CN112558893B - Portable intelligent printing device and control method thereof - Google Patents

Portable intelligent printing device and control method thereof Download PDF

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Publication number
CN112558893B
CN112558893B CN202011531766.4A CN202011531766A CN112558893B CN 112558893 B CN112558893 B CN 112558893B CN 202011531766 A CN202011531766 A CN 202011531766A CN 112558893 B CN112558893 B CN 112558893B
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printing
error
question
portable intelligent
operating system
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CN112558893A (en
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陈佳斌
谢发炎
吴涛
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Beijing Baige Feichi Technology Co ltd
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Xiamen Miaobao Technology Co ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
    • G06F3/1237—Print job management
    • G06F3/1242—Image or content composition onto a page
    • G06F3/1243—Variable data printing, e.g. document forms, templates, labels, coupons, advertisements, logos, watermarks, transactional printing, fixed content versioning
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/51—Indexing; Data structures therefor; Storage structures
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G06F16/583—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using metadata automatically derived from the content
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
    • G06F3/1279—Controller construction, e.g. aspects of the interface hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/12—Digital output to print unit, e.g. line printer, chain printer
    • G06F3/1201—Dedicated interfaces to print systems
    • G06F3/1278—Dedicated interfaces to print systems specifically adapted to adopt a particular infrastructure
    • G06F3/1292—Mobile client, e.g. wireless printing

Abstract

The invention discloses a portable intelligent printing device and a control method thereof, wherein the portable intelligent printing device is provided with an operating system and a local memory; acquiring image information of a wrong question; analyzing and processing the acquired error image information and converting the error image information into error data; adding the obtained error data and/or error image into a local database stored in a local memory; synchronously uploading the wrong question data and/or wrong question images added and stored in the local database to a server side under the condition that a network state is detected; and after the uploading is judged to be finished, synchronously merging the error data and/or the images which are changed corresponding to the downloading server into a local database. The portable intelligent printing device provided by the invention can realize wrong search matching printing no matter in the condition of network or no network, is convenient for users to use, and can meet the use requirements of the users in different scenes.

Description

Portable intelligent printing device and control method thereof
Technical Field
The invention relates to the technical field of intelligent printing, in particular to a portable intelligent printing device and a control method thereof.
Background
The portable printer is popular among the student groups because of small volume and convenient carrying, and even the portable printer is small enough to be placed in a pocket of a user, so that the user can easily hold the printer, and the portable printer is very popular like a common learning tool.
Utility model patent that application number is CN201921351745.7 discloses a wrong problem of portable intelligence arrangement equipment acquires the wrong problem information of conversion through scanning device, communication device with wrong problem information send to the terminal and acquire behind the information of terminal feedback with information transmission extremely print the processing with printing device. The terminal includes the magnanimity question bank the information such as the story stem, analysis, answer, knowledge point that contain a large amount of questions in the question bank, communication device will wrong question information routing to the terminal after scanning device scanning, the terminal retrieves in the question bank, compares, when searching for the same or similar question in the question bank, after information processing, returns data back communication device, communication device with received information transmission with printing device carries out the printing process on next step to realize the printout of wrong question relevant content in the question bank.
The application discloses portable intelligent wrong question collating equipment can only realize searching for matching wrong questions in the question bank of the terminal through the communication device under the networking state, so that the purpose of printing and outputting the relevant contents of the wrong questions in the question bank is realized.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide a portable intelligent printing device and a control method thereof.
In order to achieve the purpose, according to one aspect of the invention, the invention adopts the following technical scheme:
a control method of a portable intelligent printing device, the portable intelligent printing device having an operating system and a local memory;
acquiring image information of a wrong question;
analyzing and processing the acquired error image information and converting the error image information into error data;
adding the obtained error data and/or error image into a local database stored in a local memory;
synchronously uploading the wrong question data and/or wrong question images added and stored in the local database to a server side under the condition that a network state exists;
and after the uploading is judged to be finished, synchronously merging the error data and/or the images which are changed corresponding to the downloading server into a local database.
Further, after the operating system receives the printing instruction;
searching corresponding error question data of the preprinted error questions in a local database according to the ID of each error question and/or preset screening conditions;
and converting the acquired error data of the preprinted error into a binary image and transmitting the binary image to a printing module for printing and outputting.
Further, after the operating system receives a printing instruction;
acquiring an original picture of a preprinted error question;
carrying out binarization processing on the obtained original image to obtain a binarization image of a preprinted error question;
searching and matching in a local database according to the acquired binary image;
and previewing and displaying the matched pre-printed error binary image in the local database, and transmitting the image to a printing module for printing and outputting after receiving a confirmation instruction.
Further, the portable intelligent printing device also comprises a rendering module and a binarization processing module;
the rendering module draws and renders to form a rendering image of the preprinted wrong questions according to the wrong question data of the preprinted wrong questions searched in the local database;
and the binarization processing module is used for carrying out binarization processing on the rendered image of the preprinted error question and transmitting the obtained binarization image of the preprinted error question to the printing module for printing and outputting.
Further, the error question data comprises an error question ID and/or error question content and/or an error question field and/or an error question subject and/or student mastery degree and/or error question state and/or timestamp information;
after receiving the modification instruction, the operating system searches for matching and displays wrong question data of the pre-modified wrong question in a local database according to the received modification instruction;
modifying and adjusting the wrong question content and/or wrong question field and/or wrong question subject and/or student mastery degree and/or wrong question state of the pre-modified wrong question according to the received modification instruction;
acquiring modified error data and modifying the timestamp to update and store the modified error data and the modified timestamp in a local database;
when the network state is detected, the operating system can synchronize the error data updated and stored in the local database to the server, and simultaneously download and combine the error data changed by the server to the local database.
