Summary of the invention
In order to make IPTV user can in time obtain the Email that its any E-mail address receives in the IPTV network, the embodiment of the invention provides a kind of method to IPTV terminal push email information, and described method comprises:
Obtain whole E-mail addresses of IPTV user binding;
Obtain each mailbox server at place, described whole E-mail address;
Described whole E-mail addresses are divided into groups by its place mailbox server, be divided at least one E-mail address group;
Whether the E-mail address of determining described IPTV user binding upgrades, and if yes, upgrades described whole E-mail addresses group according to the E-mail address that upgrades;
Each mailbox server of the whole E-mail address of poll group correspondence inquires about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtains described new mail;
Generate the mail notification of described new mail;
Send described mail notification to the IPTV terminal of described IPTV user binding;
Wherein, the mail notification of the described new mail of described generation comprises:
Obtain the filtrating mail condition that described IPTV user arranges;
When described new mail satisfies described filtrating mail condition, obtain online communication state, mail reception rule and the reading ability of the IPTV terminal of described IPTV user binding;
When the IPTV of described IPTV user binding terminal is in online communication state, described new mail and meets the mail reception rule of described IPTV terminal, according to the reading ability of described IPTV terminal, generate the link of obtaining of Mail Contents that described IPTV terminal can read;
Generation comprises the described mail notification that obtains the new mail of link.
The embodiment of the invention provides a kind of device to IPTV terminal push email information, and described device comprises:
The E-mail address acquisition module is for the whole E-mail addresses that obtain the IPTV user binding;
The mailbox server acquiring unit is used for obtaining each mailbox server at place, described whole E-mail address;
The mailbox server grouped element is used for described whole E-mail addresses are divided into groups by its place mailbox server, is divided at least one E-mail address group;
E-mail address group update module is used for determining whether the E-mail address of described IPTV user binding upgrades, and if yes, upgrades described whole E-mail addresses group according to the E-mail address that upgrades;
The mailbox server poll units is used for each mailbox server of the whole E-mail address of poll group correspondence, inquires about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtains described new mail;
The mail notification generation module is for the mail notification that generates described new mail;
The mail notification sending module is used for sending described mail notification to the IPTV terminal of described IPTV user binding;
Wherein, described mail notification generation module comprises:
Filtrating mail condition acquiring unit is used for obtaining the filtrating mail condition that described IPTV user arranges;
Terminal is described acquiring unit, is used for obtaining online communication state, mail reception rule and the reading ability of the IPTV terminal of described IPTV user binding when described new mail satisfies described filtrating mail condition;
E-mail chains is delivered a child into the unit, be used for meeting the mail reception of described IPTV terminal when regular when the IPTV of described IPTV user binding terminal is in online communication state, described new mail, according to the reading ability of described IPTV terminal, generate the link of obtaining of Mail Contents that described IPTV terminal can read;
The mail notification generation unit is used for generation and comprises the described mail notification that obtains the new mail of link.
The embodiment of the invention provides a kind of system to IPTV terminal push email information, and described system comprises device and the IPTV terminal of push email information,
The device of described push email information, be used for obtaining whole E-mail addresses of IPTV user binding, obtain each mailbox server at place, described whole E-mail address, described whole E-mail addresses are divided into groups by its place mailbox server, be divided at least one E-mail address group; Whether the E-mail address of determining described IPTV user binding upgrades, and if yes, upgrades described whole E-mail addresses group according to the E-mail address that upgrades; Each mailbox server of the whole E-mail address of poll group correspondence inquires about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtains described new mail; Generate the mail notification of described new mail; Send described mail notification to the IPTV terminal of described IPTV user binding, wherein, the mail notification of the described new mail of described generation, comprise: obtain the filtrating mail condition that described IPTV user arranges, when described new mail satisfies described filtrating mail condition, obtain the online communication state of the IPTV terminal of described IPTV user binding, mail reception rule and reading ability, when the IPTV of described IPTV user binding terminal is in the online communication state, when described new mail meets the mail reception rule of described IPTV terminal, reading ability according to described IPTV terminal, generate the link of obtaining of Mail Contents that described IPTV terminal can read, generate and comprise the described mail notification that obtains the new mail of link;
Described IPTV terminal is used for receiving described mail notification, obtains described new mail according to described mail notification.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: the mailbox server at the place, E-mail address by obtaining the poll user binding, then obtain this new mail when having new mail to arrive when this E-mail address is current, and send mail notification to the IPTV terminal, make described user obtain described new mail according to described mail notification, make IPTV user can in time obtain the Email that its any E-mail address receives in the IPTV network, the electronic mail service that has further increased IPTV user is experienced.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Embodiment 1
As shown in Figure 1, the embodiment of the invention provides a kind of method to IPTV terminal push email information, and this method comprises:
S101: the whole E-mail addresses that obtain all IPTV user bindings;
S102: each mailbox server of obtaining place, described whole E-mail address;
S103: described whole E-mail addresses are divided into groups by its place mailbox server, be divided at least one E-mail address group;
S104: each mailbox server of the whole E-mail address of poll group correspondence, inquire about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtain described new mail;
S105: the mail notification that generates described new mail;
S106: send described mail notification to the IPTV terminal of described IPTV user binding.
