CN108712225B - Method and device for acquiring time synchronization information, electronic equipment and computer readable storage medium - Google Patents
Method and device for acquiring time synchronization information, electronic equipment and computer readable storage medium Download PDFInfo
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- CN108712225B CN108712225B CN201810475776.7A CN201810475776A CN108712225B CN 108712225 B CN108712225 B CN 108712225B CN 201810475776 A CN201810475776 A CN 201810475776A CN 108712225 B CN108712225 B CN 108712225B
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- digital television
- network
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- television signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0602—Systems characterised by the synchronising information used
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
Abstract
The invention relates to a method and a device for acquiring time synchronization information, electronic equipment and a computer readable storage medium. The method comprises the following steps: detecting a television channel signal of the network digital television terminal; determining the validity of the digital television signal in response to detecting that the network digital television terminal is in a digital television channel; and in response to determining that the digital television signal is invalid, causing the network digital television terminal to obtain time synchronization information from the network time protocol server so that the network digital television terminal synchronizes to the current time. The embodiment of the invention can dynamically determine to adopt different modes to update the time according to different signal conditions, and effectively solves the problem of influence on user operation caused by the fact that time synchronization information cannot be acquired.
Description
Technical Field
The present invention generally relates to the field of information processing, and in particular, to a method and apparatus for acquiring time synchronization information, an electronic device, and a computer-readable storage medium.
Background
Network digital television terminals are becoming widely used. The network digital television terminal is a television terminal which has network access capability and can receive digital television signals. At present, most of network digital television terminals are developed based on a Linux system, and the default time of the Linux system is 1970. However, many applications require a valid time check, so the network digital television terminal needs to acquire time or clock synchronization information in order to synchronize with the current time, thereby satisfying the application requirements.
Note that in the conventional time synchronization operation, if the user does not receive a valid digital television signal at home, it may happen that the user cannot obtain valid time under a digital television channel all the time, thereby causing an error when accessing some network contents requiring valid time verification.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present invention provide a method, an apparatus, an electronic device, and a computer-readable storage medium for acquiring time synchronization information, so as to dynamically determine to adopt different modes to update time according to different signal conditions, and effectively solve the problem of influence on user operation caused by that time synchronization information cannot be acquired.
In a first aspect of the present invention, a method of acquiring time synchronization information is provided. The method comprises the following steps: detecting a television channel signal of the network digital television terminal; determining the validity of the digital television signal in response to detecting that the network digital television terminal is in a digital television channel; and in response to determining that the digital television signal is invalid, causing the network digital television terminal to obtain time synchronization information from the network time protocol server so that the network digital television terminal synchronizes to the current time.
In certain embodiments, the method further comprises: in response to determining that the digital television signal is valid, time synchronization information is obtained from the digital television signal.
In certain embodiments, the method further comprises: and in response to detecting that the network digital television terminal is in the non-digital television channel, enabling the network digital television terminal to acquire the time synchronization information from the network time protocol server.
In some embodiments, causing the network digital television terminal to acquire the time synchronization information from the network time protocol server comprises: detecting the accessibility of the network digital television terminal and a network time protocol server through a network; and in response to detecting that the network time protocol server is reachable, obtaining time synchronization information from the network time protocol server via the network. In certain embodiments, the method further comprises: and periodically storing the current time information in a memory of the network digital television terminal.
In certain embodiments, the method further comprises: and responding to the invalidity of the digital television signal and the inaccessibility of the network time protocol server, and acquiring the time information stored in the memory to be used as time synchronization information for the network digital television terminal. In some embodiments, determining the validity of the digital television signal comprises: detecting whether a digital television signal exists in a digital television channel; in response to the absence of the digital television signal, determining the digital television signal as invalid and in response to the presence of the digital television signal, detecting whether a date-time table and/or a time-offset table is present in a transport stream packet of the digital television signal; and determining the digital television signal as invalid in response to the absence of the date and/or time offset schedule, and determining the digital television signal as valid in response to the presence of the date and/or time offset schedule.
In some embodiments, obtaining time synchronization information from a digital television signal comprises: a date and time schedule and/or a time offset schedule is extracted from transport stream packets of a digital television signal.
In a second aspect of the present invention, an apparatus for acquiring time synchronization information is provided. The device includes: the detection unit is used for detecting a television channel signal of the network digital television terminal; the determining unit is used for responding to the detection that the network digital television terminal is in a digital television channel and determining the validity of the digital television signal; and an acquisition unit, which is used for responding to the determined digital television signal is invalid, so that the network digital television terminal acquires the time synchronization information from the network time protocol server, so that the network digital television terminal synchronizes to the current time.
In certain embodiments, the apparatus further comprises: and a second acquisition unit for acquiring the time synchronization information from the digital television signal in response to determining that the digital television signal is valid.
