Display Management Methods and Apparatus
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Accused Products
Abstract
Apparatus and methods for mapping video signal parameters such as tone and color may be applied at various points in a video generation and delivery pipeline. apparatus may be configured to control mappings based on a range of inputs which may include one or more of: ambient conditions, user inputs, control information, adaptation models. Apparatus and methods may be applied to display video or other images so as to preserve a creative intent embodied in video or other image data.
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Citations
70 Claims
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1-35. -35. (canceled)
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36. A method for providing video signals for display on a target display, the method comprising:
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receiving a first input video signal having a first format wherein a video parameter is represented within a first range; receiving a second input video signal having a second format wherein the video parameter is represented within a second range different from the first range; determining a target range of the target display; generating a target value for the video parameter by extrapolating or interpolating from first and second values of the video parameter in the first and second input video signals based on the first range, the second range, and the target range; and outputting the target value to the target display. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. Apparatus for providing video signals for display, the apparatus comprising:
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first and second inputs for receiving first and second input video signals; a value extractor configured to extract corresponding first and second values from the first and second video signals; an interpolation/extrapolation unit configured to interpolate or extrapolate between the first and second values to yield a target value and to write the target value into an output video signal; an output connected to deliver the output video signal to a display. - View Dependent Claims (49, 50, 51, 52)
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53. An apparatus for pre-processing an input video signal received at a display, the apparatus comprising:
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an input for receiving the input video signal; a decoder for decoding high-quality video data; a display management unit for producing a modified video signal from high-quality video data; an auto detect block for detecting a format of the input video signal; and a multiplexer connected to receive the modified video signal and the input video signal, and configured to pass the modified video signal for further processing when the format detected by the auto detect block is a high-quality video format, and otherwise configured to pass the input video signal for further processing.
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54. A display management unit for producing a modified video signal for display on a target display, the display management unit comprising:
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at least one video input connected to receive at least one input video signal; an ambient input connected to receive information characterizing ambient conditions at the target display; a metadata input connected to receive metadata characterizing one or more aspects of a creative intent for video content carried by the at least one input video signal; a control input connected to receive control information; and a display input connected to receive information regarding the target display.
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55. Apparatus for mapping tone and/or color values in video signals, the apparatus comprising:
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an input configured to receive an input video signal; a metadata extraction unit configured to extract metadata from the input video signal; a mapping unit configured to map tone and/or color values from the input video signal to corresponding mapped values according to a mapping function; a setting unit configured to modify the mapping function in response to metadata extracted by the metadata extraction unit. - View Dependent Claims (56, 57, 58, 59, 60)
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61. Apparatus for mapping tone and/or color values in video signals, the apparatus comprising:
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an input configured to receive an input video signal; a mapping unit configured to map tone and/or color values from the input video signal to corresponding mapped values according to one or more mapping functions to yield an output video signal; a setting unit configured to change the one or more mapping functions in response to one or more input signals received at the apparatus. - View Dependent Claims (62, 63)
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64. Video processing apparatus connectable upstream from a video display, the apparatus configured to receive an input video signal and to map color and/or tone values in the input video signal to mapped values within capabilities of the display to yield an output video signal and to pass the output video signal downstream to the display, the video processing apparatus comprising a communication interface configured to receive from the display data indicative of one or more capabilities of the display and a control system configured to adjust the mapping of color and/or tone to match the capabilities of the display.
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65. Apparatus for mapping tone and/or color values in video signals, the apparatus comprising:
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an input configured to receive an input video signal; a mapping unit configured to map tone and/or color values from the input video signal to corresponding mapped values according to a mapping function to yield an output video signal comprising the mapped values; a data analysis unit configured to determine a brightness measure corresponding to the output video signal; a human visual system model configured to determine an estimated dark adaptation based on the brightness measure; and a setting unit configured to change the mapping function in response to the estimated dark-adaptation. - View Dependent Claims (66)
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67. A method for processing video data for display on a downstream display, the method comprising:
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determining a capability of the downstream display to display images for which a specified data type has values in a target range; automatically configuring a mapping to map values of the specified data-type that are outside of the target range into the target range; receiving an input video signal for which the specified data type has values outside of the target range; generating an output video signal by applying the mapping to the input video signal. - View Dependent Claims (68)
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69. Apparatus comprising any new and inventive feature, combination of features or sub-combination of features as described herein or depicted in the accompanying drawings.
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70. Methods involving any new and inventive steps, acts, combination of steps and/or acts or sub-combination of steps and/or acts as described herein.
Specification