Need to prove that the executive agent of S101 to S106 is the device that has to IPTV terminal push email informational function, for example, this device can be the IPTV server.
Present embodiment, the mailbox server at the place, E-mail address by the poll user binding, then obtain this new mail when having new mail to arrive when this E-mail address is current, and send mail notification to the IPTV terminal, make described user obtain described new mail according to described mail notification, make IPTV user can in time obtain the Email that its any E-mail address receives in the IPTV network, the electronic mail service that has further increased IPTV user is experienced.
Embodiment 2
As shown in Figure 2, it is a kind of for the method for push email information to the IPTV terminal that the embodiment of the invention provides, and comprising:
S201: receive the registration request of IPTV user's IPTV electronic mail service, obtain the configuration information of described IPTV user's IPTV electronic mail service;
Concrete, IPTV user opens the IPTV electronic mail service by the registration request that sends the IPTV electronic mail service.The configuration information that comprises its electronic mail service in this registration request;
The configuration information of electronic mail service comprises the E-mail address of its binding, the IPTV terminal of its binding at least.Preferably, also can comprise in this configuration information: the mail reception rule of the IPTV terminal of filtrating mail condition, its binding with and the reading ability of IPTV terminal of binding.
Wherein, the E-mail address of binding is the E-mail address of the reception mail of user's setting, and the E-mail address of this binding can be for a plurality of.Concrete, IPTV user selects its hope to obtain the E-mail address of Email in the E-mail address that it has, and this E-mail address is set to the binding E-mail address of its IPTV electronic mail service, the mailbox server at this place, E-mail address can be existing IPTV mailbox server, also can be the arbitrary mailbox server in the Internet.
The filtrating mail condition arranges for the user, behind the mail in receiving the E-mail address of binding, this mail is filtered, if this mail does not satisfy this filtercondition, does not then point out the user to receive this mail.Preferably, the user can arrange different overanxious conditions for each E-mail address of its binding.For example, the configuration information of IPTV user user1 mail service can for: the binding E-mail address of its IPTV electronic mail service is: user1@domain_a; User1@domain_b; The filtrating mail condition of its setting is for rejecting the mail that contains advertising message, and the IPTV terminal of its binding is mobile phone.
The IPTV terminal of binding for user setting after by mail arrives, can receive the IPTV terminal of mail notification, the IPTV terminal of this binding can be for a plurality of.Preferably, the IPTV terminal of this binding can be TV, mobile phone or computer.The terminal iidentification of the IPTV terminal of its binding, preferred, the IPTV terminal of user binding is distinguished with the unique identifier UEID of this IPTV terminal.
The reading ability of IPTV terminal can the reading file type for this terminal, as the text of html form, the video file of 3gp form etc.Preferably, the reading ability of this IPTV terminal can additional registration information initiatively in.
For example, receive five IPTV users and send the registration request of IPTV electronic mail service, comprise the end message of IPTV terminal of E-mail address, mailbox filtercondition, the user binding of user binding in this registration request, then this user and configuration information mapping relations table thereof can be as shown in table 1:
Table 1
S202: the whole E-mail addresses that obtain the IPTV user binding.
