CN102281409A - Television capable of automatically calibrating time and time calibration method thereof - Google Patents
Television capable of automatically calibrating time and time calibration method thereof Download PDFInfo
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- CN102281409A CN102281409A CN2010101986768A CN201010198676A CN102281409A CN 102281409 A CN102281409 A CN 102281409A CN 2010101986768 A CN2010101986768 A CN 2010101986768A CN 201010198676 A CN201010198676 A CN 201010198676A CN 102281409 A CN102281409 A CN 102281409A
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Abstract
The invention provides a television capable of automatically calibrating time. The television comprises: a decoder, a processor, a display output module and a memory. The decoder is used to analyze corresponding service information from transport streams (TSs) of a plurality of channels and give to the processor. The processor acquires time information provided by each channel from the service information so as to calibrate the current local time of the television. The memory is used to store the time information of each channel and provide for the processor to call. The display output module is used to display a calibration result of the current local time. The television compares and analyzes all time day table/time offset table included by the TSs. After acquiring a contrast, when the most TSs appear a same time, the television takes the time as the current local time after being calibrated.
Description
Technical field
The present invention relates to TV tech, relate in particular to television set and the time calibrating method thereof of a kind of automatic alignment time.
Background technology
At present, the temporal information that provides in the digital television signal is a definition time in the TDT/TOT table (Time Day Table/Time Offset Table) in PSI/SI.Each TS stream (Transport Stream, transport stream) comprises different TDT/TOT tables, and actual digital television signal comprises a plurality of TS streams (physical frequencies comprises a TS stream), that is to say that the time that each TS stream provides is different, the TDT/TOT table comprises UTC time (Coordinated Universal Time(UTC) Co-ordinated Universal Time), (date is revised the scholar settled date to MJD, Modified Julian Day) and Local_time_offset (local zone time is poor), get up to be only the actual local TV time by these information combination, UTC=22:00 for example, MJD=2010-4-18, Local_time_offset=GMT+3, so real current local zone time is 01:00,2010-4-19.
And because the difference of operator as long as the mistake of UTC time, MJD date and Local_time_offset any one parameter in the local time difference takes place, all can cause TV to get access to wrong current local zone time in actual signal.And operator's frequent generation of signal of sending do not transmit the problem of TDT/TOT table, causes TV directly to show the no time, or because of the relation of region, watches the TV programme of different local zone time differences.
The TDT/TOT table data of obtaining single TS stream in view of television set are that TV is during the time, the problem that TDT/TOT table mistake itself might occur and cause the TV acquisition time to be made mistakes, be necessary to provide the method for a kind of automatic alignment time of television set, automatically the time of obtaining is calibrated, avoid makeing mistakes.
Summary of the invention
The object of the present invention is to provide television set and the time calibrating method thereof of a kind of automatic alignment time, the TDT/TOT table that comprises in can flowing all TS that television set receives compares analysis, and current local zone time is calibrated.
Technical scheme of the present invention is as follows:
The television set of a kind of automatic alignment time, comprise: decoder, processor, demonstration output module and memory, described decoder is used for respectively parsing corresponding information on services from the transport stream of a plurality of channels and gives processor, described processor obtains the temporal information that each channel provides from information on services, current local zone time to television set is calibrated, described memory is used to store the temporal information of each channel and calls for processor, and described demonstration output module is used to show the calibration result of current local zone time.
The television set of described automatic alignment time, wherein, described processor judges in the temporal information that a plurality of channels provide whether identical temporal information is arranged, with the current local zone time of the maximum temporal information of number of repetition after as calibration.
The television set of described automatic alignment time, wherein, described temporal information comprises UTC, MJD and the Local_time_offset information that TDT and TOT table provides in the information on services.
The television set of described automatic alignment time, it also comprises the remote control receiver module that is used to receive the remote control command of user's input and is transferred to processor.
