CN114651220A

CN114651220A - Electronic equipment with double display screens

Info

Publication number: CN114651220A
Application number: CN202080011706.1A
Authority: CN
Inventors: 高秋生
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-19
Filing date: 2020-07-28
Publication date: 2022-06-21
Also published as: WO2021034461A1

Abstract

An electronic device with dual display screens has a second touchable display screen for a tablet, e-reader/e-notepad or smartphone. The original display screen or the second display screen may use electronic ink or LED/OLED type display technology. The first screen uses a combination of non-electronic ink type display technologies and the second screen uses electronic ink type display technologies, which, depending on the application, may have the dual advantages of power savings and high quality graphics/wider color gamut afforded by the two display technologies. The application displayed on the second screen has only readable permissions, simplifying the file management system. A virtual keyboard with a virtual mouse pad and a handwriting touch pad provides a variety of convenient input modes from regular character input to handwriting, drawing and signing. If the keyboard of a traditional portable or desktop computer is changed into a touch display screen, the traditional portable or desktop computer can be used as a notebook/desktop computer and a tablet computer alternately at the same time, and a plurality of convenient input modes from keyboard input to handwriting, drawing, signature and the like are provided. The new device with double screens provides the best user experience when the user reads and writes notes, and can conveniently input, store and inquire information.

Description

Electronic equipment with double display screens

Title:

electronic equipment with double display screens for tablet personal computer and smart phone

The technical points are

The invention mainly relates to the combination of the advantages of an electronic ink display screen, an IPS LCD display screen and an OLED display screen, and the advantages of an electronic reader, a tablet computer and a notebook computer. The electronic ink type display technology is more power-saving, and does not have light under the irradiation of sunlight, so that eyes can read more comfortably. The IPS LCD or OLED display screen has wider viewing angle and better color updating. The e-reader provides the best user experience as reading a paper book or note; the notebook computer provides the best user experience when the user inputs the data through the physical keyboard and the eyes look at the screen at a certain distance and at a certain angle; tablet computers are lighter than notebook computers and facilitate the use of fingers or pens. This device provides all the advantages of e-readers, tablets and laptops.

The novel device has four working modes, wherein one mode is a pure tablet computer mode, and the other mode is a pure electronic reader mode. The third mode is a common working mode of the electronic reader, the notebook computer and the tablet computer. The fourth mode is equivalent to a notebook computer without a mouse, and a virtual keyboard is realized on the electronic ink screen. The best working state of the double-screen mode is that a user reads a file from an electronic ink screen and inputs contents in a tablet computer. This state corresponds to the user writing a note while reading a book.

The new device can utilize most of the hardware of the tablet computer with little additional cost, and therefore the weight of the device is similar to that of the tablet computer. Most of the modifications are input/output, display card and operating system parts of the tablet computer, and need to support multiple inputs and multiple screens simultaneously.

Background information

At present, most of tablet personal computers and smart phones use IPS LCD or OLED display technologies, consume electricity quickly and are meshes in the sun. Most electronic readers use electronic ink-based display technology, consume low power and are out of mesh in sunlight. Although electronic readers provide the same user experience as reading a paper book, most electronic readers are only available for reading, with limited input capabilities. In schools and offices, most people need to write notes while reading a book. Tablet computers are convenient to use with fingers or pens, and inconvenient if there are many keyboard entries. The notebook computer is provided with a physical keyboard which is heavy, but is convenient for a large amount of keyboard input. This device can offer all the advantages of the device in different operating modes according to the needs of the user, but the device is also lighter. New devices will attract people to give up paper books and notebooks.

Summary of the invention

The invention aims to combine the advantages of an electronic ink display screen and IPS LCD and OLED display screens, so that the device can work as an electronic reader, a tablet computer, a notebook computer or both the electronic reader and the tablet computer, thereby providing various device conveniences for users. The electronic ink display technology is more power-saving, light is not generated under the irradiation of sunlight, so that eyes can read more comfortably, and an IPS LED or OLED display screen has a wider viewing angle, better color updating and the like.

According to the invention, the new device has four operating modes, one mode is a pure tablet computer mode which is easy to use fingers and pens, and the other mode is a pure electronic reader mode which consumes very little power and provides paper book type user experience. The third mode is two modes, namely an electronic reader/tablet computer and a notebook computer/tablet computer. The best working state of the dual-screen mode is that a user reads a file from an electronic ink screen and inputs contents on a tablet computer. This state corresponds to a state in which the user reads and writes notes, and the user can inquire about information more conveniently than a paper book and a notebook. The fourth mode is equivalent to a notebook computer, and the electronic ink screen realizes a large-size virtual keyboard, and meanwhile, the virtual keyboard on the tablet computer is abandoned.

This device will attract people to give up paper books and paper notebooks, thus saving a lot of paper to the world.

According to the invention, compared with a common tablet computer, the new device does not need much extra hardware, so the weight of the device is similar to that of the tablet computer, and most of the modifications are input/output, display card and operating system parts of the tablet computer, and the simultaneous multiple input and multiple screen display are required to be supported.