S203: obtain each mailbox server at place, whole E-mail address, should divide into groups by its place mailbox server whole E-mail addresses, be divided at least one E-mail address group;
Wherein, the mailbox server at place, E-mail address is identical in same group.
Concrete, obtain each mailbox server at the place, whole E-mail address of user binding, the E-mail address of user binding is divided into groups by its place mailbox server, generate the E-mail address group, the Email that mailbox server is identical is divided into one group.
For example, the E-mail address of IPTV user user1 binding is: user1@domain_a, user1@domain_b, and the mailbox server of the E-mail address of this user binding that then gets access to is domain_a, domain_b; The E-mail address of IPTV user user2 binding is user2@domain_a, user2@domain_n, and the mailbox server of the E-mail address of this user binding that then gets access to is domain_a, domain_n.
As shown in table 2, this E-mail address Groups List is:
Preferably, obtain IPTV user's online state by the heartbeat response message, according to this E-mail address group of IPTV user's online state real-time update.
S204: each mailbox server at group place, the whole E-mail address of poll, inquire about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtain described new mail.
Concrete, because the mailbox server at each place, E-mail address is identical in the E-mail address group, so the mailbox server of arbitrary E-mail address is the mailbox server of this group in the E-mail address group.Obtain the mailbox server of each E-mail address group, generate the mailbox server polling list, by the mailbox server in this mailbox polling list of extranets poll.Further concrete, whether the E-mail address of inquiring about one by one in the E-mail address group of mailbox server correspondence of current accessed has new mail to arrive, if having, then obtains the new mail in this E-mail address.Preferably, can back up the new mail that this gets access to by alternate device, when the current storage of this new mail that gets access to was lost efficacy, can obtain this new mail by visiting this alternate device.
Preferably, can obtain this user-dependent electronic mail service configuration information with the GET order of XCAP agreement by acting on behalf of net, generate the mailbox server polling list voluntarily by proxy gateway, proxy gateway can also upgrade the mailbox server polling list according to the update mode of E-mail address group.
For example, as shown in table 2, bound two mailboxes that need poll under user 1 the IPTV number of the account, the email address domain name is respectively domain name a and domain name b, and these two mailboxes adhere to the mailbox server that two classes need poll separately in table.IPTV user is numerous, and mailbox server quantity is compared with regard to much less in the Internet.What the user may mainly use is exactly the widely used mailbox server of several classes, as Gmail, Yahoo, Hotmail etc.
In polling procedure, a plurality of subscriber mailboxs under the same mailbox server are carried out a mail polling operation, the problem of the different mailbox server of the continuous handover access of needs in the time of can avoiding initiating the mail polling request according to the user.In the proxy gateway course of normal operation, the electronic mail service that the mail poll module in the proxy gateway receives IPTV in real time starts or the termination request, upgrades inner mail polling list.
S205: the new mail that receives IPTV user's transmission obtains request;
Concrete, the new mail that receives IPTV user's transmission obtains request, judges whether this user is IPTV mail service user, if then return the request successful information.
S206: obtain the filtrating mail condition that described IPTV user arranges;
When described new mail satisfies described filtrating mail rule, carry out S207;
Concrete, the configuration information of the mail service by inquiring user obtains the filtrating mail condition that the user arranges, whether the e-mail messages of judging described new mail satisfies this filtrating mail rule, the filtrating mail condition that arranges as the user is the mail that rejection has advertising message, then inquire about the mail matter topics in the e-mail messages, the keyword in the text etc. and whether have advertising message, if then do not generate described mail notification.
The mail that receives is carried out overanxious by the filtrating mail condition is set in the prior art, belong to prior art thereby be filled into ineligible mail, concrete grammar repeats no more herein.
