CN101166249B - Method for integrated management of multi-network time - Google Patents
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- CN101166249B CN101166249B CN2006101364937A CN200610136493A CN101166249B CN 101166249 B CN101166249 B CN 101166249B CN 2006101364937 A CN2006101364937 A CN 2006101364937A CN 200610136493 A CN200610136493 A CN 200610136493A CN 101166249 B CN101166249 B CN 101166249B
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Abstract
Belonging to area of set-top box, the method includes steps: (1) demodulating signals of program sources received from different networks, the channel decoder outputs data packets of multiple programs; (2) the service information process unit separates out information of service data from data packets of multiple programs; (3) the said separated out service information includes table of time and date (TTD) as well as table of network information (TNI), which are saved in the information management unit in RAM for TTD and TNI; (4) based on information of TTD and TNI to generate the module of network time offset table, which is saved in fast flash memory, automatically in the time management module of multiple networks. The invention also discloses the system for implementing the method. For booking and recording programs in different network, the invention stars booking and recording programs according to real time of network the program located at.
Description
Technical field
The present invention relates to the top box of digital machine field, especially relate to and be used for individual video video recording (Personal Video Record, PVR) method and system of the integrated management of multi-network time of set-top box.
Background technology
Along with the continuous development of digital television business in China, set-top box just quietly enters huge numbers of families as the emerging household electrical appliances of receiving digital television, and the set-top box that has the PVR function is subjected to increasing people's favor especially.Present PVR set-top box all has the function that a reservation is recorded/play, but all be can only be for could be working properly under all the same situation of time of all frequencies, this may be correct in cable digital TV, but for satellite set top box or terrestrial set top box, just for the different situation of each frequency time possibility, idea when the program of recording the program that gets off or then playing is but subscribed with the client is different fully, perhaps then not record/play, perhaps shift to an earlier date or the like.Why such situation appears, be because the perfect integrated management of multi-network time mechanism of neither one causes, after switching channels arrives another network, if the time of the program place network of this network and reservation is different, the pre-order of those that subscribe will be incorrect, because after switching to another network, you can not reentry and subscribe the current time of program place network, unless switch back again.
Summary of the invention
The object of the present invention is to provide a kind of method of integrated management of multi-network time, the program that belongs to heterogeneous networks is subscribed when recording realizing, time with this program place network began to subscribe and record as the real time, and then it is consistent when subscribing with the user to reach the program of recording.
Another object of the present invention is to provide the realization system for carrying out said process.
The present invention realizes that the technical scheme that its purpose adopts is: the method for this integrated management of multi-network time comprises the steps:
A, channel decoder have comprised video, audio frequency and data message with the packet of the program source signal demodulation output Polymera of the heterogeneous networks that receives in the packet of described Polymera;
B, in central processing unit, the business information processing unit is isolated service data information from the data message of Polymera packet;
The Time of Day form and the network information form information that comprise in C, the business information that is separated are buffered in the Time of Day form/network information form information management unit of random asccess memory;
D, in many network times administration modules, automatic generating network TOT Time Offset Table module is according to Time of Day form and network information form information, generates network time offset table and it is stored in flash memory, realizes unified management different network time.
The present invention realizes that the technical scheme that its another purpose adopts is: the system of this integrated management of multi-network time comprises:
Channel decoder is used for the packet of the program source signal demodulation output Polymera of the heterogeneous networks that will receive;
Business information processing unit in the central processing unit is used for isolating service data information from the data message of Polymera packet;
Time of Day form/network information form information management unit is used for cache-time date form/network information form information;
Many network times administration module, comprising: automatic generating network TOT Time Offset Table module, self-defined network time the offset table module; Automatic generating network TOT Time Offset Table module is used for the automatic generating network TOT Time Offset Table, self-defined network time the offset table module be used for User Defined network time offset table;
Flash memory is used for the storage networking TOT Time Offset Table.
Compared with prior art, it is to begin to subscribe and record as the real time with time of this program place network that the present invention records for the reservation of the program that belongs to heterogeneous networks, it is just the same when subscribing with the user to record the program that gets off like this, solved owing to the frequency time of each network is different, it is different fully to cause recording the program that gets off or the program of then playing and the client idea when subscribing, perhaps then not record/play the problem that perhaps shifts to an earlier date.