According to the invention, the new device connects the GPUs with the electronic ink screen via a computer connection line, one end of which is inserted into the interface of the tablet computer and the other end of which is inserted into the interface of the electronic ink screen. A leather or plastic jacket or a rotatable hinge may couple the electronic ink screen and the tablet computer together. The electronic ink screen is detachable, and after the electronic ink screen is detached, the new equipment can work like a normal tablet computer.

According to the invention, the new device can store and query the electronic book or the electronic notebook at the device end or the cloud end.

According to the invention, the new device can be used as both an electronic reader and a smart phone.

Description of the drawings (3 pages of the drawing)

Fig. 1 is a top view of the new device from top to bottom when laid flat on a table.

Fig. 2 is a three-dimensional view of a tablet computer lying flat on a desk and an electronic ink screen standing at an obtuse angle on the desk.

Fig. 3 is a three-dimensional view of the electronic ink screen lying flat on a desk and the tablet pc standing at an obtuse angle on the desk. The device is equivalent to a notebook computer, and a virtual keyboard is realized on an electronic ink screen.

The following are details of the main components of the apparatus.

1. A touchable electronic ink screen has an interface for computer connection.

2. The tablet computer is provided with an interface for connecting a computer connecting wire with the electronic ink screen, and is provided with a touchable screen with a virtual keyboard to support pen or electronic pen input.

3. And the computer connecting wire is used for connecting the tablet personal computer and the electronic ink screen.

4. And the switch is used for controlling the working mode of the equipment and has four positions, the left position is in a notebook computer mode, the left second position is in an electronic reader mode, the right second position is in a double-screen mode, and the right position is in a tablet computer mode.

5. When an icon of a control file is displayed on the electronic ink screen, the file under the icon is displayed or an application under the icon is run by touching the icon.

6. An icon of a control file displayed on the tablet computer. Touching an icon may display a file or run an application under the icon.

7. Control icons indicating battery power, network connections, etc.

8. A hinge coupling the tablet computer and the electronic ink screen.

9. When the device is operating as a notebook computer, a large-size virtual keyboard is implemented on the electronic ink screen, with or without a finger or pen-controllable virtual mouse pad.

Detailed Description

When the double-screen equipment is turned on, if the switch (4) is in the left position, the equipment works in a notebook computer mode; if the switch (4) is in the second left position, the device operates in the electronic reader mode; if the switch (4) is in the right position, the device operates in the tablet computer mode; if the switch (4) is in the second right position, the device operates in the dual screen mode. The device uses a common storage space in both notebook or e-reader or tablet or dual screen modes.

In the electronic reader working mode, no content is output to the screen of the tablet computer. All the output is displayed on the electronic ink screen (1), thus saving much battery power and providing the best reading experience like a paper book. The touchable screen (1) has a virtual keyboard at the bottom of the screen for input, and the touchable screen (1) supports various gestures such as left-sliding, right-sliding, zooming-in, zooming-out, and the like. For a black and white screen, the image or text displayed on the electronic ink screen (1) is converted to black and white color. The tablet computer (2) is provided with a plurality of icons (5) allowing a user to use the files, and the content of the files under the icons is displayed by touching the icons (5). The e-reader mode supports word, pdf, text files, png and other types of graphics files, fonts in different languages, and web browsers.

In tablet mode, the user may complete the device setup as a WiFi connection. The tablet computer (2) supports multiple languages and different types of fonts, a user can take a picture with a camera, a web browser can be used, a file can be created or edited, and the like. An icon (6) of the control file is displayed on a screen of the tablet computer, and the file content under the icon or an application under the icon is displayed or operated when the icon (6) is touched. No content is output on the electronic ink screen and all content is displayed in color on the screen of the tablet computer. The screen of the tablet computer is touchable, and can use a virtual keyboard or a pen/electronic pen as the input of the device, and also supports the input by gestures.

In the dual-screen mode, the new device can be used as both an e-reader and a tablet computer, the main functions of which are described in the two sections above. The new device needs to handle multiple displays and inputs simultaneously. The best working state of the double-screen mode is that a user reads books on the electronic ink screen (1) and writes on the tablet personal computer (2) by using a pen. The device will replace paper books and notes in schools and offices.

In the dual-screen mode, the new device can also be used as a notebook computer. The screen of the tablet computer implements a large-sized virtual keyboard, which may or may not have a virtual mouse pad that can be controlled by a finger or pen. The device may also support a physical mouse and may also control the position of a cursor with a finger or pen. A virtual or physical button/switch may be used to switch between laptop and e-reader/tablet modes.

In a notebook computer mode, the large-size virtual keyboard (9) realized on the electronic ink screen (1) provides users with the best user experience like a physical keyboard, and the virtual keyboard (9) can be provided with or without a controllable virtual mouse pad and is useful for users needing to input a large amount of contents from the keyboard. The tablet computer (2) discards the own virtual keyboard and uses a large-size virtual keyboard (9) on the electronic ink screen (1). The user can input contents on the touchable screen of the tablet computer by handwriting with a pen or a stylus pen, and the tablet computer (2) retains other functions. The device may also support a physical mouse and may also control the position of a cursor with a finger or pen.

The switch (4) controls the working mode of the equipment, and after the position of the switch is changed, the notebook computer, the electronic reader, the tablet computer and the double-screen mode can be switched mutually.

