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Time setting system and time setting method
US9213360B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9213360-B2 |
| Application number | US-11533505-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 27, 2005 |
| Priority date | Apr 27, 2004 |
| Publication date | Dec 15, 2015 |
| Grant date | Dec 15, 2015 |
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Abstract
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The present invention provides a time setting system and method thereof that are capable of correctly setting time if a delay occurs in the transmission of time information. In the system for setting a master time outputted from a master apparatus to a slave time of a slave apparatus that counts time independently of the master apparatus, the slave apparatus has transmission section for transmitting master time request information to the master apparatus via a network and the master apparatus has an allowable range information acquisition section for acquiring allowable range information indicative of an allowable time in which the master time may be set to the slave time of the slave apparatus and transmission section for transmitting the master time and allowable range information to the slave apparatus. The slave apparatus obtains a time difference between a first slave time to be obtained before or after the transmission of master time request information and a second slave time to be obtained at reception of the master time and the allowable range information. If the allowable time is greater than the obtained time difference, the master time is set.
First claim
Opening claim text (preview).
What is claimed is: 1. A time setting system, comprising: a slave apparatus including a random number generator configured to generate a random number; a processing circuit configured to compute a random offset time from the random number; a slave timer configured to output a first slave time; and a slave transmitter configured to transmit, at a time equal to the first slave time plus the random offset time, a master time information request to a master apparatus via a netw…
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Classifications
Electricity · mapped topic
- G06F1/14Primary
Physics · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9213360B2 cover?
- The present invention provides a time setting system and method thereof that are capable of correctly setting time if a delay occurs in the transmission of time information. In the system for setting a master time outputted from a master apparatus to a slave time of a slave apparatus that counts time independently of the master apparatus, the slave apparatus has transmission section for transmi…
- Who is the assignee on this patent?
- Ishii Tamotsu, Kuno Hiroshi, Soma Shunichi, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G06F1/14. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 15 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).