The method of a kind of automatic alignment time of television set may further comprise the steps:
A. activationary time automatic calibration function;
B. obtain all frequency point information in the channel table, obtain the information on services of a channel in the channel table;
C. judging whether to have handled all channels in the channel table, is then to enter step I, otherwise enters step D;
D. obtain the TDT table and the TOT table of this channel;
E. from the TDT table, obtain UTC and MJD, from the TOT table, obtain Local_time_offset;
F. judging whether to obtain temporal information, is then to enter step H, otherwise enters step G;
G. write down this channel;
H. store the temporal information that this channel provides and return step B;
I. compare the temporal information that each channel provides, current local zone time is calibrated.
Described method, wherein, described step F specifically comprises step:
F1. judging whether to have got access to the TDT table, is then to enter next step, does not obtain temporal information otherwise be judged to be, and enters step G;
F2. judge whether to get access to TOT table, do not get access to the TOT table and then add the temporal information that MJD provides for this channel and enter step H, get access to the TOT table and then enter next step with the UTC in the TDT table;
F3. judge whether the Local_time_offset in the TOT table is effective; effective then add the normal acquisition time information of Local_time_offset in MJD and the TOT table according to the UTC in the TDT table, invalidly then add the temporal information that MJD provides as this channel and enter step H with the UTC in the TDT table.
Described method, wherein, described step F 3 further comprises step:
Whether the Country_code that F31. checks the Local_time_offset_descriptor in the TOT table is identical with default country code, identically then enters next step, and difference judges that then Local_time_offset is invalid;
F32. relatively whether the Country_region_id of Local_time_offset_descriptor is 000000, is not that then relatively whether Country_region_id is consistent with default area value, is to judge that then Local_time_offset is effective, otherwise invalid.
Described method wherein, in described step F 32, if the Country_region_id among the Local_time_offset_descriptor is 000000, judges that then not have regional time zone in this country poor.
Described method wherein, in described step G, if the record result shows that all channels all do not get access to TDT table, is then pointed out in user's TV signal not transmission time information.
Described method, wherein, in described step I, the temporal information that all channels from channel list are obtained compares, and draws the maximum temporal information of number of repetition as the current local zone time after calibrating.
By scheme provided by the invention, the TDT/TOT table that directly TS of all channels in whole signal network stream is comprised by television set compares analysis, after getting access to a contrast, in that most TS stream is all consistent when showing the identical time, with this time as the current local zone time after the television set calibration, and show with the form of the menu temporal information with all TS streams, select for the user.
Description of drawings
Fig. 1 is the block diagram of the television set better embodiment of automatic alignment time of the present invention;
Fig. 2 is the flow chart of the method better embodiment of automatic alignment time of television set of the present invention;
Fig. 3 is the operation interface schematic diagram of television set in the method better embodiment of automatic alignment time of television set of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1, the television set better embodiment of automatic alignment time of the present invention comprises: decoder 12, remote control receiving element 14, processor 15, demonstration output module 17 and memory 19.
Described decoder 12 is used for from TS stream (Transport Stream, transport stream) parses SI (Service Information in, information on services) is transferred to processor 15, so that processor 15 obtains the TDT/TOT table, wherein, the SI information that described decoder 12 parses is transmitted with table, the SI information table has defined 9 tables, comprise NIT table (Network Information Table, network information table), EIT shows (Event Information Table, Event Information Table) and SDT table (Service Description Table, and time and date table (TDT) and TOT Time Offset Table (TOT) are important component parts of information on services (SI) SDT Service Description Table) etc..
Described remote control receiver module 14 is used to receive the remote control command of user's input, and with the remote control mode that receives, the automatic calibration code that for example is used for the alignment time is transferred to processor 15.
Described processor is used to receive the automatic calibration code of remote control receiver module 14 inputs, and the decoding back obtains the TDT/TOT table of different frequent points according to the channel list that system has stored, behind the compare of analysis time is calibrated.
Described demonstration output module 17 is used to show automatic alignment time choice menus.
Described memory 19 is used to store UTC, MJD and the Local_time_offset parameter of each frequency.