Variations of the invention

The invention can be varied in many ways, and the following are a few examples.

With new technologies, smart phone displays also have the advantage of not being -purpose. The new device may use the same type of display screen instead of an electronic ink screen.

The new device may use a foldable display screen instead of two separate screens. The two screens above can be implemented in software as two separate areas.

The device can add an iPhone type screen to the e-reader instead of adding an electronic ink screen to the tablet computer.

Title:

The technical points are

The invention mainly relates to the combination of the advantages of an electronic ink display screen, an IPS LCD display screen and an OLED display screen, and the advantages of an electronic reader, a tablet computer and a notebook computer. The electronic ink type display technology is more power-saving, and does not have light under the irradiation of sunlight, so that eyes can read more comfortably. IPS LCD or OLED type displays have a wider viewing angle, better color update, etc. The e-reader provides the best user experience as reading a paper book or note; the notebook computer provides the best user experience when the user inputs the data through the physical keyboard and the eyes look at the screen at a certain distance and at a certain angle; tablet computers are lighter than notebook computers and facilitate the use of fingers or pens. This device provides all the advantages of e-readers, tablets and laptops.

The novel device has four working modes, wherein one mode is a pure tablet computer mode, and the other mode is a pure electronic reader mode. The third mode is a common working mode of the electronic reader and the tablet computer. The fourth mode is equivalent to a notebook computer without a mouse, and a soft keyboard is realized on the electronic ink screen. The best working state of the double-screen mode is that a user reads a file from an electronic ink screen and inputs contents in a tablet computer. This state corresponds to the user writing a note while reading a book.

Background information

At present, most of tablet personal computers and smart phones use IPS LCD or OLED display technologies, consume electricity quickly and are meshes in the sun. Most electronic readers use electronic ink-based display technology, consume slow power and do not reach mesh in the sun. Although electronic readers provide the same user experience as reading a paper book, most electronic readers are only available for reading, with limited input capabilities. In schools and offices, most people need to read a book while writing notes. Tablet computers are convenient to use with fingers or pens, and inconvenient if there are many keyboard entries. The notebook computer is convenient for a large amount of keyboard input because the physical keyboard is heavier. This device can provide the advantages of different modes of operation and all devices according to the user's needs, but the device is also lighter. New devices will attract people to abandon paper books and notebooks.

Summary of the invention

The invention aims to combine the advantages of an electronic ink display screen and IPS LCD and OLED display screens, so that the device can work as an electronic reader, a tablet computer, a notebook computer or both the electronic reader and the tablet computer, and various device conveniences are provided for users. The electronic ink type display technology is more power-saving, and does not have light under the irradiation of sunlight, so that eyes can read more comfortably, and an IPS LCD or OLED type display screen has a wider visual angle, better color updating and the like.

According to the invention, the new device has four working modes, one mode is a pure tablet computer mode which is easy to use fingers and pens, and the other mode is a pure electronic reader mode which consumes very slow power and provides paper book type user experience. The third mode is a common working mode of the electronic reader and the tablet computer. The best working state of the double-screen mode is that a user reads files from an electronic ink screen and inputs contents on a screen of a tablet computer. This state corresponds to the user writing a note while reading a book. And the user can inquire the information more conveniently than a paper book and a notebook. The fourth mode is equivalent to a notebook computer, and the electronic ink screen realizes a large-size soft keyboard by software, and simultaneously abandons the soft keyboard on a tablet computer.

According to the invention, compared with a tablet computer, the new device does not need much extra hardware, so the weight of the device is changed to be similar to that of the tablet computer, and most of the changes are input/output, display card and operating system parts of the tablet computer, and the device needs to support multiple inputs and multiple screen displays simultaneously.

According to the invention, the new device connects the GPUs with the electronic ink screen via a computer connection line, one end of which is inserted into the interface of the tablet computer and the other end of which is inserted into the interface of the electronic ink screen. A leather or plastic jacket or a rotatable hinge may couple the electronic ink screen and the tablet computer together. The electronic ink screen is detachable, and after the electronic ink screen is detached, the equipment can work like a normal tablet computer.

According to the invention, the new device can be used as both a tablet computer and a smart phone.

Description of the drawings (3 pages of the drawing)

Fig. 3 is a three-dimensional view of the electronic ink screen lying flat on a desk and the tablet pc standing at an obtuse angle on the desk. The device is equivalent to a notebook computer, and a soft keyboard is realized on an electronic ink screen.

The following are details of the main components of the apparatus.

1. A touchable electronic ink screen has an interface for computer connection.

2. The tablet computer is provided with an interface for connecting a computer connecting wire with the electronic ink screen, and the tablet computer is provided with a touchable screen with a soft keyboard and supports the input of a digital pen or a handwriting pen.

7. Control icons indicating device battery level, network connections, and the like.

8. A hinge coupling the tablet computer and the electronic ink screen.

9. When the equipment works as a notebook computer, the large-size soft keyboard is realized on the electronic ink screen.

