LU102592B1

LU102592B1 - E-book Device

Info

Publication number: LU102592B1
Application number: LU102592A
Authority: LU
Inventors: Xianming Wang
Original assignee: Wenzhou Institute Of Tech
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-09-03

Abstract

The present invention discloses an e-book device, comprising an input device, a display device, a microprocessor, a server and a wireless communication device; wherein both the input device and the display device are connected to the microprocessor; the server is connected to the microprocessor through the wireless communication device; the input device is used for inputting book search conditions; the display device is used for displaying book search results and reading e-books; the server comprises a storage for storing e-book information; the wireless communication device is used for transmitting information between the microprocessor and the server; and the microprocessor is used for retrieving e-book information from the server according to book search conditions, and clustering the retrieved e-book information to obtain e-books meeting the book search conditions. The e-book device of the present invention can quickly and accurately search for e-books that meet the user's requirements, improving the user experience.

Description

DESCRIPTION E-book Device

TECHNICAL FIELD The present invention relates to the technical field of e-books, in particular to an e-book device.

BACKGROUND With the rapid development of computer technology and network technology, digital books are becoming increasingly popular among the people. E-book is a new book record form with book information stored in a computer high-capacity storage medium.

E-books share some characteristics with traditional books; for example, both include a certain amount of information such as a certain amount of text and color pages that are arranged in accordance with the format of traditional books to adapt to the reader's reading habits, and both transmit information by the way of reading. Nevertheless, e-books have changed the shortcomings of traditional books, specifically: e-books leave out printing and post-printing processing, travel very fast taking the advantages of the Internet, and can be distributed all over the world at the same time; moreover, they change the phenomenon of current inventory backlog and waste, achieve zero inventory of books while meeting the supply demands of people at any time. However, as the huge amount of information are stored in e-books, it is difficult to achieve a fast search of documents after users enter the search conditions, and the searched documents contain a large number of irrelevant documents, which greatly affects the user experience. So, it is especially necessary to provide an e-book device with fast search speed and high accuracy.

SUMMARY In order to solve the technical problems existing in the prior art, the purpose of the present invention is to provide an e-book device, which can quickly and accurately search for e-books that meet the user's requirements and greatly improve the user experience.

In order to achieve the above purpose, the technical solutions used in the present invention are as follows: the present invention provides an e-book device, comprising an input device, a display device, a microprocessor, a server and a wireless communication device, wherein both the input device and the display device are connected to the microprocessor, and the server is connected to the microprocessor through the wireless communication device; the input device is used for inputting book search conditions; the display device is used for displaying book search results and reading e-books; the server comprises a storage for storing e-book information; the wireless communication device is used for transmitting information between the microprocessor and the server; the microprocessor is used for retrieving e-book information from the server according to book search conditions, and clustering the retrieved e-book information to obtain e-books meeting the book search conditions; wherein, the microprocessor comprises a display interface circuit, a bus interface circuit, a wireless communication interface circuit, a power switch control circuit, a power circuit and a processor circuit; the display interface circuit, the bus interface circuit, the wireless communication interface circuit and the power switch control circuit are connected to the processor circuit respectively; the display interface circuit is connected to the display device; the bus interface circuit is connected to the input device; the wireless communication interface circuit is connected to the wireless communication device; and the power circuit is connected to the power switch control circuit.

Preferably, the wireless communication device is a 4G module or a WIFI module.

Preferably, a touchable display screen is selected as the display device.

Preferably, the touchable display screen comprises a capacitive screen body, wherein the front side of the capacitive screen body is a touch side that is provided with an ITO film which is flexible, and the back side thereof is a non-touch side that is provided with an ITO conductive layer.

Preferably, the input device comprises a touch input device and/or a voice receiver.

Preferably, the microprocessor further comprises a power amplifier circuit which is connected to the processor circuit and a loudspeaker respectively.

Preferably, the power circuit comprises a short-circuit protection circuit, an anti-reverse connection circuit and a power interface circuit which are connected sequentially, and the short-circuit protection circuit is connected to the power switch control circuit.

