CN114518852A - File printing method, file printing device, printing equipment, storage medium and program product - Google Patents

File printing method, file printing device, printing equipment, storage medium and program product Download PDF

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Publication number
CN114518852A
CN114518852A CN202210141716.8A CN202210141716A CN114518852A CN 114518852 A CN114518852 A CN 114518852A CN 202210141716 A CN202210141716 A CN 202210141716A CN 114518852 A CN114518852 A CN 114518852A
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China
Prior art keywords
printing
target
distance
uwb
print data
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CN202210141716.8A
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Chinese (zh)
Inventor
贝为炬
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Priority to CN202210141716.8A priority Critical patent/CN114518852A/en
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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
    • G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
    • G06F3/1203—Improving or facilitating administration, e.g. print management
    • 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
    • G06F3/1236—Connection management
    • 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
    • G06F3/1285—Remote printer device, e.g. being remote from client or server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/63—Location-dependent; Proximity-dependent
    • H04W12/64—Location-dependent; Proximity-dependent using geofenced areas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The application discloses a file printing method, a file printing device, printing equipment, a storage medium and a program product, and belongs to the technical field of printing. The method is applied to a printing device and comprises the following steps: receiving target printing data sent by first equipment; determining a first distance to a second device, the second device being associated with the first device; determining, by the second device, target print data in response to the first distance being less than the first distance threshold; based on the target print data, a file printing operation is performed. The file printing operation can be executed when a user holding the second device approaches to the printing device, so that the printing operation is executed when the user has the requirement of extracting the printed file, the condition that the printed data is leaked due to the fact that the user does not extract the printed file in time is avoided, and the safety of the printing process is guaranteed; meanwhile, confusion of printing data of different users can be avoided, and management of printed files is facilitated.

Description

File printing method, file printing device, printing equipment, storage medium and program product
Technical Field
The embodiment of the application relates to the technical field of printing, in particular to a file printing method, a file printing device, a storage medium and a program product.
Background
The printer is an output device of the computer device and is used for printing data transmitted by the computer device on a relevant medium; with the development of printing apparatuses, existing printing apparatuses can be connected to the internet, thereby realizing remote printing operations.
When the remote printing operation is executed, after the computer end receives the printing operation on the file, the printing file is transmitted to the printing equipment, and after the printing equipment receives the printing file, the printing operation can be immediately executed until the printing is finished.
Obviously, in the existing remote printing process, when a user does not extract a file in time, the file may be acquired by others, and the security of the printing process is further affected.
Disclosure of Invention
The embodiment of the application provides a file printing method and device, printing equipment, a storage medium and a program product. The technical scheme is as follows:
in one aspect, an embodiment of the present application provides a file printing method, where the method is applied to a printing device, and the method includes:
receiving target printing data sent by first equipment;
determining a first distance to a second device, the second device associated with the first device;
determining, by the second device, the target print data in response to the first distance being less than a first distance threshold;
And executing file printing operation based on the target printing data.
In another aspect, an embodiment of the present application provides a document printing apparatus, where the apparatus is applied to a printing device, and the apparatus includes:
the receiving module is used for receiving target printing data sent by first equipment;
a first determining module to determine a first distance to a second device, the second device associated with the first device;
a second determining module to determine, by the second device, the target print data in response to the first distance being less than a first distance threshold;
and the control module is used for executing file printing operation based on the target printing data.
In another aspect, an embodiment of the present application provides a printing apparatus, including: the device comprises a processor, a memory and a UWB component, wherein the processor is respectively electrically connected with the memory and the UWB component, the UWB component is used for establishing UWB communication with a UWB device, the memory stores at least one instruction, and the at least one instruction is used for being loaded and executed by the processor to realize the file printing method in the aspect.
In another aspect, an embodiment of the present application provides a computer-readable storage medium, in which at least one program code is stored, and the program code is loaded and executed by a processor to implement the file printing method according to the above aspect.
In another aspect, the present application provides a computer program product or a computer program, which includes computer instructions stored in a computer readable storage medium. The computer instructions are read by a processor of the computer device from a computer-readable storage medium, and the computer instructions are executed by the processor to cause the computer device to perform the file printing method provided in the various alternative implementations of the above aspects.
The technical scheme provided by the embodiment of the application can bring the following beneficial effects:
in the process of printing the file, after the printing equipment receives the target printing data sent by the first equipment, the printing equipment only executes the file printing operation on the target printing data when the second equipment associated with the first equipment meets a certain distance condition with the printing equipment, and compared with the method for immediately printing in the related technology, the method can execute the file printing operation when a user holding the second equipment approaches the printing equipment, so that the printing operation is executed when the user has a requirement for extracting the printing file, the condition that the printing data is leaked due to the fact that the user does not extract the printing file in time is avoided, and the safety of the printing process is ensured; meanwhile, confusion of printing data of different users can be avoided, and management of printed files is facilitated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 illustrates a schematic diagram of an implementation environment of an exemplary embodiment of the present application;
FIG. 2 illustrates a flow chart of a document printing method provided by an exemplary embodiment of the present application;
FIG. 3 illustrates a flow chart of a document printing method provided by another exemplary embodiment of the present application;
FIG. 4 illustrates a ranging process diagram according to an exemplary embodiment of the present application;
FIG. 5 illustrates a ranging process diagram according to another exemplary embodiment of the present application;
FIG. 6 is a schematic diagram illustrating a printing device transmitting and receiving signals according to an exemplary embodiment of the present application;
FIG. 7 illustrates a flow chart of a document printing method provided by another exemplary embodiment of the present application;
FIG. 8 illustrates a complete interaction flow diagram of a document printing process shown in one exemplary embodiment of the present application;
FIG. 9 is a schematic diagram showing the interaction of a computer terminal, a user UWB device and a printing device in a document printing process;
FIG. 10 is a block diagram showing a configuration of a document printing apparatus according to an embodiment of the present application;
fig. 11 is a block diagram illustrating a configuration of a printing apparatus according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of an implementation environment of an exemplary embodiment of the present application is shown, where the implementation environment includes a first device 110, a second device 120, and a printing device 130.