Detailed Description

In the electronic reader operating mode, no content is output to the screen of the tablet computer. All outputs are displayed on the electronic ink screen (1), thus saving much battery power and providing an optimal reading experience like a paper book. The touchable screen (1) has a soft keyboard at the bottom of the screen for input, and the touchable screen (1) supports various gestures such as left slide, right slide, zoom-in, zoom-out, and the like. For a black and white screen, the image or text displayed on the electronic ink screen (1) is converted to black and white color. The tablet computer (2) is provided with a plurality of icons (5) allowing a user to use the files, and the content of the files under the icons is displayed by touching the icons (5). The e-reader mode supports word, pdf, text files, png and other types of graphics files, fonts in different languages, and web browsers.

In tablet mode, the user may complete the device setup as a WiFi connection. The tablet computer (2) supports multiple languages and different types of fonts, a user can take a picture with a camera, a web browser can be used, a file can be created or edited, and the like. An icon (6) of the control file is displayed on a screen of the tablet computer, and the file content under the icon or an application under the icon is displayed or operated when the icon (6) is touched. No content is output on the electronic ink screen and all content is displayed in color on the screen of the tablet computer. The screen of the tablet computer is touchable, and can use a soft keyboard or a pen/a handwriting pen for inputting, and also supports gesture input.

In the dual-screen mode, the new device can be used as both an e-reader and a tablet computer, with the main functions as described in the two sections above. The new device needs to handle multiple displays and inputs simultaneously. The best working state of the double-screen mode is that a user reads books on the electronic ink screen (1) and writes on the tablet personal computer (2) by using a pen. The new device will replace paper books and notes in schools and offices.

In a notebook computer mode, the large-size soft keyboard (9) realized on the electronic ink screen (1) provides users with the best user experience like a physical keyboard, and is useful for users needing to input a large amount of content from the keyboard. The tablet personal computer (2) abandons the own soft keyboard and uses the large-size soft keyboard (9) on the electronic ink screen (1). The user can input contents on the touchable screen of the tablet computer by handwriting with a pen or a stylus pen, and the tablet computer (2) retains other functions.

Title:

The technical points are

The present invention mainly relates to combining the advantages of electronic ink type displays with IPS LCD and OLED type displays. The electronic ink type display technology is more power-saving, and does not have light under the irradiation of sunlight, so that eyes can read more comfortably. The IPS LCD or OLED display screen has wider viewing angle and better color updating. The novel device has three working modes, wherein one mode is a pure tablet computer mode, and the other mode is a pure electronic reader mode. The third mode is a common working mode of the electronic reader and the tablet computer. The best working state of the double-screen mode is that a user reads a file from an electronic ink screen and inputs contents in a tablet computer. This state corresponds to the user writing a note while reading a book.

The new device can utilize most hardware of the tablet computer with little additional cost. Most of the modifications are part of the operating system of the tablet computer, and need to support multiple inputs and multiple screen displays simultaneously.

Background information

At present, most of tablet personal computers and smart phones use IPS LCD or OLED display technologies, consume electricity quickly and are meshes in the sun. Most electronic readers use electronic ink-based display technology, consume electricity slowly and are out of mesh in the sun, but electronic readers are only available for reading. In schools and offices, most people need to read books or documents while writing notes. This is why electronic reader-like devices do not completely replace paper books and notebooks. This device will attract people to give up paper books and notebooks.

Summary of the invention

The invention aims to combine the advantages of an electronic ink display screen and IPS LCD and OLED display screens, the electronic ink display technology is more power-saving, light is not generated under the irradiation of sunlight, so that eyes can read more comfortably, and the IPS LCD or OLED display screen has wider visual angle, better color updating and the like.

According to the invention, the new device has three working modes, one mode is a pure tablet computer mode, and the other mode is a pure electronic reader mode with low power consumption. The third mode is a common working mode of the electronic reader and the tablet computer. The best working state of the double-screen mode is that a user reads files from an electronic ink screen and inputs contents on a screen of a tablet computer. This state corresponds to the user writing a note while reading a book. The new devices will attract people to give up paper books and paper notebooks, thus saving a lot of paper to the world.

According to the invention, the new device requires few additional hardware components compared to a tablet computer. Most of the modifications are part of the operating system of the tablet computer, and need to support multiple inputs and multiple screen displays simultaneously.

According to the invention, the new device connects the GPUs with the electronic ink screen via a computer connection line, one end of which is inserted into the interface of the tablet computer and the other end of which is inserted into the interface of the electronic ink screen. A leather or plastic jacket or a rotatable hinge may couple the electronic ink screens together. The electronic ink screen is detachable, and after the electronic ink screen is detached, the equipment can work like a normal tablet computer.

Description of the drawings (3 pages of the drawing)

The following are details of the main components of the apparatus.

1. A touchable electronic ink screen has an interface for computer connection.

2. The tablet personal computer is provided with an interface for connecting a computer connecting wire with the electronic ink screen.

4. And the switch is used for controlling the working mode of the equipment and has three positions, wherein the left position is an electronic reader mode, the middle position is a double-screen mode, and the right position is a tablet computer mode.