Preferably, the microprocessor circuit comprises a receiving unit, a clustering unit, a detecting unit and a sending unit; the receiving unit is connected to the wireless communication interface circuit; the sending unit is connected to the display interface circuit and the power amplifier circuit; the receiving unit, the clustering unit, the detecting unit and the sending unit are sequentially connected: the receiving unit is used for receiving the e-books retrieved from the server by categories and transmitting the e-books to the clustering unit: the clustering unit is used for clustering the e-books received by the receiving unit; the detecting unit is used for verifying the clustering results of the clustering unit and screening out the e-books that match the keywords; and the sending unit is used for sending the screened e-books that match the keywords to the display interface circuit and the power amplifier circuit.

Preferably, the clustering unit clusters the e-books received by the receiving unit according to an AR-Grams clustering method.

Preferably, the indexes for verifying the clustering results of the clustering unit by the detecting unit comprises clustering coverage rate, accuracy, recall rate and F-score.

The present invention discloses the following technical effects: According to the e-book device of the present invention, the input device receives an e-book category sent by a user and keywords to be searched, the category information input by a microprocessor user is sent to the server through the wireless communication device, and the server retrieves the e-book data from the storage according to the category information and sends the e-book data to the microprocessor through the wireless communication device. The microprocessor clusters the received e-book data according to the received keywords, screens out the e-books that match the keywords, and displays the e-books that match the keywords on a display device for being selected and read by a user. The e-book device of the present invention can effectively avoid the documents searched by users containing a large number of irrelevant documents, can quickly and accurately search out the e-books meeting the user requirements, and can recommend relevant books according to the books searched or read by users, thus greatly improving the user experience.

BRIEF DESCRIPTION OF THE FIGURES In order to explain more clearly the embodiments in the present invention or the technical solutions in the prior art, the following will briefly introduce the figures needed in the description of the embodiments. Obviously, figures in the following description are only some embodiments of the present invention, and for a person skilled in the art, other figures may also be obtained based on these figures without paying any creative effort.

Fig. 1 is a schematic view of the e-book device of the present invention.

Fig. 2 is a flow chart of the clustering unit according to an embodiment of the present invention.

DESCRIPTION OF THE INVENTION The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention and not all of them. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention will be further described in detail with reference to accompanying drawings and preferred embodiments for a clear understanding of the above purpose, features and advantages of the present invention.

By referring to Fig. 1, this example provides an e-book device, comprising an input device, a display device, a microprocessor, a server and a wireless communication device, wherein both the input device and the display device are connected to the microprocessor, and the server is connected to the microprocessor through the wireless communication device; the input device is used for inputting book search conditions; the display device is used for displaying book search results and reading e-books; the server comprises a storage for storing e-book information; the wireless communication device is used for transmitting information between the microprocessor and the server; the microprocessor is used for retrieving e-book information from the server according to book search conditions, and clustering the retrieved e-book information to obtain e-books meeting the book search conditions; wherein, the microprocessor comprises a display interface circuit, a bus interface circuit, a wireless communication interface circuit, a power switch control circuit, a power circuit and a processor circuit; the display interface circuit, the bus interface circuit, the wireless communication interface circuit and the power switch control circuit are connected to the processor circuit respectively; the display interface circuit is connected to the display device; the bus interface circuit is connected to the input device; the wireless communication interface circuit is connected to the wireless communication device; and the power circuit is connected to the power switch control circuit.

Furthermore, the processor circuit adopts a single chip microcomputer with the model MSP430F149. The display interface circuit has an HDMI interface and is connected to a display screen with an HDMI interface.

Furthermore, the wireless communication device is a 4G module or a WIFI module.

Furthermore, a touchable display screen is selected as the display device.

Furthermore, the touchable display screen comprises a capacitive screen body, wherein the front side of the capacitive screen body is a touch side that is provided with an ITO film which is flexible, and the back side thereof is a non-touch side that is provided with an ITO conductive layer.

Furthermore, the input device comprises a touch input device and/or a voice receiver, and the input device is used for inputting an e-book category and keywords to be searched.

Furthermore, the microprocessor further comprises a power amplifier circuit which is connected to the processor circuit and a loudspeaker respectively, and the loudspeaker is used for playing the e-book read by voice.