Further, after receiving the deleting instruction, the operating system searches for matching and displays wrong data of the pre-deleted wrong in the local database according to the received deleting instruction;
modifying the state information of the pre-deleted fault in the local database from a default state to a deleted state, and updating and storing the updated state information of the pre-deleted fault and the deleted timestamp in the local database;
when a network state is detected, the server side acquires a pre-deletion error question with state information being a deletion state from the operating system and deletes the pre-deletion error question at the server side;
and after the server side judges that the pre-deletion fault is deleted, the operating system synchronously deletes the pre-deletion fault marked as a deletion state in the local database.
The system comprises a plurality of portable intelligent printing devices for logging in the same network account, wherein the portable intelligent printing devices are respectively in communication connection with a server side, and each portable intelligent printing device is provided with a local database for storing error data;
under the condition of no network, the plurality of portable intelligent printing devices can store the respective changed error data in respective local databases;
and under the condition that the network state is detected, the plurality of portable intelligent printing devices respectively upload the error data changed by the plurality of portable intelligent printing devices to the server side, and respectively download and merge the error data changed by the server side into the local databases of the plurality of portable intelligent printing devices.
Further, after each networking is detected, the operating system synchronizes the changed wrong questions to the server side in multiple threads according to the change types, wherein the change types comprise adding wrong question data, modifying wrong question data and deleting wrong question data;
the server compares the last time of the wrong question change timestamp T uploaded from the operating system 1 Last change timestamp T of corresponding error question stored by server 1 ': if T is judged 1 Later than T 1 ' then, the server-side synchronizes and merges the error data of the error variation in the operating system.
Further, after the error data is judged to be uploaded, the operating system sends a downloading request to the server;
in the downloading process: the operating system judges whether the local database corresponding to the error data downloaded from the server side exists: if yes, correspondingly synchronizing and modifying the wrong data in the local database; if the data do not exist, adding wrong data in the local database correspondingly;
preferably, if the amount of the pre-downloaded wrong-problem data is greater than the set value, the operating system downloads the varied wrong-problem data from the server in batches according to the batch downloading program.
Another object of the present invention is to provide a portable intelligent printing apparatus using any one of the above control methods, including: the printing system comprises a controller, and a printing module and an operating system which are respectively connected with the controller.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the portable intelligent printing device provided by the invention is provided with the local memory, and the obtained error data and/or error image can be added and stored in the local database of the local memory, so that the search matching printing of the error can be realized under the conditions of network existence and no network existence, the phenomenon that the portable intelligent printing device cannot normally print under the scene of non-networking is avoided, the use of the portable intelligent printing device is convenient for users, and the use requirements of the users in different scenes can be met. The portable intelligent printing device provided by the invention is not limited by a network, is more suitable for being applied to daily learning, can realize the printing of wrong questions even if students do not have the network, and greatly improves the learning efficiency.
According to the portable intelligent printing device provided by the invention, under the condition of a network, the portable intelligent printing device can synchronously upload the wrong question data and/or wrong question images stored in the local memory to the server, and synchronously merge the wrong question data and/or wrong question images changed by the corresponding download server into the local database after uploading is finished. On one hand, wrong question data in the local database are backed up to the server, so that the wrong question data cannot be lost even if the portable intelligent printing device is replaced, on the other hand, the wrong question data changed by the server is downloaded into the local database of the portable intelligent printing device, and the integrity of the wrong question data in the local database and the consistency of the wrong question data and the server are guaranteed.
Drawings
FIGS. 1 to 4 are schematic block diagrams illustrating a flow chart of a control method for a portable intelligent printing device according to a first embodiment of the present invention;
fig. 5 to 10 are schematic block diagrams showing a flow of a control method of the portable intelligent printing apparatus according to the second embodiment of the present invention;
FIG. 11 is a block diagram of a portable intelligent printing device according to a third embodiment of the present invention;
FIG. 12 is a flowchart of a printing operation performed by the portable intelligent printing device in the third embodiment of the present invention;
fig. 13 is a flowchart of modifying the default driver in the portable intelligent printing device according to the third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail with reference to examples.
Example one
As shown in fig. 1 to 4, the present embodiment provides a control method of a portable intelligent printing apparatus having an operating system and a local storage having a local database for storing error data therein.
According to the embodiment, the error question data can be added and stored through the local database arranged in the portable intelligent printing device, even if no network exists, the relevant error questions can be searched in the local database for printout, the use by a user is facilitated, and the problem that the searching, matching and printing cannot be realized under the condition that the existing intelligent printing device is not networked is solved.
Specifically, as shown in fig. 1, the method for controlling the portable intelligent printing device provided by the present invention includes the following steps:
s11: the portable intelligent printing device further comprises an image acquisition module for acquiring the image information, and the image acquisition module can scan or shoot an error image on a homework book or a computer screen.
S12: the portable intelligent printing device further comprises a processing module for processing the image acquired by the image acquisition module and converting the image into error data.
S13: and adding the obtained error data and/or error image into a local database stored in a local memory, wherein the local database can directly store the image information obtained by the image obtaining module, can store the error data processed by the processing module into the local database, or can store both the error image and the error data into the local database.
The obtained error data and/or error images are added and stored in a local database of a local memory, searching, matching and printing of the error can be realized no matter whether a network exists or not, the phenomenon that the portable intelligent printing device cannot normally print in the scene without networking is avoided, the portable intelligent printing device is convenient for users to use, and the use requirements of the users in different scenes can be met.
S14: and synchronously uploading the wrong question data and/or wrong question images added and stored in the local database to the server side when the network state is detected, and backing up the wrong question data in the local database to the server side, so that the wrong question data cannot be lost even if the portable intelligent printing device is replaced.