S207: the online communication state, mail reception rule and the reading ability that obtain the IPTV terminal of described IPTV user binding, when the IPTV of described IPTV user binding terminal is in the online communication state, when described new mail meets the mail reception rule of described IPTV terminal, carries out S208;
Concrete, when the IPTV of user binding terminal is online: the mail reception rule of obtaining the IPTV terminal by the mail service configuration information of inquiring user.The user can arrange different mail reception rules for the different IP TV terminal of its binding, for example, user binding two ITPV terminals: mobile phone and TV, and television terminal is set filters the Email that the outbox people is bob@domian2.com, when bob@domian2.com sends mail to the user, the mail notification to this mail that the mobile phone of user binding receives, the TV of user binding does not then receive this mail notification.
When the IPTV of user binding terminal is not online, optional, then do not send the mail notification that new mail arrives to the user, this time new mail arrives and points out flow process to finish.When this user binding IPTV terminal is online, then send the notice that new mail arrives to this online IPTV terminal again.
S208: according to the reading ability of described IPTV terminal, generate the link of obtaining of Mail Contents that described IPTV terminal can read;
Concrete, obtain the Mail Contents of new mail, judge whether the IPTV terminal of user binding can read this Mail Contents, if can, then generating the access links that this can received Mail Contents, this access links can be that the cache access address links.When the IPTV of user binding terminal when being a plurality of, can generate the Mail Contents link of this terminal according to the reading ability of different terminals.
For example, the IPTV terminal of user binding is mobile phone, computer, TV.Wherein, mobile phone can be read the file except mail.rar; Computer can be read the file that the file, TV of all forms can the read text form, then when Mail Contents package body text mail.txt, the text picture mail.jpg of new mail, positive text video mail.avi and annex mail.rar, then
Mail Contents access links towards the generation of mobile phone is:
The cache access chained address of the body text mail.txt that generates is:
gateway_cache:\folder1\IPTV_new_mail\mail.txt;
The cache access chained address of text picture mail.jpg is:
gateway_cache:\folder1\IPTV_new_mail\mail.jpg;
The cache access chained address of positive text video mail.avi is:
gateway_cache:\folder1\IPTV_new_mail\mail.avi;
The Mail Contents access links that generates towards computer is:
The cache access chained address of the body text mail.txt that generates is:
gateway_cache:\folder1\IPTV_new_mail\mail.txt;
The cache access chained address of text picture mail.jpg is:
gateway_cache:\folder1\IPTV_new_mail\mail.jPg;
The cache access chained address of positive text video mail.avi is:
gateway_cache:\folder1\IPTV_new_mail\mail.avi;
The cache access chained address of annex mail.rar file is:
gateway_cache:\folder1\IPTV_new_mail\mail.rar。
The Mail Contents access links that generates towards TV is:
The cache access chained address of the body text mail.txt that generates is:
gateway_cache:\folder1\IPTV_new_mail\mail.txt;
S209: generation comprises the described mail notification that obtains the new mail of link.
Concrete, the mail notification of this new mail can comprise: the keyword in sender's email address, addressee information, mail matter topics or the text, mail size, mail reception time, whether accessory information etc. is arranged.Preferably, can generate the email notification message of corresponding Session Initiation Protocol according to the HTTP demand signalling.As shown in Table 3, this mail notification can comprise following information:
Table three:
S210: the mail notification that sends this new mail to the IPTV terminal of ITPV user binding;
Preferably, form that can SMS (Short Message Service, short message), MMS (Multi Media Messaging, Multimedia Message) IM (Instant Messaging, instant message) sends mail notification to the user.
When the IPTV of user binding terminal is that mobile phone can move the use of access standard based on the IPTV business of IMS by 3GPP.
The S211:ITPV terminal shows the mail notification of this new mail to the user;
S212:ITPV user sends the requests for content of obtaining this new mail;
Concrete, the user obtains link by the Mail Contents in the mail notification of clicking the demonstration of ITPV terminal, obtains the content of this new mail;
S213: obtain the new mail content requests according to what ITPV user sent, obtain the Mail Contents of this new mail;
Concrete, the Mail Contents that sends according to the user obtains link, visits the memory location of this Mail Contents, obtains the Mail Contents of response, and this Mail Contents is sent to the user.
Preferably, when lost efficacy in the memory location of this Mail Contents, then visit the alternate device of this new mail, obtain this new mail, thereby obtain the Mail Contents of this new mail.
