摘要:
An apparatus for distinguishing an energy band of a photon in a readout circuit that counts photons in multi-energy radiation incident onto a sensor for each energy band includes an integrator configured to accumulate an electric signal received from the sensor that has undergone photoelectric conversion from the photon; a comparator configured to compare an accumulated electric signal received from the integrator with one of a plurality of threshold values; and a signal processor configured to instruct sequential switching from one of the plurality of threshold values to another one of the plurality of threshold values according to a result of a comparison received from the comparator; and output a digital signal that distinguishes an energy band of the photon based on results received from the comparator of sequential comparisons of the accumulated electric signal with the plurality of threshold values.
摘要:
An image sensor based on a depth pixel structure is provided. The image sensor may include a pixel including a photodiode, and the photodiode may include a transfer gate to transfer, to a floating diffusion node, an electron generated by a light reflected from an object.
摘要:
Disclosed are an image sensor and a local binning method in which binning is applied selectively. For example, binning is applied to pixels having low illumination and binning is not applied to non-low illumination pixels. Information on pixels having low illumination for a first image frame may be stored and used to perform binning with respect to areas of a second image frame corresponding to low illumination pixel areas determined with respect to the first image frame.
摘要:
Provided is an analog-to-digital (A/D) converter that may be used in an image sensor and a ramp signal generator that is used in an A/D converter. The ramp signal generator may generate a ramp signal and a reference voltage signal that include noise that has same noise characteristics that are input into the ramp signal, such that the signal to noise ratio (SNR) is improved and the image quality is also improved.
摘要:
A technology of acquiring and processing light field data for images is provided. A light field data acquisition apparatus includes a modulator with an attenuation pattern to spatially modulate a 4D light field for an image, and a sensor to acquire 2D signals of the spatially modulated 4D light field. By utilizing the attenuation pattern of the modulator, more spatial data may be acquired in a low angular frequency region than that acquired in a high angular frequency region.
摘要:
A method and device for performing short range wireless communication of a mobile terminal reduces a time period of searching for terminals for connection. A short wireless communication distance can be extended by switching to/from a directional antenna and an omni-directional antenna of the mobile terminal according to a user setting. The method of performing short range wireless communication in a mobile terminal including a directional first antenna, an omni-directional second antenna, and a switch unit for switching the first antenna and the second antenna includes: activating the first antenna and searching for connectable terminals, when a short range wireless communication function is activated; and forming a communication channel with the found terminal, if a connectable terminal is found after activating the first antenna.
摘要:
An apparatus and method for allocating a channel using an auction algorithm in a wireless communication system. The method includes measuring a data rate of each channel; selecting one of the channels, when information on the channels is received from a base station, using the received information on the channels and the measured data rate; and determining a bidding price of the selected channel. Performance of the entire system can be improved by reducing complexity as well as guaranteeing an optimal value in the channel allocation.
摘要:
According to example embodiments, an image sensor includes a charge sensing amplifier configured to amplify charges sensed by a sensing unit. The charge sensing amplifier includes an input terminal, an amplification terminal, an output terminal, a first capacitor connected between the input terminal and the amplification terminal, a first switch connected between the input terminal and the amplification terminal, a second capacitor connected between the amplification terminal and the output terminal, and a second switch connected between the output terminal and a reference voltage terminal.
摘要:
A photon counting detector and a photon counting and detecting method using the same is provided. The photon counting detector includes readout circuits configured to count photons in multi-energy radiation incident to a sensor, the photons being counted with respect to each of a plurality of energy bands of the multi-energy radiation, the readout circuits respectively corresponding to pixels of a region onto which the multi-energy radiation is irradiated, each of the readout circuits being configured to count photons in a predetermined one of the energy bands, at least one of the readout circuits being configured to count photons in at least one of energy bands other than the predetermined one of the energy bands.
摘要:
A detector includes a substrate; two first regions, each first region having a linear shape, and the two first regions being separated from each other on the substrate and arranged in parallel; and a pixel region provided between the two first regions and including a plurality of pixels, the pixel region including a plurality of second regions perpendicular to the two first regions, each of the two first regions including a peripheral circuit portion, each of the plurality of second regions including a driver line, and a width of each of the plurality of second regions being equal to or less than a width of a single pixel.