Information display arrangement for camera

• US 4,279,481 A
• Filed: 05/17/1979
• Issued: 07/21/1981
• Est. Priority Date: 05/22/1978
• Status: Expired due to Term

• Current Assignee: Osawa Seimitsu Kogyo Kabushiki Kaisha
• Original Assignee: Osawa Precision Industries Limited
• Inventors: Ishibashi, Takao, Osonoi, Kenjiro
• Primary Examiner(s): Gellner, Michael L.
• Application Number:
  US06/039,994
• Time in Patent Office: 796 Days
• Field of Search: 354/53, 354/60 L, 354/289, 352/171
• US Class Current: 352/171
• CPC Class Codes: G03B 17/20 visible in viewfinder

Abstract

An information display arrangement is provided in a viewfinder of a movie camera or the like. The information display arrangement includes a first array of function indicators and a second array of quantity indicators. The function indicators are selectively actuable by a switch arrangement operated by the camera user and the quantity indicators display the quantity of the camera function selected. The information display arrangement also includes apparatus for accurately displaying battery voltage status and film supply information independent of the switch setting by the camera user.

Claims

1. An information display arrangement for a viewfinder of a camera or the like comprising:

a plurality of camera function indicators arranged along a first predetermined portion of the perimeter of the viewfinder and associated with a respective plurality of functions;

a plurality of quantity indicators arranged along a second predetermined portion of the perimeter of the viewfinder;

manually operable switch selection means for selectively actuating a respective one of said function indicators in each of a plurality of switch positions;

quantity measurement means for generating an analog voltage for each of a plurality of functions corresponding to said function indicators, said analog voltage representing a predetermined quantity representation associated with each of said functions, said manually operable switch means including means for selectively connecting to a quantity signal output the respective one of said analog voltage quantity representations corresponding to the function represented by the function indicator that is actuated by said manually operable switch means; and

means responsive to said quantity signal output controlling said plurality of quantity indicators in a predetermined manner to represent said predetermined quantity representation corresponding to said actuated function.

2. The information display arrangement of claim 1 wherein said manually operable switch selection means comprises a rotary switch including a switch layer, said switch layer including a contact position for each of said function indicators.

3. The information display arrangement of claim 2 wherein said selection connecting means of said manually operable means comprises a second switch layer of said rotary switch, said second switch layer including a plurality of contact positions, each of said contact positions being connected to a respective one of said analog voltage outputs of said quantity measurement means.

4. The information display arrangement of claim 1 wherein said controlling means includes analog-to-digital converter means for converting said analog voltages into digital representations.

5. The information display arrangement of claim 1 wherein each of said function indicators and each of said quantity indicators comprises a light emitting diode and a fiber optic element.

6. The information display arrangement of claim 5 wherein each of said function indicators further includes a function symbol representation.

7. The information display arrangement of claim 1 wherein said functions includes battery status film supply, exposure setting and sound recording level.

8. The information display arrangement of claim 1 wherein said controlling means actuates said quantity indicators in a sequential manner from one end to the other to represent the quantity of the respective functions, said quantity indications in said sequence remaining actuated once that quantity is exceeded that is represented by said actuated associated indicators to represent said quantity according to a bar graph method of quantity representation.

9. The information display arrangement of claim 1 wherein said controlling means actuates said quantity indicators according to a predetermined relationship with respect to the measured quantity, said controlling means actuating said quantity indicators in accordance with a two point indicating method whereby two adjacent indicators are actuated when the measured quantity is a value corresponding to that represented between said two adjacent quantity indicators.

10. An information display arrangement disposed about the viewfinder of a camera comprising:

a plurality of function indicators;

a plurality of quantity indicators;

manually operable switch selection means for selectively actuating a predetermined number of said camera function indicators, said predetermined number being at least two, said manually operable switch selection means actuating one of said predetermined number of function indicators in a respective switch position;

quantity measurement means for generating a signal corresponding to each of said predetermined number of functions indicators, said generated signal representing a predetermined quantity associated with each of said functions, said manually operable switch means including means for selectively connecting to a quantity output the respective one of said generated signals corresponding to the function represented by the function indicator actuated by said manually operable switch means;

means responsive to said quantity outputs of said quantity measurement means for controlling said quantity indicator to represent the predetermined quantity associated with the actuated function indicator; and

warning means for actuating said function indicators not included in said predetermined number of functions indicators in accordance with predetermined basic operating requirements for said camera whereby said respective function indicator is actuated when said corresponding camera function is not within an acceptable range for camera operation.

11. The information display of claim 10 wherein said function indicators actuated by said warning means include battery status and film supply.