In certain embodiments, the apparatus further comprises: and the third acquisition unit is used for responding to the detection that the network digital television terminal is in the non-digital television channel, so that the network digital television terminal acquires the time synchronization information from the network time protocol server.
In some embodiments, the obtaining unit comprises: the second detection unit is used for detecting the accessibility of the network digital television terminal and the network time protocol server through the network; and a fourth acquisition unit for acquiring the time synchronization information from the network time protocol server via the network in response to detecting that the network time protocol server is reachable.
In certain embodiments, the apparatus further comprises: and the backup unit is used for regularly saving the current time information in a memory of the network digital television terminal.
In certain embodiments, the apparatus further comprises: and the fifth acquisition unit is used for acquiring the time information stored in the memory as time synchronization information for the network digital television terminal to use in response to the invalidity of the digital television signal and the inaccessibility of the network time protocol server.
In some embodiments, the determining unit comprises: the third detection unit is used for detecting whether the digital television signal exists in the digital television channel and detecting whether a date time table and/or a time offset table exists in a transmission stream packet of the digital television signal; and a second determining unit for determining the digital television signal as invalid in response to the absence of the digital television signal, and determining the digital television signal as invalid in response to the absence of the date-time table and/or the time offset table.
In some embodiments, the apparatus second obtaining unit is further configured to extract a date-time table and/or a time-offset table from transport stream packets of the digital television signal.
In a third aspect of the invention, an electronic device is provided. The electronic device includes: a processor; and a memory storing processor-readable instructions which, when executed by the processor, cause the processor to perform the method described according to the first aspect of the invention.
In a fourth aspect of the invention, there is provided a computer readable storage medium storing machine readable instructions which, when executed by a machine, cause the machine to perform the method described in accordance with the first aspect of the invention.
The method and the device for acquiring the synchronization time provided by the embodiment of the invention can dynamically determine to adopt different modes to update the time according to different signal conditions. The validity of the signal is judged in the digital television channel to determine whether to switch to a network mode or other modes to update the time, so that a user does not need to access the digital television signal to update the time, and the influence on some operations of the user requiring time verification due to the fact that the time is not correct because the synchronous time information cannot be acquired is avoided.
Drawings
Fig. 1 shows a flow diagram of a method of acquiring time synchronization information according to one embodiment of the invention; and
fig. 2 is a schematic diagram of an apparatus for acquiring time synchronization information according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings. Those skilled in the art will appreciate that the present invention is not limited to the drawings and the following examples.
As used herein, the term "include" and its various variants are to be understood as open-ended terms, which mean "including, but not limited to. The term "based on" may be understood as "based at least in part on". The term "one embodiment" may be understood as "at least one embodiment". The term "another embodiment" may be understood as "at least one other embodiment".
As described above, the existing operations such as grabbing a target object on a conveyor belt have a defect that the operation purpose cannot be accurately and quickly achieved, and embodiments of the present invention provide a method, an apparatus, and a system for synchronous tracking of a conveyor belt of a robot, which can quickly achieve positioning and tracking of a target object, reduce speed fluctuation, and improve precision and work efficiency of an industrial system.
As described above, when the existing network digital television terminal performs time synchronization operation, errors often occur when accessing some network contents that need valid time verification. In order to effectively solve the problem, the invention provides a method for acquiring time synchronization information for a network digital television terminal to synchronize time, which considers dynamically applying a plurality of modes to acquire the time synchronization information.
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Fig. 1 shows a flow diagram of a method 100 of acquiring time synchronization information according to an embodiment of the invention. The method 100 may be executed at a network digital television terminal, or at any device capable of communicating with the network digital television terminal and collecting relevant information.
At 110, a television channel signal of the network digital television terminal is detected. The network digital television terminal may have a plurality of television channels, such as a digital channel, a High Definition Multimedia Interface (HDMI) channel, etc., an AV channel, etc. The validity of the digital television signal is then determined at 120 in response to detecting that the network digital television terminal is in a digital television channel.
According to one embodiment of the present invention, the validity of a digital television signal may be determined as follows. When the network digital television terminal is in a digital television channel, whether a digital television signal exists in the digital television channel is detected. If the digital television signal is not present, the digital television signal is determined to be invalid.
On the other hand, if the digital television signal is detected, it is further detected whether Time synchronization information, for example, a Time & date Table (TDT) and/or a Time Offset Table (TOT), exists in a Transport Stream (TS) packet of the digital television signal.
The digital television signal is determined to be invalid when the absence of the TDT table and/or the TOT table is detected, and the digital television signal is determined to be valid if the presence of the TDT table and/or the TOT table is detected.
