Remote control device for a motion picture camera and marking ring for a remote control device

Patent metadata

Field	Value
Publication number	US-11637951-B2
Application number	US-202117308292-A
Country	US
Kind code	B2
Filing date	May 5, 2021
Priority date	May 7, 2020
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A remote control device for generating setting signals for a lens setting motor of a motion picture camera comprises a base part and an operating element rotatable relative to the base part for setting control commands for the lens setting motor; a position encoder for detecting a respective rotational position of the operating element and generating corresponding position signals; an evaluation and control device that is configured to determine setting signals for the lens setting motor in dependence on the position signals in accordance with a mapping rule; and an output device for transmitting the setting signals to the motion picture camera. In this respect, the mapping rule corresponds to at least one mathematical functional relationship and the remote control device has an input device via which the mathematical functional relationship can be configured by user input. A marking ring for a remote control device has a memory in which a readable coding is stored.

First claim

The invention claimed is:

1. A remote control device for a lens setting motor of a motion picture camera, said remote control device comprising an operating unit, wherein the operating unit has
a base part,
an operating element rotatable relative to the base part about an axis of rotation for setting control commands for the lens setting motor, and
a position encoder that is configured to detect a respective rotational position of the operating element relative to the base part and to generate corresponding position signals;
wherein the remote control device has an evaluation and control device that is configured to determine setting signals for the lens setting motor in dependence on the position signals in accordance with a mapping rule;
wherein the mapping rule corresponds to at least one mathematical functional relationship,
wherein the remote control device has an input device via which the at least one mathematical functional relationship of the mapping rule can be configured by a user input, and
wherein the input device is configured to allow setting, by the user input, a relationship corresponding to a non-linear relationship between values of the position signal and associated values of the setting signal for at least one value range of the position signals or for at least one value range of the setting signals.

2. A remote control device in accordance with claim 1 , wherein the input device is configured to allow setting, by the user input, a relationship corresponding to a 1/x function between values of the position signal and associated values of the setting signal (S) for at least one value range of the position signals or for at least one value range of the setting signals.

3. A remote control device in accordance with claim 2 , wherein the user input comprises at least one of the following values:
a start value of the at least one value range of the position signals or of the at least one value range of the setting signals; or
an end value of the at least one value range of the position signals or of the at least one value range of the setting signals.

4. A remote control device in accordance with claim 1 , wherein the input device is configured to allow setting different mathematical functional relationships for different value ranges of the position signal or for different value ranges of the setting signals by the user input.

5. A remote control device in accordance with claim 1 , wherein the mapping rule corresponds to a continuous monotonic mathematical function having at least one parameter, wherein the input device is configured to allow setting the at least one parameter by the user input.

6. A remote control device in accordance with claim 1 , wherein the input device is configured to allow selecting at least one of the following mathematical functional relationships for the mapping rule by the user input: a power function, a linear function, a polynomial function, a rational function, an exponential function, and/or a logarithmic function.

7. A remote control device in accordance with claim 6 , wherein the input device is configured to also allow setting a value range of the position signals or a value range of the setting signals, for applying the selected mathematical functional relationship, by the user input.

8. A remote control device in accordance with claim 1 , wherein the input device is configured to allow changing a minimum value of the setting signal and/or a maximum value of the setting signal continuously or quasi-continuously by the user input.

9. A remote control device in accordance with claim 1 , wherein the input device is configured to allow setting a respective desired setting signal for a plurality of different rotational positions of the operating element by a respective user input, so that a plurality of pairs of position signals and desired setting signals are defined, wherein the evaluation and control device is configured to determine the mapping rule in accordance with the defined plurality of pairs of position signals and desired setting signals.

10. A remote control device in accordance with claim 1 , wherein the evaluation and control device is configured to determine the mapping rule by regression or interpolation from values and/or parameters that are input via the input device.

11. A remote control device in accordance with claim 1 , wherein the evaluation and control device is configured to determine the setting signals for the lens setting motor by calculation or by looking up in a look-up table in dependence on the position signals.

12. A remote control device in accordance with claim 1 , wherein the input device comprises at least one of the following components: the rotatable operating element; the position encoder; at least one button of the operating unit or of the motion picture camera; a display device of the operating unit or of the motion picture camera; and/or a touch-sensitive display device of the operating unit or of the motion picture camera.

13. A remote control device in accordance with claim 1 , wherein the input device comprises a radio receiver for receiving an individual mapping rule from a mobile communication device of a user.

14. A remote control device in accordance with claim 1 , wherein the remote control device comprises a marking ring that is configured to be rotationally fixedly coupled to the operating element of the operating unit and that is configured to mark the settable control commands, wherein the input device of the remote control device is configured to read a desired mapping rule from a memory of the coupled marking ring and to transmit the desired mapping rule to the evaluation and control device.

15. A remote control device in accordance with claim 14 , wherein the operating unit comprises a writing device that is configured to write a mapping rule stored in the remote control device to the memory of the coupled marking ring.

16. A remote control device in accordance with claim 1 , wherein the evaluation and control device is integrated into the operating unit; or wherein the evaluation and control device is formed separately from the operating unit and the operating unit comprises an output device that is configured to transmit the position signals of the position encoder to the evaluation and control device.

17. A remote control device in accordance with claim 1 , wherein the setting signal for the lens setting motor represents a value to be set for a focus distance, for an aperture, or for a focal length of a lens of the motion picture camera.

Assignees

• Arnold & Richter Cinetech

Inventors

• Voss Hendrik

Classifications

• G03B7/10

  a servo-motor providing energy to move the setting member · CPC title

• H04N23/53

  of electronic viewfinders, e.g. rotatable or detachable · CPC title

• H04N23/62

  Control of parameters via user interfaces · CPC title

• H04N23/695

  Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects · CPC title

• G03B3/12 Primary

  adapted for remote control · CPC title