CN1327309C - Maintenance method of hand held equipment system time and method of proceeding copyright management using same - Google Patents
Maintenance method of hand held equipment system time and method of proceeding copyright management using same Download PDFInfo
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- CN1327309C CN1327309C CN 200410078272 CN200410078272A CN1327309C CN 1327309 C CN1327309 C CN 1327309C CN 200410078272 CN200410078272 CN 200410078272 CN 200410078272 A CN200410078272 A CN 200410078272A CN 1327309 C CN1327309 C CN 1327309C
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Abstract
The present invention discloses a method for maintaining the system time of a hand-held device, which comprises the steps: a, absolute time and user time are configured in a hand-held device system. B, when a program runs on the hand-held device, the system reads and returns the user time or the absolute time to the program according to the function of the running program. C, when the system executes the time modification operation of an application program, the user time is modified. The present invention simultaneously discloses a DRM (Digital Right Management) method for the hand-held device, and the method utilizes the method for maintaining the system time and uses the absolute time to modify DRM verification. The application of the present invention can surely prevent a user from modifying the absolute time and can reduce DRM software copyright owners' losses brought by the user's randomly time modification.
Description
Technical field
The present invention relates to the maintaining method of handhold device system time and carry out the method for digital copyright management with it.
Background technology
At present, handheld devices such as mobile phone, PDA, handheld device are all safeguarded a system time usually, the system time of a lot of handheld devices can be revised by the user, for example: Wideband Code Division Multiple Access (WCDMA) (WCDMA) mobile phone and global system for mobile communications (GSM) mobile phone, because these two kinds of systems belong to asynchronous system, be that the time of mobile phone and the system time of whole network are nonsynchronous, so the system time of these two kinds of mobile phones normally is provided with by the user and revise.
Referring to Fig. 1, Fig. 1 is the structure and connection diagram of system time device in the prior art handheld device.Wherein, system time device 130 is realized (real time clock circuit band crystal oscillator itself is also arranged) by 131 1 crystal oscillators of a real time clock circuit (abbreviation crystal oscillator) 132 usually, it is by button cell 110 power supplies, and link to each other with the CPU module 140 of handheld device, be provided with or time for reading to real time clock circuit 131 by CPU module 140.Button cell 110 can be by charging circuit 120 chargings.
For system time device 130 shown in Figure 1, the method for user's modification system time is very simple: after CPU module 140 receives the instruction of user's modification system time, and control real time clock circuit 131 modification times.
In these cases, though concerning the user of handheld device, use more flexible, to concerning absolute time has the application of requirement, bigger defective being arranged in digital copyright management (DRM) etc.
For example: a lot of DRM softwares make with the time limited subscriber and are used for protecting its copyright, and common way can may further comprise the steps:
When 1, DRM software was installed, it read current system time, and calculated and the record withdraw from service time.
Read current system time at every turn when 2, DRM software starts, and judge whether to arrive the withdraw from service time,, then directly move this software if far away with this time phase difference; If nearer with this time phase difference, then will arrive by this software term of life of system prompt user, move this software then; If surpassed or just arrive this time, then arrive this software out of service then by this software term of life of system prompt user.
And the user voluntarily under the situation of modification time, such as will then in prompting user software term of life, the modification system time.Like this, DRM software reads current system time when starting once more, and then judgement time does not arrive, and this software of continuation operation, also just prolonged user's service time, even can indefinite use DRM software, this bring very big loss just may for the copyright owner of DRM software.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide the maintaining method of a kind of handhold device system time, and this method can be safeguarded system's absolute time that a user can not revise voluntarily.
Another fundamental purpose of the present invention is to provide a kind of handheld device to carry out the method for digital copyright management, and this method is utilized the maintaining method of said system time, can reduce the modification time loss of bringing for the copyright owner of DRM software voluntarily because of the user.
Be an aspect that achieves the above object, the invention provides the maintaining method of a kind of handhold device system time, this method comprises:
A, an absolute time and a user time are set in handhold device system;
When B, handheld device working procedure, system judges whether working procedure requires the current real time, if then read absolute time and return to program; Otherwise read user time and return to program;
C, when the operation of the modification time of system's executive utility, revise user time.
