CN102045388A - Online reading device and method - Google Patents

Online reading device and method Download PDF

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Publication number
CN102045388A
CN102045388A CN201010558812XA CN201010558812A CN102045388A CN 102045388 A CN102045388 A CN 102045388A CN 201010558812X A CN201010558812X A CN 201010558812XA CN 201010558812 A CN201010558812 A CN 201010558812A CN 102045388 A CN102045388 A CN 102045388A
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xml
reading
book
real time
server
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CN102045388B (en
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秦建辉
吕金鉴
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Hanwang Technology Co Ltd
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Hanwang Technology Co Ltd
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Abstract

The invention discloses online reading device and method, belonging to the field of electronic reading. The method comprises the following steps of: sending a reading request to an electronic book server by a reading terminal through a network, wherein the reading request comprises identifications of electronic books to be read and a page display specification of the reading terminal; searching and obtaining reading contents from an electronic book database according to the identifications of the electronic books, re-composing and dividing the reading contents into a plurality of XML (Extensive Markup Language) files according to the page display specification, and paging each XML file into more than one XML data slot; packing the XML data slots and sequentially sending the XML data slots to the reading terminal; and recombining and sorting the received data packets by the reading terminal, and sequentially analyzing and displaying the content in each page of the XML files. By adopting the method and the system of the invention, a user can read all the needed contents in real time without waiting until the whole electronic book file is downloaded completely.

Description

Online reading device and online reading method
 
Technical field
The present invention relates to the electronic reading field, more specifically, particularly relate to a kind of implement device and method of online reading.
 
Background technology
General conventional book volume is big and heavy, for the reader who takes normal reading and often travel, is very inconvenient, not only take up space, and be difficult for permanent collection, people are for reading, thirst for new reading kenel occurring, the reading kenel of a kind of e-book by name (E-Book) has produced thereupon.
E-book is in the e-file mode with book contents, deposit in electronic installation platform (as: computer, palmtop PC, PDA, electronic reader etc.), and when reading, be shown in the screen of electronic installation platform in mode page by page, this kind is stored in the reading method that the electronic installation platform is read in the e-file mode, make easier properly long-term collection of e-book and keeping, and the user only need carry a palmtop PC, PDA or E-book reader collocation ocr software when going out, the memory card that stores electronic book data by grafting can be read.And for the books in the newly-increased e-book, generally all see through network access and download e-book, the user needs dialing netwok access voluntarily, and is connected to and provides the network address that e-book is downloaded, and wants the e-book of reading by the user according to the personal interest selection again, downloads.At present, the data volume of e-book is all bigger, when the user downloads to it on this machine by the internet, except pending datas such as needs spended time are downloaded fully; During reading, also needing to call corresponding ocr software according to the file format of data download opens it and just can be shown on the device screen, for the limited portable electron device platform of hardware condition, when reading bigger electronic book documentary, its speed also can decrease, and then influences user's reading experience.
 