Description of drawings
Fig. 1 is a system configuration schematic diagram of the present invention;
Fig. 2 is a basic controlling flow process schematic diagram of the present invention;
Fig. 3 is that the present invention starts shooting and reads network time offset table schematic flow sheet;
When being broadcast program of the present invention, upgrades Fig. 4 network time offset table schematic flow sheet;
Fig. 5 is that User Defined of the present invention is provided with baseline network time flow schematic diagram;
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
According to Fig. 1, system of the present invention comprise channel decoder (TUNER), business information processing unit, TDT/NIT (Time of Day form/network information form) information management unit and many network times administration module, flash memory (Flashmemory).Comprise in the above-mentioned many network times administration modules: automatic generating network TOT Time Offset Table module, self-defined network time the offset table module.
Channel decoder is with the packet (TS stream) of the program source signal demodulation output Polymera of the heterogeneous networks of reception, comprise video in the packet of Polymera, audio frequency and data message, from the data message of TS stream, isolate service data information by business information processing unit in the central processing unit (CPU), the service data information that is separated comprises that TDT (Time of Day form) and NIT (network information form) information cache are at the TDT/NIT of random asccess memory (RAM) (Time of Day form/network information form) information management unit, in many network times administration modules, automatic generating network TOT Time Offset Table module realizes unified management different network time according to TDT (Time of Day form) and NIT (network information form) information by working procedure automatic generating network TOT Time Offset Table, automatically generate network time offset table parameter information be stored in flash memory, the user by self-defined network time the offset table module carry out the self-defined baseline network that is provided with, the network time offset table information behind the User Defined also is stored in the flash memory.
In flash memory, set up " network time offset table " comes the all-network that recording user switched when cut bank time, the network that does not switch to, set-top box is the time that can not get access to this network.
Table 1
Annotate: the general network item is not have the current time field, only preserves skew
In network time offset table (table 1), it is "Yes" that " whether baseline network " field has only an item, and this is called " baseline network item ", and other this field is a "No" entirely, is called " general network item ", and can only there be a baseline network item in system.
The time of skew is to be unit with the second, and is in addition just record-shifted/negative, mainly is in order to represent longer time migration, and such design probably can represent to differ the skew about 146 years.
The baseline network item also writes down a present networks current time (being designated as the baseline network time) and a difference, being calculated as follows of difference: if the user was provided with the baseline network time, then the baseline network current time then is provided with the baseline network time later for the user, difference is recording user setting fiducial time and time of this network of sending of operator poor later then, if and is not set the baseline network time, then the baseline network current time is the network time that operator sends, and difference then is zero.
As shown in Figure 1 and Figure 2, basic procedure of the present invention comprises the steps:
Through channel decoder, business information processing unit, obtain TDT (Time of Day form) and NIT (network information form) information, from TDT/NIT (Time of Day form/network information form) information management unit, inquire program affiliated satellite ID, antenna ID, frequency and polarity, these constitute a network item and (are designated as: Net1), and (time in the TDT is designated as: Time1) current time of obtaining this program stream.
In flash memory, if the network time offset table of setting up is empty, no baseline network item is described, automatic generating network TOT Time Offset Table module then with this Net1 as the baseline network item, be provided with whether the baseline network field is a "Yes", skew is 0 second, and with the current time field that Time1 fills in the baseline network item, then this network item is joined the network time offset table.
If network time, offset table was not empty, need then to judge whether this network item Net1 is present in the network time offset table.
If be present in the network time offset table, need then to judge whether this network item Net1 is baseline network, if baseline network item, current time of upgrading the baseline network item then with this time Time1, if not the baseline network item, then the current time that deducts the baseline network item with this time Time1 calculates a difference, upgrades the skew of network item Net1 with this difference.
If there is no in the network time offset table, then newly-increased this network item Net1 is provided with its skew and deducts the baseline network item current time for Time1 to the network time offset table.
Preserve flash memory when whenever increasing a network item newly, during with the shutdown of assurance system exception, these still exist after restarting.
Normal shutdown is preserved network time and is shown flash memory.
Provide a unified time, i.e. the current time of baseline network item.