The first device 110 is a device having a function of remotely manipulating the printing device 130 to perform printing. The first device 110 may be a stationary device such as a desktop computer and a smart television, or may be a portable electronic device such as a smart phone, a tablet computer, and an e-book reader.
In this embodiment of the application, when the first device 110 has a print requirement, the first device 110 may interact with the second device 120 to perform Secure encryption on print data, and optionally, the first device 110 has a Secure Element (SE).
The second device 120 is associated with the first device 110, and in this embodiment, the second device 120 may indicate the print data transmitted by the first device 110 to the printing device 130. Alternatively, the second device 120 may belong to the same device as the first device 110, and the second device 120 may belong to a different device from the first device 110. Alternatively, the second device 120 may be a portable electronic device such as a smart phone, a tablet, a user card, a smart watch, and the like.
In the embodiment of the present application, the second device 120 may perform UWB communication with the printing device through an Ultra Wide Band (UWB) component. Alternatively, the UWB component may be separate from the second device 120, or the UWB component may be independent of the second device 120. That is, the second device 120 has a function of establishing UWB communication with the printing device when the UWB component is mounted or worn; when the second device 120 does not carry or have UWB components installed, the second device 120 may not be able to establish UWB communication with the printing device. Under this application scenario, the UWB component may be packaged as an accessory of the second device, for example, when the second device 120 is a smart phone, the UWB component may be a terminal accessory such as a mobile phone shell, a mobile phone protective case, a mobile phone pendant, and the like.
Alternatively, the UWB component may be disposed inside the second device 120, that is, the UWB component is disposed inside the second device 120, so that the second device 120 can establish UWB communication with the printing device 130 through the UWB component.
The printing apparatus 130 is an apparatus having a spatial location awareness capability that refers to: the printing apparatus 130 can perceive a spatial positional relationship between it and other apparatuses.
Alternatively, similar to the second device 120, the UWB component may be separate from the printing device 130, or the UWB component may be independent of the printing device 130. Alternatively, the UWB components may be disposed within the printing device 130.
In the embodiment of the present application, after the first device 110 sends the encrypted print data to the printing device 130, the printing device 130 may perform UWB communication with the second device 120 in real time, so as to interactively determine the distance between the second device 120 and itself, and further, when a specific distance condition is satisfied, perform secure decryption on the print data through UWB interaction, and further perform a file printing operation on the decrypted print data.
Referring to fig. 2, a flowchart of a document printing method according to an exemplary embodiment of the present application is shown, where the embodiment of the present application takes the application of the method to the printing apparatus shown in fig. 1 as an example, and the method includes:
Step 201, receiving target printing data sent by a first device.
In a possible implementation manner, when the first device has a printing requirement, the printing data to be printed is sent to the printing device, and correspondingly, the printing device receives the target printing data sent by the first device. In one illustrative example, when the first device receives a trigger operation for a print control, it is determined that a print demand exists.
Alternatively, the target print data may be plain text print data; optionally, in order to improve the transmission security of the print data between the first device and the printing device, the target print data may also be encrypted ciphertext print data.
The target print data may be picture data, document data, table data, or the like, which is not limited in this embodiment of the application.
A first distance is determined 202 between a second device, associated with the first device.
In the embodiment of the application, after the printing device receives the target printing data sent by the first device, the file printing operation is not executed immediately, but is executed only when a specific condition is met; in order to avoid a situation where the user does not cause the print file to leak even if the user extracts the print file from the printing apparatus, it is set to perform the printing operation when the user is close to the printing apparatus.
While it may be desirable to identify the distance of the user from the printing device in order to perform a printing operation when the user is close to the printing device, in one possible embodiment, the user typically holds a second device and determines the distance of the user from the printing device, i.e., a first distance between the printing device and the second device.
Since the first device that transmits the target print data to the printing device may not be the same as the second device, in order to make the printing device perform the file printing operation on the target print number transmitted by the first device when determining that the first distance between the first device and the second device is small, it is necessary to previously associate the first device and the second device so that the printing device can determine the target print data that needs to perform the file printing operation through the second device.
It should be noted that the first device and the second device may be the same device, and both the first device and the second device are mobile devices, for example, the first device and the second device may be a notebook computer, a smart phone, an e-reader, a tablet computer, or the like; optionally, the first device and the second device may also be different devices, and the first device may be a removable device or a non-removable device, for example, the first device may be a desktop computer, a notebook computer, a smart television, or the like, the second device may be a removable device, and the second device may be a smart phone, a mobile tag, a staff member, or the like.
Optionally, when the first device and the second device are the same device, after the first device sends the target print data to the printing device, the user may bring the first device close to the printing device, and correspondingly, the printing device may determine, in real time, the first distance to the first device (the second device), and then execute the file printing operation when it is determined that the distance to the first device (the second device) satisfies the specific distance condition.
