises generating (202), at the first device, a synchronization signal comprising a sequence of signals, wherein each of the signals in the sequence has a first frequency; transmitting (204) the sequence of signals from the first device to the second device; performing (206), at the second device, signal processing of the sequence of signals to determine relative phase information of each of the signals in the sequence; and synchronizing (208), based on the determined relative phase information, the first device and the second device by correcting phase offset of subsequent individual signals transmitted from the first device to the second device.

Description

technical field [0001] The present disclosure relates to a method for synchronizing a first device and a second device. The present disclosure also relates to a system comprising a first device and a second device, the devices being connectable via a wireless link and configured to perform automatic synchronization Background technique [0002] An automated hair cutting system (also known as an intelligent hair clipper system) involves the use of a position measurement system, a hair clipper with motorized length setting, a digital representation of the hairstyle indicating the length of the hair at each location relative to the subject's head, and allowing the user to Select, create and send hairstyles to the hair clipper's digital user interface. Typical positioning measurement systems used in this particular field include three-dimensional (3D) positioning and 3D orientation based on alternating current (AC) magnetic fields (also known as electromagnetic fields, EMF). T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W56/0015H04W56/0025H04W56/0035H04B5/26
Inventor C·J·赞德斯蒂格L·K·萨尔弗达A·霍尔罗普S·萨布尔杰克
Owner KONINKLJIJKE PHILIPS NV