US 2002/0118963 A1Published application

Camera system having a communication system between a camera body and a photographing lens

AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha

InventorsYukio Uenaka, Hiroyuki Takahashi, Masahiro Kawasaki

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Abstract

An interchangeable lens camera system having a camera body, a photographing lens, and a rear converter, the camera body and photographing lens communicating with each other via a first group of contacts and a second group of contacts, respectively, includes a group of relay channels via which the first group of contacts are electrically connected with the second group of contacts, in a state where the rear converter is mounted between the camera body and the photographing lens; a memory in which rear converter data is stored; and a controller which reads the rear converter data from the memory. The memory and the controller have a function to send the rear converter data to the camera body while the camera body and the photographing lens communicate with each other via the first group of contacts, the second group of contacts, and the group of relay channels.

Claims8

Dependent claims

An interchangeable lens camera system having a camera body, a photographing lens, and a rear converter which can be mounted between said camera body and said photographing lens, said camera body having a first group of contacts, said photographing lens having a second group of contacts, said camera body and said photographing lens communicating with each other via said first group of contacts and said second group of contacts with said first group of contacts being electrically connected with said second group of contacts, respectively, wherein said rear converter comprises:

a group of relay channels via which said first group of contacts of said camera body are electrically connected with said second group of contacts of said photographing lens, respectively, in a state where said rear converter is mounted between said camera body and said photographing lens;
a rear converter memory in which rear converter data on said rear converter is stored, said rear converter memory including at least one port electrically connected to corresponding at least one relay channel of said group of relay channels;
and
a rear converter controller which controls a reading operation of said rear converter data from said rear converter memory, said rear converter controller including at least one port electrically connected to corresponding at least one relay channel of said group of relay channels;
wherein said rear converter memory and said rear converter controller have a function to send said rear converter data to said camera body while said camera body and said photographing lens communicate with each other via said first group of contacts, said second group of contacts, and said group of relay channels.

2 more elements

A rear converter which can be mounted between a camera body and a photographing lens of an interchangeable lens camera system, said camera body having a first group of contacts, said photographing lens having a second group of contacts, said camera body and said photographing lens communicating with each other via said first group of contacts and said second group of contacts with said first group of contacts being electrically connected to said second group of contacts, respectively, wherein said rear converter comprises:

a group of relay channels via which said first group of contacts of said camera body are electrically connected with said second group of contacts of said photographing lens, respectively, in a state where said rear converter is mounted between said camera body and said photographing lens;
a rear converter memory in which rear converter data is stored, said rear converter memory including ports electrically connected to at least one relay channel of said group of relay channels;
and
a rear converter controller which controls a reading operation of said rear converter data from said rear converter memory, said rear converter controller including ports electrically connected to at least one relay channel of said group of relay channels;
wherein said rear converter memory and said rear converter controller have a function to send said rear converter data to said camera body while said camera body and said photographing lens communicate with each other via said first group of contacts, said second group of contacts, and said group of relay channels.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/083,618Filed 27 Feb 2002
Priority: JP 2001-54543(P)28 Feb 2001
Published: 29 Aug 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G03B 17/00
Details of cameras or camera bodies
G02B 27/646
Imaging systems using optical elements for stabilisation of the lateral and angular position of the image: compensating for small deviations, e.g.…
G03B 5/00
Adjustment of optical system relative to image or object surface other than
G03B 7/26
Control of exposure by setting shutters, diaphragms or filters, separately or conjointly: power supplies; Circuitry or arrangement to switch on…