Method and device for converting time format
A technology of time format and conversion device, applied in the direction of generating/distributing signals, etc., can solve the problems of time accuracy impact, resource consumption, time message time deviation, etc.
Inactive Publication Date: 2010-11-17
ZTE CORP
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Problems solved by technology
[0006] In the process of realizing the intercommunication between the GPS (or Beidou) interface and the clock synchronization interface of communication equipment, the format and definition of the two interfaces are different, and they cannot be directly interoperable
Moreover, since there are many protocol formats of GPS (or Beidou), if pure hardware logic is used to realize all protocol format conversions, it will be limited by hardware logic resources and consume resources, so the feasibility is low; if it is completely handed over to software implementation , due to the uncertainty of software processing time, there will be an uncertain deviation between the converted time message and the real time, and the time accuracy will be greatly affected
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[0042] The present invention can store the time message to be converted (sent by the upstream time synchronization device, that is, the main time synchronization device) through the upstream buffer space of the hardware logic, and the software reads the hardware buffer space when idle to obtain the time message to be converted; when the software converts the time message Convert it to the required format and then send it to the hardware logic, which stores the converted time message in the downlink buffer space; after a fixed delay time, the hardware logic sends the time message to the downstream synchronized device. The fixed delay time can be configured by software, and when the software performs format conversion, the fixed delay time is added to the converted time message. The hardware logic starts timing from the receipt of the upstream synchronization time message, and when the fixed delay time is filled, the converted time message is read from the downlink cache and sent...
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The invention discloses a method and a device for converting a time format. The method comprises the following steps: receiving a periodic timing request signal sent by a main timing device, storing and counting, wherein the periodic timing request signal comprises a first time message and time stamp information; converting the first time message into a second time message; storing the second time message and the time stamp information, and extracting the second time message and the time stamp information after a delay time is fixed; and sending the second time message and the time stamp information to a sub-timing device. In the invention, when the interface format of GPS (or RDSS) is converted into the interface formats of other devices through cooperation of software and hardware, the treatment time of conversion processes does not affect time information.
Description
technical field [0001] The invention relates to the technical field of clock synchronization, in particular to a time format conversion method and device. Background technique [0002] In the prior art, the time information (year / month / day / hour / minute / second) of various communication devices or computer devices in the communication network can be limited to a sufficiently small range based on the time deviation of UTC (Coordinated Universal Time) (such as 100ms), to realize the clock synchronization of the communication network. Because the computer clock is often used to record the time information of events, such as E-MAIL sending / receiving time, file creation time, access time and database processing time and other applications. Computer clocks are also commonly used to control backup operations and other applications. Many of the above applications will not function properly if the computer clock is inaccurate. It can be seen that clock synchronization is extremely im...
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IPC IPC(8): G06F1/12
Inventor 于洪涛
Owner ZTE CORP