8. And a hinge for connecting the tablet computer and the electronic ink screen.

Detailed Description

When the double-screen device is turned on, if the switch (4) is in the left position, the device works in an electronic reader mode; if the switch (4) is in the right position, the device operates in the tablet computer mode; if the switch (4) is in the neutral position, the device operates in the dual screen mode. The device uses a common storage space in both the e-reader or tablet or dual screen modes.

In the electronic reader operating mode, no content is output to the screen of the tablet computer. All outputs are displayed on the electronic ink screen (1), thus saving a lot of battery power. The touchable screen (1) has a soft keyboard at the bottom of the screen for input, and the touchable screen (1) supports various gestures such as left slide, right slide, zoom-in, zoom-out, and the like. For a black and white screen, the image or text displayed on the electronic ink screen (1) is converted to black and white color. The tablet computer (2) is provided with a plurality of icons (5) allowing a user to use the files, and the content of the files under the icons is displayed by touching the icons (5). The e-reader mode supports word, pdf, text files, png and other types of graphics files, fonts in different languages, and web browsers.

In tablet mode, the user can complete the device setup as a WiFi connection. The tablet computer (2) supports multiple languages and different types of fonts, a user can take a picture with a camera, a web browser can be used, a file can be created or edited, and the like. An icon (6) of the control file is displayed on a screen of the tablet computer, and the file content under the icon or an application under the icon is displayed or operated when the icon (6) is touched. No content is output on the electronic ink screen and all content is displayed in color on the screen of the tablet computer. The screen of the tablet computer is touchable, a soft keyboard can be used as equipment for inputting, and gesture input is also supported.

In the dual-screen mode, the new device can be used as an e-reader and a tablet computer at the same time, and the functions of the new device are mainly as described in the two sections. The new device needs to handle multiple displays and inputs simultaneously. The best working state of the double-screen mode is that a user reads books on the electronic ink screen (1) and writes on the tablet personal computer (2) by using a pen. The new device will replace paper books and notes in schools and offices.

The switch (4) controls the working mode of the equipment, and after the position of the switch is changed, the electronic reader, the tablet computer and the double-screen mode can be switched mutually.

Title:

electronic equipment with double display screens

Cross reference to related applications

I hereby claim the benefit of the following provisional patent applications filed at the U.S. patent and trademark office: application No. 62/888,553, application date 2019, 8 month 19; application No. 62/889,575, application date 2019, 8 month 20; application No. 62/912,978, application date 2019, 10 month 9.

The technical points are

The invention mainly relates to creative double display screens and various input technologies, and provides a more convenient method for simultaneously reading and writing for users compared with the existing tablet personal computer, electronic reader, smart phone, notebook computer and desktop computer which only have one display screen. Especially, the handwriting technology of an electronic pen or a digital pen, the new equipment provides better experience for a user to write electronic notes instead of notes on paper, and provides a plurality of convenient input modes from formal character input to handwriting, drawing, signature and the like. The new display technology of electronic ink is more power-saving, and does not have light under the irradiation of sunlight so as to protect eyes. Other non-electronic ink based display technologies, such as LEDs or OLEDs, provide higher quality graphics, a wider range of colors, and faster screen refresh rates. The multi-core CPU or GPU technology further improves the performance of the device under multitasking. The new device integrates the above technologies to form a perfect device for reading and writing alternately at the same time.

Background information

In schools and offices, most people need to read books or documents while writing notes. However, the existing electronic devices do not provide a good experience for users to read and write simultaneously. This is why we can conveniently digitize any document, but still use a great deal of paper books and notebooks of paper.

Currently, most tablet computers or e-readers or smart phones use a touch screen as display and a virtual keyboard or electronic pen as input. Tablet computers are easy to use fingers or electronic or digital pens for input, but do not facilitate large amounts of input with a small-sized single-handed virtual keyboard. Some tablet computers have portable physical keyboards, and when a user uses the keyboard, the user cannot conveniently use an electronic pen or a digital pen for handwriting input at the same time. Most notebook computers or desktop computers use a physical keyboard, a mouse as input and a screen as display, and when a user uses the physical keyboard for convenient input, the user cannot use an electronic or digital pen for handwriting input.

Most tablet computers and smart phones use IPS LCD or OLED type display technology, consume power quickly and are mesh in the sun. Most e-readers use e-ink type display technology, save power and are out of mesh in sunlight, but the screen refresh rate is low. Although electronic readers provide users with a reading experience similar to that of paper books in the sun, most electronic readers have limited input capabilities, and most electronic readers and smart phones have small screens and can only display one application.

Because of the problems with existing electronic devices, we have digitized most documents while still writing a large number of notes on paper. The notes on the paper not only waste a large amount of paper and storage space, but also are difficult to query for existing information.

Summary of the invention

The invention aims to combine the advantages of the existing electronic equipment with a new display technology and a new handwriting technology, wherein the new display technology and the new handwriting technology comprise a tablet personal computer, an electronic reader, a smart phone, a notebook computer and a desktop computer, and provide better user experience for simultaneous reading and writing. In particular, the handwriting techniques provided by electronic or digital pens, the new device will help users write electronic notes instead of writing notes on paper. The new device will take advantage of the electronic ink type screen to save power and provide a better reading experience in the sun. The new devices will attract people to give up paper books and paper notebooks, thus saving a lot of paper to the world.