Wherein, the described method that an absolute time is set and a user time is set of steps A is:
Two real time clock circuits are set in handheld device, are respectively applied for and produce absolute time and user time;
Read the temporal information difference assignment of two real time clock circuits during the handheld device opening initialization and give absolute time variable and user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
The method of the described modification user time of step C can for:
Revise the user time variate-value, and the temporal information of the corresponding real time clock circuit of user time is set according to this value.
The method that steps A is described to be provided with an absolute time and a user time is set also can for:
Handheld device is provided with a real time clock circuit, opens up a space in the nonvolatile memory of handheld device, is used to store the time difference of absolute time and user time;
Read the temporal information assignment of real time clock circuit during the handheld device opening initialization and give the absolute time variable, and deduct time difference with absolute time, the assignment as a result of acquisition is given the user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
The method of described modification user time can for:
Revise the absolute time variate-value, and calculate the time difference of absolute time and user time, this time difference is stored in the nonvolatile memory.
The present invention can set in advance the special-purpose time maintenance program that is used to be provided with and revise absolute time;
Described step C comprises: the executive routine that the time modification operation is done in the current requirement of system is application program or special-purpose time maintenance program, if application program is then revised user time; If special-purpose time maintenance program is then revised absolute time.
The method of described modification absolute time can for:
Revise the absolute time variate-value, and the temporal information of the corresponding real time clock circuit of absolute time is set according to this value.
The method that step B is described to read user time or absolute time can be the currency that reads user time variable or absolute time variable.
Another aspect for achieving the above object the invention provides the method that a kind of handheld device is carried out digital copyright management, and this method comprises:
A, an absolute time and a user time are set in handhold device system, by user application the operation of time all being defaulted as is operation to user time;
When B, handheld device working procedure, if current be DRM software time for reading, then system returns to DRM software with absolute time;
The absolute time that C, DRM software return according to system is when mounted calculated and the record expiration time;
When D, the execution of DRM software, judge whether to expire according to absolute time earlier, if it is expire, then out of service; Otherwise continue operation DRM software.
Steps A is described an absolute time is set and be provided with a user time method can for:
Two real time clock circuits are set in handheld device, are respectively applied for and produce absolute time and user time;
Read the temporal information difference assignment of two real time clock circuits during the handheld device opening initialization and give absolute time variable and user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
The method that steps A is described to be provided with an absolute time and a user time is set also can for:
Handheld device is provided with a real time clock circuit, opens up a space in the nonvolatile memory of handheld device, is used to store the time difference of absolute time and user time;
Read the temporal information assignment of real time clock circuit during the handheld device opening initialization and give the absolute time variable, and deduct time difference with absolute time, the assignment as a result of acquisition is given the user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
This method can set in advance the special-purpose time maintenance program that is used to be provided with and revise absolute time;
When handheld device is dispatched from the factory preceding or keep in repair, use this special use time maintenance program to be provided with or the modification absolute time.
The method of described modification absolute time can for:
Revise the absolute time variate-value, and the temporal information of the corresponding real time clock circuit of absolute time is set according to this value.
As seen from the above technical solutions, the method that system time maintaining method of the present invention and handheld device are carried out digital copyright management, in equipment, safeguard an absolute time, a user time, and, guarantee not revise when the user uses absolute time by the user is defaulted as operation to user time to the operation of time.When carrying out digital copyright management, DRM software verifies with absolute time, thereby reduces the modification time loss of bringing for the copyright owner of DRM software voluntarily because of the user.
Description of drawings
Fig. 1 is the structure and connection diagram of system time device in the prior art handheld device;
Fig. 2 is the structure and connection diagram of the system time device of first preferred embodiment of system time maintaining method of the present invention;
Fig. 3 is the realization flow figure of first preferred embodiment of system time maintaining method of the present invention;
Fig. 4 is the realization flow figure of second preferred embodiment of system time maintaining method of the present invention;
Fig. 5 is the realization flow figure of first preferred embodiment of digital copyright management method of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to accompanying drawing three embodiment that develop simultaneously, the present invention is described in more detail.
The method that system time maintaining method of the present invention and handheld device are carried out digital copyright management, in equipment, safeguard an absolute time, a user time, and, guarantee not revise when the user uses absolute time by the user is defaulted as operation to user time to the operation of time.When carrying out digital copyright management, DRM software verifies with absolute time, thereby reduces the modification time loss of bringing for the copyright owner of DRM software voluntarily because of the user.