Furthermore, the power circuit is used for supplying power to the whole master control board, and the power control switch circuit is used for controlling the microprocessor to power on. The power circuit comprises a short-circuit protection circuit, an anti-reverse connection circuit and a power interface circuit which are connected sequentially, and the short-circuit protection circuit is connected to the power switch control circuit. The short-circuit protection circuit is used for circuit protection of the entire microprocessor, and can limit the current of the entire microprocessor to less than 3A to prevent a danger of excessive external supply current due to a short circuit of the microprocessor. The anti-reverse connection circuit is a metal-oxide-semiconductor field-effect transistor (MOS transistor) anti-reverse connection circuit with small power consumption and capable of extending the service life of power. The anti-reverse connection circuit is used for automatically disconnecting the circuit to prevent damage to the back-end circuit when the power terminal and grounding terminal of the power interface circuit are reversely connected. The power interface circuit is used for supplying power to the whole master control board.

The processor circuit retrieves the e-books from the server by the received e-book category, and clusters the e-books meeting the requirements. The microprocessor circuit comprises a receiving unit, a clustering unit, a detecting unit and a sending unit; the receiving unit is connected to the wireless communication interface circuit; the sending unit is connected to the display interface circuit and the power amplifier circuit; the receiving unit, the clustering unit, the detecting unit and the sending unit are sequentially connected.

the receiving unit is used for receiving the e-books retrieved from the server by categories and transmitting the e-books to the clustering unit: The clustering unit clusters e-books according to an AR-Grams clustering method, and transmits a clustering result to the detecting unit; specifically: it is assumed that the number of original e-book document sets retrieved by the corresponding category is Æ, and each document set corresponds to a subject, denoted as D, = {d}, d,, u, di}, D, = di, dy,.d,}, D, = df, dy, d}}. The experimental document set is a union set of the above document sets, and when the attribution of documents may not or cannot be distinguished, the document set can be written as: D ={d, d,,-,d,} , where n=3n is the number of documents in the document set. The similarity threshold in the clustering process is 7 ; i.e., if the similarity value of documents is not lower than the threshold, these documents can be grouped into a class. The number of documents in a cluster has a threshold C; i.e., if the number of documents in an initial cluster is not lower than this threshold, the initial cluster is considered a valid cluster, otherwise it is abandoned. The specific clustering process is shown in Fig. 2. In Fig. 2, the flag variable can be used to record the number of clusters obtained when the initial clustering is completed, and can also be used as the serial number of each cluster. S = Sim(d;, d;) is intended to calculate the similarity values of documents d; and d; by using the R-Grams text similarity algorithm. After clustering, the number of initial clusters is obtained according to the flag value, and the minimum number of elements in each initial cluster is C. The initial clustering here refers to the direct clustering result after AR-Grams clustering, so as to distinguish from the final clustering.

The initial result of DR-Grams clustering is relatively "rough" and not accurate enough. In the following general and special case, it is assumed that the document set D = {dj d,, ds}, each document d; is considered as a set of characters and satisfies the following definite relations d > d,, d D d,, dy ndy = ® and Len(d,) > Len(d,) > Len(d,) , where, Len is the document length. Then, as d1 is preferentially used as a marker document for clustering, d1, d2 and d3 are clustered into one class in the DR-Grams clustering, although there is no relationship between d2 and d3. In other words, DR-Grams clustering may cluster some irrelevant documents into the same class. According to the present invention, the document sets are arranged in ascending order and various clusters are established separately through similarity calculation. Such an improvement maintains the advantages of DR-Grams clustering and overcomes its shortcoming. Still, in the document set D = (dj, d,, dy}, d3 and d1 are clustered into one class in the AR-Grams clustering, as the marker document for clustering is d3. However, d2 is not included in the class because the intersection of d3 and d2 is empty, thus achieving the improvement of the shortcoming of DR-Grams clustering.

The detecting unit is used for verifying the clustering results of the clustering unit and screening out e-books that match the keywords. Specific indexes comprise clustering coverage rate, accuracy, recall rate and F-score. The calculation method of clustering coverage rate comprises the following steps: assuming that the number of elements in each cluster corresponding to the original document set of the corresponding category of e-books is n!',nÿ,-,n£ and the correct number of elements is n! ni, n! k respectively, the overall clustering coverage rate is defined as: C, Bad ; that n is, the ratio of the sum of the number of documents in all clusters to the total k number of documents; and the correct coverage rate is defined as: C, zn n that is, the ratio of the sum of the number of correct documents in all clusters to the total number of documents; wherein the range of clustering coverage rate and correct coverage rate is [0,1], and meets the condition C, < Cs the correct coverage rate represents the overall performance of clustering; and the larger the value, the better the overall effect of clustering.