According to the invention, the new device has four modes of operation for tablet computers, e-readers/e-notepads and smart phones. The first mode is the book and notebook touch mode, two screens, one for reading and the other readable and writable as tablet, e-reader/e-notepad and smartphone screens. The second mode is a touch screen mode, one screen working like existing tablet computers, e-readers/e-notepads and smart phones. The third mode is a reading mode, one screen is active for reading only. The reading mode can save power, especially using electronic ink type screens. The fourth mode is a notebook mode, two screens, one displaying an application, the other displaying a virtual keyboard with a tablet with an available electronic or digital pen. This model is equivalent to a traditional pen-based computer, where the physical keyboard is replaced by a virtual keyboard, plus handwriting input from the screen. The best working condition of the dual-screen device is that the user reads the document from one screen and inputs the content on the other screen by an electronic or digital pen. This state corresponds to a state in which the user writes a note while reading a book, and can help the user to write a book or note without using paper.

According to the invention, the new device has two modes of operation for a notebook and a desktop computer. In the first mode, the touch screen has a virtual keyboard with similar dimensions to a traditional physical keyboard, and the virtual keyboard also has a virtual mouse touch pad and a handwriting pad. The user may alternatively use the virtual keys and the electronic or digital pen to input content. Compared with the traditional physical key, the virtual key needs smaller touch pressure. In the second mode, the touch screen is used as a tablet computer. The user can read/write on a touch screen or read a document on a conventional screen. The tablet computer and the notebook/desktop computer can be alternately used by switching on and off the virtual keyboard.

According to the present invention, compared to a common tablet computer or notebook computer, the new device does not need an additional hardware device except for one screen, and thus the new device and the tablet computer have similar weights and require different input/output ports and systems to be modified to support input and display of two screens.

According to the invention, the second screen can be connected to a certain interface of equipment such as a tablet computer, an electronic reader/electronic notebook and a smart phone through a computer connecting wire or wirelessly, and manufacturers can select different types of interfaces and computer connecting wires. The second screen may be designed to be detachable or detachable and may be attached to the device by a hinge.

According to the invention, in the notebook computer operating mode, a virtual keyboard is implemented on the touch screens of the tablet computer, the e-reader/e-notepad and the smartphone. To avoid using the shift keys to enter a second letter on some keys, the keys on the virtual keyboard are rearranged, and the repeated number keys are removed and replaced with special symbols such as $ #. The rearranged keys will be easier for the user to use, as it is easier for the user to find special symbols in concentrated rather than scattered areas. Compared with a physical keyboard, the virtual keyboard only needs less touch pressure, so that fewer health problems are brought about. The virtual keyboard is provided with a virtual mouse touch pad and a handwriting touch pad which can be used by an electronic pen or a digital pen. The handwriting touch pad has two working modes, and records the content written on the pad or converts the handwriting into formal characters. The two modes can be switched by a virtual key control. Touching another virtual key may select the language. The large-sized handwriting board can input a plurality of contents at the same time. The virtual handwriting board can improve the traditional input method of the physical keyboard.

According to the present invention, new devices such as tablet computers, e-readers/e-notepads and smartphones may be used with a pair of hinges that may be rotated 360 degrees, and the new devices may be brought together in two ways, with the two screens facing each other when the user is not using the device. When the user only needs to use one screen, the second screen or the tablet computer, the electronic reader/electronic notebook and the screen of the smart phone are turned to the outside, and the user can conveniently hold the device with one hand.

The new device with smaller screen, according to the present invention, transforms the physical keyboard into three interfaces. Compared with the existing standard small-sized virtual keyboard, the new device places numbers and arithmetic operation related operation symbols on a virtual keyboard to improve arithmetic related work. And touching one virtual key, and switching the virtual keyboard to English letters. Touching another virtual key, the virtual keyboard switches to a special symbol. Two arrow keys are arranged on the virtual keyboard, and a user can conveniently move a cursor in a character column with more characters.

According to the invention, the display on two screens can be processed by a multi-core CPU or a single core in a GPU. The new device does not burden a multi-core CPU or GPU system as compared to a single screen device, because the input-output system is relatively slow. For an electronic reader and a smart phone with smaller screen sizes, two screens can display two tasks at a time, and one screen can only display one task at a time.

According to the invention, the new device can store or query all electronic files, such as e-books, digital notebooks and paintings, on the device or in the cloud.

Description of the drawings (7 pages of the drawing)

Fig. 1 is a top view of a double screen device laid flat on a table from top to bottom. The second screen is connected to the tablet computer, e-reader/e-notebook, via a computer connection wire or wirelessly, but the second screen is designed as a separate component.

Fig. 2 is a top view of the dual screen device from top to bottom when laid flat on a table. The second screen is connected with the tablet computer, the electronic reader/the electronic notebook through a hinge.

FIG. 3 is a three-dimensional view of a second screen laid flat on a desktop and a tablet PC with an e-reader/e-notepad standing at an obtuse angle on the desktop. The new device is used as a notebook computer, and the second screen displays a virtual keyboard with a size similar to the physical keyboard.