Summary of the invention
In order to solve defective and the deficiency that aforementioned prior art exists, the present invention proposes and a kind ofly needn't wait until that whole electronic book documentary is downloaded and finish the device and method that just can read required content in real time.Main purpose of the present invention is to provide a kind of online reading device, by a reading terminal, server is sent the request of reading, and by the electronic book data storehouse of server inside according to the request of reading, find out corresponding reading content, and every page of the books that will read change shelves and export reading terminal to, that is needn't wait until that whole electronic book documentary is downloaded to finish and can read required content in real time, and reading terminal does not need to install other ocr softwares simultaneously.
Another object of the present invention is to provide a kind of online reading device, by reading terminal server is sent the request of reading, and by the electronic book data storehouse of server inside according to the request of reading, and each page or leaf of the e-book that will read changes and grade exports reading terminal to, the e-book content need not preserved on reading terminal and can read, and has reduced the requirement to the reading terminal memory headroom.
According to above-mentioned purpose, the invention provides a kind of online reading device, reduce the requirement of downloading required time and reducing memory headroom, described online reading device comprises server and reading terminal, wherein server comprises control module, electronic book data storehouse, type-setting module and sending module, and reading terminal comprises read module, receiver module and display module.Control module is used to receive the reading request that the user sends by reading terminal, and sends the RTP packet to reading terminal, and the request of reading comprises that the e-book that will read identifies and the page of reading terminal shows specification.The electronic book data storehouse is used to deposit a plurality of e-book, and each e-book has e-book sign and the reading content corresponding with it.Type-setting module is connected to control module and electronic book data storehouse, reading request according to the control module reception, in the electronic book data storehouse, search and read the e-book sign that request is complementary, and the reading content that the e-book sign is corresponding shows according to the page of reading terminal that specification is set type again and becomes a plurality of XML files with paging.Sending module is connected to control module and type-setting module, each XML file is split as the XML data slot that meets the predetermined value size more than, and according to RTP, the XML data slot that each XML file is split adds control information formation RTP packet and sends.Read module is as reading the interface of asking to be sent to server, the response message of while reception server feedback.Receiver module is connected to read module, the RTP packet that carries control information that reception server sends, and the RTP packet is put into one wrap buffering area, according to control information combination ordering, the XML data slot that splits is merged into a complete XML file, and form a plurality of XML files in regular turn.Display module is connected to read module and receiver module, and the XML file that is used for that receiver module is passed over is put into one and resolved buffering area, resolves the back and shows.
The present invention then provides a kind of online reading method of downloading required time and reducing the requirement of memory headroom that reduces, and includes the following step:
(1) read request by network to the server transmission by reading terminal, the request of reading comprises that the e-book that will read identifies and the page of reading terminal shows specification;
(2) server receives the request of reading, searches corresponding e-book and obtain its corresponding reading content from the electronic book data storehouse according to the e-book sign, shows that according to the page specification is set type content to be read again and paging is a plurality of XML files;
(3) server is split as each XML file the XML data slot that meets the predetermined value size more than, and according to RTP, the XML data slot that each XML file is split adds that control information forms the RTP packet and is sent to reading terminal;
(4) the RTP packet that carries control information of reading terminal reception server transmission, and the RTP packet is put into one wrap buffering area, according to control information combination ordering, the XML data slot that splits is merged into a complete XML file, and form a plurality of XML files in regular turn;
(5) reading terminal is put into one with a plurality of XML files and is resolved buffering area, resolves, and takes out in regular turn and shown.
Via online reading apparatus and method provided by the present invention, can allow the user needn't wait until that whole electronic book documentary is downloaded just to finish and to read required content in real time, and reduced requirement to the reading terminal memory headroom, and download complete without pending datas such as spended times, when reading bigger electronic book documentary, accelerated loading velocity, promoted user's reading experience, moreover, through the document behind the server commentaries on classics shelves, need not reading terminal other ocr softwares are installed, directly can read, provide convenience to the user.
 
Description of drawings
The reader will become apparent various aspects of the present invention after the reference accompanying drawing is read the specific embodiment of the present invention.Wherein:
Fig. 1 is a system configuration schematic diagram of the present invention;
Fig. 2 is an online reading method flow schematic diagram of the present invention;
Fig. 3 is the RTP data packet format schematic diagram of online reading device of the present invention;
Fig. 4 is an online reading schematic representation of apparatus of the present invention;
Fig. 5 is the schematic flow sheet that online reading plant network of the present invention sent and received the XML data.
 
Primary clustering symbol description in the accompanying drawing
Server 20
Control module 201
Electronic book data storehouse 202
Type-setting module 203
Sending module 204
Reading terminal 21
Read module 211
Receiver module 212
Display module 213
Fixed header 30
Payload 31
Step 401,402,403,404,405
Step 501,502,503,504,505,506,507
Embodiment
Because the present invention is the devices and methods therefor that discloses a kind of online reading, particularly comprise a kind of system and method that changes shelves and resolve.Some that are used are about electronic book data storehouse, RTP (Real-Time Transport Protocol), network path MTU MTU in an embodiment of the present invention, be to utilize prior art to reach, so in following explanation, do not do complete description.In addition, accompanying drawing herein, not according to the actual complete drafting of relative dimensions, its effect is only being expressed the schematic diagram relevant with feature of the present invention, explanation formerly.
 
