59 results about "Serial scanning" patented technology

A method and apparatus of identifying a plurality of devices connected along a common communications link is disclosed. A control station scans the devices by sending a succession of interrogation signals along the communication link, the interrogation signals comprising a representation of the identification numbers of the devices. A first scan is carried out with interrogation signals identifying a first level of the range of identification numbers, and each device is programmed to generate, and to send to the control station, a response signal that comprises its complete identification number and a checksum, upon receipt of a scan signal applicable thereto. Successive scans are carried out by the control station, adding the next higher level of the range of identification numbers, wherein upon completion of a scan that does not give rise to invalid responses, the previously-paused scan is resumed.

To enable a user to rapidly scan to a desired frame of a video, multiple recordings of the video are provided, each at progressively better resolution. When the user is scanning for a frame, the lowest resolution recording is used to provide the display; when the user arrives at a desired frame, the higher resolution recordings are used. A subsequent user selection of a different frame causes the display of the higher resolution images to be interrupted, and the lowest resolution recording is used to provide an image corresponding to the different frame. The lesser resolution recordings may include a reduction in either spatial or temporal resolution, or both, and may include ‘motion blur’ that provides a visually ‘smoother’ continuous scan. Each higher resolution frame replaces the lower resolution frame that is displayed while waiting for the higher resolution frame to be downloaded.

A data compression system is provided in accordance with the present invention. The system includes a scanning component which scans at least a portion of a transformed image. The scan is performed substantially in a horizontal direction on a first section of the portion and in a vertical direction on a second section of the portion to enable improved data compression of the transformed image. The horizontal and vertical scan directions are performed via a contiguous scan of the respective sections to further enable improved data compression of the transformed image.

An optical instrument including at least a first and second wavelength swept vertical cavity laser (VCL) sources. The wavelength sweeping ranges spanned by the first and second VCL sources may differwith a region of spectral overlap. The first and second VCL sources may be operable under different modes of operation, wherein the modes of operation differ in at least one of: sweep repetition rate,sweep wavelength range, sweep center wavelength, and sweep trajectory. A VCL source may also exhibit sweep-to-sweep variation. Apparatus and methods are described for aligning sample signal data fromthe first VCL and sample signal data from the second VCL to generate output digital data. The output digital data is aligned with respect to at least one of: wavelength, wavenumber, and interferometric phase. The apparatus and methods can also be used to phase stabilize successive sweeps from the same VCL source or wavelength swept source.

The invention discloses a novel QR code which comprises a QR code series formed plurality sections of QR codes, wherein each section of the QR code is provided with a flag bit and correspondingly stored with one section of data, and the sections of data jointly form complete original data. The sections of QR codes are arranged randomly to form the QR code series, which are played in circulating way, and scanned continuously. Each section of QR code when scanned is parsed immediately into QR code data, and whether scanning of all QR code is completed is determined. When all the sections of the QR codes are scanned, the scanning results of all sections of the QR codes are assembled to generate complete data. Compared with the prior art the novel QR code and the generation and code scanning method thereof achieve the effect of accurately and completely reading out big data bulk without missing any data in about three to four seconds.

The invention provides a boundary scan test controller for a mixed signal circuit. The boundary scan test controller comprises a host module, as well as a counting module, a command module, a test clock frequency divider, a general register set, an analog register set, a serial scanning module and an analog instrument platform control module which are connected with the host module through read-write data buses, and is equipped with a processor interface and test bus interfaces, wherein the analog instrument platform control module is equipped with a mixed signal control interface connected with both a program-controlled signal source generating a voltage/current excitation signal and a voltage collector collecting a response signal of a tested circuit; the processor interface of the host module is connected with a microprocessor; the serial scanning module is equipped with two sets of test bus interfaces; and the mixed signal control interface is an SPI (Serial Peripheral Interface) and is connected with the analog instrument platform. The controller provided by the invention facilitates assembling a boundary scan test system of the mixed signal circuit for performing digital/analog boundary scan tests, and solves the problem of synchronization of digital vector application, analog test excitation application and voltage acquisition.

This invention discloses a scanning mechanism of an ion implanter. The mechanism is a PR-PRR type parallel mechanism with two subchains and two DOFs, driving the wafer holder to scan when the first subchain and the second subchain are translated in the same direction at the same speed and adjusting the rotational angle of the wafer holder when the first moving link (30) and the second moving link (32) in the first subchain and the second subchain have different translation amounts in the same direction or opposite directions. The driving motor for the scanning mechanism is provided outside the implant chamber. The invention also solves problems like low rigidity and large accumulation errors of existing serial scanning mechanisms and the effect of the electromagnetic field of the motor within the ion implant chamber on the trajectory of the ion beam.

