Title:
FREQUENCY MODULATION CIRCUIT, DRIVE CIRCUIT AND CONTROL METHOD THEREOF, AND LIGHTING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/148888
Kind Code:
A1
Abstract:
Provided are a frequency modulation circuit, a drive circuit and a control method thereof, and a lighting system. The frequency modulation circuit comprises a rectifying and filtering subcircuit, a regulator subcircuit, a control subcircuit and a switching subcircuit. The frequency modulation circuit enables an LED to emit an optical signal carrying content information, such that a user can receive the optical signal to obtain the content information.
Inventors:
YU XING (CN)
Application Number:
PCT/CN2018/110233
Publication Date:
August 08, 2019
Filing Date:
October 15, 2018
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
BOE OPTICAL SCIENCE & TECHNOLOGY CO LTD (CN)
BOE OPTICAL SCIENCE & TECHNOLOGY CO LTD (CN)
International Classes:
H04B10/116; H05B44/00
Foreign References:
CN202206605U | 2012-04-25 | |||
CN106162988A | 2016-11-23 | |||
US20160323949A1 | 2016-11-03 | |||
CN204652713U | 2015-09-16 | |||
GB191517743A | 1916-12-18 |
Other References:
See also references of EP 3749058A4
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (CN)
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