Lens system, accessory, communication method, and program
US10495948B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2018 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Jul 25, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2206/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided are a lens system, an accessory, a communication method, and a non-transitory recording medium readable by a computer for recording a program capable of accurately specifying an accessory without providing dedicated terminals for an interchangeable lens and the accessory. The lens system is a lens system including an interchangeable lens 100 and an accessory 300, the interchangeable lens includes a lens control unit that performs bidirectional data communication with the accessory necessary for acquisition of at least identification information of the accessory before starting data communication with the camera body, and the accessory includes an accessory control unit to which a power supply terminal and an input and output terminal among a plurality of signal lines are connected, and that replies with identification information of the accessory when the accessory control unit receives a request for acquisition of the identification information of the accessory from the interchangeable lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.