S214: send the Mail Contents of this new mail to corresponding IPTV terminal;
Concrete, obtain the new mail content requests according to what the user sent, obtain and send this and obtain the IPTV terminal iidentification of request, this Mail Contents is sent to the IPTV terminal of respective identification.
Need to prove that the executive agent of S201 to S214 is the device that has to IPTV terminal push email informational function, this device is specifically as follows the IPTV server.
Preferably, can send success receipt by the user mail content is set, when mail sends successfully, after mailbox server returned success information, the respective mail in the proxy gateway buffer memory can be deleted; If mail sends failure, after mailbox server was returned failure information, proxy gateway continued to deliver Email to mailbox server, asks mailbox server to carry out the mail transmit operation again.In this course, proxy gateway is set repeats to deliver and ask mailbox server to send the number of times of mail, can solve under IPTV network and the not smooth situation of internet communication, directly ask the Internet mailbox server to send the problem that mail repeats to fail from terminal.
Embodiment 3
As shown in Figure 3, the embodiment of the invention provides a kind of method to IPTV terminal push email information, may further comprise the steps:
S201~202 among S301~302 and the embodiment 2, S308~S317 is identical with S205~S214 among the embodiment 2, and concrete steps repeat no more referring to embodiment 2 herein
The S303:IPTV terminal is revised request to the service configuration information that the IPTV server sends;
S304:IPTV server response described request sends the electronic mail service configuration information link of described IPTV terminal, makes described IPTV terminal revise described configuration information according to described electronic mail service configuration information link;
The S305:IPTV server receives amended service configuration information;
S306: whether the E-mail address of determining described IPTV user binding upgrades, and if yes, upgrades above-mentioned E-mail address group according to the E-mail address that upgrades;
S307: each mailbox server at the group place, whole E-mail address that poll upgrades, inquire about whether E-mail address in whole E-mail addresses group of described renewal is current has new mail to arrive, if having, then obtain described new mail.
Need to prove: the E-mail address of IPTV user binding takes place to replace or increases or reduce, the number generation respective change that may cause the E-mail address group that has been divided into, for example, increased an E-mail address newly, the mailbox server at place, E-mail address that should be newly-increased, and this mailbox server is in the E-mail address group that has been divided into, and the quantity of the E-mail address group after upgrading has so just increased by one.
Concrete, the service configuration information after the reception user's modification according to the modification of IPTV user to its configuration information, upgrades IPTV user's electronic mail service configuration information.
Preferably, but the IPTV terminal that relates in the embodiment of the invention one to three can insert by the IPTV supervising the network, when the IPTV terminal, as mobile phone, PDA, hand held television, but net book etc. can not directly insert the individual subscriber terminal of IPTV supervising the network, also can pass through other network insertions, be the wireless network of main body as existing mobile communications network, at this moment, require this wireless terminal should possess support OMA (Object Management Architecture, object management architecture) and EMN (E-mail Notification, email notification) standard, and POP (Post Office Protocol, post office protocol), IMAP (Internet Mail Access Protocol, interactive email access agreement), the terminal software of SMTP (Simple Mail Transfer Protocol, Simple Mail Transfer protocol).Concrete, but those skilled in the art are easy to realization with different IP TV terminal accessing IP TV supervising the network, repeat no more herein.
Embodiment 4,
As shown in Figure 4, the embodiment of the invention provides a kind of device to IPTV terminal push email information,
This device comprises:
E-mail address acquisition module 401 is for the whole E-mail addresses that obtain all IPTV user bindings;
Mailbox server acquisition module 402 is used for obtaining each mailbox server at place, described whole E-mail address;
Mailbox server grouping module 403 is used for described whole E-mail addresses are divided into groups by its place mailbox server, is divided at least one E-mail address group;
Mailbox server poll module 404 is used for each mailbox server of the whole E-mail address of poll group correspondence, inquires about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtains described new mail;
Mail notification generation module 405 is for the mail notification that generates this new mail;
Mail notification sending module 406 is used for sending this mail notification to the IPTV terminal of this IPTV user binding.
