Abstract:
The disclosure discloses an information processing method for an electronic device with a touch screen. The method includes: touch with a touch screen is detected; an information pickup area is set on the touch screen according to the touch; and information in the information pickup area is picked up according to an information pickup command and the picked-up information is stored. In the disclosure, existing information, such as an image or a signature, is picked up via an information processing device, such as a stylus, on a touch screen of an electronic device; and a user can autonomously control its image, signature and other information to display on the touch screen of the electronic device when needed. Therefore, great convenience is brought to users using a portable electronic device such as a tablet PC and a smart phone, and their personalized application can also be met to a great extent.

Description:
TECHNICAL FIELD 
       [0001]    The disclosure relates to technology for portable electronic devices, in particular to an information processing method and device for an electronic device with a touch screen. 
       BACKGROUND 
       [0002]    At present, there are two common schemes in the handwriting input field of mobile terminals: input via a resistive touch screen and input via a capacitive touch screen. 
         [0003]    An input principle of the resistive touch screen is: when a corresponding stylus is adopted for writing on such touch screen, a part where the stylus touches the touch screen may deform due to the change of a touch pressure between the stylus and the touch screen, so that the resistance of this point is changed to implement touch input of the resistive touch screen. The resistive touch screen is characterized in that it has no particular requirement on the stylus and a relatively low cost but it cannot support identification of multi-point touch. At present, the resistive touch screen is applied to a large number of middle-end and low-end mobile phones with touch screens. 
         [0004]    An input principle of the capacitive touch screen is: a capacitive sensing device is built in the screen to form an inductance with a charged object which gets close enough to the capacitive sensing device, and the capacitive sensing device absorbs partial inductive charge through the inductance, and determines a specific touch operation location by detecting the row and column where the absorbed inductive charge is located. The capacitive touch screen can support the multi-point touch but has a certain requirement on an input medium. Generally, only a charged object can implement input. For example, the input medium is generally a finger of a person. But now, some techniques for handwriting input on the capacitive touch screen using a special stylus also appear. 
         [0005]    Along with the emergence of high-end mobile terminal products such as tablet Personal Computers (PCs) and smart phones, the mobile terminal is increasingly becoming an important tool for daily record and writing of people. Therefore, people propose an increasingly strict requirement on each function of the mobile terminal. For example, for such product as a tablet PC or a smart phone with a large screen, people hope to utilize its accessary stylus to implement more functions besides existing text control and writing functions of the stylus, for example utilizing the stylus to implement a function like paper writing on the screens of these mobile terminals, such as drawing, signature and stamping. However, there is still no such technology in the related art. 
       SUMMARY 
       [0006]    The disclosure is desired to provide an information processing method and device for an electronic device with a touch screen. 
         [0007]    A purpose of the disclosure is implemented by the following technical solutions. 
         [0008]    An information processing method for an electronic device with a touch screen includes: 
         [0009]    touch with a touch screen is detected; 
         [0010]    an information pickup area is set on the touch screen according to the touch; and 
         [0011]    information in the information pickup area is picked up according to an information pickup command and the picked-up information is stored. 
         [0012]    Preferably, the method may further include: after the picked-up information is stored, 
         [0013]    touch with the touch screen is detected; 
         [0014]    an information display area is set on the touch screen according to the touch; and 
         [0015]    information corresponding to an information input command is fetched from the electronic device, and the information is displayed in the information display area. 
         [0016]    Preferably, the information in the information pickup area may be image information. 
         [0017]    More preferably, the method may further include: before the picked-up information is stored, image pre-processing is performed on the image information. 
         [0018]    More preferably, the image pre-processing may include more than one of followings: image compression processing, image binarization processing, gray level processing on an image and edge-directed image processing. 
         [0019]    An electronic device includes: a touch screen, a touch detection module, an information pickup area setting module, an information pickup module and a storage module, wherein 
         [0020]    the touch detection module is configured to detect touch with the touch screen; 
         [0021]    the information pickup area setting module is configured to set an information pickup area on the touch screen according to the touch; 
         [0022]    the information pickup module is configured to pick up information in the information pickup area according to an information pickup command and store the picked-up information; and 
         [0023]    the storage module is configured to store the picked-up information. 
         [0024]    Preferably, the electronic device may further include: an information display module, configured to fetch information corresponding to an information input command from the electronic device and display the information in the information display area. 