Methods and apparatus for dynamically (AC) testing a target circuit within a main circuit include: providing respective sets of input latches from among a plurality of latches of the main circuit; reconfiguring connections of at least some of the input latches from normal connections within the main circuit such that each set of input latches is connected in series and directs an input bit stream from an associated source node into an associated input node of the target circuit; scanning a plurality of sets of input bits into the respective sets of input latches such that each latch of each set of input latches contains a respective bit of an associated one of the sets of input bits; and scanning each of the sets of input bits serially into the respective input nodes of the target circuit at a sufficiently high frequency to dynamically test the target circuit.

In a printing apparatus which prints by serial scanning, a control command and image data formed from a plurality of rasters as a unit that are received from a connected host apparatus are stored in a reception buffer. Whether to perform marginless printing of printing on the entire surface of a printing medium is determined on the basis of information on the size of image data and information on the size of the printing medium that are contained in the control command. When marginless printing is performed, the amount of unnecessary image data is calculated by using a plurality of rasters as a unit on the basis of the length of the printing medium in the conveyance direction and the length of the image data in the conveyance direction. The printing start position of the printing medium in the conveyance direction is aligned by a distance corresponding to the number of rasters as a remainder of the calculation. Accordingly, the start position of marginless printing on the printing medium in the conveyance direction can be accurately controlled when marginless printing is executed.

The invention provides a novel intelligent subway gate passing method. The method comprises the steps that a client of a mobile terminal receives a user voucher and account information sent by a server and generates a dynamically refreshed two-dimensional code; a gate receives two-dimensional code information sent by the client of the mobile terminal, wherein the two-dimensional code information comprises user account and travel information; the gate continuously scans the dynamic two-dimensional code information, and sends the two-dimensional code information extracted after scanning to the networking cloud for verification when any two continuous two-dimensional code information groups are acquired within one second and the two-dimensional code information groups pass direct verification locally; and the gate is opened for the user to pass after the two-dimensional code information passes verification performed by the networking cloud. According to the method, passengers need not to buy a ticket, and the fee is automatically deducted from the account balance or automatically paid through a signed small-sum password-free payment protocol after leaving the station and terminating the travel, thereby greatly saving the operating time and the queuing time of the passengers.

An emulator for emulating operations of data processing circuitry normally connected to and cooperable with a peripheral circuit includes serial scanning circuitry connectable to the peripheral circuit. The serial scanning circuitry provides to and receives from the peripheral circuit signals which would normally be provided and received by the data processing circuitry. The serial scanning circuitry is connectable to an emulation controller for transferring serial data between the emulation controller and the emulator. The serial scanning circuitry includes a first state machine having plural states controlling the transfer of serial data. The emulator further includes control circuitry connected to the serial scanning circuitry and connectable to the emulation controller. The control circuitry, when connected to the emulation controller, effects the providing and receiving of signals and the transferring of serial data between the emulation controller and the emulator continuously without interruption while the first state machine remains in one state.

The invention discloses a three-dimensional reconstruction system and method. The system comprises a main camera. The main camera comprises a detachable camera module and a fixed camera device which are used for collecting large-range images together, and the detachable camera module can be separated from the main camera and can independently collect detail images. The detachable camera module comprises a main processing unit. The main processing unit is used for acquiring a large-range image and carrying out three-dimensional reconstruction according to the large-range image and the detail image. The overall space is required to be roughly reconstructed; the detachable camera module of the main camera and the fixed camera device can be used for jointly acquiring a large-range image. Whena small object needs to be continuously scanned, the detachable camera module can be directly separated from the main camera for use, the detachable camera module is independently used for collectingdetail images, and finally the main processing unit in the detachable camera module carries out three-dimensional reconstruction according to the large-range images and the detail images, so that after normal indoor scanning, the detachable camera module is used for scanning details, and vulnerabilities are filled.

