Abstract:
The present invention discloses a method and system for detecting the frame boundary of a data stream received in Forward Error Correction layer in the Ethernet. The present invention can increase the speed of frame boundary detection and the speed of frame synchronization without adding any overheads of hardware.
Abstract:
The present invention discloses a frame boundary detection system and a synchronization system for a data stream received by an Ethernet Forward Error Correction layer. The frame boundary detection system includes a shifter, two descramblers, a syndrome generator and trapper. The error trapper includes a big-little endian mode controller for controlling the big-little endian conversion of the error trapper. If the error trapper operates in the big endian mode, the error trapper implements the function of the syndrome generator, operates at the same time with the syndrome generator, and performs a second FEC check, wherein when the shifter performs the FEC check by intercepting data with a length of one frame plus A bits, two start positions of the frame can be verified, where A is a positive integer less than a length of one frame. The invention can improve the frame boundary detection speed and the frame synchronization speed, and increase only a few hardware overheads.
Abstract:
A navigation device includes a processing unit electrically connected to a positioning unit and a communication unit. The positioning unit determines a current location of the navigation device and provides corresponding positioning information. The communication unit receives real-time information. The processing unit uses the real-time information and information about a waypoint as a basis to generate a safety speed range, and uses a navigation route and the positioning information as a basis to determine whether a distance between the navigation device and the waypoint is smaller than a preset distance range. If yes, the processing unit provides a speed limit message based on the safety speed range. A navigation device control method as well as a program-storing computer-readable storage medium and a computer program product enabling implementation of the control method are also disclosed.
Abstract:
The present invention discloses a method and system for detecting the frame boundary of a data stream received in Forward Error Correction layer in the Ethernet. The present invention can increase the speed of frame boundary detection and the speed of frame synchronization without adding any overheads of hardware.
Abstract:
The present invention discloses a frame boundary detection system and a synchronization system for a data stream received by an Ethernet Forward Error Correction layer. The frame boundary detection system includes a shifter, two descramblers, a syndrome generator and trapper. The error trapper includes a big-little endian mode controller for controlling the big-little endian conversion of the error trapper. If the error trapper operates in the big endian mode, the error trapper implements the function of the syndrome generator, operates at the same time with the syndrome generator, and performs a second FEC check, wherein when the shifter performs the FEC check by intercepting data with a length of one frame plus A bits, two start positions of the frame can be verified, where A is a positive integer less than a length of one frame. The invention can improve the frame boundary detection speed and the frame synchronization speed, and increase only a few hardware overheads.
Abstract:
The invention discloses an electronic apparatus. The electronic apparatus includes a storage module, a receiving module, a processing module, and a display module. The storage module is used to store a plurality of image data, and each image data has a corresponding coordinate data. The receiving module is used to receive a positioning data related to the electronic apparatus. The processing module is used to select at least one image data according to the positioning data and the coordinate data. The display module is used to display the at least one image data.