摘要:
A method and apparatus for shooting and displaying a three-dimensional (3D) image are provided. Light intensities and light wavelengths of light entering a single point from various directions may be measured and the process is repeated to photographing a 3D image. Light may be emitted, from each point, to corresponding directions based on the measured light intensity and the measured light wavelength measured for each direction and thus, may display a natural 3D image.
摘要:
A synapse for a spike timing dependent (STDP) function cell includes a memory device having a variable resistance, such as a memristor, and a transistor connected to the memory device. A channel of the memory device is connected in series with a channel of the transistor.
摘要:
A spiking neuron-based working memory device is provided. The spiking neuron-based working memory device includes an input interface configured to convert input spike signals into respective burst signals having predetermined forms, and output a sequence of the burst signals, the burst signals corresponding to the input spike signals in a burst structure, and two or more memory elements (MEs) configured to sequentially store features respectively corresponding to the outputted sequence of the burst signals, each of the MEs continuously outputting spike signals respectively corresponding to the stored features.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
Disclosed is a clock recovery method and apparatus for CBR traffic in the packet switching network so as to recover the clock of the CBR traffic upon transmission by inserting a small amount of random packets to the CBR traffic stream which has arrived in a receiver. According to the present inventive concept, the CBR streams are added with the random traffic streams in the packet switching network, so that the clock of the CBR streams upon transmission can be recovered, and jitter and wander according to clock recovery can be reduced.
摘要:
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.
摘要:
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.
摘要:
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.