公开(公告)号：US07345535B2

公开(公告)日：2008-03-18

申请号：US10432553

申请日：2002-02-04

Applicant: Youngwoo Kwon ,  Junghyun Kim ,  Seong-Jun Bae

Inventor： Youngwoo Kwon ,  Junghyun Kim ,  Seong-Jun Bae

IPC: H03F3/68

CPC classification number: H03F1/0233 ,  H03F1/02 ,  H03F1/0205 ,  H03F1/0288 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/198 ,  H03F2200/423 ,  H03F2200/543 ,  H04B2001/045

Abstract: The present invention relates to a power amplification circuit of a mobile device for improving the efficiency and the linearity properties of the power amplifier. In one embodiment, the power amplifier improves these properties by controlling the input voltage of the supplemental amplifier so that the power amplifier operates as the Doherty mode in the low output power mode depending on the magnitude of the output power from the output unit and so that the input voltage of the supplemental amplifier may be increased up to satisfy the non-linear operational requirements of a power amplifier in the high output power mode. Moreover, because only the input voltage of the supplemental amplifier is controlled, the power amplifier can be implemented in a simple manner. Thus, the size of the power amplifier becomes small, which in turn reduces the cost of the power amplifier, among other things.

Abstract translation: 本发明涉及用于提高功率放大器的效率和线性特性的移动设备的功率放大电路。 在一个实施例中，功率放大器通过控制补充放大器的输入电压来改善这些特性，使得功率放大器根据来自输出单元的输出功率的幅度在低输出功率模式中作为Doherty模式工作，并且因此 可以增加补充放大器的输入电压，以满足高输出功率模式下的功率放大器的非线性操作要求。 此外，由于只有辅助放大器的输入电压被控制，功率放大器可以以简单的方式实现。 因此，功率放大器的尺寸变小，这又降低了功率放大器的成本。

公开(公告)号：US20130282871A1

公开(公告)日：2013-10-24

申请号：US13880941

申请日：2011-10-20

Applicant: Soon Heung Jung ,  Kwang Deok Seo ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Sang Woo Shim ,  Truong Cong Thang ,  Sang Taick Park ,  Won Ryu

Inventor： Soon Heung Jung ,  Kwang Deok Seo ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Sang Woo Shim ,  Truong Cong Thang ,  Sang Taick Park ,  Won Ryu

IPC: H04L29/06

CPC classification number: H04L65/60 ,  H04L1/0042 ,  H04L29/06027 ,  H04L47/19 ,  H04L47/28 ,  H04L65/604 ,  H04L65/605 ,  H04L65/607 ,  H04L65/80 ,  H04L69/163 ,  H04N21/4302

Abstract: Provided is an apparatus and method for transmitting and receiving a streaming service. An inter-arrival jitter may correspond to a delay variation in arrival time between TCP packets arriving at an apparatus for receiving the streaming service. The apparatus for receiving the streaming service may determine a de-jitter buffering time to absorb a network jitter before TS packets in a TCP packet is input to a T-STD buffer model. Based on the de-jitter buffering time, an initial playout delay lime at the apparatus for receiving the streaming service may be determined.

Abstract translation: 提供了一种用于发送和接收流服务的装置和方法。 到达之间抖动可以对应于到达用于接收流服务的装置的TCP分组之间的到达时间的延迟变化。 用于接收流服务的装置可以确定在TCP分组中的TS分组被输入到T-STD缓冲器模型之前吸收网络抖动的去抖动缓冲时间。 基于去抖动缓冲时间，可以确定用于接收流服务的设备的初始播出延迟灰度。

公开(公告)号：US20130212291A1

公开(公告)日：2013-08-15

申请号：US13811379

申请日：2011-07-20

Applicant: Jin Young Lee ,  Jae Gon Kim ,  Euy Doc Jang ,  Truong Cong Thang ,  Soon Heung Jung ,  Seong Jun Bae ,  Sang Taick Park ,  Won Ryu ,  Jung Won Kang

Inventor： Jin Young Lee ,  Jae Gon Kim ,  Euy Doc Jang ,  Truong Cong Thang ,  Soon Heung Jung ,  Seong Jun Bae ,  Sang Taick Park ,  Won Ryu ,  Jung Won Kang

IPC: H04L29/06

CPC classification number: H04L65/607 ,  H04N21/234327 ,  H04N21/23605

Abstract: A method and apparatus for inserting scalability and view information into a Moving Picture Experts Group-2 (MPEG-2) Transport Stream (TS) header are provided. When a scalable video or multi-view video is transmitted using an MPEG-2 system, scalability information or view information regarding the scalable video or multi-view video in a payload in a TS level may be used. Using the scalability information or view information, the TS-packetized scalable video or multi-view video may be efficiently adapted to various terminal performances, various network characteristics, a specific user preference, and the like.