Optionally, when the first device and the second device are different devices, and after the first device sends the target print data to the printing device, the user may bring the second device close to the printing device, and correspondingly, the printing device may determine, in real time, the first distance to the second device, and then execute the file printing operation when it is determined that the distance to the second device satisfies the specific distance condition.
In step 203, in response to the first distance being less than the first distance threshold, the target print data is determined by the second device.
In order to implement the file printing operation when the user approaches the printing device for a certain distance, in one possible implementation, the printing device acquires a first distance between the printing device and the second device in real time, and performs a subsequent file printing process when the first distance is determined to be smaller than a first distance threshold.
Since the file printing operation is not immediately executed after the first device sends the target print data to the printing device, the printing device may temporarily store the target print data in the specific storage area after receiving the target print data, and when it is determined that the distance between the second device and the printing device is smaller than the first distance threshold, the target print data to be printed needs to be determined, and in a case where the first device is associated with the second device, in a possible implementation manner, when the first distance between the second device and the printing device is smaller than the first distance threshold, the target print data sent by the first device may be determined by the second device associated with the first device.
Wherein the first distance threshold may be preset by a developer; optionally, in the application process, a manager of the printing device may also adjust the printing device according to actual requirements; illustratively, the first distance threshold may be 2 m.
In step 204, a document printing operation is performed based on the target print data.
In one possible embodiment, the document printing operation may be performed immediately after the target print data is determined; optionally, when the target print data is ciphertext print data, the target print data needs to be decrypted, and then the file printing operation is executed according to the decrypted print data.
To sum up, in the embodiment of the present application, in the process of printing a file, after receiving target print data sent by a first device, a printing device executes a file printing operation on the target print data only when a second device associated with the first device and the printing device meet a certain distance condition, and compared with the related art that the file printing operation is immediately performed, the file printing operation can be executed when a user holding the second device is close to the printing device, so that the printing operation is executed when the user has a requirement of extracting the print file, thereby avoiding a situation that the print data is leaked due to the fact that the user does not extract the print file in time, and ensuring the security of the printing process; meanwhile, confusion of printing data of different users can be avoided, and management of printed files is facilitated.
In order to enable the printing device to accurately find the target print data to be printed, in a possible implementation manner, the first device and the second device may be associated by the same identity information, so that the printing device may also determine the target print data by the identity information.
Referring to fig. 3, a flowchart of a document printing method according to another exemplary embodiment of the present application is shown, where the embodiment of the present application takes an example that the method is applied to the printing apparatus shown in fig. 1, and the method includes:
Step 301, receiving the target printing data and the target identity information sent by the first device, and associating the target printing data and the target identity information.
The target identity information is information used for uniquely representing the first equipment or the second equipment, and can be account information and work number signals possessed by users holding the first equipment and the second equipment; the target identity information may also be an apparatus identifier of the first apparatus, an apparatus identifier of the second apparatus, and the like.
In order to enable the second device associated with the first device to determine the target print data to be printed subsequently, in one possible implementation, when the first device sends the target print data, the target identity information and the target print data may be sent to the printing device together, and correspondingly, after receiving the target print data and the target identity information sent by the first device, the printing device may store the target print data and the target identity information in an associated manner.
Optionally, for example, the first device and the second device are different devices, and the target identity information is stored in the second device, when the first device has a printing requirement, the target identity information may be requested from the second device, correspondingly, the second device may feed the target identity information back to the first device after receiving the printing request of the first device, and the first device may send the target identity information and the target printing data to the printing device after receiving the target identity information.
Optionally, for example, when the first device and the second device are different devices and the target identity information is stored in the first device, when the first device has a printing requirement, a printing request may be sent to the second device, where the printing request carries the target identity information, and after receiving the target identity information, the second device may be stored in the security module, so that the target printing data may be determined through the target identity information in a subsequent printing process.
Optionally, if the first device and the second device are the same device, the target identity information may be directly stored in a security module of the first device (the second device), so that the target identity information may be obtained when the target print data is sent to the printing device and when the printing device performs a file printing operation.
A first distance to a second device associated with the first device is determined 302.
In order to make the printing device sense the nearby second device in real time, in one possible implementation, UWB components are provided in both the printing device and the second device, so that the printing device can locate the surrounding second device through the UWB components for the purpose of distance determination.
In an illustrative example, step 302 may include steps 302A-302C.
Step 302A, receiving a candidate UWB signal transmitted by at least one candidate device.
In a possible application scenario, a plurality of candidate devices may exist around the environment where the printing device is located, each candidate device may broadcast a UWB signal, and in order to avoid the need for the printing device to perform UWB communication with the plurality of candidate devices to determine the distance and direction, the printing device may be configured to receive candidate UWB signals transmitted by the peripheral candidate devices, but perform a positioning process only on candidate devices that satisfy a specific condition.
Note that the candidate device is a device having a UWB component, which may be a UWB tag, a user card, a smart phone, or the like.
Step 302B, in response to the signal strength of the candidate UWB signal being greater than the strength threshold, determining the candidate device corresponding to the candidate UWB signal as the second device.
When a user holding a candidate device has a document printing requirement or has a requirement for extracting a printed document from the printing device, and generally approaches the printing device, the signal strength of a UWB signal broadcast by the candidate device having the printing requirement should be higher, which is different from other candidate devices.