S15: after the wrong question data and/or wrong question images in the local database are judged to be uploaded, the wrong question data and/or images changed by the corresponding downloading server side of the portable intelligent printing device are synchronously merged into the local database. The portable printing device prints under the condition of no network, and after the network exists, the data of the server is merged into the local database, and the local database is synchronized to the server, so that the integrity of error data in the local database and the consistency of the error data and the server are ensured.
In one embodiment, as shown in fig. 2, after receiving the print instruction, the operating system may print out according to the following steps:
s21: and the portable intelligent printing device searches the corresponding error question data of the preprinted error questions in a local database according to the ID of each error question and/or the preset screening condition.
When the processing module analyzes and processes the wrong question image, a one-to-one corresponding wrong question ID label is formed for each question, and after a printing instruction of a user is received, the portable intelligent printing device can search wrong question data matched with the pre-printed wrong questions in a local database according to the wrong question ID labels.
Alternatively, in another embodiment, the portable intelligent printing device may also search and match the wrong question data of the wrong question to be printed according to a preset screening condition, for example, the portable intelligent printing device may search and match according to a screening condition such as a wrong question subject or a mastery degree.
S22: the method comprises the steps of converting obtained error data of pre-printed errors into a binary image, transmitting the binary image to a printing module for printing and outputting, wherein a processing module of the portable intelligent printing device comprises a binary processing module, the binary processing module can convert the error data of the pre-printed errors into the binary image, if colors are converted into black and white, and the binary processing module adopts an algorithm owned by the portable intelligent printing device.
In one embodiment, after receiving the printing instruction, the operating system may further perform searching, matching, and printing in a local database according to the photographed original image; the method specifically comprises the following steps:
s31: acquiring an original picture of the preprinted error problem, and directly scanning or shooting the original picture of the preprinted error problem through an image acquisition module, for example: when the students find that the problem is possibly a wrong problem which is stored in the local database of the portable intelligent printing device before in the process of making the problem, the problem can be scanned or shot by the image acquisition module.
S32: the binarization processing module of the portable intelligent printing device can carry out binarization processing on the obtained original image to obtain a pre-printed wrong binarization image.
S33: and searching for matching in a local database according to the acquired binary image.
S34: and previewing and displaying the matched binary image of the preprinted wrong questions in the local database, and transmitting the image to a printing module for printing and outputting after receiving a confirmation instruction.
Preferably, in another embodiment, the portable intelligent printing device further comprises a rendering module; the rendering module draws and renders to form a rendering image of the preprinted wrong questions according to the wrong question data of the preprinted wrong questions searched in the local database; and the binarization processing module is used for carrying out binarization processing on the rendered image of the pre-printed error question and transmitting the obtained binarization image of the pre-printed error question to the printing module for printing and outputting.
Specifically, in this embodiment, the error data is stored in the local database through the SQLite, and a unique error ID and a unique identifier uniqueness are set for each error by adding fields such as a timestamp; searching corresponding wrong question data from a local database through the wrong question ID in a network-free state, and drawing and rendering a UI (user interface) on the searched wrong question data through a rendering module; and the picture which is converted into binaryzation by the drawing UI is transmitted to the printing module for printing and outputting through the binaryzation processing module.
Further, the error question data described in this embodiment includes an error question ID and/or error question content and/or error question field and/or error question subject and/or student mastery degree and/or error question state and/or timestamp information.
In this embodiment, the wrong-question adding correspondence takes the wrong-question data as a record to be recorded in the local database, where the record includes detailed information such as a timestamp, wrong-question content, wrong-question subject, mastery degree, and added timestamp; if the wrong question data is modified correspondingly, the wrong question information of the local database is modified and the operation modification timestamp is recorded correspondingly every time locally; and if the corresponding error is deleted, correspondingly modifying and recording the modification state and the deletion timestamp of the error data of the local library.
In one embodiment, as shown in fig. 3, the user may modify the error data in the local database of the portable intelligent printing device, specifically including the following steps:
s41: and after receiving the modification instruction, the operating system searches for matching and displays the wrong question data of the pre-modified wrong question in the local database according to the received modification instruction.
S42: and modifying and adjusting the wrong question content and/or wrong question field and/or wrong question subject and/or student mastery degree and/or wrong question state of the pre-modified wrong question according to the received modification instruction.
S43: and acquiring the modified error data and modifying the timestamp to update and store the modified error data and the modified timestamp in a local database.
S44: when the network state is detected, the operating system can synchronize the modified error data and the error data of which the modification time stamp is updated and stored in the local database to the server, and simultaneously download and combine the error data changed by the server to the local database so as to ensure the integrity of the error data in the local database and the consistency with the server.
In one embodiment, as shown in fig. 4, the user may delete the error data in the local database of the portable intelligent printing device, specifically including the following steps:
s51: and after receiving the deleting instruction, the operating system searches for matching and displays the wrong data of the pre-deleted wrong in the local database according to the received deleting instruction.
S52: and modifying the state information of the pre-deleted fault in the local database from a default state to a deleted state, and updating and storing the updated state information of the pre-deleted fault and the deleted timestamp in the local database.
S53: and when the network state is detected, the server side acquires the pre-deletion error with the state information being the deletion state from the operating system and deletes the pre-deletion error at the server side.
S54: and after the server side judges that the pre-deletion fault is deleted, the operating system synchronously deletes the pre-deletion fault marked as a deletion state in the local database.
In the above scheme, the status information of the error includes an addition status, a default status, a modification status, and a deletion status. When a user deletes wrong question data in a local database, the portable intelligent printing device marks pre-deleted questions in the local database into a deleted state instead of direct deletion, and deletes the wrong question data after the server side is synchronously deleted after networking, so that consistency of the wrong question data is guaranteed, and the phenomenon that the pre-deleted wrong questions cannot be completely deleted because the pre-deleted questions are downloaded to the local database again is avoided.