Abstract translation: 提供了一种用于将可扩展性和视图信息插入到运动图像专家组2（MPEG-2）传输流（TS）头）中的方法和装置。 当使用MPEG-2系统发送可缩放视频或多视图视频时，可以使用关于TS级别的有效载荷中的可伸缩视频或多视图视频的可扩展性信息或视图信息。 使用可扩展性信息或视图信息，TS分组化的可伸缩视频或多视图视频可以有效地适应于各种终端性能，各种网络特性，特定用户偏好等。

公开(公告)号：US20130185398A1

公开(公告)日：2013-07-18

申请号：US13824995

申请日：2011-10-06

Applicant: Truong Cong Thang ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Soon Heung Jung ,  Sang Taick Park ,  Won Ryu ,  Jae Gon Kim

Inventor： Truong Cong Thang ,  Jin Young Lee ,  Seong Jun Bae ,  Jung Won Kang ,  Soon Heung Jung ,  Sang Taick Park ,  Won Ryu ,  Jae Gon Kim

IPC: H04L29/06

CPC classification number: H04L65/60 ,  G06Q90/00 ,  H04L65/4069 ,  H04L65/4084 ,  H04L65/4092 ,  H04L65/80 ,  H04L67/02 ,  H04N21/23439 ,  H04N21/2358 ,  H04N21/43 ,  H04N21/6125 ,  H04N21/84 ,  H04N21/845 ,  H04N21/8541

Abstract: A method and apparatus for an adaptive Hypertext Transfer Protocol (HTTP) streaming service using metadata of media content are provided. The media content may include a sequence of one or more periods. The metadata may include a start time attribute and/or a duration attribute of each of the periods. The metadata may determine a start time of each of the periods, and a start time of each of segments included in each of the periods. A terminal may access segments included in each of the periods, may decode and render data of media content included in the segments, and may play back the media content.

Abstract translation: 提供了使用媒体内容的元数据的适应性超文本传输​​协议（HTTP）流传输服务的方法和装置。 媒体内容可以包括一个或多个周期的序列。 元数据可以包括每个周期的开始时间属性和/或持续时间属性。 元数据可以确定每个周期的开始时间和每个周期中包括的每个段的开始时间。 终端可以访问包括在每个周期中的段，可以解码和呈现包括在段中的媒体内容的数据，并且可以播放媒体内容。

公开(公告)号：US20130039431A1

公开(公告)日：2013-02-14

申请号：US13572872

申请日：2012-08-13

Applicant: Seong-Jun BAE

Inventor： Seong-Jun BAE

IPC: G06F1/26

CPC classification number: G06F1/3206 ,  G06F1/3212 ,  G06F1/3287 ,  G06F1/3293 ,  H04W52/0254 ,  H04W52/0267 ,  Y02D10/122 ,  Y02D10/171 ,  Y02D10/174 ,  Y02D70/00

Abstract: A power-scalable encoding/decoding apparatus and method. The method enables a media encoder/decoder to control, in real time, the power necessary for encoding or decoding process. Accordingly, a user or a system can choose the level of power consumption in accordance with the use environment of the encoder/decoder or the need of applications.

Abstract translation: 一种功率可扩展的编码/解码装置和方法。 该方法使得媒体编码器/解码器能够实时地控制编码或解码过程所需的功率。 因此，用户或系统可以根据编码器/解码器的使用环境或应用的需要来选择功耗水平。

公开(公告)号：US20120144443A1

公开(公告)日：2012-06-07

申请号：US13252758

申请日：2011-10-04

Applicant: Seong Jun BAE ,  Jung Won KANG ,  Jeong Yeon LIM ,  Jin Han SONG

Inventor： Seong Jun BAE ,  Jung Won KANG ,  Jeong Yeon LIM ,  Jin Han SONG

IPC: H04N21/27

CPC classification number: H04N21/2187 ,  H04N21/23406 ,  H04N21/234327

Abstract: A system and method for performing source buffering to transmit a real-time encoded scalable video to multiple transmission groups are provided. A streaming system for providing a scalable video bitstream for each multicast group may include an encoder source buffer to receive a scalable video bitstream and to store the received scalable video bitstream, and a plurality of subgroup transmitters, each to receive data of different layers in the stored scalable video bitstream from the encoder source buffer, to packetize the received data, and to transmit the packetized data to a terminal.

Abstract translation: 提供了一种用于执行源缓冲以将实时编码的可缩放视频发送到多个传输组的系统和方法。 用于为每个多播组提供可分级视频比特流的流系统可以包括用于接收可分级视频比特流并存储接收的可分级视频比特流的编码器源缓冲器，以及多个子组发射机，每个子组发射机用于接收不同层的数据， 从编码器源缓冲器存储可分级视频比特流，对接收到的数据进行分组，并将分组化数据发送到终端。

公开(公告)号：US20120014396A1

公开(公告)日：2012-01-19

申请号：US13181705

申请日：2011-07-13

Applicant: Seong-Jun BAE

Inventor： Seong-Jun BAE

IPC: H04J3/24

CPC classification number: H04J3/247 ,  H04L1/1887 ,  H04L12/4633 ,  H04N21/2362 ,  H04N21/2368

Abstract: A method for transmitting a main packet stream generated by multiplexing a plurality of substreams, using a single transmission channel, includes packeting each of the plurality of substreams and generating substream packets; allocating substream sequence information to the substream packets according to a sequence in which the substream packets are generated; allocating main packet stream sequence information to the substream packets according to a sequence in which the substream packets are inputted; and multiplexing inputted substream packets and generating the main packet stream.

Abstract translation: 一种用于发送通过使用单个传输信道复用多个子流而产生的主分组流的方法，包括：对多个子流中的每一个进行打包并生成子流分组; 根据生成子流分组的顺序，将子流序列信息分配给子流分组; 根据输入子流分组的顺序将主分组流序列信息分配给子流分组; 并复用输入的子流分组并生成主分组流。