Fig. 4 is a top view of the virtual mouse touchpad laid flat on a table from top to bottom.

FIG. 5 provides a first user interface for a virtual keyboard that is similar in size to a physical keyboard. To avoid using the shift keys to enter a second letter on some keys, the virtual keyboard removes the duplicate numeric keys and replaces them with these special symbol keys. The virtual keyboard is provided with a virtual mouse touchpad.

FIG. 6 provides a second user interface for a virtual keyboard that is similar in size to a physical keyboard. To avoid using the shift keys to enter a second letter on some keys, the virtual keyboard removes the duplicate number keys and replaces them with special symbol keys. The virtual keyboard is provided with a virtual mouse touch pad and a small-sized handwriting touch pad that can be used with an electronic pen or a digital pen. The handwriting touch pad has two working modes, and records the content written on the pad or converts the handwritten content into formal characters. The two modes can be switched by a virtual key to control 'mod'. Touching another virtual key "lang" may select a language.

FIG. 7 provides a third user interface for a virtual keyboard that is similar in size to the physical keyboard. To avoid using the shift keys to enter a second letter on some keys, the virtual keyboard removes the duplicate number keys and replaces them with special symbol keys. The virtual keyboard is provided with a virtual mouse touch pad and a large-sized handwriting touch pad which can be used by an electronic pen or a digital pen. The handwriting touch pad has two working modes, and records the content written on the pad or converts the handwritten content into formal characters. The two modes can be switched by controlling "mod" through a virtual key. Touching another virtual key "lang" may select a language.

Fig. 8 is a top view of the new device laid flat on a table from top to bottom. The new device has a smart phone connected to a second screen via a hinge.

Fig. 9 is a three-dimensional view of the new device when laid flat on a table. The new device has a smart phone connected to a second screen via a hinge. The second screen is tilted at an obtuse angle to the smartphone.

Fig. 10 provides a second user interface of a small-sized virtual keyboard, displayed on the full screen of a smartphone or on a portion of the screen of a tablet or e-reader/e-notepad. Virtual keyboard there are three virtual keyboards, and the second user interface puts numeric keys and arithmetic keys together to improve the user experience compared to the virtual keyboards on existing popular smart phones. Touching the "ABC" key would turn to the first user interface for english letters and touching the "$ # &" key would turn to the third user interface for special characters. The virtual keyboard adds two arrow keys to facilitate the user moving the cursor.

Fig. 11 provides a side view from below up with the second screen of the device and the smartphone screen brought together in opposition.

Fig. 12 provides a side view from below up with the second screen of the device and the smartphone screen both brought together outwards. The device requires a pair of hinges or a flexible outer sleeve connection that can rotate 360 degrees. The hinge is of a type determined by the manufacturer.

Fig. 13 provides a top view of the electronic or digital pen when laid flat on a table.

FIG. 14 provides a three-dimensional view of a notebook computer with the physical keyboard replaced by a touch screen.

FIG. 15 provides a three-dimensional view of a desktop computer, display screen and touch screen.

The following are details of the main components of the apparatus.

1. A tablet computer or e-reader/e-notepad having an interface for connecting to the computer connection of the second screen.

2. The touch screen on the tablet computer or the electronic reader/electronic notebook can be input by fingers or an electronic pen/digital pen, and the screen can display a virtual keyboard in a full screen or a part.

3. A second screen supporting finger touch, the second screen is connected with a tablet computer or an electronic reader/electronic notebook through a computer connecting wire or wirelessly, and the second screen can support or not support an electronic pen or a digital pen. This screen may display a virtual keyboard in part or in whole.

4. A touch-press type switch which can switch on and off the screen of the tablet computer or the electronic reader/electronic notebook.

5. A touch switch for switching the second screen.

6. Icons of control files displayed on a screen of a tablet computer or e-reader/e-notepad. Touching an icon may display a file or run an application under the icon.

7. Icons of the control files displayed on the second screen. Touching an icon may display a file or run an application under the icon.

8. And controlling an icon of the full-screen virtual keyboard, wherein touching the icon can display the full-screen virtual keyboard.

9. A small-sized virtual keyboard displayed on the screen of a tablet computer or e-reader/e-notepad. The illustration does not show all the virtual keys on the virtual keyboard.

10. And a virtual key on the virtual keyboard is displayed on the screen of the tablet computer or the electronic reader/electronic notebook.

11. A small-sized virtual keyboard displayed on said second screen. The illustration does not show all the virtual keys on the virtual keyboard.

12. A virtual key on a virtual keyboard displayed on said second screen.

13. A computer connecting wire for connecting the tablet computer or the electronic reader/electronic notebook and the second screen. At present, there are many different computer connecting wires, and the invention has no specific requirement for the computer connecting wires and is selected by the manufacturer.

14. A touch-press type switch which can switch the equipment between a touch screen mode and a notebook computer mode. Pressing this switch may display/turn off the full screen virtual keyboard on the second screen of the device.

15. A pair of hinges connecting the tablet or e-reader/e-notepad and the second screen.

16. And a virtual keyboard with the same size as the physical keyboard is displayed on the screen of the tablet computer or the electronic reader/electronic notebook. The figures do not show all of the keys on the virtual keyboard, but rather "keys" are used to represent keys that are not shown.