The intensity threshold may be set by a developer, or may be automatically adjusted based on the requirement of the actual working environment, and illustratively, the intensity threshold may be-50 dBm.
In step 302C, UWB communication is performed with the second device via the UWB component to determine a first distance to the second device.
In one possible implementation, after the printing device determines the second device from the plurality of candidate devices, UWB communication may be performed with the second device via the UWB component to determine the first distance between the second device and itself.
Alternatively, the process of the printing device determining the first distance between the second device and the printing device may use UWB positioning principles, for example, signal-Difference-of-Arrival Ranging (PDOA), Single-Sided Two-Way Ranging (SS-TWR), Double-Sided Two-Way Ranging (DS-TWR), PDOA + TWR, and the like.
In an exemplary example, the process of determining the first distance may include the following steps one to three, that is, step 302C may include the following steps one to three.
Firstly, sending a ranging request signal to a second device through a UWB component.
It should be noted that, in the case where positioning is not performed, the second device may be in a signal transmission state, and the printing device may be in a signal reception state; in the case where the printing apparatus needs to determine the distance from the second apparatus, the printing apparatus needs to switch to a signal transmitting state in order to transmit the ranging request signal to the second apparatus, and the second apparatus needs to switch to a signal receiving state in order to allow the second apparatus to receive the ranging request signal transmitted by the printing apparatus.
And secondly, receiving a ranging response signal sent by the second equipment.
In one possible implementation, after the printing device sends the ranging request signal to the second device, the second device may respond to the ranging request and feed back a ranging response signal to the printing device after monitoring the ranging request signal, and correspondingly, the second device may receive the ranging response information sent by the second device.
In the process of carrying out UWB communication between the printing equipment and the second equipment, after the printing equipment sends a ranging request signal to the second equipment, the printing equipment needs to be switched to a signal receiving mode to receive a ranging response signal sent by the second equipment; correspondingly, after the second device monitors the ranging request signal sent by the printing device, it is also required to switch to the signal sending mode so as to feed back the ranging response signal to the printing device.
Optionally, the ranging response signal may carry a message processing delay T between receiving the ranging request signal and sending the ranging response signalreply。
Optionally, the ranging response signal may not need to carry the message processing delay TreplyFor the second device, the message processing delay corresponding to the second device is generally fixed, so that the message processing delays corresponding to different second devices may be stored in the printing device in advance, and the printing device may obtain the message processing delay corresponding to the second device after receiving the ranging response signal fed back by the second device.
And thirdly, determining a first distance between the first device and the second device based on the received ranging response signal.
In one possible implementation, after the printing device receives the ranging response signal fed back by the second device, the first distance to the second device may be determined according to the time of sending the ranging request signal, the time of receiving the ranging response signal, and the message processing delay.
Taking SS-TWR as an example of the ranging principle, the process of determining the first distance may be as shown in fig. 4, which shows a schematic diagram of the ranging process shown in an exemplary embodiment of the present application. The process of the printing device 401 determining the first distance to the second device 402 is: the printing apparatus 401 is at t 1Sending a ranging request signal to the second device 402 through the UWB component at the moment; the second device 402 is at t2Receives the ranging request signal sent by the printing device 401 at the moment and delays the message processing by TreplyLast t3The ranging response signal is sent to the printing device 401 at a time, and the message processing may be delayed by TreplyFeeding back to the printing apparatus 401; the printing apparatus 401 at t4Receiving a ranging response signal fed back by the second device 402 at a moment; wherein a first distance between the printing device 401 and the second device 402 is calculated, i.e. the light is calculated between the printing device 401 and the second device 402Optical time of flight between the second devices 402, and as can be seen from fig. 4, optical time of flight T between the printing device 401 and the second devices 402prop＝(Tround-Treply) /2, wherein, TroundIs t1Time t and4the time difference between the moments; correspondingly, the first distance s ═ c × TpropWhere c is the propagation velocity of electromagnetic waves, which is close to the speed of light.
Taking PDOA as an example of the ranging principle, the process of determining the first distance may be as shown in fig. 5, which shows a schematic diagram of a ranging process according to another exemplary embodiment of the present application. Wherein, the antenna A and the antenna B are UWB components of the printing device, and the antenna C is UWB component of the second device; in the distance measurement process, the printing equipment sends a UWB signal to the second equipment through the UWB component, correspondingly, the second equipment feeds back the UWB signal to the printing equipment, and then the distance difference can be determined based on the phase difference that the UWB signal sent by the antenna C reaches the antenna A and the antenna B, so that the distance is obtained by using the flight time, and finally, the coordinate value of the second equipment is determined.
On the basis of fig. 5, the calculation process for determining (x, y) in the horizontal direction of the space may be:
Figure BDA0003507297080000081
then there are:
Figure BDA0003507297080000082
Figure BDA0003507297080000083
and: r is2＝x2+y2
Figure BDA0003507297080000084
Further calculation:
Figure BDA0003507297080000085
Figure BDA0003507297080000086
Figure BDA0003507297080000087
since d < λ/2, where λ is only about 3.75mm at 8 GHz; the half wavelength is about 1.9 mm. For measuring range r, r is much larger than d, so the square of r is much larger than the square of d when calculated, and thus can be ignored in the above equation. Thus, equation (2) can be converted to equation (3):
Figure BDA0003507297080000091
step 303, in response to the first distance being smaller than the first distance threshold, performing UWB communication with the second device through the UWB component, and acquiring the target identity information stored in the second device.