         [0025]    Preferably, the electronic device may further include: an image pre-processing module, which is connected between the information pickup module and the storage module and is configured to pre-process image information, in order to store the acquired information to the storage module by the information pickup module. 
         [0026]    An information processing method for an electronic device with a touch screen, includes: 
         [0027]    touch with a touch screen is detected; 
         [0028]    an information pick-up area is set on the touch screen according to the touch; 
         [0029]    information in the information pickup area is picked up according to an information pickup command; and 
         [0030]    the picked-up information is transmitted to an information processing device. 
         [0031]    Preferably, the method may further include: after the picked-up information is transmitted to the information processing device, 
         [0032]    touch with the touch screen is detected; 
         [0033]    an information display area is set on the touch screen according to the touch; 
         [0034]    information is received from the information processing device; and 
         [0035]    the received information is displayed in the information display area. 
         [0036]    Preferably, the information in the information pickup area may be image information. 
         [0037]    More preferably, the method may further include: before the picked-up information is stored, 
         [0038]    image pre-processing is performed on the image information. 
         [0039]    More preferably, the image pre-processing may include more than one of followings: image compression processing, image binarization processing, gray level processing on an image and edge-directed image processing. 
         [0040]    An electronic device includes: a touch screen, a touch detection module, an information pickup area setting module, an information pickup module and an information transmission module, wherein 
         [0041]    the touch detection module is configured to detect touch with the touch screen; 
         [0042]    the information pickup area setting module is configured to set an information pickup area on the touch screen according to the touch; 
         [0043]    the information pickup module is configured to pick up information in the information pickup area according to an information pickup command; and 
         [0044]    the information transmission module is configured to transmit the picked-up information to the information processing device. 
         [0045]    Preferably, the electronic device may further include: a storage module, which is connected with the information pickup module and is configured to store the picked-up information. 
         [0046]    More preferably, the electronic device may further include: an information display module, configured to acquire information corresponding to an information input command from the information processing device and display the information in the information display area. 
         [0047]    More preferably, the electronic device may further include: an image pre-processing module, which is connected between the information pickup module and the storage module and is configured to pre-process an image, in order to store the acquired information to the storage module by the information pickup module. 
         [0048]    Preferably, the information transmission module may be a capacitance detection device which exchanges information with an electric field output circuit of the information processing device. 
         [0049]    An information processing device for an electronic device with a touch screen includes: a power module, a command input module, a control module, a transmission module and a storage module, wherein 
         [0050]    the power module is configured to supply power for the command input module, the control module, the transmission module and the storage module; 
         [0051]    the command input module is configured to input a user command; 
         [0052]    the control module is configured to control the transmission module and the storage module in response to and in accordance with the user command; 
         [0053]    the transmission module is configured to exchange information with the electronic device under control of the control module; and 
         [0054]    the storage module is configured to store the information. 
         [0055]    Preferably, the transmission module may include: a data interface, configured to acquire information from the electronic device. 
         [0056]    More preferably, the transmission module may further include: an electric field output circuit, configured to exchange information with a capacitance detection device of the electronic device. 
         [0057]    More preferably, the transmission module may further include: a pixel output unit, configured to transmit the information exchanged with the capacitance detection device in a serial data transmission way or a parallel data transmission way. 
         [0058]    It can be seen from the technical scheme of embodiments of the disclosure that, in the disclosure, existing information, such as an image or a signature, is picked up via an information processing device, such as a stylus, on a touch screen of an electronic device; and a user can autonomously control its image, signature and other information to display on the touch screen of the electronic device when needed. Therefore, great convenience is brought to users using a portable electronic device such as a tablet PC and a smart phone, and their personalized application can also be met to a great extent. The disclosure can be applied to but is not limited to the following aspects: 1. taking notes for a student; 2. marking text contents on a tablet PC for a white-collar worker in a meeting; and 3. marking special contents for students during projector presentation using a tablet product, and other scenarios. Therefore, the disclosure has a great application value. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0059]      FIG. 1  is a schematic diagram showing image information pickup implemented by a stylus in an embodiment of the disclosure; 
           [0060]      FIG. 2  is a schematic diagram showing image input implemented by a stylus in an embodiment of the disclosure; 
           [0061]      FIG. 3  is a schematic diagram showing a structure of a stylus provided by an embodiment of the disclosure; 
           [0062]      FIG. 4  is a schematic diagram showing of operation of image information pickup implemented by a stylus provided by an embodiment of the disclosure; 
           [0063]      FIG. 5  is a schematic diagram showing an operation of image information input implemented by a stylus provided by an embodiment of the disclosure; 
           [0064]      FIG. 6A  is a flowchart of an image information pickup method provided by an embodiment of the disclosure; 
           [0065]      FIG. 6B  is a flowchart of an image information input method provided by an embodiment of the disclosure; 
           [0066]      FIG. 7  is a schematic diagram showing a structure of a stylus provided by another embodiment of the disclosure; and 
           [0067]      FIG. 8  is a schematic diagram showing a stamping face through which image information is input in a stamping way by a stylus provided by an embodiment of the disclosure. 
