Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Research & Industrial Cooperation Group

Hyun-surk Ryu

Fei Fei Feng

Cornelis Johannis Den Hollander

Seung-Woo Lee

Jeong-ho Park

Woo-Young Choi

June-Koo Rhee

Min-Sun Keel

Geoffrey M Garner

Young-kwang Seo

Nam-guk Kim

Gun-Hee Han

Keun-Joo Park

Long Yan

Hyun-chin Kim

Min-chul Lee

Chun-ju Youn

Myung-Sik Yoo

Kyoo-ryon Hahm

Min-ho Kang

Ji-noo Joung

Fei-fei Feng

Tai-won Um

Jun-kyun Choi

Yu-kun Kim

Dae-yun Kim

Myung-han Bae

Yeo-myung Kim

Hyun-soo Chae

Young-jun Chang

An image sensor includes a plurality of pixels and photo gate controller circuitry. Each pixel may transmit a pixel signal, corresponding to a photoelectric signal, in response to a photo gate signal in a frame. The photo gate controller circuitry may generate photo gate signals and transmit photo gate signals to the pixels. The photo gate controller circuitry includes a first delay circuit configured to transmit first delay clock signals each being delayed with respect to a reference clock signal by a certain amount of time and a second delay circuit configured to transmit second delay clock signals each being delayed with respect to the reference clock signal by a certain amount of time. The pixels are each configured to selectively receive signals, as the photo gate signals, among the delay clock signals output from the first delay circuit and the delay clock signals output from the second delay circuit.

Image sensors for measuring distance including delay circuits for transmitting separate delay clock signals

An electronic device includes a pop-up device configured to be inserted into a main body of the electronic device in an inserted state, including a gas sensor including a sensor block for sensing a gas, and configured to expose the sensor block to an outer portion of the electronic device in a pop-up state; a power supplier arranged on an outer portion of the pop-up device, configured to supply electric power to the gas sensor; and a connection controller configured to control a connection state of the pop-up device, to block supply of electric power to the gas sensor when the pop-up device is in the inserted state and to supply electric power to the gas sensor when the pop-up device is in the pop-up state, including one or more terminals formed on the pop-up device that move together with the pop-up device when the pop-up device moves.

Electronic device including gas sensor and method of operating the same

A method for efficiently allocating a bandwidth at an optical line terminal (OLT) for upstream transmission in an Ethernet passive optical network (EPON) system. An optical network unit (ONU) divides data to be transmitted into at least two groups that include a group with a constant bit rate (CBR) and a group with a variable bit rate (VBR), and requests a required bandwidth for each of the divided groups. The OLT allocates the requested bandwidth to the group with the CBR within a first bandwidth among an allocated bandwidth including the first bandwidth and a second bandwidth. The ONU transmits data using bandwidth allocated to the divided groups by the OLT.

Bandwidth allocation method and system for data transmission in EPON

An instant service method and apparatus for deficit-round-robin (DRR) data packet scheduling are provided. The method includes servicing a current flow according to packet scheduling; activating a new flow according to an input of a new data packet; servicing the new flow immediately when the current flow service is completed; and servicing a next flow when the new flow service is completed. The apparatus includes a packet memory; a flow information storage; an active list processor; a main controller; and an output part.

Instant service method for deficit-round-robin (DRR) data packet scheduling

An optical burst switching network is provided that includes an edge node transmitting burst data including a plurality of packets; and a core node optically switching received burst data or converting the received burst data into an electric signal and electrically switching the converted burst data.

Multi switching architecture and method in optical burst switching network

Residential Ethernet stream transmitting method and apparatus are provided. The residential Ethernet stream transmitting method includes transmitting a data frame comprising multi-cycle traffic information and receiving the data frame within an admission control condition based on the multi-cycle traffic information.

