Nokia Corporation

Nokia Technologies Oy

Kim Simelius

Antti Hallapuro

Jari Kaikkonen

Teppo Tapani Kivento

Tommi Ojala

Kimmo Kauvo

Harri Sakari Koskinen

Janne Karjalainen

Tuomas Matila

Jarkko Leino

An approximation of a DCT and a quantization are to be applied subsequently to digital data for compression of this digital data. In order to improve the transform, a predetermined transform matrix is simplified to require less operations when applied to digital data. In addition, elements of the simplified transform matrix constituting irrational numbers are approximated by rational numbers. These measures are compensated by extending a predetermined quantization to include the operations which were removed in the simplification of the predetermined transform matrix. The included operations are further adjusted to compensate for the approximation of elements of the simplified transform matrix by rational numbers. If the simplified transform matrix and the extended quantization are used as basis for implementation, a fast transform with a good resulting quality can be achieved. An approximation of an IDCT employed in decompression of compressed digital data can be simplified correspondingly.

Implementation of a transform and of a subsequent quantization

An apparatus for providing sub-file level synchronization may include a processor configured to receive an indication of a change to a portion of a file, generate a file identifier in response to the receipt of the indication, the file identifier including a sub-file identification indicative of the portion of the file, and enable synchronization of the portion of the file based on the sub-file identification. A corresponding method and computer program product are also provided.

Method, apparatus and computer program product for sub-file level synchronization

This invention relates to a method, devices and system for distributing rights to a digital content and for accessing said digital content. Further, the invention relates to a voucher structure defining rights to said digital content. Still further, the invention relates to a digital content structure adapted for arranging the distribution of rights to the digital content.

System and method for locally sharing subscription of multimedia content

A method and device for changing input states of an electronic device, the device comprising an input portion and being capable of carrying out user operations, the input states comprising a locked state, where the use of the input portion is significantly restricted, and an unlocked state, where the use of the input portion is not restricted, the locked and unlocked states being respectively enterable by a locking and unlocking input. A further input state is an intermediate unlocked state in which a limited operational use of the input portion is possible; which method comprises entering the intermediate unlocked state from the locked state, based on user input; detecting termination of a user operation in the intermediate unlocked state, and entering the locked state, in response thereto. There is also provided an input controller, a keypad and a mobile electronic device implementing these features.

Method for intermediate unlocking of a keypad on a mobile electronic device

The present invention relates to a method, device and computer program product for exchanging and processing image data within the context of playing a wireless network based game. A first object is a reference object which is provided by a first party. At least one second object is a comparison object which is provided by at least one second party and the first party and the at least one second party are involved in a comparison procedure over a communication network. Information is established which is indicative of the first object and a task is generated which relates to the first object which is available to the at least one second party. The first party receives the at least one second object from the second party. The second object is compared to the first object, with a value generated based upon the comparison.

Method and device for operating an electronic communication network game

The invention relates to an approximation of a DCT and a quantization which are to be applied subsequently to digital data for compression of this digital data. In order to improve the transform, it is proposed to simplify a predetermined transform matrix to require less operations when applied to digital data. In addition, elements of the simplified transform matrix constituting irrational numbers are approximated by rational numbers. These measures are compensated by extending a predetermined quantization to include the operations which were removed in the simplification of the predetermined transform matrix. The included operations are further adjusted to compensate for the approximation of elements of the simplified transform matrix by rational numbers. If the simplified transform matrix and the extended quantization are used as basis for implementation, a fast transform with a good resulting quality can be achieved. An approximation of an IDCT employed in decompression of compressed digital data can be simplified correspondingly.

The present invention relates to a method for activating actions. The method comprises the steps of defining an action, a portable device () related to it and, as a condition for activating the action, at least one item of position data, and determining the position of the portable device (). When the position of the portable device () corresponds to the position data defined in an action, said action is activated. In the method, the information about actions is processed in a server (), from which a data transmission connection can be set up to the device, in which the action data is transmitted from the server (), to be activated.

Growing community of inventors

Tampere, Finland

Kim Simelius