JPS6165432U

JPS6165432U -

Info

Publication number: JPS6165432U
Application number: JP14943184U
Authority: JP
Priority date: 1984-10-02
Filing date: 1984-10-02
Publication date: 1986-05-06

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はフイルム感度情報を有するフイルムパ
トローネの外観図、第２図はＩＳＯ感度系列に対
応する各フイルム感度情報を表示するコード表、
第３図はフイルム感度自動設定機構を有するカメ
ラのパトローネ室の要部斜視図、第４図は第３図
の要部断面図、第５図はフイルム感度自動設定回
路を有するシヤツタを開閉制御する作動回路、第
６図は第５図の他の実施例、第７図は第５図で示
すフイルム感度自動設定回路の作動表、第８図は
第６図で示すフイルム感度自動設定回路の作動表
、第９図は第５図及び第６図の作動回路で制御さ
れるシヤツタ装置の実施例を示すものである。 Fig. 1 is an external view of a film cartridge having film sensitivity information, Fig. 2 is a code table displaying each film sensitivity information corresponding to the ISO sensitivity series,
Figure 3 is a perspective view of the main parts of the cartridge chamber of a camera that has an automatic film sensitivity setting mechanism, Figure 4 is a cross-sectional view of the main parts of Figure 3, and Figure 5 shows the opening and closing control of the shutter that has an automatic film sensitivity setting circuit. 6 shows another embodiment of the film sensitivity automatic setting circuit shown in FIG. 5, FIG. 7 shows an operation table of the film sensitivity automatic setting circuit shown in FIG. 5, and FIG. 8 shows the operation of the film sensitivity automatic setting circuit shown in FIG. 6. The table and FIG. 9 show an embodiment of a shutter device controlled by the operating circuits of FIGS. 5 and 6.

Claims

【実用新案登録請求の範囲】 (1) 低感度から高感度に順次配列するフイルム
感度列を２進法で２^０列乃至２^４列の５個のバツ
チによりコード化して、内蔵するフイルムの感度
に応じたコードをフイルムパトローネの所定位置
に設けた５個の電気的接点を使つて構成し、その
コードを電気的に読み取り装填されたフイルムの
感度に応じて露出制御回路に設けられたフイルム
感度設定用抵抗の値を自動的に可変し得るカメラ
に於いて、上記５個の電気的接点のうち２^２列と
２^３列及び２^４列に対応する電気的接点にそれぞ
れ当接するコード検出手段と、このコード検出手
段より得られる電気信号を判別して上記フイルム
感度系列を４つに区割すると共に、その４つの感
度区域でそれぞれ設定される感度信号を装填する
フイルムの感度に応じ選択して出力するフイルム
感度判別回路と、このフイルム感度判別回路から
の感度信号に応じ上記露出制御回路に接続する複
数のフイルム感度設定用抵抗を選択的に切換える
感度抵抗切換手段とから成るカメラのフイルム感
度自動設定回路。 (2) 上記フイルム感度系列は、ＩＳＯ感度１０
０の感度信号を出力するＩＳＯ感度２００未満の
第１感度区域帯と、ＩＳＯ感度２００の感度信号
を出力するＩＳＯ感度２００以上で４００未満の
第２感度区域帯と、ＩＳＯ感度４００の感度信号
を出力するＩＳＯ感度４００以上で８００未満の
第３感度区域帯と、ＩＳＯ感度８００の感度信号
を出力するＩＳＯ感度８００以上の４つに区割し
て成る実用新案登録請求の範囲第(1)項に記載の
カメラのフイルム感度自動設定回路。[Claims for Utility Model Registration] (1) Film sensitivity rows arranged sequentially from low sensitivity to high sensitivity are encoded in binary code using five batches of ²⁰ rows to ²⁴ rows to determine the sensitivity of the built-in film. A code corresponding to the exposure control circuit is constructed using five electrical contacts provided at predetermined positions on the film cartridge, and the code is electrically read and the film sensitivity set in the exposure control circuit is adjusted according to the sensitivity of the loaded film. In a camera capable of automatically varying the value of a setting resistor, a code detection means contacts electrical contacts corresponding to rows ²² , ^23, and ²⁴ of the five electrical contacts, respectively. Then, the electric signal obtained from this code detection means is discriminated, the film sensitivity series is divided into four, and the sensitivity signals set in each of the four sensitivity areas are selected according to the sensitivity of the film to be loaded. The film sensitivity of the camera is comprised of a film sensitivity determination circuit that outputs a film sensitivity determination circuit, and a sensitivity resistance switching means that selectively switches a plurality of film sensitivity setting resistors connected to the exposure control circuit in response to a sensitivity signal from the film sensitivity determination circuit. Automatic setting circuit. (2) The above film sensitivity series is ISO sensitivity 10.
A first sensitivity zone with an ISO sensitivity of less than 200 which outputs a sensitivity signal of 0, a second sensitivity zone with an ISO sensitivity of 200 or more but less than 400 which outputs a sensitivity signal of ISO sensitivity 200, and a sensitivity signal with an ISO sensitivity of 400. The scope of the utility model registration claim (1) is divided into four regions: a third sensitivity zone where the ISO sensitivity is 400 or more and less than 800, and an ISO sensitivity 800 or more that outputs the ISO sensitivity signal of 800. Camera film sensitivity automatic setting circuit described in .