When set-top-box opening is play top line, network under this program may not be a baseline network, the stream time that get access to this moment is not the baseline network time just, must derive the time of the baseline network of this moment so at this moment according to the network time offset table of preserving in the flash memory, derivation formula is as follows:
CurrentStandardTime＝CurrentProgramTime-Offset
CurrentStandardTime: baseline network current time
CurrentProgramTime: the current time of current program belonging network
Offset: the last time of preserving in the flash memory this network and baseline network skew
If the program belonging network that start is play is a baseline network, so just use CurrentProgramTime to upgrade the baseline network item current time, the skew of other network item is all constant.
After network time, offset table generated, in reservation system, play a part one each network time correctly is provided, when subscribing program, record in the subscription list is the unified baseline network time, no longer be the time of current playing program, subscribing simultaneously and detecting timer also is to determine that in the unified time of this standard of scanning of not stopping whether reservation is to the time of starting working.
Offset table generated idiographic flow and be divided into two parts many network times of the present invention: network time offset table flow process and upgrade network time offset table flow process during broadcast program is read in start.
As shown in Figure 3, it is specific as follows that network time offset table flow process is read in many network times of the present invention offset table start:
There is not baseline network in step 25, thinks that mistake appears in the network time offset table, need empty, and upgrades network time offset table flow process when forwarding step 26 then to and entering broadcast program;
As shown in Figure 4, to upgrade network time offset table flow process during the offset table broadcast program specific as follows many network times of the present invention
Step 211 is baseline networks, the current time of then using the current time Time1 get access to upgrade baseline network, turns back to step 27 afterwards;
Step 212 is not a baseline network, and then needing according to the baseline network current time is that the correctness sign judges whether the baseline network current time of this moment is correct, if correctly then forward step 215 to, the incorrect step 216 that then forwards to;
Step 214 is not empty, and necessarily exist the baseline network item this moment, then this network item Net1 joined the network time offset table as general network, is offset for this reason that network current time Time1 deducts the baseline network current time, forwards step 217 to.
Later on when getting access to a network time, all from step 27 at every turn.During shutdown, need preservation network time offset table at flash memory.
According to Fig. 4, the setting of User Defined baseline network is described in detail as follows:
Because system is provided with first network automatically under the situation of brand-new set-top-box opening be baseline network, so the function that allows User Defined that baseline network is set need be provided, the user can choose at random the baseline network of a network as oneself, and can carry out the change setting of time, also can not revise the baseline network item, and the current time of only revising baseline network.Illustrate separately with regard to both of these case below:
(1) user has changed baseline network
In such cases, general network is arranged to baseline network, and the skew of revising baseline network is 0, other network item then draws a new skew with respect to this new baseline network according to the skew of master reference network and the offset deviation of new baseline network.
Illustrate:
Network offset table originally is as follows:
Table 2
| Satellite ID | Antenna ID | Frequency | Polarity | Current time | Baseline network whether | Time migration (second) | Skew just/negative |
| 1 | 1 | 45000 | V | 2006-08-04?00:00:00 | Be | 0 | Do not have |
| 2 | 2 | 46000 | H | 2006-08-04?05:00:00 | Not | 5*3600 | + |
| 3 | 3 | 47000 | V | 2006-08-04?03:00:00 | Not | 3*3600 | + |
Annotate: the general network item is not have the current time field, a preservation skew, and it is next clearer for representing to draw here, and can use this value in the following describes.If with No. 2 network item as new baseline network item, then No. 1 network has become general network from baseline network, No. 2 network has become baseline network by general network, if it is 2006-08-04 08:00:00 that the user is provided with the current time of No. 2 networks of new benchmark, this moment its current time of script is 2006-08-04 05:00:00, so No. 2 networks are being positive 3 hours (2006-08-04 08:00:00 deducts 2006-08-04 05:00:00) as the difference field behind the new baseline network.No. 2 new baseline network current time are time 2006-08-04 08:00:00 that the user establishes.
No. 1 network its current time before resetting baseline network is 2006-08-04 00:00:00, and it just is being-8 hours (seeing Table 3) as the skew behind the general network so, and promptly 2006-08-04 00:00:00 deducts 2006-08-04 08:00:00.
