The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2025
Filed:
Nov. 30, 2023
Daikin Industries, Ltd., Osaka, JP;
Ryosuke Yamamoto, Osaka, JP;
Yohei Koyama, Osaka, JP;
Youta Katou, Osaka, JP;
Kazuaki Ando, Osaka, JP;
Taiki Kogawa, Osaka, JP;
Shin Higashiyama, Osaka, JP;
Kosuke Hotta, Osaka, JP;
Shinichi Ishizeki, Osaka, JP;
Toshiaki Kumata, Osaka, JP;
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Abstract
An indoor unit included in an air conditioner that includes an outdoor unit includes a power receiving circuit (PR), a low-frequency transmission and reception circuit as a first reception circuit, a high-frequency transmission and reception circuit as a transmission and reception circuit, and an inner-controller. The low-frequency transmission and reception circuit receives a current signal transmitted from an outdoor unit by using a current loop formed by a power line included in power supply wiring. For a first communication state in which physical connection between with the outdoor unit is recognized and a second communication state in which communication for operation of the air conditioner is performed between with the outdoor unit, the inner-controller selects use of the low-frequency transmission and reception circuit and the high-frequency transmission and reception circuit in the first communication state and the second communication state.