At 130, in response to determining that the digital television signal is invalid, the network digital television terminal is caused to obtain time synchronization information from the network time protocol server for the network digital television terminal to synchronize to the current time. Specifically, when it is determined that the digital television signal is invalid, reachability of the Network digital television terminal to a Network Time Protocol (NTP) server via a Network may be detected. If the NTP server is detected to be reachable, the current time is obtained from the NTP server via the network.
According to an embodiment of the present invention, if it is detected at 110 that the network digital television terminal is in a non-digital television channel, such as an HDMI channel, an AV channel, etc., the network digital television terminal is caused to acquire time synchronization information from the NTP server according to the aforementioned method.
According to one embodiment of the invention, if the digital television signal is determined to be valid at 120, time synchronization information is obtained directly from the digital television signal. For example, the TDT table and/or the TOT table are extracted from TS packets of the digital television signal.
According to one embodiment of the invention, after the network digital television terminal acquires the time synchronization information and obtains the current time, the current time is periodically saved in the memory. For example, the time information in the memory may be updated at a certain period. This provides a backup mechanism in the event that the digital television signal is invalid and the NTP server is not reachable. At this time, the time information stored in the memory can be used as time synchronization information for the network digital television terminal.
The technical scheme for acquiring the time synchronization information provided by the invention provides a plurality of time synchronization modes, namely a network access acquisition mode, an effective digital television signal acquisition mode and a backup mode. Embodiments of the present invention dynamically determine to use different modes to update time according to different signal conditions, for example, by determining the validity of a signal in a digital television channel to determine whether to dynamically switch to a network access mode or a backup mode to update time. The method effectively solves the problem that the influence on some operations of the user requiring time verification due to the fact that the time synchronization information is not acquired.
Fig. 2 is a schematic diagram of an apparatus 200 for acquiring time synchronization information according to an embodiment of the present invention, where the apparatus 200 may be a part of a network digital television terminal, or may be a device or a part thereof capable of communicating with the network digital television terminal and collecting related information. As shown, the apparatus 200 includes: a detecting unit 210, configured to detect a television channel signal of the network digital television terminal; a determining unit 220, configured to determine validity of the digital television signal in response to detecting that the network digital television terminal is in the digital television channel; and an obtaining unit 230, configured to, in response to determining that the digital television signal is invalid, cause the network digital television terminal to obtain time synchronization information from the network time protocol server so that the network digital television terminal synchronizes to the current time.
In some embodiments, the apparatus further includes a backup unit 240 for periodically saving the current time information in the memory of the network digital television terminal, and a fifth obtaining unit for obtaining the time information saved in the memory as the time synchronization information for the network digital television terminal in response to the digital television signal being invalid and the network time protocol server being unreachable.
In certain embodiments, the apparatus further comprises: a second acquiring unit for acquiring time synchronization information from the digital television signal in response to determining that the digital television signal is valid, for example, extracting a date-time table and/or a time offset table from a transport stream packet of the digital television signal; and a third obtaining unit, configured to, in response to detecting that the network digital television terminal is in the non-digital television channel, cause the network digital television terminal to obtain the time synchronization information from the network time protocol server.
In some embodiments, the obtaining unit comprises: the second detection unit is used for detecting the accessibility of the network digital television terminal and the network time protocol server through the network; and a fourth acquisition unit for acquiring the time synchronization information from the network time protocol server via the network in response to detecting that the network time protocol server is reachable.
In some embodiments, the determining unit comprises: the third detection unit is used for detecting whether the digital television signal exists in the digital television channel and detecting whether a date time table and/or a time offset table exists in a transmission stream packet of the digital television signal; and a second determining unit for determining the digital television signal as invalid in response to the absence of the digital television signal, and determining the digital television signal as invalid in response to the absence of the date-time table and/or the time offset table.
It should be understood that each unit in the apparatus 200 corresponds to each step in the method 100 described in connection with several embodiments with reference to fig. 1. Thus, the operations and features described above in connection with fig. 1 are equally applicable to the apparatus 200 and the units included therein, and have the same effects, and detailed description is omitted.
The embodiment of the invention also provides the electronic equipment. The apparatus includes a processor and a memory storing processor-readable instructions that, when executed by the processor, cause the processor to perform the method as previously described.
Embodiments of the present invention also provide a computer readable storage medium having stored thereon machine-readable instructions which, when executed by a machine, cause the machine to perform a method described in accordance with the present invention.
Those of skill in the art will understand that the logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be viewed as implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for obtaining time synchronization information, comprising:
detecting a television channel signal of the network digital television terminal;
responding to the detection that the network digital television terminal is in a digital television channel, and determining the validity of the digital television signal;
in response to determining that the digital television signal is invalid, enabling the network digital television terminal to acquire time synchronization information from a network time protocol server so that the network digital television terminal synchronizes to the current time; in response to determining that the digital television signal is valid, obtaining the time synchronization information from the digital television signal;
in response to detecting that the network digital television terminal is in a non-digital television channel, enabling the network digital television terminal to acquire time synchronization information from a network time protocol server; and the number of the first and second groups,
and regularly storing the current time information in a memory of the network digital television terminal, and acquiring the time information stored in the memory to be used as time synchronization information for the network digital television terminal in response to the invalidity of the digital television signal and the inaccessibility of the network time protocol server.
