Electronics and Telecommunications Research Institute

Yonsei University

Lg Life Sciences, Limited

Chang Ki Kim

Jin Woo Hong

Jeong Ju Yoo

Kwang Deok Seo

Young Ho Jeong

Ju Young Lee

Tae Jung Kim

Jae Sheung Shin

Goon Ho Joe

Byeong Cheol Kim

Bok Tae Kim

Kook Sang Hwang

Soon Min Chung

The present invention discloses a method of re-transmission of a lost MMT packet by a packet transmission apparatus. The method includes generating a media processing unit (MPU) based on a media fragment unit (MFU) and generating an MMT asset by encapsulating the MPU; generating an MMT packet based on the MPU included in the generated MMT asset; and transmitting the generated MMT packet, wherein the method further comprises adding, in a signaling message related to re-transmission of the MMT packet, delay_constrained_ARQ_flag to indicate whether or not the MMT packet transmission apparatus supports a delay-constrained automatic repeat request (ARQ) function.

Method and apparatus for re-transmitting MMT packet and method and apparatus for requesting MMT packet re-transmission

A method of transmitting a Moving Picture Experts Group (MPEG) Media Transport (MMT) signaling message for Measurement Configuration (MC) processing in an MMT sending entity. The method includes generating an MC message with header information by setting a measurement mode (measurement_mode), which indicates information on a measurement start time (measurement_start_time) of a measurement item in an MMT receiving entity, to one of: an immediate measurement start, a measurement start at a predetermined time, a measurement start based on a predetermined condition, and an immediate measurement stop; and transmitting an MMT packet including the generated MC message to an MMT receiving entity.

Apparatus and method for transmitting/receiving moving picture experts group (MPEG) media transport (MMT) signaling message for measurement configuration (MC) processing

A prediction mode determining method in scalable video coding based on a structure of multiple layers is provided. The prediction mode determining method includes: deriving a coded block pattern (CBP) value of a luma component for a 16&#xd7;16 mode of an encoding target picture; determining first candidate modes for the encoding target picture according to the derived CPB value; and determining a final prediction mode for the encoding target picture based on the determined first candidate modes. According to the present invention, encoding efficiency may be improved, and complexity may be reduced.

Fast mode determining method and apparatus in scalable video coding

A data transmission method is disclosed. A data transmission method for at least one machine type communication (MTC) device constituting an MTC group includes receiving an attach request from the MTC device; determining whether the attach request is a first attach request from the MTC group; and if it is determined that the attach request is a first attach request from the MTC group, establishing a downlink tunnel and an uplink tunnel to be used for data transmission and reception between a GW and a base station using an MTC group identity.

Data transmitting method using machine type communication group based tunneling, and mobile communication system using the same

The present invention relates to a novel process for preparing iopromide which is used as a contrast agent for X-ray, wherein 5-methoxyacetylamino-2,4,6-triiodoisophthalic acid (2,3-diacetoxypropyl)amide chloride of formula (19) and 5-methoxyacetylamino-2,4,6-triiodoisophthalic acid [(2,3-dihydroxy-N-methylpropyl)-(2,3-diacetoxypropyl)]diamide of formula (20) are introduced as intermediates, by which a bismer by-product generated during the preparation process can be removed even without an additional removal procedure and thus iopromide with high purity can be prepared in high yield.

Process for preparation of iopromide

Growing community of inventors

Daejeon, South Korea

Chang Ki Kim