摘要:
A computer network for high-speed data communication, has a data transmission cable with a root and at least one leaf node. A signal conversion system (SCS) is attached to the root, and at least one client station is attached to a leaf node. The SCS consists of a transmitter that transmits down-stream data onto said cable in a first frequency band; and a receiver that receives data from said client stations on a second frequency band; wherein said down-stream data includes synchronization and acknowledgement signals. Each client station has a receiver that receives data on said first frequency band, and a transmitter that transmits data on a second frequency band according to synchronization signals received on said first frequency band. The computer network is controlled by a method comprising transmitting down-stream from the signal conversion system (SCS) a control signal having synchronization information on a first frequency band, receiving said control signal at client stations, transmitting up-stream from said client stations to said SCS on a second frequency band, the transmission being timed with respect to said synchronization information, and acknowledging on said first frequency band successful receipt by said SCS of said up-stream transmission. The client station's transmission packets may include requests for reserved slots on said second frequency band for subsequent transmissions, and the SCS has a scheduler operable to determine a start time for requested reserved slots, and transmits the start time for the requested reserved slots. The client stations are operable to wait to continue transmission until after waiting for the start time. Other systems and methods are disclosed.
摘要:
A computer network for high-speed data communication, has a data transmission cable with a root and at least one leaf node wherein the upstream transmission is synchronized by information received on a downstream channel. Each client station receives data on a first frequency band, and transmits data on a second frequency band according to synchronization signals received on the first frequency band. The client station's transmission packets may include requests for reserved slots on the second frequency band for subsequent transmissions, and the SCS has a scheduler operable to determine a start time for requested reserved slots, and transmits the start time for the requested reserved slots. The client stations are operable to wait to continue transmission after waiting for the start time.
摘要:
A computer network for high-speed data communication, has a data transmission cable with a root and at least one leaf node wherein the upstream transmission is synchronized by information received on a downstream channel. Each client station receives data on a first frequency band, and transmits data on a second frequency band according to synchronization signals received on the first frequency band. The client station's transmission packets may include requests for reserved slots on the second frequency band for subsequent transmissions, and the SCS has a scheduler operable to determine a start time for requested reserved slots, and transmits the start time for the requested reserved slots. The client stations are operable to wait to continue transmission after waiting for the start time.
摘要:
A video sequence control system that includes an input video frame buffer and an output video frame selection component is described. The input video frame buffer receives input video frames from a video source. The output video frame selection component determines the video frame to be output according to a scheduler that provides timing information and modulation information. The timing information includes information regarding when a video frame will be output. The modulation information varies dependent upon the frame types available to be output, wherein the available frame types include at least image frames from the input video frame buffer and functional frames, wherein the at least image frames and functional frames are output according to a pattern defined by the scheduler. In addition based on the timing information, a synchronization output signal is output corresponding to the output of the functional frame.
摘要:
A method and system of tracking documents uses tags and a workflow. Initially, a workflow is developed for each document or type of documents using a state diagram. The workflow specifies a subset of one or more destinations that the document is allowed to travel and a sequence for this travel. A tag is associated with each document to enable tracking of the document as it passes the one or more readers in the various destinations. These tag readers in turn report back position information on the document to assist in locating the document. A comparison between the state diagram for the workflow and the position information gathered from the tag readers determines if the document is outside the desired workflow. An alert is generated when the document is outside the workflow and not being processed as intended.
摘要:
An electronic device includes an enclosure for the electronic device and a duct extending from an interior to an exterior of the enclosure to exhaust airflow from the enclosure. The electronic device further includes an active noise control mechanism. The active noise control mechanism includes an internal sensor, an external sensor, and an acoustic wave generator. The internal sensor is arranged within the enclosure to sense a noise and generate an internal sensor output, and the external sensor is arranged outside of the enclosure to detect sounds and generate an external sensor output. Based on the internal sensor output and the external sensor output, the acoustic wave generator generates an acoustic wave within the duct to reduce the noise.
摘要:
A localization method for setting the locale of a configurable device is presented. The first portion of the localization transmits localization selections for a target locale to a configurable device. Localization selections are initially set on an interrogator device and then transmitted wirelessly using RFID or other technologies from the interrogator device to a tag coupled to the configurable device. A second portion of the localization receives localization selections for a target locale on the configurable device. A tag receives from an interrogator device one or more localization selections for the target locale on the configurable device. These localization selections are stored on the tag until the configurable device is powered-on. Device initialization causes another portion of the localization to set a target locale on a configurable device. Firmware accesses localization selections previously stored on the tag and then sets the default localization selections in the firmware for the device.
摘要:
Method and apparatus for digital photograph presentation. A method for digital photograph presentation in accordance with one embodiment includes reading a still-picture file for a selected photograph from a DVD disk (402), transcoding (500) data from the still-picture file into a sequence of frames, and decoding and presenting the sequence. An apparatus for digital photograph presentation in accordance with one embodiment is a DVD player device (400 or 410) that includes a transcoder (404 or 412) for converting in real-time (see 500) still-picture files to sequences of frames, a navigator (406) for selecting the still-picture files and for controlling the transcoder (404 or 412) to direct presentation of the sequences. A method for digital photograph presentation in accordance with another embodiment includes encoding (300) onto a DVD disc (202) MPEG2 sequences that include the digital photographs as I-picture frames, inserting the DVD disc into a DVD player (200), and navigating amongst the MPEG2 sequences and displaying selected photographs using the DVD player (200). An apparatus for digital photograph presentation in accordance with another embodiment is a DVD player (400 or 410) that includes a navigator (204) for selecting the digital photographs encoded as MPEG2 sequences on a DVD disk (202), an MPEG2 decoder (104) for receiving and decoding the MPEG2 sequences, and a frame buffer (106) for buffering the decoded MPEG2 sequences to be output as at least one video signal from the DVD player.
摘要:
A system and method for identification tag resolution is disclosed. The method discloses the elements of: identifying a set of attributes for a structure; assigning a tag to the structure; scanning the tag with a tag scanner; and modifying the structure's attributes, in response to scanning the tag. The structure's attributes can be modified in response to a value of a variety of variables, including a spatial variable, an orientational variable, a temporal variable, and a trust variable. The method also discloses that devices can be located proximate to the structure and, after a set of attributes identified for the device, the device's attributes can then be modified in response to scanning the tag. Also disclosed is that a set of attributes for the tag scanner can be identified and modified in response to scanning the tag. The system discloses all means for effecting the method.
摘要:
When editing a digital image that has previously been saved in a lossy manner (whether such losses result from the editing operations and/or from inherently lossy image file formats such as JPEG), each additional editing session typically compounds the overall losses. As an alternative, we disclose creating and storing a proxy for an edited image, the proxy including a baseline image and a series of meta data representing editing operations performed on that image. During a subsequent editing session, the edited image can be partially or wholly reconstructed by applying the meta data to the baseline image, resulting in a comparatively lossless version thereof. The reconstructed image can be used as a starting point for additional edits, thereby minimizing the compound losses that would otherwise have resulted.