System time maintaining method of the present invention has two kinds of embodiments: hardware embodiment and software implementation mode.Below be elaborated for an embodiment respectively.
First preferred embodiment of system time maintaining method of the present invention:
Present embodiment is the hardware embodiment.Referring to Fig. 2, Fig. 2 is the structure and connection diagram of the system time device of first preferred embodiment of system time maintaining method of the present invention.Wherein real-time clock module 230 has comprised two real time clock circuits: real time clock circuit A and real time clock circuit B, their shared crystal oscillators 232.Two real time clock circuits are all powered by button cell 210, and link to each other with the CPU module 240 of handheld device respectively, are provided with or time for reading to real time clock circuit A and real time clock circuit B by CPU module 240.Button cell 210 can be by charging circuit 220 chargings.
In the present embodiment, real time clock circuit A is used for the maintenance system absolute time, and real time clock circuit B is used for maintenance customer's time.The user time that absolute time that real time clock circuit A safeguards and real time clock circuit B safeguard can be when handheld device be dispatched from the factory, be set to identical current time value by the professional with special-purpose time maintenance program, and, guarantee not revise when the user uses absolute time by the user is defaulted as operation to user time to the operation of time.
The button cell technology is a proven technique very, the general button cell and the power consumption of interlock circuit are very little, can keep the time of some months, simultaneously, in the handheld device charging, button cell also can be recharged, to guarantee in time being full of of electric weight, and generally speaking, button cell generally is can not be updated in several years in the normal warranty coverage of handheld device.
Upgrade button cell if desired, can be provided with special-purpose time maintenance program by the professional absolute time and user time are re-set as identical current time value.
Referring to Fig. 3, Fig. 3 is the realization flow figure of first preferred embodiment of system time maintaining method of the present invention.This flow process may further comprise the steps:
Step 301～step 302 is the initialized processes of present embodiment temporal information.
Step 306 judges whether to read user time according to the function of current working procedure, if execution in step 308 then, otherwise execution in step 307.
Whether this step can require the current real time to judge according to current working procedure and whether read user time, if current working procedure does not require the current real time, then judges and reads user time.
Step 307 reads the absolute time variate-value, returns to application program, returns execution in step 304 then.
For example, if current working procedure is the checking of DRM software requirement, because therefore the current real time of DRM software requirement does not read the user time variable, and remove to read the absolute time variable, DRM software judges whether to surpass term of life with this time.
In addition, the handheld device user that has is often gone on business to countries in the world, and every country all to reset by hand one next day/time/minute/, sometimes year after year/month all will reset, and also will be revised as again after coming back home this country's time, it is more loaded down with trivial details to operate. at every turnAfter using this system time maintaining method of present embodiment, can design a simple program, when coming back home, the user only needs to send an operational order by this program, system just gives user time with the value assignment of absolute time variable, and the time value of real time clock circuit B is provided with user time this country's time just this moment according to real time clock circuit A.Do not need like this user manual to day/time/minute/wait one by one and make amendment, simplified operation.
If current working procedure is the program of above-mentioned recovery this country's time, then do not read the variate-value of user time, and remove to read the variate-value of absolute time, and the assignment of user time is revised as the absolute time value, handheld device is shown to the user with amended time value.
Step 308 reads the user time variable and returns to program.
For example, the time showing program of handheld device, alarm clock program, event notification program etc. all read user time and realize.
Step 309 judges whether to want modification time, if execution in step 310 then, otherwise return step 304.
Step 311 is revised the time variable value of user time, and will real time clock circuit B be set by amended user time variate-value.Return execution in step 304.
Second preferred embodiment of system time maintaining method of the present invention:
Present embodiment is the software implementation mode.In the present embodiment, in the nonvolatile memory of handheld device, open up a little space, be exclusively used in the time difference of storage absolute time and user time, this time difference can be positive also can bearing, be to deduct user time with the storage absolute time to obtain, this time difference is defaulted as zero when dispatching from the factory.Like this, just can realize the present invention with system time device shown in Figure 1.Equally, present embodiment also can be set to the current time with special-purpose time maintenance program to real time clock circuit 131 by the professional, and absolute time promptly is set.
Referring to Fig. 1 and Fig. 4, Fig. 4 is the realization flow figure of second preferred embodiment of system time maintaining method of the present invention.This flow process may further comprise the steps:
Step 401～step 403 is the initialized processes of present embodiment temporal information.
