Nokia Corporation

Nokia Mobile Phones Limited

Core Wireless Licensing S.a.r.l.

Stephane Coulombe

Guido Grassel

Suresh Chitturi

Justin Ridge

Pekka Pessi

Roberto Castagno

Umesh Chandra

Fred Ware

A method (and corresponding equipment) by which a multimedia message is sent from a sending terminal () via a messaging server ()&#x2014;such as a MMS Proxy-Relay in MMS or a SIP proxy server in SIP IM&#x2014;to a receiving terminal () having limited multimedia capabilities, with the sending terminal () adapted to include a user agent () for inserting, into the message, media characteristics of the message sufficient in detail to enable the messaging server () to determine whether the message should be transcoded based on actual or assumed multimedia capabilities of the receiving terminal (), and with the messaging server () configured to read the media characteristics and decide whether the message should be transcoded based only on the inserted media characteristics and on actual or assumed multimedia capabilities of the receiving terminal (). The media characteristics are advantageously inserted into the header of the message.

Media adaptation determination for wireless terminals

A system and method for conveying content-specific characteristics related to terminal capabilities and user preferences, and adapting content for particular terminals in response to the conveyed information. A content type or other message characteristic that is recognizable by the terminal is identified, as are operational confines of the terminal by which the content type is to comply. The content type is associated with the operational confines of the terminal. The content type and associated operational confines are provided to the network server for use by the network server in delivering messages to the terminal as dictated by the operational confines.

System and method for conveying terminal capability and user preferences-dependent content characteristics for content adaptation

A method and apparatus is provided for transcoding content communicated in a network. The method features the step of transcoding the content based on permissible transcoding operations authorized by a content creator. The permissible transcoding operations include any transformation, alteration or manipulation of the content. The permissible transcoding operations include: a resolution reduction for reducing a resulting resolution of the content; an aspect ratio modification for specifying a maximum deformation that can be applied to the content when modifying its resolution; a color and bits per pixel modification for specifying if an image can be converted to gray scale or not, and minimum bits per pixel (bpp) or number of colors (or levels) that can be used; cropping for specifying a region of an original picture that must be preserved; and a quality reduction for allowing the content to be further modified by adding some distortions to an image. The content may be images, graphics, video or audio.

Method and apparatus for transcoding content with permissible operations authorized by content creator

This invention describes an adaptation system providing terminal-specific uniform resource locators (URLs) of downloadable software allowing a receiving terminal to render originally unsupported components of multimedia messages. The URLs are provided to the receiving terminal by a multimedia messaging service center (MMSC) which identifies the URLs from its database using information on the receiving terminal capabilities (i.e. based on terminal model and software release) and possibly multipurpose internet mail extension (MIME) types of originally unsupported components in multimedia messages.

System for rendering multimedia messages by providing, in a multimedia message, URL for downloadable software to receiving terminal

A method and apparatus are provided for measuring a bit rate between a client and a server. In an embodiment of the invention, a number of bits included only within one or more transaction units are measured over a time period. The time period is a sum of time durations of each of the transaction units. In an embodiment of the invention, bit rate measurements are performed on a server and in another embodiment of the invention bit rate measurements are performed on a client. Embodiments of the invention include adapting, by the server, of content to be sent to the client based on the bit rate measurements. Embodiments of the invention further include reporting the measured bit rate to the server when the bit rate measurements are performed on the client. Other aspects of the invention include sending an indication of the measured bit rate and a desired bit rate to the server when bit rate measurements are performed in the client.

Dynamic probing and reporting of bit rate information

The invention relates to a method for providing a terminal MSof a communications system with coded still image signals. In order to enable a further content adaptation for multimedia messages, it is proposed that the method comprises receiving coded video signals at a network element of said communications system, converting at least a part of said received coded video signals in said network element to coded still image signals, and delivering said coded still image signals to a terminal MSof said communication system. The computation required for said conversion can be minimized by exploiting the commonalities of video and still images compression methods that are based on the Discrete Cosine Transform scheme. Thus it is rendered possible to provide excerpts of transmitted video clips also to terminals not capable of handling at least this particular video clip. The invention equally relates to a corresponding communications system, network element and module for a network element.

Method for providing a terminal with coded still image signals, communications system, network element and module

Apparatus, and an associated method, for reducing the resolution of a digital image, such as a JPEG image. The digital image is pre-scaled by a pre-scaling factor that is selected such that a matrix multiplication is performed upon the digital image once pre-scaled, to reduce the resolution of the image. The matrix multiplication utilizes a multiplier that exhibits symmetry, thereby to reduce the number of calculations required to reduce the resolution of the image. Resolution reduction is performed, for instance, prior to communicating the digital image to a mobile station operable in a mobile communication system.

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Irving, TX, United States of America

Stephane Coulombe