Apparatus and method for producing variable intensity of light
First Claim
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1. A lighting control arrangement for controlling user interface lighting in a portable electronic device, comprising:
- an output configured to selectively provide lighting intensity commands to a lighting controller, each of which lighting intensity commands indicates one of certain basic lighting intensity levels and a level selector configured to repeatedly change, at a frequency that is higher than an integration frequency of a human visual system, the lighting intensity command to be provided at said output.
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Abstract
A lighting control arrangement controls the user interface lighting in a portable electronic device. An output of the lighting control arrangement selectively provides lighting intensity commands to a lighting controller. Each of the lighting intensity commands indicates one of certain basic lighting intensity levels. A level selector repeatedly changes, at a frequency that is higher than an integration frequency of a human visual system, the lighting intensity command to be provided at said output.
43 Citations
27 Claims
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1. A lighting control arrangement for controlling user interface lighting in a portable electronic device, comprising:
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an output configured to selectively provide lighting intensity commands to a lighting controller, each of which lighting intensity commands indicates one of certain basic lighting intensity levels and a level selector configured to repeatedly change, at a frequency that is higher than an integration frequency of a human visual system, the lighting intensity command to be provided at said output. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A lighting control system for controlling user interface lighting in a portable electronic device, comprising:
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a lighting controller coupled to receive lighting intensity commands from a lighting control arrangement and to provide a lighting intensity signal to a light source, said lighting controller being configured to respond to each of a number of lighting intensity commands by producing a lighting intensity signal that corresponds to one of certain basic lighting intensity levels, a lighting control arrangement having an output coupled to said lighting controller, and as a part of said lighting control arrangement a level selector configured to repeatedly change, at a frequency that is higher than an integration frequency of a human visual system, the lighting intensity command to be provided at said output. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A portable electronic device, comprising:
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a user interface, at least one controllable light source configured to provide controlled lighting to said user interface, a lighting controller coupled to receive lighting intensity commands from a lighting control arrangement and to provide a lighting intensity signal to said at least one controllable light source, said lighting controller being configured to respond to each of a number of lighting intensity commands by producing a lighting intensity signal that corresponds to one of certain basic lighting intensity levels, a lighting control arrangement having an output coupled to said lighting controller, and as a part of said lighting control arrangement a level selector configured to repeatedly change, at a frequency that is higher than an integration frequency of a human visual system, the lighting intensity command to be provided at said output.
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20. A method for controlling user interface lighting in a portable electronic devices, comprising the steps of:
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producing a sequence of lighting intensity commands, each of which is a command for a lighting controller to produce one of certain basic lighting intensity levels and providing said lighting intensity commands to a lighting controller at a frequency that is higher than an integration frequency of a human visual system. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A computer program product for controlling user interface lighting in a portable electronic device, comprising:
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computer program means configured to make a programmable electronic circuit to produce a sequence of lighting intensity commands, each of which is a command for a lighting controller to produce one of certain basic lighting intensity levels and computer program means configured to make a programmable electronic device to provide said lighting intensity commands to a lighting controller at a frequency that is higher than an integration frequency of a human visual system. - View Dependent Claims (27)
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Specification