Patents by Inventor Ji-Wan Song
Ji-Wan Song has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9144014Abstract: A method for operating a portable terminal so as to reduce power consumption during the support of a communication service and a portable terminal supporting the same is provided. The method includes activating a Radio Frequency (RF) communication unit, downloading a part of data of predetermined contents through the RF communication unit, buffering the downloaded part of the data in a buffer so as to output the buffered downloaded part of the data, and executing an idle time for terminating or reducing a power supply of the RF communication unit when the downloading of the part of the data of the predetermined contents is completed.Type: GrantFiled: January 23, 2014Date of Patent: September 22, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Gil Yoon Kim, Heung Ki Lee, Tae Hyung Kim, Hyun Mun Kim, Ji Wan Song, Yang Soo Lee, Seung Hwan Cho
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Publication number: 20150186426Abstract: The disclosure is related to a method of providing a search service by a service server using a plurality of wearable computing devices registered at the service server for the search service. The method may include selecting wearable computing devices located within a predetermined distance from a target search location among the registered wearable computing devices, requesting the selected wearable computing devices to collect information on a target search object through a communication network, receiving the requested information from the selected wearable computing devices through the communication network, and providing the received information to user equipment that requests searching information on the target search location and the target search object.Type: ApplicationFiled: December 30, 2014Publication date: July 2, 2015Inventors: Yeong-Hwan JEONG, Bum-Joon PARK, Hyun-Sook KIM, Ji-Wan SONG
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Patent number: 8873928Abstract: An audio and video synchronization apparatus and method in a wireless communication network are provided. The audio and video synchronization apparatus includes a receiver that receives audio frames and video frames, a playback buffer that sequentially buffers the audio frames, a detector that determines whether the audio frames are synchronized with the video frames and adjusts a playback time of the video frames based on a playback time of the audio frames if it is determined the audio frames are not synchronized with the video frames.Type: GrantFiled: December 7, 2009Date of Patent: October 28, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Hyun Lim, Yong-Gyoo Kim, Tae-Sung Park, Sung-Kee Kim, Ji-Wan Song
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Patent number: 8873590Abstract: A jitter correction method of a transmitting device, a jitter correction method of a receiving device, a transmitting device, and a receiving device are provided. The jitter correction method of the transmitting device includes: determining a time stamp of a video frame; determining a transfer time of an real-time transport protocol (RTP) packet that includes at least a part of the video frame as a payload; generating the RTP packet including the time stamp and the transfer time; and transmitting the RTP packet to a receiving device.Type: GrantFiled: September 15, 2010Date of Patent: October 28, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-kee Kim, Tae-sung Park, Gil-yoon Kim, Dae-hyung Kwon, Do-young Joung, Chun-bae Park, Ji-wan Song
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Patent number: 8806048Abstract: A method and apparatus for receiving streaming data is provided. The method includes establishing a plurality of real-time streaming protocol (RTSP) sessions for receiving the streaming data, and receiving the streaming data through the plurality of RTSP sessions.Type: GrantFiled: May 2, 2011Date of Patent: August 12, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-kee Kim, Dae-hyung Kwon, Tae-sung Park, Gil-yoon Kim, Chun-bae Park, Ji-wan Song
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Publication number: 20140140256Abstract: A method for operating a portable terminal so as to reduce power consumption during the support of a communication service and a portable terminal supporting the same is provided. The method includes activating a Radio Frequency (RF) communication unit, downloading a part of data of predetermined contents through the RF communication unit, buffering the downloaded part of the data in a buffer so as to output the buffered downloaded part of the data, and executing an idle time for terminating or reducing a power supply of the RF communication unit when the downloading of the part of the data of the predetermined contents is completed.Type: ApplicationFiled: January 23, 2014Publication date: May 22, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Gil Yoon KIM, Heung Ki LEE, Tae Hyung KIM, Hyun Mun KIM, Ji Wan SONG, Yang Soo LEE, Seung Hwan CHO
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Patent number: 8655338Abstract: A method for operating a portable terminal so as to reduce power consumption during the support of a communication service and a portable terminal supporting the same is provided. The method includes activating a Radio Frequency (RF) communication unit, downloading a part of data of predetermined contents through the RF communication unit, buffering the downloaded part of the data in a buffer so as to output the buffered downloaded part of the data, and executing an idle time for terminating or reducing a power supply of the RF communication unit when the downloading of the part of the data of the predetermined contents is completed.Type: GrantFiled: April 4, 2012Date of Patent: February 18, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Gil Yoon Kim, Heung Ki Lee, Tae Hyung Kim, Hyun Mun Kim, Ji Wan Song, Yang Soo Lee, Seung Hwan Cho
