Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

IRIG-B-based time and frequency synchronization state information coding format and coding method

A technology of time-frequency synchronization and state information, which is applied in multiplex communication, time-division multiplex system, electrical components, etc., and can solve problems such as inability to time-synchronize state information transmission

Active Publication Date: 2015-05-06
DATANG TELECOM TECH CO LTD
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above problems, provide a kind of IRIG-B-based time-frequency synchronization status information encoding format and encoding method, the encoding method is improved by adjusting the encoding method of IRIG-B, the IRIG-B symbol Redefining some bytes can solve the problem of time synchronization state information transmission, and solve the problem that the existing IRIG-B encoding method cannot transmit some key time synchronization state information

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • IRIG-B-based time and frequency synchronization state information coding format and coding method
  • IRIG-B-based time and frequency synchronization state information coding format and coding method
  • IRIG-B-based time and frequency synchronization state information coding format and coding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0022] see figure 1 , the present invention is based on the time-frequency synchronization state information encoding format of IRIG-B, and re-encodes P80-P88 and P90-P98 in the IRIG-B code in the IEEEESTD1344-1995 standard, and the specific code elements are defined as follows:

[0023] P80-P88: Indicates the number of seconds in a day, expressed in binary, with a total of 17 digits, the lower 9 digits;

[0024] P90-P97: Indicates the number of seconds in a day, expressed in binary, with a total of 17 digits, the upper 8 digits;

[0025] P80: Leap second sign bit, '1' means positive leap second; '0' means negative leap second; leap second range is 0~255.

[0026] P81-P88: The number of leap seconds between the current international atomic time and UTC time, expressed in binary, P81 is the lowest bit, P88 is the highest bit;

[0027] P90-P93: Current time-frequency...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an IRIG-B-based time and frequency synchronization state information coding format and coding method. Through regulating and improving an IRIG-B coding method and redefining partial bytes of an IRIG-B code element, the time synchronization state information transmission can be realized, the problem that an existing IRIG-B coding method cannot transmit some key time synchronization state information is solved, and accordingly each node in a time synchronization network can monitor leap seconds, time service sources, time quality and frequency quality.

Description

technical field [0001] The invention relates to an encoding format and encoding method of time-frequency synchronization state information based on IRIG-B. Background technique [0002] An important coding format for transmitting time synchronization information at present is the IRIG-B code. The IRIG-B encoding follows the IEEE Std1344-1995 standard, which explains the filling method of time information in IRIG-B, and downstream devices can obtain accurate time information through the information in IRIG-B. However, this encoding method cannot transmit some key time-frequency synchronization status information, mainly in the following aspects: 1. It can only forecast the leap second, but the downstream equipment cannot obtain the current specific number of leap seconds. Second, the downstream device cannot obtain the reference source of the current IRIG-B code. 3. Although IEEE Std1344-1995 stipulates the time quality byte, it cannot meet the description requirements of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06
Inventor 黄成
Owner DATANG TELECOM TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com