Hewlett-packard Development Company, L.p.

Hewlett-packard Indigo B.v.

Hp Indigo B.v.

Gidi Amir

Doron Shaked

Carl Staelin

Dror Kella

Steven J Simske

Mark Sandler

Yaron Grinwald

Mani Fischer

Ram Dagan

Ruth Bergman

Gitit Ruckenstein

David Ben Ovadia

Oren Haik

Omer Barkol

Fabio Giannetti

Marie Vans

Sagi Schein

Rodolfo Jodra

Craig Breen

Omri Shacham

Tamar Kashti

Eyal Negreanu

David Edward Staas

Michael Melamed

Alexander Spivakovsky

Leonid Vygodner

Andrey Iossifov

Avi Malki

David Savelzon

Access requests () that are to be scheduled to an information storage system () include realtime access requests and non-realtime access requests. The realtime access requests are associated with respective completion deadlines. Pending ones of the access requests () that are awaiting submission to the information storage system () are received. Outstanding ones of the access requests () that have been submitted to the information storage system () and are awaiting completion by the information storage system () are tracked. The pending access requests are submitted to the information storage system () based on rules that prioritize the submission of pending access requests such that realtime ones of the pending access requests and realtime ones of the outstanding access requests will be serviced by the information storage system () by their associated completion deadlines.

Scheduling realtime information storage system access requests

A method for compressing a digital image to be printed, the image consisting of pixels. It is determined, for blocks of pixels, whether a block contains a graphical structure that is to be maintained without loss because it is of a type that can be accurately perceived by a human observer. The block is encoded losslessly into a less voluminous format, if such a graphical structure has been found. Otherwise, the block is compressed lossily, if no such graphical structure has been found.

Image compression

A method of compressing a digital image comprises dividingthe image into cells of constant physical size regardless of resolution of the image to produce cell data for each cell which defines content of the cell and compressingthe cell data.

Compressing image data

A method of storage access scheduling for a memory device for a workload of different priority access requests including access requests having a real-time priority. The method includes characterizing the memory device including determining a balanced number (N) of concurrent access requests associated with a concurrent access maximum throughput associated with the memory device. The method also includes characterizing the workload. The method also includes receiving a real-time access request associated with an access request storage location value. The method also includes processing the real-time access request, utilizing a processor, based on the access request storage location value and the values obtained from characterizing the memory device and the workload.

Concurrent request scheduling

Automated inspection method for detecting a defect in a printed image, comprising processing a raster image, sending the raster image to a print process, printing a printed image corresponding to the raster image onto a medium, capturing a target image from at least a part of the printed image at a lower resolution than the printed image, at least in a medium moving direction, converting at least a part of the raster image to a reference image, and comparing the reference image to the target image.

Automated inspection of a printed image

Devices and methods for using an electronic device for a print job ticket. Such an electronic device may include a network interface, a display, and an input device. The network interface may receive an assignment of the electronic device to a print job from a print service provider controller, receive workflow instructions associated with the print job from the print service provider controller, and send job status information associated with the print job to the print service provider controller. The display may display a representation of the workflow instructions and a user-selectable representation of the job status information. The input device may register a user selection of the representation of the job status information.

Devices and methods for using an electronic device as a print job ticket

An image processing method () for converting an original image () into a final, pixelated image () suitable for printing on a printer arranged to print two-tone images and capable of printing partial area exposed pixels, comprises antialiasing () the original image () into an intermediate pixelated image () comprising greyscale pixels having assigned greyscale values. The method comprises the further-step, of translating () the intermediate image () into the final, pixelated image () by translating the assigned greyscale values into partial exposure values indicative of the amount of desired pixel area for a corresponding pixel or pixels in the final image.

Image processing method and apparatus

A set of screens is provided for use in printing respective color separations in a halftone color printing process. This set of screens comprises at least two clustered-dot screens and the frequency and angle parameter values of the screens is such that the lowest frequency moir&#xe9; produced by any combination of at least two frequency components, taken from the group comprising the first and second screen harmonics, for which the sum of the harmonic orders of the frequency components in the combination is less than a predetermined value, is of a sufficiently high frequency as to be substantially unperceivable to the human visual system; other moir&#xe9;s are also substantially unperceivable to the human visual system. The lowest frequency moir&#xe9; serves to reduce the visibility of color changes caused by color plane registration variations. A printing system and method employing the screen set are also provided.

Reducing the visibility of color changes caused by color plane registration variations in halftone color printing

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Ness Ziona, Israel

Gidi Amir