First embodiment: online reading device
At first, see also Fig. 1, be the configuration diagram of online reading device proposed by the invention.As shown in Figure 1, server shown in the figure 20 transmits reading content in the mode of flow transmission in real time to reading terminal 21, wherein, reading terminal 21 can be an electronic installation platform that communicates by wired or wireless network (as: computer, palmtop PC, PDA, E-book reader etc.), and server 20 can be the combination of one or more computer server.
Then, see also Fig. 2, be online reading schematic representation of apparatus of the present invention.At first, server 20 of the present invention includes a control module 201, electronic book data storehouse 202, a type-setting module 203 and a sending module 204.Wherein, control module 201 is used to receive the reading request that the user sends by reading terminal 21, and sends the RTP packet to reading terminal 21.Wherein, the request of reading comprises that the e-book that will read identifies and the page of reading terminal shows specification.Electronic book data storehouse 202 is used to deposit a plurality of e-book, and each e-book has e-book sign and the reading content corresponding with it.Type-setting module 203 is connected with control module 201 and electronic book data storehouse 202, and the reading request that receives according to control module 201, in electronic book data storehouse 202, search and read the e-book sign that the sign in the request is complementary, the page that passes over according to control module 201 shows specification then, it is to be called 1.xml, 2.xml that content to be read is set type again with paging ... some XML files, and each file passed to sending module 204 as frame data.Sending module 204 is connected to control module 201 and type-setting module 203, the responsible XML file that type-setting module 203 is passed over, according to predetermined value network path MTU be split as some meet predetermined value (that is: the network path MTU) Da Xiao XML data slot, and according to RTP, with file (frame) is that unit adds the XML data slot control informations such as loadtype, sequence number, timestamp, forms complete RTP packet and sends.
Reading terminal 21 of the present invention includes a read module 211, a receiver module 212 and a display module 213.Wherein, read module 211 mainly is to be used to obtain e-book sign that the user will read and the page on reading terminal 21 current devices shows specification, and it is sent to the interface of server 20 (being the e-book server) as the request of reading, also be responsible for the response message of reception server 20 feedbacks simultaneously.Receiver module 212 is connected with read module 211, the RTP packet that carries the XML data slot that comes reception server to transmit according to RTP, and be responsible for that the RTP packet is put into a bag buffering area and (be arranged in receiver module 213, do not show among the figure) in, then according to control information combination ordering, after the RTP packet of same mark all arrives, the XML data slot that splits is merged into a complete XML file, and form a plurality of XML files in regular turn, and be submitted to display module 213.Display module 213 is connected with receiver module 212, the XML file that is used for that receiver module 212 is passed over is put into a parsing buffering area and (is positioned at display module 213, show among the figure) resolve after, and show that according to the page specification is shown with the XML file.
Please then consult Fig. 3, be the form schematic diagram of the RTP packet of online reading device of the present invention.The RTP packet has a fixed header 30 and payload 31 two parts, wherein the payload 31 of carrying in the RTP packet is XML file or XML data slot, and in fixed header 30, include a plurality of different data fields, therefore the corresponding control information of this load can be recorded in the data field in the fixed header 30, and these control informations are respectively PT Payload Type (Payload Type), timestamp (Timestamp), sequence number (Sequence Number) and flag bit (Mark); Wherein, PT Payload Type (Payload Type) has write down the data type of payload in the RTP packet.In general, the RTP data flow may relate to the transmission of stream such as the several data of looking message in transmission course, therefore needs a type identifier to distinguish, so that reading terminal 21 can select correct payload module to handle.In embodiments of the present invention, can be defined as follows load type in program distinguishes:
#define RTP _ PAYLOAD_NONE 0
#define RTP _ PAYLOAD_VIDEO 1//video data load
#define RTP _ PAYLOAD_AUDIO 2//voice data load
#define RTP _ PAYLOAD_XML 3//XML data load
……
What then, timestamp write down in the present invention is the page number information under the payload in the RTP packet.That is to say that the RTP packet that timestamp is identical is no matter the precedence of its arrival all can be considered to the display message that content to be read is the same page.Sequence number record be order of transmission in each RTP packet, it is to increase progressively successively according to the precedence that the RTP packet sends.Yet the RTP packet of coming by Network Transmission is " out of order arrival " always, more late the reaching of RTP packet that the RTP packet that makes elder generation send probably sends than the back, therefore reading terminal 21 can come the RTP packet that receives is sorted by this sequence number, makes it and send data consistent just to obtain the read data that the present invention needs.Flag bit is used in the present invention writing down and distinguish whether the payload that the RTP packet carries is to split data, this is because each XML file (frame) all may be subjected to the restriction of network path MTU in transmission course, therefore, if, needing also that this XML file is made data greater than the size or a certain specific numerical value of network path MTU, certain XML file does to split further.Its concrete fractionation rule is as follows:
1) different XML files is encapsulated in the different RTP packets; Even under the situation of packet space permission, can not be encapsulated into a plurality of XML files simultaneously in the same RTP packet;
2) when XML file during, the XML file is encapsulated into a RTP packet separately less than the network path MTU;