When deleting data in the local database, a state change is correspondingly made in the local database, and the state of the local database is marked as deleted, namely false deletion. When networking is performed, the local deletion data is uploaded to the server side correspondingly, and the error is deleted only if the synchronization is successful. Because the local deletion is off-line, the portable intelligent device is in an off-line state, and the remote server does not know the deletion of the client side, the local database is deleted falsely, and finally the synchronization is successful and then the deletion is carried out, so that the data consistency is maintained.
In another embodiment, the portable intelligent printing device in this embodiment may include a plurality of portable intelligent printing devices that log in the same network account, the plurality of portable intelligent printing devices are respectively in communication connection with the server, and each portable intelligent printing device has a local database for storing error data;
under the condition of no network, the plurality of portable intelligent printing devices can store the error data which changes respectively in the local databases; when a network state is detected, the portable intelligent printing devices respectively upload the error data changed by the portable intelligent printing devices to the server side and respectively download and combine the error data changed by the server side into respective local databases, so that the consistency of the error data of the portable printing devices under the same network account is ensured, and the phenomenon of missing problems is avoided, and the use experience of a user is influenced.
In one embodiment, after each networking is detected, the operating system synchronizes the changed wrong questions to the server in multiple threads according to change types, wherein the change types comprise adding wrong question data, modifying wrong question data and deleting wrong question data, and the wrong question data is synchronized to the server in multiple lines, so that the uploading efficiency of the wrong questions is improved, and data confusion is avoided.
In the scheme, error data synchronization is monitored through a heartbeat packet, and if data changes in a networking state, data synchronization operation is performed on a corresponding mobile terminal and a corresponding server terminal;
furthermore, in the uploading process, the server compares the wrong question last change timestamp T uploaded from the operating system 1 Last change timestamp T of corresponding error question stored by server 1 ': if T is judged 1 Later than T 1 ' then the server-side synchronizes and merges the error data of the error variation in the operating system.
Further, after the error data is judged to be uploaded, the operating system sends a downloading request to the server; in the downloading process: the operating system judges whether the local database corresponding to the error data downloaded from the server side exists: if yes, correspondingly synchronizing and modifying wrong data in the local database; if the error data do not exist, adding error data in the local database correspondingly;
preferably, if the amount of the pre-downloaded wrong-question data is judged to be larger than the set value, the operating system downloads the changed wrong-question data from the server in batches according to the batch downloading program, and the quality and the efficiency of the downloaded data are guaranteed.
The synchronization of the error topic data in this example is bidirectional: if no network exists, the error data is stored in the local database, once the network is connected, the corresponding server side and the local database are mutually synchronized and finally merged, and the consistency of the data is ensured.
An embodiment of the present invention further provides a portable intelligent printing apparatus, including: the controller is used for executing the control method of any one of the above embodiments.
Further, the portable intelligent printing device further comprises an image acquisition module, a rendering module, a display module and an input module, wherein the image acquisition module, the display module and the input module are respectively connected with the controller, the image acquisition module is suitable for acquiring images, the display module is suitable for displaying images, the input module is suitable for inputting information, and the rendering module is used for drawing rendered images.
The present invention further provides a computer-readable storage medium storing an executable program, where the executable program can be executed by a processor of a device on which the computer-readable storage medium is located, so as to implement the steps of any one of the above embodiments.
According to the portable printing device provided by the invention, wrong questions can be added and stored in the local database, off-line preview, wrong question editing and wrong question printing (for example, the connection with a network school) can be carried out on corresponding students, the conventional database is on a server, the preview printing can not be carried out on the server without networking, the conventional database is changed into the local database, and the matching preview printing can be carried out in the state without networking.
When the portable printing device is connected with a network, the local database synchronizes the addition of wrong questions or the change of wrong questions to the server, and after the synchronization is successful, the data corresponding to the change of the server is downloaded and synchronized and merged to the local database, so that the corresponding user data is stored, and the data can be kept updated synchronously even if equipment is replaced.
Example two
As shown in fig. 5 to 10, the present embodiment provides a control method of a portable intelligent printing device based on the first embodiment, which mainly solves the problem of how to select a font size suitable for a corresponding paper.
Because the portable intelligent printing device is smaller in size, if the font size more suitable for the small-size printing paper is selected on the large-size printing paper, the font size on the large-size printing paper is small and dense, so that a user cannot see the content clearly, if the font size more suitable for the large-size printing paper is selected on the small-size printing paper, the font size on the small-size printing paper is large and distant, and further more paper needs to be consumed,
the present embodiment provides a control method of a portable intelligent printing apparatus,
as shown in fig. 5, the method for controlling a portable intelligent printing apparatus of the present invention includes the steps of:
s101: acquiring printing content and expected display character size in preset paper;
s102: acquiring the actual paper width of the printer;
s103: determining an actual printing font size according to an expected display font size and an actual paper width in preset paper;
s104: and printing the printing content according to the printing font size.
In this embodiment, the printing apparatus first obtains the content to be printed and the desired display font size in the preset paper, where the desired display font size in the preset paper is the font size displayed on a certain size of paper set by the user, and may be set by the user at each printing or may be a default parameter set by the user in advance. The character display effect that the user wanted can be known to the expectation demonstration word size through predetermineeing in the paper, acquire the actual paper width of the paper of printing device current assembly again, according to predetermineeing expectation demonstration word size and the actual paper width in the paper and confirm actually printing the word size, and print the content according to actually printing the word size, thereby print out and both accorded with the user expectation, be adapted to the characters size of actual paper width again, and then avoided the too little or too big situation of characters, more rationally typeset the content of printing through suitable word size, promote the comfort level of watching of printing the document.
