Ricoh Company, Ltd.

Mersive Technologies, Inc.

Vincent William Ferreri

Walter F Kailey

Larry Mason Ernst

John Thomas Varga

Mikel J Stanich

Nikita Gurudath

Christopher O Jaynes

Michael Tolliver

Brandon Barron

Colleen Yerkes

Marcus William Robert Birney

Robert Balgley

Vincent Keller

Joshua Schrader

Claudiu Gabriel Cebuc

Kirk Roerig

Mikel John Stanich

Systems and methods determine occupancy of a mobile device in a room based on one or more wireless signals measured by the mobile device. The mobile device receives and processes one or more wireless signals detectable in the room to generate a feature vector that is inputted to a classifier. The wireless signals may originate either in the room or out of the room. The feature vector contains wireless-signal characteristics measured by the mobile device (e.g., time-averaged power, Fourier coefficients) that are essentially unique to a room. The classifier, which may be an artificial neural network, predicts the occupancy of the mobile device in the room from the feature vector. Alternatively, the location of the mobile device in the room may be verified, wherein the feature vector may form a training example to train the classifier.

Systems and methods to determine room occupancy

Systems and methods use a mobile device to position an annotation of displayed content on a shared display coupled with a host device. Sensor data, such as gyroscope and accelerometer data, from the mobile device may be transmitted to the host device and used to generate the annotation. The sensor data may be preprocessed to smooth and fit the data to a parametric curve or shape prior to or after display on the shared display. The user of the mobile device may interact with the mobile device to further start and stop the annotation, as well as denote to animate the annotation.

System and method of annotation of a shared display using a mobile device

Systems and methods are provided for adaptive ink flushing of a printer. One embodiment is an apparatus that includes an adaptive ink flushing controller configured to obtain nozzle firing data for a nozzle of a printhead, to analyze the nozzle firing data to determine an inactive firing span of the nozzle, and, in response to determining that the inactive firing span of the nozzle exceeds a threshold, to transmit a firing instruction for ejecting ink.

Adaptive ink flushing of a printer

A system is disclosed. The system at least one physical memory device to store ink estimation logic and one or more processors coupled with the at least one physical memory device, to execute the ink estimation logic to receive a histogram for each of a plurality of color planes, receive one or more printer system settings and generate estimated ink usage data for each of the plurality of color planes based on the histograms and the one or more printer system settings.

Ink estimation mechanism

A system is disclosed. The system at least one physical memory device to store ink estimation logic and one or more processors coupled with the at least one physical memory device, to execute the ink estimation logic to receive one or more gray level histograms, receive one or more halftone designs and generate estimated ink usage data for each of one or more color planes based on the gray level histograms and the halftone designs, wherein each gray level histogram corresponds to one of the one or more color planes, and each halftone design corresponds to one of the one or more color planes.

A printing system is disclosed. The printing system includes a color management unit including one or more color caches to store input colors and corresponding output colors and a color engine (CE) to receive the input colors and perform Force-X transformations to map an input color into an output color based on a pre-defined color parameter.

Mechanism to perform force color parameter transformations

A system is disclosed. The system at least one physical memory device to store ink deposition curve compute logic and one or more processors coupled with the at least one physical memory device, to execute the ink deposition curve compute logic to receive a histogram for each of a plurality of color planes, receive ink measurement data for each of the plurality of color planes, compute ink deposition curve data for each of the plurality of color planes based on the histograms and the ink measurement data and transmit the ink deposition curve data.

Ink deposition curve computation mechanism

A printing system is disclosed. The printing system includes a color management unit including optimization logic to generate a multi-dimensional color management lookup table derived from an input color to output color mapping, wherein the multi-dimensional color management lookup table has a non-uniform spacing of grid points specifying a correspondence between each of a plurality of input color space dimensions and output color space dimensions, and a color engine to receive an input color in an input color space, perform a multi-dimensional interpolation via the multi-dimensional color management lookup table to map the input color to an output color in an output color space; and return the output color.

Optimizing number of grid points in multi-dimensional color lookup table

A printing system is disclosed. The printing system includes a print controller including a color cache to store input colors and corresponding output colors for each of a plurality of object types and a color engine (CE) to receive an input color and an object type associated with the input color and perform a lookup of the color cache to determine whether the color cache includes the input color and a corresponding output color, wherein the CE performs the lookup of the color cache via forward indexing and backwards indexing.

Multi-object color caching mechanism

A printing system is disclosed. The printing system includes a color management unit including one or more color caches to store input colors and corresponding output colors and a color engine (CE) to receive input colors and perform Force-K transformations to map near black input colors into pure black output colors by dynamically identifying the near black input colors based on chroma values and effective output values.

Mechanism to perform force black color transformation

A printing system is disclosed. The printing system includes a color management unit having a common color engine (CCE) to map input colors matching one of more criteria into output colors having a single color component to generate Preserve-X colors and a color cache to store the Preserve-X colors. The Preserve-X colors include the corresponding pairs of input colors and output colors.

Mechanism to perform force-X color management mapping

One embodiment comprises a system that stores a pre-defined color conversion table and a hash table. The system receives user-defined color conversions for a print job, stores them in first locations in the hash table, and marks the first locations as persistent. The system processes the print job utilizing the color conversion table to convert colors in the print job to the output color space, and responsive to encountering colors in the print job that do not have color conversions in the color conversion table, interpolates between color conversions in the color conversion table to generate new color conversions, stores the new color conversions in second locations in the hash table, and marks the second locations as non-persistent. The system determines that the hash table is to be re-initialized, allows reuse of the second locations in the hash table, and prevents reuse of the first locations in the hash table.

Color hash table reuse for print job processing

Embodiments described herein provide for the reuse of some locations in a hash table of color conversions during processing of a print job, while preventing the reuse of other locations. If a determination is made that the hash table is to be re-initialized, then the locations in the hash table that are marked as non-persistent are marked as saved to allow them to be reused, while the locations in the hash table that are marked as persistent are prevented from being reused. During processing of the print job subsequent to re-initialization of the hash table, if a color in the print job does not have a color conversion, then a location in the hash table is identified that is marked as saved. If the location stores the color conversion for the color, then the non-persistent mark is restored for the location to bypass performing a color conversion for the color.

Growing community of inventors

Federal Heights, CO, United States of America

Vincent William Ferreri