In a possible implementation manner, after the printing device determines a first distance between the first device and the printing device, the first distance may be compared with the first distance, and when the first distance is smaller than a first distance threshold, it further indicates that the user is closer to the printing device, and the file printing operation may be performed under the condition that the printing environment is ensured to be safe; in order to accurately find the target print data sent by the first device associated with the second device, when the printing device determines that the file printing operation can be executed, UWB communication needs to be performed with the second device through the UWB component to acquire the target identity information stored in the second device, and thus the target print data can be determined according to the target identity information.
Step 304, target print data is determined based on the target identity information.
In a possible implementation manner, the printing device stores the target printing data and the corresponding target identity information in association in advance, and correspondingly, in the printing process, after the printing device acquires the target identity information stored in the second device, the printing device may search the corresponding target printing data according to the target identity information.
Optionally, in other possible scenarios, when the target identity information is user account information corresponding to the second device and the first device holder, the printing device may log in a corresponding user account based on the target identity information after receiving the target identity information and the target print data sent by the first device, and further store the target print data under the user account; and then in the printing process, the printing equipment can acquire the target identity information fed back by the second equipment, and further log in the corresponding user account to search the corresponding target printing data.
In step 305, a file printing operation is performed based on the target print data.
In a possible implementation manner, when the printing device finds the corresponding target printing data, the file printing operation may be executed according to the target printing data under the condition that the printing environment is determined to be safe.
Optionally, in addition to executing the file printing operation when the user is close to the printing device, the security of the printing environment may be ensured to a certain extent, and in other scenes with higher requirements on security, the number of users around the environment where the printing device is located may also be determined, and it is further determined whether to immediately execute the file printing operation; in one possible embodiment, the printing apparatus determines the number of users located within the target range, and when it is determined that the number of users is lower than the number threshold, the document printing operation may be immediately performed based on the target print data; otherwise; when it is determined that the number of users is higher than the number threshold, the document printing operation is not performed immediately, but is performed when the holder of the second device is located at the printing device (the distance between the second device and the printing device is 0) to further secure the security of the print data.
Alternatively, with respect to the method in which the printing apparatus determines the number of users within the target range, the printing apparatus may call an image pickup device around the printing apparatus for recognition to determine the number of users within the target range around the printing apparatus before performing the document printing operation.
Optionally, the printing device may also send a UWB signal, and then determine the number of users within the target range according to the received reflected signal; in one possible embodiment, the printing apparatus may broadcast the UWB signal before determining that the document printing operation is to be performed, and after broadcasting the UWB signal, it is necessary to switch the UWB component to the signal receiving mode and determine the reflected signal received in the signal receiving mode, and may determine the number of users located within the target range based on the reception time at which the reflected signal is received and the number of received reflected signals.
The target range may be a circular range, a sector range, or the like in which the printing apparatus is a dot and the target distance is a radius, and illustratively, the target distance may be a value equal to or greater than a first distance, and if the first distance is 2m, the target distance may be 3 m.
As shown in fig. 6, a schematic diagram of a printing apparatus transmitting and receiving signals according to an exemplary embodiment of the present application is shown. When the printing device transmits UWB signals, the UWB component can be immediately switched to a receiving mode, and then the distance between the peripheral users and the printing device is determined according to the received reflected signals. In fig. 6, when the implementation is a transmission signal and the dotted line is a reception signal, the distance S between the printing apparatus and the peripheral user can be determined from the time difference Δ T between the peak time of the transmission signal and the peak time of the reception signal as the light speed C × Δ T (time difference between transmission and reception signal)/2.
Since the file printing operation can be executed when the user is closer to the printing device in this embodiment, in order to further ensure convenience of the user in printing the file, for example, the printing operation can be completed when the user just arrives at the printing device, so that the user can immediately take away the printed file when arriving at the printing device, in an exemplary example, step 305 may include steps 305A to 305C.
Step 305A determines a printing time period required to print the target print data, and determines a moving speed of the second device.
In a possible implementation manner, after the printing device determines the target print data, the document printing operation may not be immediately performed, and the printing time period required for printing the target print data and the walking speed of the second device holder, that is, the moving speed of the second device may be determined first, so as to determine when to perform the document printing operation according to the moving speed and the printing time period.
In order to determine the moving speed of the second device, the printing device is required to perform UWB communication with the second device after determining the target print data, so as to determine the real-time distance between the printing device and the second device, and then determine the moving speed of the second device according to the real-time distance and time.
Step 305B, determining a third distance based on the printing duration and the moving speed.
After the printing device determines the printing duration and the moving speed, the third distance can be determined according to the printing duration and the moving speed, and then the third distance can be determined as a critical value for executing the file printing operation.
In other possible embodiments, the setting mode of the first distance threshold may also adopt a determination mode of the third distance, and the determination mode is determined according to the user's dead distance and the printing duration, so that the printing waiting duration may be avoided on the premise of ensuring the printing safety.
In step 305C, in the case where the distance to the second device is a third distance, a file printing operation is performed.
In a possible real-time manner, the printing device may execute the document printing operation when the distance from the second device is determined to be the third distance, so that the user just completes the document printing operation when arriving at the printing device, and the printing time period for the user to wait for the printing device is reduced.
In response to completion of printing the target print data, a second distance to the second device is determined, step 306.