3) when the XML file surpasses the network path MTU, then the XML file is split into a plurality of XML data slots and be packaged into the RTP packet respectively.
What need further specify is because the XML data slot that splits is from the sample content with one page XML file, so these split after the RTP packet of encapsulation again, its timestamp should be consistent.
Second embodiment: online reading method
Follow again, see also Fig. 4, be online reading method flow schematic diagram proposed by the invention.As shown in Figure 4, the concrete steps of online reading of the present invention comprise as follows:
Step 401: send read request by network to e-book server 20 by reading terminal 21, the request of reading comprises: the e-book sign that read (for example: title) and the page of reading terminal 21 demonstration specification.In this step, the page of reading terminal 21 shows that specification comprises: parameter informations such as the screen resolution on the terminal equipment (as: 640 * 480), font type and font size.During concrete enforcement, the user can utilize the browser of http protocol on reading terminal 21 to submit the request of reading to e-book server 20, after e-book server 20 is obtaining reading request that reading terminal 21 sends, to reading terminal 21 feedback response messages, so that notify it to prepare to receive content to be read.
Step 402: e-book server 20 is searched corresponding e-book and is obtained its corresponding reading content according to the e-book sign from database, and shows that according to the page specification is set type content to be read again and paging is a plurality of XML files.Wherein set type and the process of paging, mainly be to show window size that specification provides and word height, the wide displaying contents that recomputates each page on reading terminal 21 of word, and then the composition information such as title, chapters and sections, paragraph and pattern of each page of back of setting type again put mark according to the syntax rule of XML according to the page.
Step 403: server 20 with each XML file be split as meet more than one predetermined value (that is: the network path MTU) Da Xiao XML data slot; During concrete enforcement, the present invention adopts RTP to transmit the XML file, before this agreement of use sends the XML file, need the XML file be split into the XML data slot according to the allowed transmission predetermined value of RTP, and according to RTP, the XML data slot that each XML file is split adds that control information forms the RTP packet and is sent to reading terminal 21.
Step 404: the RTP packet that carries control information that reading terminal 21 reception servers 20 send, and the RTP packet is put into one wrap buffering area, according to control information combination ordering, the XML data slot that splits is merged into a complete XML file, and form a plurality of XML files in regular turn.Wherein, the XML data slot merges, and is after the RTP packet of same mark all arrives, and the XML data slot that splits is merged into a complete XML file.
Step 405: reading terminal 21 is put into one with a plurality of XML files and is resolved buffering area, resolves, and takes out in regular turn and shown.
Then, see also Fig. 5, send and receive the schematic flow sheet of XML data for online reading plant network of the present invention.When in the step 403 of above-mentioned Fig. 4 during to the concrete enforcement of step 405, the concrete steps that online reading plant network of the present invention sent and received the XML data comprise as follows:
Step 501: at first, had XML file to be sent at server 20.
Step 502: whether server 20 can judge XML file to be sent less than the network path MTU, if, then direct execution in step 504; Otherwise, continue execution in step 503.
Step 503: will split into the XML data slot that several are not more than network path MTU MTU greater than the XML file of network path MTU size.
Step 504: according to RTP, to meet the XML file or the some XML data slots that transmit requirement and add field informations such as loadtype, sequence number, timestamp, flag bit, and form complete RTP packet and send to reading terminal 21 by network.
Because Network Transmission is dynamic change, the time of the transmission path of each RTP packet and arrival reading terminal 21 is all different, for adapting to complicated network environment, the present invention in the specific implementation, the buffer memory that can open up a constant volume in reading terminal 21 adapts to the delay and jitter of network, therefore, need set up bag buffering area and one resolves buffering area and cooperates and finish the reorganization ordering that receives data and resolve demonstration work.Concrete cooperating process between them is as follows: the RTP packet enters following steps after sending to reading terminal 21 by network:
Step 505: according to RTP, the RTP packet that reception server 20 sends over.
Step 506: according to timestamp and sequence number in the bag buffering area to the XML file that receives or the reorganization ordering of XML data slot.
Step 507:, then send into to be resolved and demonstrations such as resolving buffering area to constituting complete XML file in the bag buffering area.
In addition, also need to prove, in the above description, in bag buffering area and the parsing buffering area, the deposit data time all is temporary transient, and its data of depositing also are dynamically and bring in constant renewal in, XML file in the buffering area or XML data slot are promptly removed after the parsing reading process finishes immediately.
Via online reading apparatus and method provided by the present invention, can allow the user needn't wait until that whole electronic book documentary is downloaded just to finish and to read required content in real time, saved the stand-by period the when user reads, and reduced requirement the reading terminal memory headroom.
Below only being preferred embodiment of the present invention, is not in order to limit the interest field of the present patent application; Simultaneously above description should understand for those of ordinary skills and implement, so other does not break away from the equivalence of being finished under the disclosed spirit and change or modify, and all should be contained in the scope of claims.