2. The method according to claim 1, wherein the network digital television terminal obtaining the time synchronization information from the network time protocol server comprises:
detecting the accessibility of the network digital television terminal and a network time protocol server through a network; and
in response to detecting that the network time protocol server is reachable, obtaining the time synchronization information from the network time protocol server via the network.
3. The method of claim 1, wherein determining the validity of the digital television signal comprises:
detecting whether a digital television signal exists in the digital television channel;
in response to the absence of the digital television signal, determining the digital television signal as inactive, and in response to the presence of the digital television signal,
detecting whether a date-time table and/or a time offset table exist in a transmission stream packet of the digital television signal; and
in response to the absence of the date and/or time shift schedule, determining the digital television signal as inactive, and in response to the presence of the date and/or time shift schedule, determining the digital television signal as active.
4. The method of claim 1, wherein obtaining the time synchronization information from the digital television signal comprises: extracting a date-time table and/or a time-offset table from transport stream packets of the digital television signal.
5. An apparatus for acquiring time synchronization information, comprising:
the detection unit is used for detecting a television channel signal of the network digital television terminal;
the determining unit is used for responding to the detection that the network digital television terminal is in a digital television channel and determining the validity of the digital television signal;
a first obtaining unit, configured to, in response to determining that the digital television signal is invalid, enable the network digital television terminal to obtain time synchronization information from a network time protocol server, so that the network digital television terminal synchronizes to a current time;
a second obtaining unit, configured to obtain the time synchronization information from the digital television signal in response to determining that the digital television signal is valid;
a third obtaining unit, configured to, in response to detecting that the network digital television terminal is in a non-digital television channel, enable the network digital television terminal to obtain time synchronization information from a network time protocol server;
the backup unit is used for regularly saving the current time information in a memory of the network digital television terminal; and the number of the first and second groups,
and the fifth acquiring unit is used for responding to the invalidity of the digital television signal and the inaccessibility of the network time protocol server, and acquiring the time information stored in the memory to be used as time synchronization information for the network digital television terminal.
6. The apparatus of claim 5, wherein the first obtaining unit comprises:
the second detection unit is used for detecting the accessibility of the network digital television terminal and the network time protocol server through the network; and
a fourth obtaining unit, configured to obtain the time synchronization information from the network time protocol server via the network in response to detecting that the network time protocol server is reachable.
7. The apparatus of claim 5, wherein the determining unit comprises:
the third detection unit is used for detecting whether a digital television signal exists in the digital television channel and detecting whether a date time table and/or a time offset table exists in a transmission stream packet of the digital television signal; and
a second determining unit for determining the digital television signal as invalid in response to the absence of the digital television signal, and determining the digital television signal as invalid in response to the absence of the date and time table and/or time offset table.
8. The apparatus according to claim 5, wherein the second obtaining unit is further configured to extract a date-time table and/or a time-offset table from the transport stream packets of the digital television signal.
9. An electronic device, comprising:
a processor; and
a memory storing instructions readable by the processor, the instructions, when executed by the processor, causing the processor to perform the method of any of claims 1-4.
10. A computer readable storage medium having stored thereon machine readable instructions which, when executed by the machine, cause the machine to perform the method of any one of claims 1-4.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521728A (en) * | 2008-12-26 | 2009-09-02 | 康佳集团股份有限公司 | Television signal identification method and television |
| CN107493499A (en) * | 2017-08-08 | 2017-12-19 | 青岛海信电器股份有限公司 | Terminal system method for updating time, device and electronic equipment |
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| US8422509B2 (en) * | 2008-08-22 | 2013-04-16 | Lg Electronics Inc. | Method for processing a web service in an NRT service and a broadcast receiver |
| CN105516118B (en) * | 2015-12-03 | 2019-06-11 | Tcl集团股份有限公司 | A kind of method for synchronizing time and system based on non-RTC smart television |
| CN106412697A (en) * | 2016-09-20 | 2017-02-15 | 深圳Tcl数字技术有限公司 | Method and device for automatically acquiring time zone for smart television |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101521728A (en) * | 2008-12-26 | 2009-09-02 | 康佳集团股份有限公司 | Television signal identification method and television |
| CN107493499A (en) * | 2017-08-08 | 2017-12-19 | 青岛海信电器股份有限公司 | Terminal system method for updating time, device and electronic equipment |
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