Step 407 judges whether to read user time according to the function of current working procedure, if execution in step 409 then, otherwise execution in step 408.
Whether this step can require the current real time to judge according to current working procedure equally and whether read user time, if current working procedure does not require the current real time, then judges and reads user time.
Step 408 reads the absolute time variate-value, returns to application program, returns execution in step 405 then.
For example, if current working procedure is the checking of DRM software requirement, because therefore the current real time of DRM software requirement does not read the user time variable, and remove to read the absolute time variable, DRM software judges whether to surpass term of life with this time.
Equally, after using this system time maintaining method of present embodiment, can design a simple program, when coming back home, the user only needs to send an operational order by this program, system just gives user time with the value assignment of absolute time variable, the user time of this moment is this country's time just, and the mistiming of absolute time and user time be set to zero, store in the nonvolatile memory of handheld device.Like this, do not need the user manual to day/time/minute/wait one by one and make amendment, simplified operation.
If current working procedure is the program of above-mentioned recovery this country's time, then do not read the variate-value of user time, and remove to read the variate-value of absolute time, and the assignment of user time is revised as the absolute time value, handheld device is shown to the user with amended time value.
Step 409 reads the user time variable and returns to program.
For example, the time showing program of handheld device, alarm clock program, event notification program etc. all read user time and realize.
Step 410 judges whether to want modification time, if execution in step 411 then, otherwise return step 405.
Step 412 is revised the time variable value of user time, and deducts amended user time variate-value with current absolute time variate-value, and the time difference of acquisition is stored in the nonvolatile memory of handheld device.Return execution in step 405.
Step 413 is revised the time variable value of absolute time and user time, and they are set to the identical current time, by the absolute time variate-value real time clock circuit 131 are set, and time difference is set to zero, stores in the nonvolatile memory of handheld device.Equally, also can only revise absolute time here,, also will recomputate the time variable value and store in the storer if only revise absolute time.Return execution in step 405.
Digital copyright management method provided by the invention is that a typical case of system time maintaining method of the present invention uses.Below describe for an embodiment.
Referring to Fig. 5, Fig. 5 is the realization flow figure of first preferred embodiment of digital copyright management method of the present invention.In the present embodiment, if adopt above-mentioned Fig. 2, system time maintaining method embodiment illustrated in fig. 3, then the initialization procedure of temporal information can be identical with step 301～302 among Fig. 3.If adopt above-mentioned Fig. 1, system time maintaining method embodiment illustrated in fig. 4, then the initialization procedure of temporal information can be identical with step 401～403 among Fig. 4, repeats no more here.
After the handheld device start, the initialization procedure of elder generation's execution time information, when system moved, absolute time variable and user time variable came software upgrading according to the handhold device system clock respectively.Embodiment illustrated in fig. 5 mainly is the DRM proof procedure, and it may further comprise the steps:
Step 502 judges whether to be DRM software time for reading, if execution in step 503 then, otherwise execution in step 501.
Step 504 judges whether DRM software is being installed, if execution in step 505 back execution in step 506 then, otherwise direct execution in step 506.
Step 507, prompting user DRM software is out of date, and this software out of service.Return step 501.
Step 508 is directly moved DRM software.Return step 501.
User time in the present embodiment can be by user's modification.
By the above embodiments as seen, the method that system time maintaining method of the present invention and handheld device are carried out digital copyright management can guarantee not revise when the user uses absolute time.When carrying out digital copyright management, DRM software verifies with absolute time, can reduce the modification time loss of bringing for the copyright owner of DRM software voluntarily because of the user.
Above-mentioned three embodiment can realize for handheld devices such as mobile phone, PDA, handheld devices.Therefore the above only is the present invention program's preferred embodiment, not in order to limit protection scope of the present invention.
Claims (13)
1, the maintaining method of a kind of handhold device system time is characterized in that, this method may further comprise the steps:
A, an absolute time and a user time are set in handhold device system;
When B, handheld device working procedure, system judges whether working procedure requires the current real time, if then read absolute time and return to program; Otherwise read user time and return to program;
C, when the operation of the modification time of system's executive utility, revise user time.