In a possible implementation manner, after the printing device completes the document printing operation, in order to avoid that the target printing data is still stored in the printing device and may be illegally acquired, after the printing device completes the printing operation, the second distance between the printing device and the second device may also be determined in real time, so that the target printing data may be deleted in time under the condition that the holder of the second device is far away from the printing device, and further, the security of the printing data is ensured.
Step 307, in response to the second distance being greater than the second distance threshold, deleting the target print data.
In a possible implementation manner, after the printing device determines that the second distance is greater than the second distance threshold, it may indicate that the holder of the second device does not need to perform other operations based on the target print data, and may delete the target print data in time to avoid leakage of the print data.
The second distance threshold may also be set by a developer, or may be manually adjusted according to an actual application scenario, and for example, the second distance threshold may be 3 m.
In this embodiment, the determination of the target printing data sent by the second device in association with the first device is realized by transmitting the target identity information, so as to ensure the ordered execution of the printing operation under the non-instant printing condition; further, by determining the number of users within the target range around the printing apparatus, it is possible to perform the document printing operation with a small number of users, thereby causing the document printing operation to be performed in a secure printing environment; in addition, after the file is printed, the distance between the second device and the printing device can be further determined, and then under the condition that a specific distance condition is met, the target printing data can be deleted in time, so that the risk of leakage of the printing data due to the fact that the printing data are stored in the printing device for a long time is further avoided.
In order to ensure the transmission security of the printing data between the first device and the printing device and the storage security of the printing data in the printing device, in one possible implementation, the printing data may be transmitted and stored in an encrypted manner, that is, the target printing data may be ciphertext printing data.
On the basis of fig. 3, as shown in fig. 7, step 303 may be replaced by step 701, and step 305 may include step 702 and step 703.
And step 701, responding to the fact that the first distance is smaller than the first distance threshold value, carrying out UWB communication with the second device through the UWB component, and obtaining target identity information and a decryption key.
In a possible implementation manner, when the first device has a printing requirement, UWB communication may be performed with the second device through the UWB component to acquire the target identity information and the encryption key, so that plaintext print data may be encrypted through the encryption key to obtain ciphertext print data (target print data), and then the ciphertext print data and the target identity information are sent to the printing device, and correspondingly, the printing device may store the ciphertext print data and the target identity information in an associated manner.
In a possible implementation manner, when the printing device determines that the first distance between the second device and the printing device is smaller than the first distance threshold, the printing device needs to perform UWB communication with the second device through the UWB component to obtain the target identity information and the decryption key.
The decryption key and the encryption key are a pair of keys. Optionally, the encryption key and the decryption key may be fixed in time, or may be dynamically changed, that is, different print data correspond to different encryption keys and decryption keys.
In step 702, the target print data is decrypted based on the decryption key to generate plaintext print data.
In a possible implementation manner, after the printing device acquires the target identity information and the decryption key from the second device, the target printing data may be determined according to the target identity information, and then the target printing data is decrypted according to the decryption key, so as to generate plaintext printing data.
In step 703, a file printing operation is performed based on the plaintext print data.
Correspondingly, after the printing device generates the plaintext printing data, the file printing operation can be executed based on the plaintext printing data.
In the embodiment, the printing data is encrypted, so that the transmission security of the target printing data between the first device and the printing device is ensured; and the corresponding decryption key can be acquired through interaction with the second device, so that the decryption operation of the target printing data is realized, and the normal execution of the file printing can be considered while the data transmission safety is ensured.
Referring to FIG. 8, a full interaction flow diagram of a document printing process is shown in one exemplary embodiment of the present application.
Step 801, when a printing requirement exists, the first device and the second device interact to acquire target identity information and an encryption key.
And step 802, the first device encrypts the plaintext printing data through the encryption key to obtain ciphertext printing data.
In step 803, the first device sends the ciphertext printing data and the target identity information to the printing device.
In response to receiving the target identity information and the ciphertext printing data sent by the first device, the printing device stores the target identity information and the ciphertext printing data in an associated manner in step 804.
In step 805, the printing device receives UWB signals transmitted from surrounding candidate devices in real time to determine a second device.
At step 806, the printing device UWB-communicates with the second device to determine a first distance from the second device.
In step 807, in response to the first distance being smaller than the first distance threshold, the printing device and the second device interactively obtain the target identity information and the decryption key.
Step 808, in response to receiving the target identity information and the decryption key, the printing device determines ciphertext printing data based on the target identity information, and decrypts the ciphertext printing data according to the decryption key to generate plaintext printing data.
In step 809, the printing device performs a file printing operation based on the plain text print data.
In response to printing of the plain text print data being completed, the printing device and the second device UWB-communicate to determine a second distance to the second device, step 810.
In response to the second distance being greater than the second distance threshold, the printing device deletes the plaintext print data, step 811.
Taking the first device as the computer side and the second device as the user UWB device as an example, as shown in fig. 9, an interaction diagram of the computer side, the user UWB device and the printing device in the document printing process is shown. A computer end 901 initiates a printing request, the corresponding computer end 901 interacts with a user UWB device 902 (including an SE module), acquires an encryption key, and encrypts and transmits printing data according to the encryption key; after receiving the print data sent by the computer 901, the printing device 903 may perform UWB communication with the user device 902 to determine a distance, and interact with the user UWB device 902 to obtain a decryption key when a specific distance condition is satisfied; so that the printing apparatus 903 can decrypt the print data based on the decryption key and then start a printing operation according to the decrypted print data.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Referring to fig. 10, a block diagram of a document printing apparatus according to an embodiment of the present application is shown. The device has the function of realizing the function executed by the printing equipment side in the method embodiment, and the function can be realized by hardware or by hardware executing corresponding software. As shown in fig. 10, the apparatus may include:
a receiving module 1001 configured to receive target print data sent by a first device;
a first determining module 1002 for determining a first distance to a second device, the second device being associated with the first device;
a second determining module 1003 for determining, by the second device, the target print data in response to the first distance being less than a first distance threshold;
a control module 1004 for performing a file printing operation based on the target print data.