Continue to consult Fig. 2, the method better embodiment of automatic alignment time of television set of the present invention comprises the steps:
Step S1, turn on the time menu of television set, the activationary time automatic calibration function;
Step S2, processor obtain the frequency point information in the channel table, and a frequency that reads successively in the channel table is the information on services of a channel;
Whether step S3, decision processor have handled all channels in the channel table successively, are then to enter step S9, otherwise enter step S4;
Step S4, processor obtain the TDT table and the TOT table of this channel;
Step S5, processor obtain UTC and MJD from the TDT table, obtain Local_time_offset from the TOT table;
Step S6, judge whether to obtain temporal information, be then to enter step S8, otherwise enter step S7;
Step S7, write down this channel;
Step S8, store the temporal information that this channel provides and return step S2;
Step S9, compare, draw the current local zone time of the maximum temporal information of number of repetition after and be presented in the automatic alignment time choice menus as calibration.
In above-mentioned steps S3, can judge whether according to the information on services of this channel that reads to repeat, thereby judge all channels of whether having handled in the channel table with the information on services that obtains before.
In above-mentioned steps S6, if this channel does not have the TDT table, can't obtain UTC and MJD then judges and can't obtain temporal information, if it is invalid only to get access to the Local_time_offset that TDT table do not get access in TOT table or the TOT table, time that provides for this channel with the UTC+MJD of TDT table then, if get access to the TOT table, check that then the Country_code (country code) among the Local_time_offset_descriptor (local zone time skew descriptor) in the TOT table is whether consistent with the country code that is provided with in the custom menu, invalid as inconsistent then this Local_time_offset_descriptor, as unanimity, the Country_region_id that compares Local_time_offset_descriptor again, at first relatively whether Country_region_id is 000000, judge then that in this way not have regional time zone in this country poor, as not being, then relatively whether the area of user preset value is consistent with Country_region_id, unanimity is then effective, inconsistent then this Local_time_offset_descriptor is invalid, Country_code and Country_region_id all with preset value compare to determine meet after, if Local_time_offset_polarity (local zone time deviation polarity) is 0, then Local_time (local zone time) is early than UTC, be that 1 Local_time is later than UTC, obtain the Local_time_offset of each channel successively.
Specifically be exemplified below: if definition has Country_id=CHN (China), Country_region_id=000000, Local_time_offset_polarity=1, Local_time_offset=8 in the TOT of certain channel table, the current local zone time that provides of this channel is UTC+8 so.
In above-mentioned steps S7, if the channel number of final entry is identical with channel table, promptly all channels all do not have TDT table, then point out in user's TV signal not transmission time information.
In better embodiment of the present invention, the interface of described automatic alignment time choice menus has shown calibrated current local zone time as shown in Figure 3 in the menu, and other temporal information that there are differences the X of TV station of time and Y and provide.
By scheme provided by the invention, the TDT/TOT table that directly TS of all channels in whole signal network stream is comprised by television set compares analysis, after getting access to a comparing result, in that most TS stream is all consistent when showing the identical time, with this time as the current local zone time after the television set calibration, promptly with the current local zone time of maximum time of number of repetition after, and show, select for the user with the form of menu temporal information with all TS streams as calibration.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (10)
1. the television set of an automatic alignment time, comprise: decoder, processor, demonstration output module and memory, described decoder is used for respectively parsing corresponding information on services from the transport stream of a plurality of channels and gives processor, described processor obtains the temporal information that each channel provides from information on services, current local zone time to television set is calibrated, described memory is used to store the temporal information of each channel and calls for processor, and described demonstration output module is used to show the calibration result of current local zone time.
2. the television set of automatic alignment time according to claim 1, it is characterized in that: described processor judges in the temporal information that a plurality of channels provide whether identical temporal information is arranged, with the current local zone time of the maximum temporal information of number of repetition after as calibration.
3. the television set of automatic alignment time according to claim 1 and 2 is characterized in that: described temporal information comprises UTC, MJD and the Local_time_offset information that TDT and TOT table provide in the information on services.
4. the television set of automatic alignment time according to claim 1, it also comprises the remote control receiver module that is used to receive the remote control command of user's input and is transferred to processor.