The sending unit is used for sending the screened e-books that match the keywords to the display interface circuit and the power amplifier circuit for being selected by a user.

According to the e-book device of the present invention, the input device receives an e-book category sent by a user and keywords to be searched, the category information input by a microprocessor user is sent to the server through the wireless communication device, and the server retrieves the e-book data from the storage according to the category information and sends the e-book data to the microprocessor through the wireless communication device. The microprocessor clusters the received e-book data according to the received keywords, screens out the e-books that match the keywords, and displays the e-books that match the keywords on a display device for being selected and read by a user. The e-book device of the present invention can effectively avoid the documents searched by users containing a large number of irrelevant documents, can quickly and accurately search out the e-books meeting the user requirements, and can recommend relevant books according to the books searched or read by users, thus greatly improving the user experience.

The preferred embodiments described herein are only for illustration purpose, and are not intended to limit the present invention. Various modifications and improvements on the technical solution of the present invention made by those of ordinary skill in the art without departing from the design spirit of the present invention shall fall within the protection scope as claimed in claims of the present invention.

Claims

1. An e-book device, characterized by comprising an input device, a display device, a microprocessor, a server and a wireless communication device, wherein both the input device and the display device are connected to the microprocessor, and the server is connected to the microprocessor through the wireless communication device; the input device is used for inputting book search conditions; the display device is used for displaying book search results and reading e-books; the server comprises a storage for storing e-book information; the wireless communication device is used for transmitting information between the microprocessor and the server; the microprocessor is used for retrieving e-book information from the server according to book search conditions, and clustering the retrieved e-book information to obtain e-books meeting the book search conditions; wherein, the microprocessor comprises a display interface circuit, a bus interface circuit, a wireless communication interface circuit, a power switch control circuit, a power circuit and a processor circuit; the display interface circuit, the bus interface circuit, the wireless communication interface circuit and the power switch control circuit are connected to the processor circuit respectively; the display interface circuit is connected to the display device; the bus interface circuit is connected to the input device; the wireless communication interface circuit is connected to the wireless communication device; and the power circuit is connected to the power switch control circuit.

2. The e-book device according to claim 1, characterized in that the wireless communication device is a 4G module or a WIFI module.

3. The e-book device according to claim 1, characterized in that a touchable display screen is selected as the display device.

4. The e-book device according to claim 3, characterized in that the touchable display screen comprises a capacitive screen body, wherein the front side of the capacitive screen body is a touch side that is provided with an ITO film which is flexible, and the back side thereof is a non-touch side that is provided with an ITO conductive layer.

5. The e-book device according to claim 1, characterized in that the input device comprises a touch input device and/or a voice receiver.

6. The e-book device according to claim 1, characterized in that the microprocessor further comprises a power amplifier circuit which is connected to the processor circuit and a loudspeaker respectively.

7. The e-book device according to claim 1, characterized in that the power circuit comprises a short-circuit protection circuit, an anti-reverse connection circuit and a power interface circuit which are connected sequentially, and the short-circuit protection circuit is connected to the power switch control circuit.

8. The e-book device according to claim 6, characterized in that the microprocessor circuit comprises a receiving unit, a clustering unit, a detecting unit and a sending unit; the receiving unit is connected to the wireless communication interface circuit; the sending unit is connected to the display interface circuit and the power amplifier circuit; the receiving unit, the clustering unit, the detecting unit and the sending unit are sequentially connected; the receiving unit is used for receiving the e-books retrieved from the server by categories and transmitting the e-books to the clustering unit; the clustering unit is used for clustering the e-books received by the receiving unit; the detecting unit is used for verifying the clustering results of the clustering unit and screening out the e-books that match the keywords; and the sending unit is used for sending the screened e-books that match the keywords to the display interface circuit and the power amplifier circuit.

9. The e-book device according to claim 8, characterized in that the clustering unit clusters the e-books received by the receiving unit according to an AR-Grams clustering method.

10. The e-book device according to claim 8, characterized in that the indexes for verifying the clustering results of the clustering unit by the detecting unit comprises clustering coverage rate, accuracy, recall rate and F-score.