       
    
    
     DETAILED DESCRIPTION 
       [0068]    The technical solution of the disclosure is further elaborated below with reference to the drawings and specific embodiments, in order to enable those skilled in the art to better understand and implement the disclosure, but the disclosure is not limited by recited embodiments. 
         [0069]    An information processing method for an electronic device with a touch screen provided by some embodiments of the disclosure is divided into an information pickup process and an information display process during implementation. Here, the information display process can also be referred to as an information input process. In the embodiments, the information generally refers to image information, a pickup process of image information refers to a process of picking up an image or signature displayed on a screen of an electronic device and saving the picked-up data, and an input process of image information refers to a process of selecting a proper location on a screen of an electronic device through an information processing device to directly spray saved image information, such as an image or a signature, to the location as a marker. 
         [0070]    Here, it should be noted that the electronic device in the text generally refers to but is not limited to: a tablet PC, a mobile phone, a Personal Digital Assistant (PDA) and the like and that the information processing device in the text refers to a device, such as a stylus, used in conjunction with the tablet PC, the mobile phone or the PDA. The spirit of the disclosure will be elaborated by means of a stylus in the embodiments of the disclosure. 
         [0071]      FIG. 1  is a schematic diagram showing image information pickup implemented by a stylus in an embodiment of the disclosure. With reference to  FIG. 1 , a device for sending an information pickup command may be a stylus or an electronic device. An information pickup area needs to be selected by the stylus, and after image information in the information pickup area is picked up by the electronic device, the electronic device can store the image information in the following two ways: 
         [0072]    1. the image information is transmitted to the stylus for storage by Electron Microscopy (EM) scanning, infrared transmission, Bluetooth transmission, a Universal Serial Bus (USB) and in other transmission ways; and 
         [0073]    2. the image information is directly stored to the electronic device. 
         [0074]    However, no matter which storage way is adopted, before the image information is stored, image pre-processing can be performed on the image information, such as compression processing, binarization processing, grey level processing and edge processing, in order to reduce data volume for storage and transmission and speed up operation response. 
         [0075]      FIG. 2  is a schematic diagram showing image input implemented by a stylus in an embodiment of the disclosure. Likewise, a device for sending an information input command may be a stylus, or an electronic device, such as a mobile phone. When a user selects an information displaying area on a screen of an electronic device through the stylus, image information interested by the user will be displayed in the information displaying area. It should be noted that, with reference to  FIG. 2 , when the image information is stored in the stylus by the aforementioned storage ways, the image information firstly needs to be transmitted from the stylus to the electronic device by a transmission way of followings: Bluetooth transmission, infrared transmission and Near Field Communication (NFC) transmission, or by a way of exchanging information between an electric field output circuit and the capacitive screen or the touch screen of the electronic device, or by a stamping way. Wherein, the stamping way will be elaborated below. 
         [0076]      FIG. 3  is a schematic diagram showing a structure of a stylus provided by an embodiment of the disclosure. As shown in  FIG. 3 , the whole stylus internally includes: a power module  101 , a transmission module  104 , a storage module  102  and a control module  103 , wherein 
         [0077]    the power module  101  is configured to supply power for a normal operation of other all modules, which can be implemented via a build-in battery or an external charging connection; 
         [0078]    the transmission module  104  is configured to: acquire image data to be picked up from an electronic device and forward the image data to the storage module  102 ; or transmit image information data stored in the storage module  102  to the electronic device via the control module  103 ; and 
         [0079]    the storage module  102  is configured to: store the image information data in the stylus; and input the image information data into the stylus  10  in cooperation with the transmission module  104  under the control of the control module  103 , or output the image information data in the stylus  10  to the electronic device in cooperation with the transmission module  104  under the control of the control module  103 . 
         [0080]    Of course, the stylus  10  further includes an input stylus nib which has a normal input structure of the stylus  10 . In an embodiment of the disclosure, the input stylus nib can serve as capturing or selecting an image on a screen of an electronic device and outputting the image to a specified location of the screen of the electronic device. 