The invention discloses a wireless data transmission system suitable for a barcode scanning reader. The wireless data transmission system is characterized by comprising a barcode acquisition and wireless transmitting module with a serial port, and a wireless barcode receiving module with a USB (Universal Serial Bus) interface. The barcode acquisition and wireless transmitting module is connected with a decoding module of the barcode scanning reader through the serial port so as to acquire barcode data and transmit the barcode data to the remote wireless barcode receiving module in a wireless way; the wireless barcode receiving module receives the barcode data, and uploads the data to a PC (Personal Computer) through the USB interface. The wireless data transmission system not only supports a regular mode of the barcode scanning reader, but also supports a continuous scanning mode. The wireless receiving/transmitting modules in the system can be matched arbitrarily to form a barcode data receiving/transmitting network. The PC connected with the system can view all the barcode information in the system without installing any driver software. The wireless data transmission system can be used for greatly improving the efficiency of wireless transmission of the barcode data.

The invention relates to a large-area exposure method for maskless scanning photoetching, which is used for improving an image preprocessing speed in large-area photoetching and particularly in batch photoetching. According to the large-area exposure method disclosed by the invention, N groups of DMDs (Digital Micro-Mirrors) (each group comprises m DMDs); in a preprocessing stage of an exposed image, only one copy of exposure frame data in N similar regions in the image is generated; correspondingly, the N groups of DMDs are regulated to corresponding starting points of the N regions, then relative positions of the DMDs and the starting points are kept unchanged, and the same copy of exposure frame data is continuously scanned and exposed. According to the large-area exposure method disclosed by the invention, the image preprocessing speed can be greatly improved, and a redundancy of the generated exposure frame data is reduced, so that integral efficiency of a maskless scanning photoetching system is improved.

The present invention relates to photoetching technique field, concretely is an integrative direct write photolithography method. The method includes determining the target exposal graph, direct write by steps and continuous scan etch three steps; improving the exposal efficiency by using projecting lens with different multiplying power; and gapless jointing the graphs generated by the projecting lens with changed multiplying power by using co-axial optical position detection system. The method of the invention adopts a mixing method of direct scan and minification typesetting, generates smooth graph contour outline and improves efficiency of exposal.

The invention belongs to the field of product identification, and provides a two-dimension code scanning system and a scanning and calibration method and system thereof. According to the method and system, a spell, instantaneously starting after the current counting carried out by a two-dimension code scanner and a photoelectric sensor in the two-dimension code scanning system is finished, is selected to serve as an adjustable time difference parameter, and therefore a computer can complete calibration between the end of the current counting carried out by the two-dimension code scanner and the photoelectric sensor and the end of next initial counting by adjusting the time difference parameter. By means of the method and system, when on-site environmental factors change, specification of motion rules when two-dimension codes are continuously scanned is carried out, the time difference parameter can be smaller than the time between the current counting carried out by the two-dimension code scanner and the photoelectric sensor and the end of next initial counting, real-time scanning and calibration are automatically triggered, calibration precision, namely the error range, desired calibration precision, namely, the error range is achieved, therefore accurate real-time automatic calibration is achieved, and applicability of the two-dimension code scanning system is improved.

The invention discloses a method for improving sensitivity of an infrared push-scanning imaging system, which is a novel imaging method based on the digital time delay integration. In the method, an infrared two-dimensional array probe is used for imaging in a linear-array push-scanning manner; one dimension of the two dimensions is used as a serial scanning dimension while the other dimension ofthe two dimensions is used as a push scanning dimension. A pixel voltage value which serially scans a same scenery during a push scanning process is read out by a read-out circuit inside the probe; the pixel voltage value is digitally accumulated and normalized inside an FPGA (Field Programmable Gate Array) after being amplified and quantized in an information obtaining circuit; the normalized image is transmitted to a storage medium. In an M-order infrared system of the digital time delay and integration, if noise inside the probe or noise of the information obtaining circuit is main noise, a signal to noise ratio of the system is proportional to M1/2; and if background photon noise is the main noise, the signal to noise ratio of the system is superior to M1/2.

Systems and methods are provided for detecting an object of object class, such as faces, in an image sensor. In some embodiments, the image sensor can provide a scan sequence that scans a scene over multiple time intervals. The image sensor can scan, in succession, portions of a scene, where each of the portions covers a different amount or location of the scene. This way, the scanned portions can be saved in an image buffer that is sized significantly smaller than an entire frame. In some embodiments, when the image sensor detects the presence of an object of the object class, the image sensor can store positional information (e.g., location and size of the object) in a region of interest buffer. The image sensor can output the positional information to aid an electronic device, such as a camera, perform various functions, such as automatic exposure and color balancing.