The current time of No. 3 networks this moments are 2006-08-04 03:00:00, so he is-5 hours (seeing Table 3) with respect to the new skew of new baseline network, promptly 2006-08-04 03:00:00 deducts 2006-08-04 08:00:00.
New network skew form is as follows:
Table 3
(2) user does not revise baseline network, and has just changed the current time of baseline network
In such cases, only need upgrade the current time field of baseline network item with the new time, simultaneously being deducted the original benchmark current time the new benchmark current time draws a difference, then the difference field of baseline network is added this difference of calculating come the baseline network difference that makes new advances, note it not being offset field, the offset field of baseline network always is 0, other network item all then deducts the new skew that this difference draws the present networks item with the skew of oneself, has so just guaranteed all existing network times and the synchronous of baseline network time newly is set.
Illustrate: if still with No. 1 network item (being made as network number) with satellite ID number as the baseline network item, but changed the current time, such as having made 2006-08-04 02:00:00 into
New network skew form should be as follows:
Table 4
| Satellite ID | Antenna ID | Frequency | Polarity | Current time | Baseline network whether | Time migration (second) | Skew just/negative |
| 1 | 1 | 45000 | V | 2006-08-04?02:00:00 | Be | ?0 | Do not have |
| 2 | 2 | 46000 | H | ? | Not | ?(5-2)＝3*3600 | + |
| 3 | 3 | 47000 | V | ? | Not | ?(3-2)＝1*3600 | + |
Annotate: the difference field of baseline network then be (originally positive 2 hours+increase newly positive 2 hours=positive 4 hours)
As shown in Figure 5, it is specific as follows that User Defined of the present invention is provided with the baseline network time flow:
The skew of step 35, other general networks need be recomputated, and new skew equals original offset and deducts Offset, forwards step 39 to;
Claims (5)
1. the method for an integrated management of multi-network time is characterized in that, it adopts following steps:
A, channel decoder have comprised video, audio frequency and data message with the packet of the program source signal demodulation output Polymera of the heterogeneous networks that receives in the packet of described Polymera;
B, in central processing unit, the business information processing unit is isolated service data information from the data message of Polymera packet;
Time of Day form that comprises in C, the service data information that is separated and network information form information cache are at the Time of Day form/network information form information management unit of random asccess memory;
D, in many network times administration modules, automatic generating network TOT Time Offset Table module is according to Time of Day form and network information form information, generate network time offset table and it is stored in flash memory, realize unified management different network time specifically comprising step:
Step 22, automatic generating network TOT Time Offset Table module reads the network time offset table of preserving in the flash memory;
Step 23 judges that whether the network time offset table is empty, if for idling up to step 26, not for idling up to step 24;
Step 24 judges whether there is the baseline network item in the network time offset table, forwards step 26 to if exist, and does not exist to forward step 25 to;
There is not baseline network in step 25, thinks that mistake appears in the network time offset table, need empty, and forwards step 26 then to;
Step 26 is play a program or is changed platform, waits for the signal of the time that gets access to;
Step 27 gets access to a time T ime1 in the program stream, also obtains the affiliated network information of program simultaneously and constitutes network item Net1, carries out following steps and judges;
Step 28 judges whether network item Net1 is present in the network time offset table, exists to forward step 29 to, does not exist to forward step 210 to;
Step 29, network item Net1 is present in the network time offset table, needs then to judge whether this network item Net1 is baseline network, if baseline network then forwards step 211 to, is not that baseline network then forwards step 212 to;
Step 210, network item Net1 is not present in the network time offset table, needs then to judge that whether the network time offset table is empty, if for sky then forward step 213 to, does not then forward step 214 to for sky;
Step 211 is baseline networks, the current time of then using the current time Time1 get access to upgrade baseline network, returns step 27 afterwards;
Step 212 is not a baseline network, and then needing according to the baseline network current time is that the correctness sign judges whether the baseline network current time of this moment is correct, if correctly then forward step 215 to, the incorrect step 216 that then forwards to;
Step 213, network offset table are empty, then need this network item Net1 that will get access to join the network time offset table as baseline network, and the current time field value is Time1, preserve the network time offset table simultaneously at flash memory, return step 27 afterwards;
Step 214, be not empty, necessarily there is the baseline network item this moment, then this network item Net1 is joined the network time offset table as general network, being offset for this reason, network current time Time1 deducts the baseline network current time, preserve the network time offset table simultaneously at flash memory, return step 27 afterwards;
Step 215, the baseline network current time is correct, then deducts the current time of baseline network with the current time Time1 of the Net1 network item that gets access to, and the difference that obtains is filled into the offset field of this network item Net1, returns step 27 afterwards;
Step 216, the baseline network current time is incorrect, then use the current time Time1 of this network item Net1 to deduct the skew that was kept at this network in the flash memory last time, calculate the current time of baseline network, simultaneously baseline network current time correctness sign is made as "Yes", returns step 27 afterwards.
