Koninklijke Philips Corporation N.v.

Nxp B.v.

Other

Crocus Technology Inc.

Philips Intellectual Property & Standards Gmbh

Robert Jochemsen

Nicolaas Lambert

Adrianus Johannes Maria Denissen

Hong Li

Antonius Adriaan Maria Staring

Kars-Michiel Hubert Lenssen

Wilhelmus Franciscus Johannes Fontijn

Ronald Marcel Tol

Pieter Bas Ijdens

Tim Nielsen

Johannes Henricus Maria Korst

Hans Willem Van Kesteren

Johannes Antonius Van Rooij

Johannes H M Korst

Ozcan Mesut

Gerardus W T Van Der Heijden

Rudi Jozef Marie Wijnands

Marcel Lambertus Leonardus Bijsterveld

Sergei Y Shulepov

Krishnamoorthy Palanisamy

Wilhelmus F J Fontijn

Adrianus J M Denissen

The invention relates to a method of imaging an interior of a turbid medium, a device for imaging an interior of a turbid medium, and a medical image acquisition device. A turbid medium is accommodated in a receiving volume (), light from a light source is coupled into () and out of the receiving volume and detected () after which a dataset is obtained from the detected light (). The dataset is then communicated to an image reconstruction algorithm () and an image of an interior of the turbid medium is reconstructed based on the detected light (). According to the invention the dataset is changed prior to communicating the dataset to the image reconstruction algorithm into a further dataset (), with a further dataset satisfying an input assumption underlying the image reconstruction algorithm.

Method for optically imaging an interior of a turbid medium, method for reconstructing an image of an interior of a turbid medium, device for imaging an interior of a turbid medium, medical image acquisition device and computer program

In a method for providing copy-protection services on a storage medium (for instance a solid state memory module), the data are arranged in sectors to which a field (S4T) is associated, where said field contains a random value Rwhich is changed randomly when writing data to said sector. By encrypting the data stored on the medium using a key which depends critically on said random numbers, bit-by-bit copies (apart from said random numbers, which can not be deterministically changed by an application) to a second storage medium or recopies from some intermediate storage medium, can not be decrypted because the values of said random numbers will have changed, thus preventing unauthorized duplication and replay attacks.

Method and system for providing copy-protection on a storage medium and storage medium for use in such a system

Data, stored in MRAM-cells should be protected against misuse or read-out by unauthorized persons. The present invention provides an array of MRAM-cells provided with a security device for destroying data stored in the MRAM-cells when they are tampered with. This is achieved by placing a permanent magnet adjacent the MRAM-array in combination with a soft-magnetic flux-closing layer. As long as the soft-magnetic layer is present, the magnetic field lines from the permanent magnet are deviated and flow through this soft-magnetic layer. When somebody is tampering with the MRAM-array, e.g. by means of reverse engineering, and the flux-closing layer is removed, the flux is no longer deviated and affects the nearby MRAM-array, thus destroying the data stored in the MRAM-cells.

Method and device for protection of an MRAM device against tampering

A universal memory device is presented that provides adaptability to existing hardware and software environments. The memory can 'mimic' existing memory technology combining the advantages of integrating all memory capacity into one single technology and still providing the implicit protections and access characteristics known from the different existing memory technologies. The memory device comprises a memory having low-latency, rewritable, non-volatile memory cells, a profile storage unit connected with the memory and comprising access information allocated to a set of request information elements (request profile), such that the access information indicates whether an access request to said memory, the access request having the request profile, is to be allowed or rejected, and an access control unit communicating with the profile storage unit and the memory, and adapted to allow or reject an incoming access request in dependence on the access information allocated to the request profile of the access request.

Universal memory device having a profile storage unit

Data, stored in MRAM-cells () should be protected against misuse or read-out by unauthorised persons. The present invention provides an array () of MRAM-cells () provided with a security device () for destroying data stored in the MRAM-cells () when they are tampered with. This is achieved by placing a permanent magnet () adjacent the MRAM-array () in combination with a soft-magnetic flux-closing layer (). As long as the soft-magnetic layer () is present, the magnetic field lines () from the permanent magnet () are deviated and flow through this soft-magnetic layer (). When somebody is tampering with the MRAM-array (), e.g. by means of reverse engineering, and the flux-closing layer () is removed, the flux is no longer deviated and affects the nearby MRAM-array (), thus destroying the data stored in the MRAM-cells ().

Method and device for protection of an mram device against tampering

The present invention relates to a write controller for a memory with a plurality of non-volatile storage cells, a read controller for a memory with a plurality of nonvolatile storage cells, to a combined write/read controller, to a solid state device comprising a memory with a plurality of non-volatile storage cells, a programmer device for writing a binary code to a non-volatile memory, to a method for writing data comprising at least one input bit to a memory having non-volatile storage cells, and to a method for controlling the integrity of data comprising at least one input bit stored in non-volatile storage cells of a memory. The basic concept of the present invention is to extend information stored in a non-volatile memory by at least one checking bit. The checking bit is allocated to one code bit, or to each of a plurality of code bits.

Integrity control for data stored in a non-volatile memory

A method for breathing of scheduling algorithms for a storage device (). The method including: (a) computing a worst-case duration of a breathing cycle (P) for the storage device (); (b) starting a breathing cycle; (c) determining if one of the following becomes true before the end of P: (i) a number of real-time requests is at least a predetermined threshold based on a number of data streams and performance parameters of the storage device; and (ii) a number of pending requests for any single stream becomes more than one; (d) if at least one of (i) and (ii) remain true during the duration of P, starting a subsequent breathing cycle after completion of the breathing cycle; and (e) if both of (i) and (ii) are not true during the duration of P, waiting P time units from the start of the breathing cycle before starting the subsequent breathing cycle.

Methods and apparatus for improving the breathing of disk scheduling algorithms

A system () like a video on demand server has a storage medium () with a number of files () from which data can be fetched or in which data can be stored. A file contains a number of clusters () and each cluster contains a number of storage sectors () that are physically successively organized on the storage medium. When a new stream is requested, either for reading or writing, a block size () is determined for the new stream. The block size is large enough to support the rate of the stream and is chosen such that a cluster can be read with an integer number of blocks by evenly partitioning the size of the cluster into the size of the blocks reading the cluster.

System for and method of accessing blocks on a storage medium

The invention relates to a method of writing data to and reading data from a memory () by a host. By limiting processing time, time restrictions regarding the data to be processed can be met. However, this is at the expense of data integrity. By setting time limits for a group () of multiple processing assignments and dynamic allocation of time, reserved for error recovery and retries, data integrity can be improved, while time limits can still be met. Furthermore, by attaching priorities to the assignments, multiple types of data can be handled in one group of assignments. For example, assignments with real-time requirements can be put in a group with assignments with best effort requirements. In this way, more flexible planning of processing assignments is possible. The invention also relates to a system for writing data to and reading data from a memory.

Method and system for reading data from and writing data to a memory

The present invention provides a method and system for reducing fragmentation (both file fragmentation and free-space fragmentation) in digital storage devices ( ). In such a device in which a plurality of files is available for deletion the invention proposes selectively deleting the file that maximises defragmentation. The selection may optimise file and free-space defragmentation.

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Eindhoven, Netherlands

Robert Jochemsen