         [0081]      FIG. 4  is a schematic diagram showing an operation of image information pickup implemented by a stylus provided by an embodiment of the disclosure. According to  FIG. 4 , a corresponding image pickup process is as follows. 
         [0082]    A user operates a mobile terminal  20  to enter an image pickup mode. 
         [0083]    The user utilizes a stylus  10  to operate on the screen  201  of an electronic device  20  to draw a stylus operation line  208 , which is taken as a diagonal line to form a rectangular area by the mobile terminal; and the electronic device  20  sets the rectangular area as an information pickup area  209 . Of course, the information pickup area  209  can be set in various ways, for example, the user can delineate an interested area through the stylus  10  to take the delineated area as an information pickup area, or the user can set an information pickup area in an information pickup way based on image processing. The aforementioned setting method is not limited here. 
         [0084]    The electronic device  20  stores image information data in the information pickup area  209 , with the advantages as follows: (1) the transmission module  104  of the stylus  10  can be omitted to reduce a cost to some extent; and (2) the electronic device  20  can store more image information due to its larger storage capacity, so that a user can select image information according to a specific application scenario. However, directly storing image information to the electronic device  20  also has the following problems: (1) a selection-and-operation process implemented by the user on the electronic device  20  is relatively complicated; and (2) the stylus  10  cannot sign or mark like this on other electronic devices  20 , so as to narrow an application range to users. 
         [0085]    Furthermore, image information can be also transmitted to the transmission module  104  of the stylus  10  through an information transmission module of the electronic device  20 ; and after the image information is received by the stylus, the stylus stores image information data, so as to solve the aforementioned two problems. 
         [0086]      FIG. 5  is a schematic diagram showing an operation of image information input implemented by a stylus provided by an embodiment of the disclosure. According to  FIG. 5 , a corresponding image information input process is as follows. 
         [0087]    A user selects to add a marker or a signature on an electronic device  20 . 
         [0088]    The user utilizes the stylus to select a point where the marker or the signature will be sprayed, and then clicks a screen  201 . 
         [0089]    An information transmission module of the electronic device  20  transmits handshake information to a transmission module of the stylus, wherein the information transmission module of the electronic device  20  and the transmission module of the stylus both may be specifically a data transmission interface. 
         [0090]    After the handshake information is received by the transmission module of the stylus, the transmission module of the stylus transmits image information stored in the stylus to a data transmission interface of the electronic device  20 . 
         [0091]    After image information data is received by the electronic device  20 , the electronic device  20  displays the image information data at the location specified by the stylus to complete a display or spraying process of the image information. 
         [0092]      FIG. 6A  is a flowchart of an image information pickup method provided by an embodiment of the disclosure. As shown in  FIG. 6A , the method includes the following steps: 
         [0093]    Step  101 : it is prepared; 
         [0094]    Step  102 : a user selects, on a certain interface of an electronic device, to enter an image capturing mode from an operation User Interface (UI) of the electronic device; 
         [0095]    Step  103 : when the image is still, the user utilizes a stylus to select an image area to be captured and to capture an image; 
         [0096]    Step  104 : the electronic device processes information of the captured image, and encapsulates the information as a standard image format; 
         [0097]    Step  105 : the image is stored in a storage module corresponding to the electronic device or the stylus in order to be called during subsequent input; and 
         [0098]    Step  106 : it is ended. 
         [0099]      FIG. 6B  is a flowchart of an image information input method provided by an embodiment of the disclosure. As shown in  FIG. 6B , the method includes the following steps: 
         [0100]    Step  201 : it is prepared; 
         [0101]    Step  202 : a user selects, on a certain interface of an electronic device, to enter an image pasting mode from an operation UI of the electronic device; 
         [0102]    Step  203 : a stylus is utilized to select a location where an image is to be pasted on the screen of the electronic device; 
         [0103]    Step  204 : captured images stored in the electronic device or the stylus are acquired, and an image to be pasted is selected from the captured images; 
         [0104]    Step  205 : the electronic device sprays the acquired image at the location selected by the stylus and stores the processing result; and 
         [0105]    Step  206 : it is ended. 
         [0106]    In the aforementioned specific implementation process of the embodiments of the disclosure, many operations are implemented via the electronic device. When a user utilizes the stylus to capture and input an image, if most of the operations can be implemented by the stylus and the user does not need to switch between the stylus and the electronic device, there will necessarily be better user experience. 