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Patent number: 8520513Abstract: A method for variably controlling a bit rate of video data through end-to-end channel status sensing in a Wireless Broadband (WiBro) network is provided. The method includes classifying wireless channel statuses of a transmission side and a reception side into normal and abnormal statuses during video data transmission; variably controlling and determining an encoding bit rate of a transmission side's encoder according to the classification result; and comparing the determined encoding bit rate with a Down Link Modulation & Coding Selection Level (DL MCS Level) which is a parameter of the reception side, so as to vary a final encoding bit rate of the transmission side.Type: GrantFiled: May 31, 2010Date of Patent: August 27, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Do-Young Joung, Tae-Sung Park, Chang-Hyun Lee, Yong-Gyoo Kim, Jae-Hoon Kwon, Jae-Sung Park, Sung-Kee Kim, Ji-Wan Song
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Patent number: 8340129Abstract: A method for compressing an extension field to be selectively included in a Real-time Transport Protocol (RTP) header is provided. It is determined whether an RTP header extension field is included in the RTP header. Information indicating a determination result is recorded. Profile information of the RTP header extension field is recorded. Total length information of the RTP header extension field is recorded. Information indicating whether changed data exists is recorded using a header extension information map.Type: GrantFiled: July 31, 2009Date of Patent: December 25, 2012Assignee: Samsung Electronics Co., LtdInventors: Sung-Kee Kim, Tae-Sung Park, Jae-Hoon Kwon, Do-Young Joung, Jae-Sung Park, Yong-Gyoo Kim, Ji-Wan Song
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Patent number: 8315386Abstract: A method for performing an encrypted voice call between a first terminal and a second terminal supporting a Voice over Internet Protocol (VoIP)-based voice call. In the method, the first and second terminals generate and store a bio key using biographical (bio) information of a user in advance before performing a voice call, the first terminal sends a request for a voice call to the second terminal and establishing a session, the first and second terminals exchange and store a bio key stored in each terminal, and the first and second terminals generate a session shared key using the exchanged bio key and starting a Secure Real-time Transport Protocol (SRTP) session, and a restored bio key by acquiring bio information from received data. User authentication is then performed by comparing the bio key with the restored bio key.Type: GrantFiled: July 7, 2009Date of Patent: November 20, 2012Assignee: Samsung Electronics Co., LTDInventors: Jae-Sung Park, Tae-Sung Park, Jae-Hoon Kwon, Do-Young Joung, Sung-Kee Kim, Yong-Gyoo Kim, Ji-Wan Song
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Publication number: 20120258699Abstract: A method for operating a portable terminal so as to reduce power consumption during the support of a communication service and a portable terminal supporting the same is provided. The method includes activating a Radio Frequency (RF) communication unit, downloading a part of data of predetermined contents through the RF communication unit, buffering the downloaded part of the data in a buffer so as to output the buffered downloaded part of the data, and executing an idle time for terminating or reducing a power supply of the RF communication unit when the downloading of the part of the data of the predetermined contents is completed.Type: ApplicationFiled: April 4, 2012Publication date: October 11, 2012Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Gil Yoon KIM, Heung Ki LEE, Tae Hyung KIM, Hyun Mun KIM, Ji Wan SONG, Yang Soo LEE, Seung Hwan CHO
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Publication number: 20120030314Abstract: A method and apparatus for receiving streaming data is provided. The method includes establishing a plurality of real-time streaming protocol (RTSP) sessions for receiving the streaming data, and receiving the streaming data through the plurality of RTSP sessions.Type: ApplicationFiled: May 2, 2011Publication date: February 2, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-kee Kim, Dae-hyung Kwon, Tae-sung Park, Gil-yoon Kim, Chun-bae Park, Ji-wan Song
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Publication number: 20110187926Abstract: A jitter correction method of a transmitting device, a jitter correction method of a receiving device, a transmitting device, and a receiving device are provided. The jitter correction method of the transmitting device includes: determining a time stamp of a video frame; determining a transfer time of an real-time transport protocol (RTP) packet that includes at least a part of the video frame as a payload; generating the RTP packet including the time stamp and the transfer time; and transmitting the RTP packet to a receiving device.Type: ApplicationFiled: September 15, 2010Publication date: August 4, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-kee KIM, Tae-sung PARK, Gil-yoon KIM, Dae-hyung KWON, Do-young JOUNG, Chun-bae PARK, Ji-wan SONG