5. the method for an automatic alignment time of television set may further comprise the steps:
A. activationary time automatic calibration function;
B. obtain all frequency point information in the channel table, obtain the information on services of a channel in the channel table;
C. judging whether to have handled all channels in the channel table, is then to enter step I, otherwise enters step D;
D. obtain the TDT table and the TOT table of this channel;
E. from the TDT table, obtain UTC and MJD, from the TOT table, obtain Local_time_offset;
F. judging whether to obtain temporal information, is then to enter step H, otherwise enters step G;
G. write down this channel;
H. store the temporal information that this channel provides and return step B;
I. compare the temporal information that each channel provides, current local zone time is calibrated.
6. method according to claim 5 is characterized in that: described step F specifically comprises step:
F1. judging whether to have got access to the TDT table, is then to enter next step, does not obtain temporal information otherwise be judged to be, and enters step G;
F2. judge whether to get access to TOT table, do not get access to the TOT table and then add the temporal information that MJD provides for this channel and enter step H, get access to the TOT table and then enter next step with the UTC in the TDT table;
F3. judge whether the Local_time_offset in the TOT table is effective; effective then add the normal acquisition time information of Local_time_offset in MJD and the TOT table according to the UTC in the TDT table, invalidly then add the temporal information that MJD provides as this channel and enter step H with the UTC in the TDT table.
7. method according to claim 6 is characterized in that: described step F 3 further comprises step:
Whether the Country_code that F31. checks the Local_time_offset_descriptor in the TOT table is identical with default country code, identically then enters next step, and difference judges that then Local_time_offset is invalid;
F32. relatively whether the Country_region_id of Local_time_offset_descriptor is 000000, is not that then relatively whether Country_region_id is consistent with default area value, is to judge that then Local_time_offset is effective, otherwise invalid.
8. method according to claim 7 is characterized in that: in described step F 32, if the Country_region_id among the Local_time_offset_descriptor is 000000, judge that then not have regional time zone in this country poor.
9. method according to claim 6 is characterized in that: in described step G, if the record result shows that all channels all do not get access to TDT table, then point out in user's TV signal not transmission time information.
10. method according to claim 5 is characterized in that: in described step I, the temporal information that all channels from channel list are obtained compares, and draws the maximum temporal information of number of repetition as the current local zone time after calibrating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010198676 CN102281409B (en) | 2010-06-11 | 2010-06-11 | Television capable of automatically calibrating time and time calibration method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010198676 CN102281409B (en) | 2010-06-11 | 2010-06-11 | Television capable of automatically calibrating time and time calibration method thereof |
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| CN102281409A true CN102281409A (en) | 2011-12-14 |
| CN102281409B CN102281409B (en) | 2013-08-14 |
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| CN 201010198676 Expired - Fee Related CN102281409B (en) | 2010-06-11 | 2010-06-11 | Television capable of automatically calibrating time and time calibration method thereof |
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| CN103888786A (en) * | 2014-03-24 | 2014-06-25 | Tcl集团股份有限公司 | Clock calibration method and system |
| CN105071884A (en) * | 2015-07-29 | 2015-11-18 | 北京海尔集成电路设计有限公司 | Equipment for time calibration based on CDR and method |
| CN105744304A (en) * | 2016-02-18 | 2016-07-06 | 海信电子科技（深圳）有限公司 | EPG (Electronic Program Guide) data processing method and device |
| CN105933733A (en) * | 2016-05-18 | 2016-09-07 | 青岛海信传媒网络技术有限公司 | Clock synchronization method, clock synchronization device, set top box and 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 |
| TWI587105B (en) * | 2015-07-29 | 2017-06-11 | A remote control with time correction | |
| CN111601134A (en) * | 2020-03-27 | 2020-08-28 | Vidaa美国 | Time display method in display equipment and display equipment |
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| CN103888786A (en) * | 2014-03-24 | 2014-06-25 | Tcl集团股份有限公司 | Clock calibration method and system |
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| CN105071884A (en) * | 2015-07-29 | 2015-11-18 | 北京海尔集成电路设计有限公司 | Equipment for time calibration based on CDR and method |
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| CN111601134A (en) * | 2020-03-27 | 2020-08-28 | Vidaa美国 | Time display method in display equipment and display equipment |
| CN111601134B (en) * | 2020-03-27 | 2022-06-24 | Vidaa美国公司 | Time display method in display equipment and display equipment |
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| CN102281409B (en) | 2013-08-14 |
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