Optionally, the printing device and the second device are both provided with UWB components;
the receiving module 1001 includes:
a first receiving unit, configured to receive the target print data and the target identity information sent by the first device, and associate the target print data with the target identity information;
The second determining module 1003 includes:
an obtaining unit, configured to perform UWB communication with the second device through the UWB component in response to that the first distance is smaller than the first distance threshold, and obtain the target identity information stored in the second device;
a first determining unit configured to determine the target print data based on the target identity information.
Optionally, the target print data is ciphertext print data;
the obtaining unit is further configured to:
carrying out UWB communication with the second equipment through the UWB component to acquire the target identity information and a decryption key;
the control module 1004 includes:
a generating unit configured to perform a decryption operation on the target print data based on the decryption key to generate plaintext print data;
a first control unit configured to execute a file printing operation based on the plain text printing data.
Optionally, the first determining module 1002 includes:
a second receiving unit, configured to receive a candidate UWB signal transmitted by at least one candidate device;
a second determining unit, configured to determine, in response to a signal strength of the candidate UWB signal being greater than a strength threshold, the candidate device corresponding to the candidate UWB signal as the second device;
A third determination unit configured to perform UWB communication with the second device through a UWB component, and determine the first distance to the second device.
Optionally, the third determining unit is further configured to:
transmitting, by the UWB component, a ranging request signal to the second device;
receiving a ranging response signal sent by the second device;
determining the first distance to the second device based on the received ranging response signal.
Optionally, the apparatus further comprises:
a third determining module for determining a second distance to the second device in response to completion of printing the target print data;
a deletion module to delete the target print data in response to the second distance being greater than a second distance threshold.
Optionally, the control module 1004 includes:
a fourth determination unit configured to determine a printing duration required to print the target print data, and determine a moving speed of the second device;
a fifth determining unit configured to determine a third distance based on the printing duration and the moving speed;
a second control unit configured to execute the file printing operation in a case where a distance from the second device is the third distance.
Optionally, the control module 1004 includes:
a sixth determining unit, configured to determine the number of users located within the target range;
a third control unit for executing the file printing operation based on the target printing data in response to the number of users being lower than a number threshold.
Optionally, the sixth determining unit is further configured to:
broadcasting a UWB signal and switching the UWB component to a signal reception mode;
determining a reflected signal received in the signal receiving mode;
determining the number of users located within the target range based on the reception time of the reflected signal.
To sum up, in the embodiment of the present application, in the document printing process, after receiving target print data sent by a first device, a printing device executes a document printing operation on the target print data only when a second device associated with the first device and the printing device meet a certain distance condition, and compared with the related art that the document printing operation is immediately executed, the document printing operation can be executed when a user holding the second device is close to the printing device, so that the printing operation is executed when the user has a requirement of extracting a print document, thereby avoiding a situation that the print data is leaked because the user does not extract the print document in time, and ensuring the security of the printing process; meanwhile, confusion of printing data of different users can be avoided, and management of printed files is facilitated.
It should be noted that: in the above embodiment, when the device implements the functions thereof, only the division of the functional modules is illustrated, and in practical applications, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to implement all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.
In one possible application scenario, the UWB component may be packaged as an internal antenna component of the printing device, and the UWB component is electrically connected to the printing device through an internal circuit board, so that the corresponding printing device may perform UWB communication with other devices through the UWB component.
Referring to fig. 11, a block diagram of a printing device 1100 according to an exemplary embodiment of the present application is shown. The printing device 1100 in the present application may include one or more of the following components: a processor 1110, a memory 1120, a UWB component 1130, and a printing component 1140, wherein the processor 1110 is electrically connected to the memory 1120, the UWB component 1130, and the printing component 1140, respectively.
Processor 1110 may include one or more processing cores. The processor 1110 connects various parts within the entire terminal printing apparatus 1100 using various interfaces and lines, and executes various printing functions and processing data of the printing apparatus 1100 by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 1120, and calling print data stored in the memory 1120.
The Memory 1120 may include a Random Access Memory (RAM) and a Read-Only Memory (ROM). Optionally, the memory 1120 includes a non-transitory computer-readable medium. The memory 1120 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 1120 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a print function, copy function, etc.), instructions for implementing the various method embodiments described above, and the like. The storage data area may also store print data, identification information, and the like created in use by the printing apparatus 1100.
The UWB component 1130 is configured to receive UWB signals broadcast by external UWB devices, so that the printing device 1100 may process the UWB signals through the processor to implement positioning processing of the UWB devices.
In the present embodiment, the memory 1120 has at least one instruction stored therein, and the at least one instruction is used for being executed by the processor 1110 to execute the document printing method as shown in the above embodiments.
In another possible embodiment, the UWB component may be packaged as an accessory to the printing device that is separate from the printing device 1100, and when the printing device 1100 is equipped with the accessory, the printing device 1100 is electrically connected to the accessory through the interface circuit so that the printing device 1100 can locate other UWB devices.