In one embodiment, as shown in fig. 6, step S103: the method includes the following steps that the actual printing character size is determined according to the expected display character size and the actual paper width in the preset paper, and specifically includes the following steps:
s201: determining a character size adjustment coefficient according to the ratio of the preset width of the paper to the actual width of the paper;
s202: and determining the actual printing font size according to the font size adjusting coefficient and the expected display font size.
In the embodiment, the font size adjustment coefficient is determined according to the ratio of the width of the preset paper to the actual paper width, so that the font size is more reasonably scaled, the visual effect of the finally printed characters is more in line with the expectation of a user, and the use experience is better.
In one embodiment, as shown in fig. 7, determining the font size adjustment coefficient according to the ratio of the preset width of the paper to the actual width of the paper specifically includes:
s301: acquiring a vision adjustment parameter;
s302: and calculating the product of the ratio of the width of the preset paper to the actual width of the paper and the visual adjustment parameter, and determining the calculation result as a character size adjustment coefficient.
In this embodiment, further multiply the vision adjustment parameter on the basis of the ratio of the broad width of presetting paper and actual paper width to confirm the result of calculation as the font size adjustment coefficient, further adjust on the proportion between the broad width of presetting paper and actual paper width like this, avoid font size equal proportion to enlarge or reduce and lead to font size book scale excess, further adjust the size of font size through the vision adjustment parameter, make the actual font size that finally obtains more accord with user's expectation, improve the use experience of product.
It should be noted that the visual adjustment parameter may be any value preset by the user according to the habit of the user, or may be any value set by the manufacturer according to the previous test. For example, the value of the visual adjustment parameter is 0.5 to 2.
In one embodiment, acquiring the print content and the desired display font size in the preset paper specifically includes: the printing system is in communication connection with the terminal and receives a printing request from the terminal, wherein the printing request comprises printing content and expected display word size in preset paper.
The printing device in the embodiment at least comprises a printing module and a controller, wherein the printing device is suitable for establishing communication connection with a terminal, and a user selects printing contents and sets expected display word sizes in preset paper through the terminal.
In more detail, the terminal performs the following steps:
establishing communication connection with a portable intelligent printing device; specifically, the terminal is in communication connection with the portable intelligent printing device through a wire or wirelessly (e.g., bluetooth).
Receiving the selected printing content and receiving the set expected display character size in the preset paper;
specifically, the print content may be a file such as WORD, PDF, TXT, or an image with characters, and is not limited in this respect. When the print content can be a word, PDF, TXT, or other file, it can be edited by the user on a paper size (for example, A4 paper) that is more familiar to the user, so that the set desired display font size in the preset paper can be obtained by directly acquiring the paper size and font size in the edited file through the terminal. Of course, the desired display font size in the preset paper set may also be set by the user separately on the print setting interface of the terminal. For example, when the print content may be an image with text, it is more convenient and reasonable to set by the user alone.
And sending the received printing content and the expected display word size in the preset paper to the portable intelligent printing device.
In still another embodiment, the printing apparatus further includes a display module and an input module, and more specifically, the printing apparatus further includes a display screen and an input button, or the printing apparatus includes a touch display screen.
Since the printing apparatus of the present embodiment has an input function, a function of setting a desired display font size in a preset sheet can be transferred to the printing apparatus, and the terminal only needs to transmit the print content selected by the user.
Alternatively, as shown in fig. 8, in another embodiment, acquiring the print content and the desired display font size in the preset paper specifically includes:
s401: receiving the generated printing content;
s402: generating and displaying printing setting options, wherein the printing setting options comprise a paper option and a desired display font size option;
s403: a print request is generated based on the selection result of the print setting option and the print content.
The present embodiment is different from the above-described embodiments in that the printing apparatus itself has a function of generating print contents without depending on a terminal.
Further, the printing apparatus can generate print contents in the following manner.
In one embodiment, print content is generated from an image acquired by an image acquisition module. In detail, the portable intelligent printing device of the embodiment further has an image acquisition module, and the user directly shoots an image to be printed through the printing device and extracts characters in the image to generate the print content. On the one hand, the using function of the printing device is enriched, on the other hand, the printing device can break away from the terminal to independently realize printing, and the printing device is high in practicability and low in entertainment, so that the product is more suitable for groups such as students.
In other embodiments, the print content is generated from data within a database. In detail, the user selects the printing content by directly searching the content in the database, wherein the database can be stored in the server or the printing device itself, when the database is stored in the server, the printing device can establish communication connection with the server, and the user selects the content to be printed by accessing the server. On the one hand, the using function of the printing device is enriched, on the other hand, the printing device can get rid of the terminal and independently realize printing, and the printing device is high in practicability and low in entertainment, so that the product is more suitable for groups such as students.
In other embodiments, the print content is generated based on the input content. In detail, the printing apparatus also has an input module. For example, the printing apparatus further has a touch screen, and a user can input contents to be printed on the printing apparatus and directly perform a print job by using the printing apparatus. Thereby further richen printing device's service function, on the other hand makes printing device can break away from the terminal and independently realize printing, and printing device's practicality is high, recreational low for the product is more applicable to crowds such as student.
In one embodiment, after acquiring the print content and the desired display font size in the preset paper, the method further includes:
judging whether the width of the preset paper is the same as the actual paper width;
if the printing content is different from the expected display character size, the actual paper width and the actual display character size are determined according to the printing content.
In this embodiment, after acquiring the print content and the expected display font size in the preset paper, it is first determined whether the width of the preset paper is the same as the actual width of the paper, and if so, the process of adjusting the font size may be omitted, and the printing may be performed directly, so that the number of operations is reduced, and if not, the above step of adjusting the font size is required.
In one embodiment, as shown in fig. 9, before printing the print content according to the print font size, the method further includes:
s501: receiving a print preview request;
s502: typesetting the printed contents according to the printed font size and the actual paper width;
s503: displaying the typeset printing content;
s504: receiving a printing confirmation instruction;
s505: and printing according to the typeset printing content.