Present embodiment, the mailbox server at the place, E-mail address by the poll user binding, then obtain this new mail when having new mail to arrive when this E-mail address is current, and send mail notification to the IPTV terminal, make this user obtain this new mail according to this mail notification, make IPTV user can in time obtain the Email that its any E-mail address receives in the IPTV network, the electronic mail service that has further increased IPTV user is experienced.
Embodiment 5
As shown in Figure 5, the embodiment of the invention provides a kind of device to IPTV terminal push email information, and this device comprises:
E-mail address acquisition module 401 is for the whole E-mail addresses that obtain the IPTV user binding;
Mailbox server acquisition module 402 is used for obtaining each mailbox server at place, described whole E-mail address;
Mailbox server grouping module 403 is used for described whole E-mail addresses are divided into groups by its place mailbox server, is divided at least one E-mail address group;
Mailbox server poll module 404 is used for each mailbox server of the whole E-mail address of poll group correspondence, inquires about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtains described new mail;
Mail notification generation module 405 is for the mail notification that generates this new mail;
Mail notification sending module 406 is used for sending this mail notification to the IPTV terminal of this IPTV user binding.
E-mail address group update module 407 is used for determining whether the E-mail address of described IPTV user binding upgrades, and if yes, upgrades described whole E-mail addresses group according to the E-mail address that upgrades.
Wherein, this mail notification generation module 405 specifically comprises:
Filtrating mail condition acquiring unit 4051 is used for obtaining the filtrating mail condition that this IPTV user arranges;
Terminal is described acquiring unit 4052, is used for obtaining online communication state, mail reception rule and the reading ability of the IPTV terminal of this IPTV user binding when this new mail satisfies this filtrating mail condition;
E-mail chains is delivered a child into unit 4053, be used for meeting the mail reception of this IPTV terminal when regular when the IPTV of this IPTV user binding terminal is in online communication state, this new mail, according to the reading ability of this IPTV terminal, generate the link of obtaining of Mail Contents that this IPTV terminal can read;
Mail notification generation unit 4054 is used for generation and comprises the mail notification that this obtains the new mail of link.
Registration request receiver module 408 is used for the registration request of reception IPTV user's electronic mail service;
Configuration information acquisition module 409, for the configuration information of the IPTV electronic mail service that obtains this IPTV user, this configuration information comprises the E-mail address that needs poll of this IPTV user binding at least;
Mapping relations are set up module 410, are used for setting up the mapping relations of this IPTV user and this configuration information.
Present embodiment, the mailbox server at the place, E-mail address by the poll user binding, then obtain this new mail when having new mail to arrive when this E-mail address is current, and send mail notification to the IPTV terminal, make described user obtain described new mail according to described mail notification, make IPTV user can in time obtain the Email that its any E-mail address receives in the IPTV network, the electronic mail service that has further increased IPTV user is experienced.
Embodiment 6,
As shown in Figure 6, the embodiment of the invention provides a kind of system to IPTV terminal push email information, and described system comprises device 501 and the IPTV terminal 502 of push email information:
The device 501 of described push email information, be used for obtaining whole E-mail addresses of IPTV user binding, obtain each mailbox server at place, described whole E-mail address, described whole E-mail addresses are divided into groups by its place mailbox server, be divided at least one E-mail address group; Each mailbox server of the whole E-mail address of poll group correspondence inquires about whether E-mail address in described whole E-mail addresses group is current has new mail to arrive, if having, then obtains described new mail; Generate the mail notification of described new mail; Send described mail notification to the IPTV terminal of described IPTV user binding.
Described IPTV terminal 502 is used for receiving described mail notification, obtains described new mail according to described mail notification.
Optionally, described IPTV terminal comprises: mobile phone, computer or TV.
Present embodiment, the mailbox server at the place, E-mail address by the poll user binding, then obtain this new mail when having new mail to arrive when this E-mail address is current, and send mail notification to the IPTV terminal, make described user obtain described new mail according to described mail notification, make IPTV user can in time obtain the Email that its any E-mail address receives in the IPTV network, the electronic mail service that has further increased IPTV user is experienced.
All or part of content in the technical scheme that above embodiment provides can realize that its software program is stored in the storage medium that can read by software programming, storage medium for example: the hard disk in the computer, CD or floppy disk.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.