2, the method for claim 1 is characterized in that, the method that steps A is described to be provided with an absolute time and a user time is set is:
Two real time clock circuits are set in handheld device, are respectively applied for and produce absolute time and user time;
Read the temporal information difference assignment of two real time clock circuits during the handheld device opening initialization and give absolute time variable and user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
3, method as claimed in claim 2 is characterized in that, the method for the described modification user time of step C is:
Revise the user time variate-value, and the temporal information of the corresponding real time clock circuit of user time is set according to this value.
4, the method for claim 1 is characterized in that, the method that steps A is described to be provided with an absolute time and a user time is set is:
Handheld device is provided with a real time clock circuit, opens up a space in the nonvolatile memory of handheld device, is used to store the time difference of absolute time and user time;
Read the temporal information assignment of real time clock circuit during the handheld device opening initialization and give the absolute time variable, and deduct time difference with absolute time, the assignment as a result of acquisition is given the user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
5, method as claimed in claim 4 is characterized in that, the method for described modification user time is:
Revise the absolute time variate-value, and calculate the time difference of absolute time and user time, this time difference is stored in the nonvolatile memory.
6, as claim 2,3,4 or 5 described methods, it is characterized in that: set in advance the special-purpose time maintenance program that is used to be provided with and revise absolute time;
Described step C comprises: the executive routine that the time modification operation is done in the current requirement of system is application program or special-purpose time maintenance program, if application program is then revised user time; If special-purpose time maintenance program is then revised absolute time.
7, method as claimed in claim 6 is characterized in that, the method for described modification absolute time is:
Revise the absolute time variate-value, and the temporal information of the corresponding real time clock circuit of absolute time is set according to this value.
As claim 2 or 4 described methods, it is characterized in that 8, the described method that reads user time or absolute time of step B is: the currency that reads user time variable or absolute time variable.
9, a kind of handheld device is carried out the method for digital copyright management, it is characterized in that, this method may further comprise the steps:
A, an absolute time and a user time are set in handhold device system, by user application the operation of time all being defaulted as is operation to user time;
When B, handheld device working procedure, if current be the drm software time for reading, then system returns to drm software with absolute time;
The absolute time that C, drm software are returned according to system is when mounted calculated and the record expiration time;
When D, drm software execution, judge whether to expire according to absolute time earlier, if it is expire, then out of service; Otherwise continue the operation drm software.
10, method as claimed in claim 9 is characterized in that, the method that steps A is described to be provided with an absolute time and a user time is set is:
Two real time clock circuits are set in handheld device, are respectively applied for and produce absolute time and user time;
Read the temporal information difference assignment of two real time clock circuits during the handheld device opening initialization and give absolute time variable and user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
11, method as claimed in claim 10, the method that steps A is described to be provided with an absolute time and a user time is set is:
Handheld device is provided with a real time clock circuit, opens up a space in the nonvolatile memory of handheld device, is used to store the time difference of absolute time and user time;
Read the temporal information assignment of real time clock circuit during the handheld device opening initialization and give the absolute time variable, and deduct time difference with absolute time, the assignment as a result of acquisition is given the user time variable;
Described absolute time variable and user time variable come software upgrading according to system clock when equipment operation.
12, as claim 10 or 11 described methods, it is characterized in that: set in advance the special-purpose time maintenance program that is used to be provided with and revise absolute time;
When handheld device is dispatched from the factory preceding or keep in repair, use this special use time maintenance program to be provided with or the modification absolute time.
13, method as claimed in claim 12 is characterized in that, the method for described modification absolute time is:
Revise the absolute time variate-value, and the temporal information of the corresponding real time clock circuit of absolute time is set according to this value.
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| CN 200410078272 CN1327309C (en) | 2004-09-21 | 2004-09-21 | Maintenance method of hand held equipment system time and method of proceeding copyright management using same |
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| CN 200410078272 CN1327309C (en) | 2004-09-21 | 2004-09-21 | Maintenance method of hand held equipment system time and method of proceeding copyright management using same |
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| CN1327309C true CN1327309C (en) | 2007-07-18 |
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| KR100869945B1 (en) * | 2006-11-03 | 2008-11-24 | 삼성전자주식회사 | Enhanced digital rights management system and contents tereof, potable device using the same |
| CN102999734B (en) * | 2011-09-19 | 2015-12-02 | 比亚迪股份有限公司 | A kind of computing machine term of life limits method and system |
| CN103718186B (en) * | 2013-09-05 | 2015-07-08 | 华为技术有限公司 | Storage system and data operation request treatment method |
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