In this embodiment, printing device has the display module that can show the printing content, and this has broken through the design thinking that current printer can only print the content through the terminal preview, receives the restriction of portable intelligent printing device size, and the width of display module is more close to the width of the printing paper of assembly than the terminal, and the paper size that shows like this through display module, font size more can reflect real printing visual effect to can let the user preview before printing and print the effect, product experience is better.
Further, as shown in fig. 10, before receiving the confirmation printing instruction, the method further includes the following steps:
s601: receiving a word size adjusting instruction;
s602: increasing or decreasing the font size according to the font size adjusting instruction, and updating the readjusted font size into a new printing font size;
s603: rearranging the printed contents according to the new printed font size and the actual paper width;
s604: and displaying the rearranged printing content.
In this embodiment, before the printing apparatus starts printing, it is determined whether a font size adjustment instruction of the user is received, and if the font size adjustment instruction is received, it indicates that the user is not satisfied with the current print font size, and needs to be adjusted based on the received font size adjustment instruction. And increasing or decreasing the font size according to the font size adjusting instruction, updating the newly adjusted font size into a new printing font size, and rearranging again according to the new printing font size and the actual paper width. Therefore, the visual effect of the finally printed font and size is more in line with the requirements of users, and the use experience of products is improved.
For example, the printing device has a key for indicating "increase" or "decrease", and each time the user presses once, the number is increased or decreased by one on the basis of the current font size, and the printing device correspondingly adjusts and displays the font size by receiving the font size adjustment instruction of the user until the user adjusts the font size appropriately.
The invention also provides a portable intelligent printing device which comprises a printing module and a controller, wherein the controller is connected with the printing module and is used for executing the control method of any one of the above embodiments.
Further, the portable intelligent printing device further comprises an image acquisition module, a display module and an input module, wherein the image acquisition module, the display module and the input module are respectively connected with the controller, the image acquisition module is suitable for acquiring images, the display module is suitable for displaying images, and the input module is suitable for inputting information.
The present embodiment also provides a computer-readable storage medium, which stores an executable program, where the executable program can be executed by a processor of a device where the computer-readable storage medium is located, so as to implement the steps of any one of the above embodiments.
EXAMPLE III
The embodiment provides a portable intelligent printing device on the basis of the first embodiment and the second embodiment, and mainly solves the problems that the conventional portable intelligent printing device can only be provided with application programs developed by a manufacturer or a few cooperation manufacturers, but cannot be compatible with most application programs, and the universality is poor.
As shown in fig. 11, this embodiment provides a portable intelligent printing apparatus, which includes an operating system and a print output device, where a print control program is written in the operating system, and the print output device is used to perform a printing operation, where the print output device in this embodiment is a print module in the first embodiment and the second embodiment. The printing control program is provided with an SDK for driving the printing output device to execute printing operation and a standard interface for interfacing with an operating system.
And at least one application program is installed in the operating system, and the application program is used for receiving a printing instruction triggered by a user and calling the SDK through a standard interface of the printing control program so as to drive the printing output equipment to execute printing operation.
According to the portable intelligent printing device, the printing control program with the SDK is written in the operating system and the standard interface is provided, the application program installed in the operating system does not need to be embedded into the SDK, the printing function can be realized by directly driving the printing output equipment through the standard interface, and the compatibility of the portable intelligent printing device to different application programs is improved.
In a further aspect of this embodiment, the portable intelligent printing apparatus further includes:
a system print driving unit for providing a system print service program as a default driver for driving the print output apparatus;
and the switching unit is used for modifying the default driving program for driving the printing output equipment from the system printing service program to the printing control program.
Further, the portable intelligent printing device further comprises:
the user-defined printing service adding unit is used for sending a request for adding the user-defined printing service after the printing control program is started;
and the switching unit is used for disconnecting the drive port of the printing output equipment from the output port of the system printing service program and connecting the drive port of the printing output equipment to the output port of the printing control program after receiving the request of adding the custom printing service.
In the above-mentioned solution, the portable intelligent printing apparatus includes a system print driving unit for providing a system print service program, and when the SDK matching with the print output device has been embedded in the application installed in the operating system, the printing function can be realized by calling the system print service program.
In this embodiment, the printing control program with the SDK is written in the operating system, and the default driver for driving the printing output device is modified to the printing control program by the setting switching unit, so that the application program in which the SDK is not embedded can drive the printing output device to implement the printing function through the printing control program. When the operating system of the portable intelligent printer of this embodiment is written, an operating system in the prior art, such as an Android system, may be used, and only the rewritten printing control program is added, and meanwhile, the switching unit is added to implement the substitute operation of the printing control program for the system printing service, so that the purpose of no longer embedding the SDK in the application program can be achieved. And a brand-new operating system does not need to be opened again, and the method is easy to realize.
In a further aspect of this embodiment, the portable intelligent printing device further includes:
a feedback information sending unit for sending feedback information according to the running state of the printing output equipment;
and the display module is used for displaying the printing state of the file to be printed.
Specifically, the feedback information sending unit sends feedback information to an application program which issues a corresponding printing instruction, and the application program marks the printing state of the file to be printed according to the feedback information and displays the printing state through a display module.
In the scheme, the portable intelligent printing device can acquire the running state of the printing output equipment and display the printing state of the file to be printed to the user, so that the user can know the printing work progress in real time and use the file conveniently.
The embodiment also provides a control method of the portable intelligent printing device. After an application program installed in an operating system of the portable intelligent printing device receives a printing instruction triggered by a user, the SDK is called through a standard interface of the printing control program, so that the printing output equipment is driven to execute printing operation.