         [0107]    In view of this, another embodiment of the disclosure provides a new information processing device, i.e., a stylus  10 .  FIG. 7  is a schematic diagram showing a structure of a stylus provided by another embodiment of the disclosure. As shown in  FIG. 7 , the stylus  10  includes: a power module  101 , a storage module  102 , a data interface  106 , a command input module  105 , a control module  103  and an electric field output circuit  104 . The power module  101  is configured to supply necessary power to various parts of the stylus  10  via a battery, in a wired charging mode or in other modes. 
         [0108]    The data interface  106  refers in particular to a USB interface in the embodiment, and is connected with the storage module  102  and is configured to transmit an image in an electronic device to the storage module  102  of the stylus  10  via a USB or in another way. 
         [0109]    The command input module  105  is configured to provide a channel for inputting a command to a user, for example, the command input module  105  may include a plurality of operation buttons, may include an operation button for selecting an image from a memory and a control button for outputting an image to the electronic device, and even may also include a button for controlling the stylus  10  to start an image capturing operation. 
         [0110]    The control module  103  is a central control unit of the whole stylus  10 , and is mainly configured to: translate an operation of the command input module  105  into modulation information for signal transmission, and transmit the modulation information to the electric field output circuit  104 ; and encode a selected image according to an operation of the user and transmit the encoded image to the electric field output circuit  104 . 
         [0111]    The electric field output circuit  104  is configured to output electric fields corresponding to the modulation information and the encoded image transmitted by the control module  103  to a touch screen of the electronic device. 
         [0112]    Image pickup and input processes of the stylus described in  FIG. 7  on an electronic device are as follows. 
         [0113]    The image pickup process is: 
         [0114]    a user operates the stylus through operation buttons of the stylus to transmit information to a touch screen of the electronic device and to control the electronic device to capture an image, wherein the touch screen is a capacitive screen and includes a capacitance detection device; and 
         [0115]    after the image is captured by the electronic device, the electronic device transmits captured image information to the stylus through a data interface, and the stylus stores the captured image information. 
         [0116]    The image input process is: 
         [0117]    the user operates the stylus through operation buttons of the stylus to transmit corresponding information to the capacitance detection device of touch screen of the electronic device; 
         [0118]    after the information is received by the electronic device, the electronic device prepares for processing, such as freezing a current image; 
         [0119]    the stylus fetches corresponding image information from a storage unit of the stylus, and after the image information is modulated and encoded by a control unit of the stylus, the stylus transmits the processed image information to the electric field output circuit, and controls the electric field output circuit to transmit the corresponding image information to the capacitance detection device of touch screen of the electronic device; 
         [0120]    the electronic device identifies the image information based on a change of the capacitance detection device of the touch screen; and 
         [0121]    the electronic device displays the acquired image information in a location specified by the stylus. 
         [0122]    In the aforementioned embodiment, image information data of the electric field output circuit can be output either in a serial mode or in a parallel mode. The serial mode refers to: input is only made to a capacitance detection device and pixels are input one by one. The serial mode takes a long time, but a structure corresponding to the serial mode is simple, for example, the stylus can merely use a common stylus nib structure. 
         [0123]    The parallel mode is similar to stamping, as shown in  FIG. 8 . Namely, the part of the stylus for inputting image information data has a shape similar to a stamper. A stamping face of the stylus is divided into multiple pixel output units. The density of the pixel output units may refer to that of the capacitance detection device of touch screen of the electronic device. Therefore, when the stamp-like stylus is pressed on the screen of the electronic device, one pixel output unit can just correspond to one capacitive sensing device. 
         [0124]    As shown in  FIG. 8 , after the stamping face of the stylus is pressed on the screen of the electronic and image information data are output, each pixel output unit is only responsible for transmitting image data in a small image area where the each pixel output unit is located to a corresponding capacitance detection device of the electronic device. The stylus collects the image data received respectively by the capacitance detection devices within the whole stamping area, arranges the image data to form a whole image, and displays the whole image, thereby greatly saving transmission time. In addition, operating experience is similar to the stamping, which fairly accords with a usage habit of users. 
         [0125]    The above are only preferable embodiments of the disclosure, and are not intended to limit the scope of the disclosure. Any equivalent structure or flow transformation made using the content of the description and drawings of the disclosure, or direct or indirect application thereof to other related technical fields shall fall within the scope of protection of the disclosure similarly.