Claims (10)

1. an online reading device comprises server and reading terminal, it is characterized in that: described server comprises:
Control module is used to receive the reading request that comprises e-book sign to be read and page demonstration specification that described reading terminal sends, and sends the real time data bag to described reading terminal;
The electronic book data storehouse is used to deposit and has and the e-book e-book of e-book sign one to one;
Type-setting module is searched the e-book sign that is complementary with described reading request according to described reading request in described electronic book data storehouse, and shows according to the page that specification is set type the corresponding reading content of described e-book sign again and become a plurality of XML files with paging; And
Sending module is split as the XML data slot that meets the predetermined value size with each XML file, and according to RTP each XML data slot is sent by the real time data bag;
Described reading terminal comprises:
Read module is sent to described server with described reading request, receives the response message of described server feedback simultaneously;
Receiver module receives the real time data bag that described server sends, and the XML data slot that splits is merged into a plurality of XML files; And
Display module is used for that the XML file is resolved the back and shows.
2. online reading device according to claim 1, it is characterized in that: described real time data bag has a fixed header and a payload, wherein said payload is the XML data slot, the corresponding control information of the described payload of described fixed header corresponding stored.
3. online reading device according to claim 2 is characterized in that: described control information comprises PT Payload Type, timestamp, sequence number and flag bit.
4. online reading device according to claim 1 is characterized in that: the described predetermined value in the described sending module is the network path MTU.
5. online reading device according to claim 4 is characterized in that: describedly each XML file is split as the XML data slot that meets the predetermined value size comprises:
(a) different XML files is encapsulated in each self-corresponding real time data bag;
(b) when described XML file during, described XML file is encapsulated into a real time data bag separately less than the network path MTU;
(c) when described XML file surpasses the network path MTU, then described XML file is split into a plurality of XML data slots and be packaged into the real time data bag respectively.
6. online reading method is characterized in that: include the following step:
(1) send read request by network to server by reading terminal, described reading request comprises that the e-book that will read identifies and the page of reading terminal shows specification;
(2) server receives the request of reading, identifies the content of obtaining in the e-book to be read according to described e-book from the electronic book data storehouse of server, shows that according to the described page specification is set type content to be read again and paging is a plurality of XML files;
(3) server is split as the XML data slot of predetermined value size with each XML file, and the XML data slot is added that control information forms the real time data bag and is sent to reading terminal;
(4) reading terminal according to described control information combination ordering, merges the real time data bag, thereby forms a plurality of XML files with the XML data slot that splits, and is shown after resolving.
7. online reading method according to claim 6, it is characterized in that: described real time data bag has a fixed header and a payload, wherein said payload is the XML data slot, the corresponding control information of the described payload of described fixed header corresponding stored.
8. online reading method according to claim 6 is characterized in that: described control information comprises PT Payload Type, timestamp, sequence number and flag bit.
9. online reading method according to claim 6 is characterized in that: in the step (3), described predetermined value is the network path MTU.
10. online reading method according to claim 9 is characterized in that: in the step (3), each XML file is split as the XML data slot that meets the predetermined value size comprises:
(a) different XML files is encapsulated in each self-corresponding real time data bag;
(b) when described XML file during, described XML file is encapsulated into a real time data bag separately less than the network path MTU;
(c) when described XML file surpasses the network path MTU, then described XML file is split into a plurality of XML data slots and be packaged into the real time data bag respectively.
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