As shown in fig. 12, the specific process of the application driving the print output device to perform the printing operation includes:
the application program receives the setting information of a user and determines a file to be printed and printing information;
after receiving a printing instruction triggered by a user, an application program is in butt joint with a standard interface of a printing control program to call the SDK and issues the printing instruction comprising the file to be printed and the printing information;
and the printing control program receives the printing instruction and drives the printing output equipment to execute the printing operation of printing the file to be printed according to the printing information.
In this embodiment, the printing information includes a content range of printing, a scaling ratio of a file to be printed, a number of copies to be printed, and the like.
In the scheme, the application program does not need to be embedded with the SDK matched with the printing output equipment, and can be directly butted with a standard interface provided by the printing control program so as to call the SDK carried by the printing control program and further drive the printing output equipment to realize the printing function. The printing control program is written into the operating system, so that application programs developed by different manufacturers can be installed in the operating system of the portable intelligent printing device and printed by using the printing output equipment, the printing control program provides a standard interface which is in butt joint with the operating system, the application programs installed in the operating system can be in butt joint with the standard interface directly, and improvement on the printing control program is not needed. Therefore, the scheme of the embodiment improves the compatibility of the portable intelligent printing device to different application programs, and the application programs developed by a third party can be installed and used, so that the printing function can be realized.
On the other hand, the SDK is only integrated in the printing control program and is not embedded in the application program, when the SDK is updated, the printing control program only needs to be updated correspondingly, all the application programs using the printing function are not required to be updated synchronously, and the management of a plurality of application programs by an operating system is facilitated.
In a further aspect of this embodiment, the print control program further sends feedback information to the application program according to an operating state of the print output apparatus.
Preferably, the application program displays the printing state of the file to be printed through a display module of the portable intelligent printing device according to the feedback information.
In the scheme, the printing control program can also acquire the running state of the printing output equipment and further send the feedback information, and the application program acquires the printing state of the file to be printed according to the feedback information and displays the printing state through the display module, so that a user can conveniently know the printing state of the file to be printed in time.
Specifically, the feedback information includes "the print output apparatus is occupied", "the print output apparatus is in operation", "the print output apparatus is failed", "the print output apparatus is completed in operation", and the like. And if the current feedback information is 'the printing output equipment is occupied', the application program marks the file to be printed as 'waiting for printing' and displays the file through the display module. And if the current feedback information is 'the printing output equipment is in operation', the application program marks the file to be printed as 'printing' and displays the file through the display module. And if the current feedback information is 'failure of printing output equipment', the application program marks the file to be printed as 'printing failure' and displays the file to be printed through the display module. And if the current feedback information is that the printing output equipment finishes running, the application program marks the file to be printed as 'printing finished' and displays the file through the display module.
In a further aspect of this embodiment, the print control program, when receiving a plurality of print instructions, drives the print output apparatus to perform a plurality of print operations in a predetermined order.
Preferably, the printing instruction further includes a printing priority level, and the printing control program drives the printing output device to execute the corresponding printing operation in order of the printing priority level from high to low.
Preferably, for different print instructions of the same print priority level, the print control program drives the print output apparatus to execute the corresponding print operations in the order in which the print instructions are triggered.
In the above scheme, the printing control program drives the printing output device to execute a plurality of printing operations according to a predetermined sequence, so as to prevent the printing instructions from colliding and influencing the working process of the printing output device.
The printing control program controls the order of the printing operations executed by the printing output device according to the level of the printing priority level, wherein the printing priority level can be set by a user in advance, for example, the priority level is set in advance for a plurality of application programs, and the higher the priority level of the application program is, the higher the printing priority level of the issued printing instruction is.
The user may also set the print priority level when triggering a print instruction. For example, the print control program has received a plurality of print commands, and the print output apparatus is executing a print operation corresponding to one print command, at which time the user triggers another print command and sets its print priority level to the highest. After the printing output device finishes the currently executed printing operation, the printing control program drives the printing output device to firstly execute the printing operation corresponding to the newly started printing instruction, and then continuously execute the printing operation corresponding to the previously received printing instruction.
In a further scheme of this embodiment, a system printing service program is preset in the operating system as a default driver for driving the print output device, and the default driver is modified from the system printing service program to a print control program after the operating system is started;
preferably, the operating system is an Android system, and the standard interface is an Android system standard API.
In the prior art, most of the intelligent terminals adopt an Android system as an operating system, and the Android system is selected as the operating system of the portable intelligent printing device in the embodiment, so that most of application programs on the market can be compatible. A system printing service program is preset in an existing Android system to provide a printing function, but the existing Android system does not have an SDK, and the driving of a printing output device can be realized only by embedding the SDK in an application program.
In this embodiment, the printing control program is written into the operating system, and the printing control program can drive the printing output device instead of a system printing service program preset in the operating system, thereby realizing the compatibility of the portable intelligent printing device with an application program developed by a third party. In the scheme, the newly written printing control program is directly added into the existing operating system without rewriting the whole operating system or deleting and modifying the program in the existing operating system, so the method is easy to realize.
As shown in fig. 13, the specific process of the operating system modifying the default driver includes:
after the operating system is started, the printing control program is automatically started, and a request for adding the custom printing service is sent to the operating system;
and the operating system receives the request for adding the custom printing service, disconnects the drive port of the printing output device from the output port of the system printing service program and connects the drive port of the printing output device to the output port of the printing control program.