2. the method for integrated management of multi-network time according to claim 1, it is characterized in that: this method also comprises step e after step D: the user by self-defined network time the offset table module carry out the self-defined baseline network that is provided with, with behind the User Defined network time the offset table information stores at flash memory; Wherein the user by self-defined network time the offset table module carry out the self-defined baseline network that is provided with and comprise the steps:
Step 31 begins to be provided with baseline network;
Step 32 judges whether the baseline network Net1 that is provided with was baseline network in the past, if then forward step 33 to, was not then to forward step 36 to;
Step 33, Net1 was exactly baseline network in the past, and the new baseline network time of calculating and setting and master reference network time poor is designated as Offset;
Step 34, the difference field with this value renewal baseline network will be set to the current time field of baseline network item new fiducial time;
The skew of step 35, other general networks need be recomputated, and new skew equals original offset and deducts Offset, forwards step 39 to;
Step 36, new baseline network was not baseline network in the past, current time when obtaining new baseline network Net1 and being general network, be designated as OldTime1, the new baseline network time is deducted the difference field that OldTime1 fills new baseline network Net1, the new baseline network time of new baseline network Net1 current time for being provided with is set simultaneously;
Step 37, at this moment, the master reference network just becomes general network, and the master reference network current time of network deducts the new baseline network time to offset field for this reason;
Step 38, the skew of other general networks deducts the new baseline network time for the current time of each automatic network;
Step 39 is provided with end.
3. the method for integrated management of multi-network time according to claim 1, it is characterized in that: among the described step D, Time of Day form and network information form packets of information are drawn together satellite ID, antenna ID, frequency, polarity and current time information, network time the offset table parameter information comprise satellite ID, antenna ID, frequency, polarity, current time, whether baseline network and time migration.
4. the method for integrated management of multi-network time according to claim 2, it is characterized in that: described step 31 comprises: the user has changed baseline network.
5. the method for integrated management of multi-network time according to claim 2, it is characterized in that: described step 31 comprises: the user does not change baseline network, but has revised the current time of baseline network.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006101364937A CN101166249B (en) | 2006-10-20 | 2006-10-20 | Method for integrated management of multi-network time |
| HK08107823.0A HK1112688A1 (en) | 2006-10-20 | 2008-07-15 | A method of managing multi-network time uniformly |
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| CN2006101364937A CN101166249B (en) | 2006-10-20 | 2006-10-20 | Method for integrated management of multi-network time |
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| CN101166249A CN101166249A (en) | 2008-04-23 |
| CN101166249B true CN101166249B (en) | 2011-06-15 |
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| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471003A (en) * | 2002-07-25 | 2004-01-28 | 联想(北京)有限公司 | Method for auto-switching play channel based on time table |
| CN1720724A (en) * | 2002-12-04 | 2006-01-11 | 皇家飞利浦电子股份有限公司 | Method of recording a program comprised in a television signal |
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- 2006-10-20 CN CN2006101364937A patent/CN101166249B/en not_active Expired - Fee Related
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1471003A (en) * | 2002-07-25 | 2004-01-28 | 联想(北京)有限公司 | Method for auto-switching play channel based on time table |
| CN1720724A (en) * | 2002-12-04 | 2006-01-11 | 皇家飞利浦电子股份有限公司 | Method of recording a program comprised in a television signal |
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| Publication number | Publication date |
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| HK1112688A1 (en) | 2008-09-12 |
| CN101166249A (en) | 2008-04-23 |
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