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Publication number: 20100232292Abstract: A method for variably controlling a bit rate of video data through end-to-end channel status sensing in a Wireless Broadband (WiBro) network is provided. The method includes classifying wireless channel statuses of a transmission side and a reception side into normal and abnormal statuses during video data transmission; variably controlling and determining an encoding bit rate of a transmission side's encoder according to the classification result; and comparing the determined encoding bit rate with a Down Link Modulation & Coding Selection Level (DL MCS Level) which is a parameter of the reception side, so as to vary a final encoding bit rate of the transmission side.Type: ApplicationFiled: May 31, 2010Publication date: September 16, 2010Applicant: Samsung Electronics Co., LTD.Inventors: Do-Young Joung, Tae-Sung Park, Chang-Hyun Lee, Yong-Gyoo Kim, Jae-Hoon Kwon, Jae-Sung Park, Sung-Kee Kim, Ji-Wan Song
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Publication number: 20100142927Abstract: An audio and video synchronization apparatus and method in a wireless communication network are provided. The audio and video synchronization apparatus includes a receiver that receives audio frames and video frames, a playback buffer that sequentially buffers the audio frames, a detector that determines whether the audio frames are synchronized with the video frames and adjusts a playback time of the video frames based on a playback time of the audio frames if it is determined the audio frames are not synchronized with the video frames.Type: ApplicationFiled: December 7, 2009Publication date: June 10, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Yong-Hyun LIM, Yong-Gyoo KIM, Tae-Sung PARK, Sung-Kee KIM, Ji-Wan SONG
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Publication number: 20100027566Abstract: A method for compressing an extension field to be selectively included in a Real-time Transport Protocol (RTP) header is provided. It is determined whether an RTP header extension field is included in the RTP header. Information indicating a determination result is recorded. Profile information of the RTP header extension field is recorded. Total length information of the RTP header extension field is recorded. Information indicating whether changed data exists is recorded using a header extension information map.Type: ApplicationFiled: July 31, 2009Publication date: February 4, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sung-Kee Kim, Tae-Sung Park, Jae-Hoon Kwon, Do-Young Joung, Jae-Sung Park, Yong-Gyoo Kim, Ji-Wan Song
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Publication number: 20100008506Abstract: A method for performing an encrypted voice call between a first terminal and a second terminal supporting a Voice over Internet Protocol (VoIP)-based voice call. In the method, the first and second terminals generate and store a bio key using biographical (bio) information of a user in advance before performing a voice call, the first terminal sends a request for a voice call to the second terminal and establishing a session, the first and second terminals exchange and store a bio key stored in each terminal, and the first and second terminals generate a session shared key using the exchanged bio key and starting a Secure Real-time Transport Protocol (SRTP) session, and a restored bio key by acquiring bio information from received data. User authentication is then performed by comparing the bio key with the restored bio key.Type: ApplicationFiled: July 7, 2009Publication date: January 14, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Jae-Sung PARK, Tae-Sung Park, Jae-Hoon Kwon, Do-Young Joung, Sung-Kee Kim, Yong-Gyoo Kim, Ji-Wan Song
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Publication number: 20090153668Abstract: A system and method for video quality assessment includes utilizing codec auxiliary information related to the encoding and decoding process to enhance performance of picture quality assessment. In a video transmission system, video quality assessment can be accurately performed in real time with reduced computational load upon the client. In particular, the server performs first picture quality assessment and sends the assessment result to the client, and the client performs second picture quality assessment only when a transmission error occurs to reduce the computational load on the client.Type: ApplicationFiled: December 10, 2008Publication date: June 18, 2009Inventors: Yong Gyoo KIM, Tae Sung Park, Jae Hoon Kwon, Do Young Joung, Jae Sung Park, Sung Kee Kim, Chang Hyun Lee, Ji Wan Song
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Publication number: 20070115813Abstract: An apparatus and method for Proportional Fair (PF) scheduling for multicast services in a communication system are provided. In the PF scheduling method, a multicast PF metric is calculated over every AMC level provided by the system using the channel status information and average data rates of MSs, and an AMC level maximizing the multicast PF metric is selected as a multicast service rate.Type: ApplicationFiled: November 21, 2006Publication date: May 24, 2007Applicants: SAMSUNG ELECTRONICS CO., LTD., INDUSTRY-ACADEMIC COOPERATION FOUNDATION YONSEI UNIVERSITYInventors: Tae-In Hyon, Won-Hyoung Park, Young-Yong Kim, Kyoung-Ho Sohn, Hoon Kim, Chung-Ha Koh, Ji-Wan Song