In the scheme, the printing control program is automatically started after the operating system is started, and the automatic modification of the default driving program is realized by sending the request for adding the customized printing service, so that the user operation is not needed, the intelligent printing control method is more intelligent, and the use by the user is facilitated.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (11)

1. A control method of a portable intelligent printing device is characterized in that: the portable intelligent printing device is provided with an operating system and a local memory;
acquiring image information of a wrong question;
analyzing and processing the acquired error image information and converting the error image information into error data;
adding the obtained error data and/or error image into a local database stored in a local memory;
synchronously uploading the wrong question data and/or wrong question images added and stored in the local database to a server side under the condition that a network state is detected;
after the uploading is judged to be finished, the error data and/or the images which are changed corresponding to the downloading server side are synchronously merged into a local database;
the portable intelligent printing device also comprises a printing output device;
a printing control program is written in the operating system, and the printing control program is provided with an SDK (software development kit) for driving the printing output equipment to execute printing operation and a standard interface for interfacing with the operating system;
after receiving a printing instruction triggered by a user, an application program installed in the operating system calls an SDK (software development kit) through a standard interface which is connected with the printing control program so as to drive a printing output device to execute printing operation;
a system printing service program is preset in the operating system and is used as a default driving program for driving the printing output equipment, and the default driving program is modified into a printing control program from the system printing service program after the operating system is started;
after the operating system is started, the printing control program is automatically started, and a request for adding the custom printing service is sent to the operating system;
and the operating system receives the request for adding the custom printing service, disconnects the drive port of the printing output device from the output port of the system printing service program and connects the drive port of the printing output device to the output port of the printing control program.
2. The control method of a portable intelligent printing device according to claim 1, characterized in that: after the operating system receives a printing instruction;
searching corresponding error question data of the preprinted error questions in a local database according to the ID of each error question and/or preset screening conditions;
and converting the acquired error data of the preprinted error into a binary image and transmitting the binary image to a printing module for printing and outputting.
3. The control method of a portable intelligent printing device according to claim 1, characterized in that: after the operating system receives a printing instruction;
obtaining an original picture of a preprinted error question;
carrying out binarization processing on the obtained original image to obtain a binarization image of a preprinted error question;
searching and matching in a local database according to the acquired binary image;
and previewing and displaying the matched pre-printed error binary image in the local database, and transmitting the image to a printing module for printing and outputting after receiving a confirmation instruction.
4. The control method of a portable intelligent printing device according to claim 2, characterized in that: the portable intelligent printing device also comprises a rendering module and a binarization processing module;
the rendering module draws and renders to form a rendering image of the preprinted wrong questions according to the wrong question data of the preprinted wrong questions searched in the local database;
and the binarization processing module is used for carrying out binarization processing on the rendered image of the pre-printed error question and transmitting the obtained binarization image of the pre-printed error question to the printing module for printing and outputting.
5. The method of controlling a portable intelligent printing device according to any one of claims 1 to 4, wherein:
the error question data comprises error question ID and/or error question content and/or error question fields and/or error question subject and/or student mastery degree and/or error question state and/or added timestamp information;
after receiving the modification instruction, the operating system searches for matching and displays wrong question data of the pre-modified wrong questions in a local database according to the received modification instruction;
modifying and adjusting the wrong question content and/or wrong question field and/or wrong question subject and/or student mastery degree and/or wrong question state of the pre-modified wrong question according to the received modification instruction;
acquiring modified error data and modifying the timestamp to update and store the modified error data and the modified timestamp in a local database;
when the network state is detected, the operating system can synchronize the error data updated and stored in the local database to the server, and simultaneously download and combine the error data changed by the server to the local database.
6. The method of controlling a portable intelligent printing device according to any one of claims 1 to 4, wherein:
after receiving the deleting instruction, the operating system searches for matching and displays wrong question data of the pre-deleted wrong questions in a local database according to the received deleting instruction;
modifying the state information of the pre-deleted fault in the local database from a default state to a deleted state, and updating and storing the updated state information of the pre-deleted fault and the deleted timestamp in the local database;
when a network state is detected, the server side acquires a pre-deletion error question with state information being a deletion state from the operating system and deletes the pre-deletion error question at the server side;
and after the server side judges that the pre-deletion fault is deleted, the operating system synchronously deletes the pre-deletion fault marked as a deletion state in the local database.
7. The method of controlling a portable intelligent printing device according to any one of claims 1 to 4, wherein:
the method comprises the steps that a plurality of portable intelligent printing devices log in the same network account, the portable intelligent printing devices are respectively in communication connection with a server side, and each portable intelligent printing device is provided with a local database for storing error data;
under the condition of no network, the plurality of portable intelligent printing devices can store the respective changed error data in respective local databases;
and under the condition that the network state is detected, the plurality of portable intelligent printing devices respectively upload the error data changed by the plurality of portable intelligent printing devices to the server side, and respectively download and merge the error data changed by the server side into the local databases of the plurality of portable intelligent printing devices.
8. The method of controlling a portable intelligent printing device according to any one of claims 1 to 4, wherein:
after each networking is detected, the operating system synchronizes the changed wrong questions to the server side in a multithread mode according to the change types, wherein the change types comprise adding wrong question data, modifying wrong question data and deleting wrong question data;
the server compares the error question last change timestamp T1 uploaded from the operating system with the corresponding error question last change timestamp T1' stored by the server: if T1 is judged to be later than T1', the server side correspondingly synchronizes and merges the error data of the error change in the operating system.
9. The method of controlling a portable intelligent printing apparatus according to claim 8, wherein: after the wrong question data is judged to be uploaded, the operating system sends a downloading request to the server;
in the downloading process: the operating system judges whether the local database corresponding to the error question data downloaded from the server exists: if yes, correspondingly synchronizing and modifying wrong data in the local database; if the data does not exist, adding error data in the local database correspondingly.
10. The control method of a portable intelligent printing device according to claim 9, characterized in that: and if the pre-downloaded wrong problem data amount is larger than the set value, the operating system downloads the changed wrong problem data from the server in batches according to the batch downloading program.
11. A portable intelligent printing apparatus using the control method according to any one of claims 1 to 10, comprising: the printing system comprises a controller, and a printing module and an operating system which are respectively connected with the controller.
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