In addition, those skilled in the art will appreciate that the configuration of the printing device 1100 illustrated in the above figures does not constitute a limitation of the printing device 1100, and that a terminal may include more or less components than those illustrated, or some components may be combined, or a different arrangement of components. For example, the printing device 1100 further includes a sensor, a Wireless Fidelity (WiFi) module, a power supply, a bluetooth module, and other components, which are not described herein again.
The present application further provides a computer-readable storage medium having at least one instruction, at least one program, a set of codes, or a set of instructions stored therein, which is loaded and executed by a processor to implement the file printing method provided by any of the above-mentioned exemplary embodiments.
Embodiments of the present application provide a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the printing apparatus reads the computer instructions from the computer-readable storage medium, and executes the computer instructions, so that the printing apparatus executes the file printing method provided in the above-described alternative implementation.
It should be understood that reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. In addition, the step numbers described herein only exemplarily show one possible execution sequence among the steps, and in some other embodiments, the steps may also be executed out of the numbering sequence, for example, two steps with different numbers are executed simultaneously, or two steps with different numbers are executed in a reverse order to the order shown in the figure, which is not limited by the embodiment of the present application.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (13)

1. A document printing method, applied to a printing apparatus, the method comprising:
receiving target printing data sent by first equipment;
determining a first distance to a second device, the second device associated with the first device;
determining, by the second device, the target print data in response to the first distance being less than a first distance threshold;
based on the target print data, a file printing operation is performed.
2. The method according to claim 1, wherein a UWB component is provided in each of the printing apparatus and the second apparatus;
the receiving of the target printing data sent by the first device comprises:
receiving the target printing data and the target identity information sent by the first equipment, and associating the target printing data with the target identity information;
the determining, by the second device, the target print data in response to the first distance being less than a first distance threshold, comprising:
In response to the first distance being less than the first distance threshold, UWB communication is performed with the second device via the UWB component to obtain the target identity information stored in the second device;
determining the target print data based on the target identity information.
3. The method according to claim 2, wherein the target print data is ciphertext print data;
the obtaining the target identity information stored in the second device by UWB communication with the second device through the UWB component includes:
carrying out UWB communication with the second equipment through the UWB component to acquire the target identity information and a decryption key;
the executing of the file printing operation based on the target printing data comprises:
decrypting the target printing data based on the decryption key to generate plaintext printing data;
and executing file printing operation based on the plain text printing data.
4. The method of any of claims 1 to 3, wherein determining the first distance to the second device comprises:
receiving a candidate UWB signal transmitted by at least one candidate device;
In response to the signal strength of the candidate UWB signal being greater than a strength threshold, determine the candidate device corresponding to the candidate UWB signal as the second device;
UWB communication with the second device through a UWB assembly determines the first distance to the second device.
5. The method of claim 4, wherein said UWB communication with said second device via a UWB component, determining said first distance to said second device, comprises:
transmitting, by the UWB component, a ranging request signal to the second device;
receiving a ranging response signal sent by the second device;
determining the first distance to the second device based on the received ranging response signal.
6. The method according to any one of claims 1 to 3, wherein after performing a file printing operation based on the target print data, the method further comprises:
determining a second distance to the second device in response to completion of printing the target print data;
deleting the target print data in response to the second distance being greater than a second distance threshold.
7. The method according to any one of claims 1 to 3, wherein said performing a file printing operation based on said target print data comprises:
Determining a printing time length required for printing the target printing data, and determining a moving speed of the second device;
determining a third distance based on the printing duration and the moving speed;
and executing the file printing operation when the distance between the second device and the second device is the third distance.
8. The method according to any one of claims 1 to 3, wherein said performing a file printing operation based on said target print data comprises:
determining the number of users in the target range;
in response to the number of users being below a number threshold, performing the file printing operation based on the target print data.
9. The method of claim 8, wherein determining the number of users within a fourth range of distances around the printing device comprises:
broadcasting a UWB signal and switching the UWB component to a signal reception mode;
determining a reflected signal received in the signal receiving mode;
determining the number of users located within the target range based on the reception time of the reflected signal.
10. A document printing apparatus, the apparatus being applied to a printing device, the apparatus comprising:
The receiving module is used for receiving target printing data sent by first equipment;
a first determining module to determine a first distance to a second device, the second device associated with the first device;
a second determining module to determine, by the second device, the target print data in response to the first distance being less than a first distance threshold;
and the control module is used for executing file printing operation based on the target printing data.
11. A printing apparatus, characterized in that the printing apparatus comprises: a processor, a memory and a UWB component, said processor being electrically connected to said memory and said UWB component respectively, said UWB component being configured to establish UWB communication with a UWB device, said memory storing at least one instruction for being loaded and executed by said processor to implement a document printing method as claimed in any one of claims 1 to 9.
12. A computer-readable storage medium having stored therein at least one program code, the program code being loaded and executed by a processor to implement the document printing method according to any one of claims 1 to 9.
13. A computer program product or computer program, characterized in that it comprises computer instructions stored in a computer-readable storage medium, from which a processor reads and executes said computer instructions to implement the document printing method according to any one of claims 1 to 9.
CN202210141716.8A 2022-02-16 2022-02-16 File printing method, file printing device, printing equipment, storage medium and program product Pending CN114518852A (en)

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