Method of and apparatus for transmitting residential Ethernet stream

Provided are a time synchronizing method and apparatus based on a time stamp. The time synchronizing method includes: transmitting a local time stamp based on a free-running local clock to a master node; receiving a response time stamp from the master node; calculating a delta time value based on the response time stamp; filtering the delta-time using a digital low pass filter running at the free-running local clock rate; and adjusting a local clock time based on the filtered delta time value.

Time synchronizing method and apparatus based on time stamp

A method of and an apparatus for transmitting a universal plug and play audio/video (UPnP-AV) stream is disclosed, which transmits a media stream from a media server to an media renderer, using an integrated protocol which combines an universal plug and play (UPnP) audio/video (AV) protocol and a residential Ethernet (ResE) subscription protocol. According to the method, an integrated protocol combining an UPnP-AV protocol and an Ethernet protocol can be used. Additionally, a secured quality of service (QoS) can be provided for the UPnP-AV stream.

Method of and apparatus for transmitting universal plug and play audio/video stream

An optical burst switching (OBS) system and a method using duplicate optical burst transmission is provided. In accordance with the present invention, optical bursts do not have the same priority when the duplicate optical bursts are transmitted in an OBS network so that a burst loss rate due to blocking can be reduced. Optical bursts do not have the same priority when the duplicate optical bursts are transmitted in an OBS network, so that a burst loss rate due to the blocking can be reduced. After an optical burst control packet is transmitted on a signal channel using a unidirectional reservation manner in the OBS, a problem such as optical burst loss due to the blocking can be prevented even when the optical burst is transmitted on a data channel after an offset time is elapsed without any response messages.

Optical burst switching system and method using duplicate burst transmission

A noise-resistive, burst-mode receiving apparatus including a voltage control signal generator for multiplying a frequency of a system clock signal and generating a voltage control signal having a level that corresponds to the multiplied frequency; a reset signal generator for delaying an irregular input signal in the unit of a packet, in response to the voltage control signal, performing an exclusive OR operation on the delayed and input signals, and outputting the result as a reset signal; a clock signal generator for generating a signal having a level that is changed at the middle point of each bit included in the packet as a recovered clock signal in response to the reset signal and the voltage control signal and outputting the recovered clock signal; and an output buffer for buffering the input signal and outputting the buffered signal as recovered data in response to the recovered clock signal.

Noise-resistive, burst-mode receiving apparatus and a method for recovering a clock signal and data therefrom

A wavelength converter for generating a wavelength tunable laser optical source in itself is disclosed. The wavelength converter includes a first semiconductor optical amplifier for generating an optical noise, generating and outputting a first optical source by amplifying the generated optical noise if an external current is applied, first and second distributed Bragg reflectors for reflecting only a component of a specified wavelength range among components of the optical noise and applying the reflected component to the first semiconductor optical amplifier, and a second semiconductor optical amplifier for receiving an optical source divided from the optical source reflected by and outputted from the first distributed Bragg reflector and an input data optical source, generating and outputting a second optical source by changing a phase of the divided optical source according to a digital signal from the input data optical source. The first and second optical sources outputted from the first and second semiconductor optical amplifiers are added together, and a signal of which the wavelength is converted through either a constructive interference or a destructive interference of the added first and second optical sources is outputted.

Wavelength converter for generating wavelength tunable laser optical source in itself

A burst mode receiving apparatus having an offset compensating function and a data recovery method thereof, including an intermediate value detector to detect and output an intermediate value of an input signal input from an outside source in response to a switching control signal; an amplifier to amplify and output a difference between the input signal and a reference value; an offset compensator to generate a compensation signal having a level varied corresponding to the amplified result input from the amplifier and a compensation control signal; a summing portion to add the compensation signal and the intermediate value to output the added result as the reference value to the amplifier; and a controller to generate the switching control signal and the compensation control signal corresponding to a result obtained by analyzing the amplified result input from the amplifier and a reset signal input from the outside source.

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Suwon-si, South Korea

Hyun-surk Ryu