17. A virtual key on the virtual keyboard.

18. A special key that can switch the user interface of the virtual keyboard. By pressing this key, the virtual keyboard translates into another user interface with a writing pad.

19. And a virtual mouse touch pad on the virtual keyboard can control a cursor on an original screen of a tablet computer or an electronic reader/electronic notebook.

20. A left keystroke on the virtual mouse touchpad.

21. A right keystroke on the virtual mouse touchpad.

22. Direction of finger movement/sliding on the virtual mouse touchpad.

23. A user interface for a virtual keyboard having a virtual mouse touchpad and a small-sized virtual tablet usable with an electronic pen or a digital pen. To avoid using the shift keys to enter a second letter on some keys, the virtual keyboard removes the duplicate number keys and replaces them with special symbol keys. The virtual keyboard may use a conventional user interface with shift keys if the screen size is small.

24. A small-sized virtual writing pad supports an electronic pen or a digital pen. It has two working modes, the hand writing mode records the content written on the board, and the conversion mode converts the hand written content into formal characters. The small-sized virtual handwriting pad supports only a single line of input.

25. And a virtual key 'mod' for controlling the working mode of the virtual writing pad, wherein the working mode of the writing pad is switched back and forth between handwriting and conversion by touching the virtual key.

26. A virtual key "lang" controlling said virtual writing pad language.

27. The area where the special characters are grouped together helps the user to find the special characters.

28. A user interface for a virtual keyboard having a virtual mouse touchpad. To avoid using the shift keys to enter the second letter on certain keys, the virtual keyboard rearranges the keys, removing the duplicate number keys and replacing them with some special symbol keys. The virtual keyboard may use a conventional user interface with shift keys if the screen size is small.

29. A user interface for a virtual keyboard having a virtual mouse touchpad and a large-sized virtual tablet that can be used with an electronic pen or a digital pen. To avoid using the shift keys to enter the second letter on certain keys, the virtual keyboard rearranges the keys, removing the duplicate number keys and replacing them with some special symbol keys. The virtual keyboard may use a conventional user interface with shift keys if the screen size is small.

30. A large-sized virtual writing pad supports an electronic pen or a digital pen. It has two working modes, the hand writing mode records the content written on the board, and the conversion mode converts the hand written content into formal characters. The large size virtual handwriting pad supports multiple line input.

31. A smart phone.

32. A touch screen on the above-mentioned smart mobile phone.

33. A second screen of the smart phone.

34. And the application icons on the screen of the smart phone.

35. An application icon on a second screen of the smartphone.

36. And the touch-press type switch can switch on/off the full-screen virtual keyboard on the second screen of the smart phone.

37. A small size virtual keyboard on the smart phone screen. This keyboard has three user interfaces, the second one places numerical and arithmetic related operator symbols on one user interface, see fig. 10, compared to the popular virtual keyboard of existing smart phones.

38. A small size virtual keyboard on the smart phone screen. This keyboard has three user interfaces, the second one places numerical and arithmetic related operator symbols on one user interface, see fig. 10, compared to the popular virtual keyboard of existing smart phones.

39. And keys on the small-size virtual keyboard on the screen of the smart phone. Not all of the keys of the virtual keyboard are shown.

40. And keys on a small-size virtual keyboard on the second screen of the smart phone. Not all of the keys of the virtual keyboard are shown.

41. A small size virtual keyboard displayed full screen on the smartphone screen. This keyboard has three user interfaces, the second one places numerical and arithmetic related operator symbols on one user interface, see fig. 10, compared to the popular virtual keyboard of existing smart phones.

42. A key on the small-sized virtual keyboard.

43. A virtual key with the "$ # &" character, and touching this key, the virtual keyboard will switch to a special character user interface.

44. And a virtual key with the characters of ABC is touched, and the virtual keyboard can be converted into a user interface with English letters.

45. A virtual key with "lang" characters, touching this key, a language can be selected.

46. An executed virtual key.

47. An arrow key that moves a cursor.

48. A hinge capable of rotating 360 degrees.

49. An electronic or digital pen.

50. A tip of the electronic or digital pen.

51. A notebook computer with a physical keyboard replaced by a touch screen.

52. The conventional display screen of the notebook computer.

53. And the touch screen replaces the physical keyboard of the notebook computer. This screen may display a virtual keyboard with different user interfaces.

54. And a pair of hinges for connecting the notebook computer and the conventional display screen.

55. A touch screen connected to the desktop computer through a computer connecting wire.

56. A PC, i.e. a personal computer.

57. And a computer connecting wire for connecting the touch screen and the personal computer.

58. A display connected to said personal computer.

59. And a computer connecting wire for connecting the display screen and the personal computer.

60. A virtual key that controls the virtual keyboard, touching the key will close the virtual keyboard.

61. And a touch-press type switch for turning on/off the screen of the smart phone.

62. And a touch-press type switch for turning on/off the second screen of the smart phone.

63. And a virtual key 'ent' on the virtual handwriting touch pad is touched to finish the input on the virtual handwriting pad, and the input content is displayed on the opened file.

64. The virtual key "del" on the virtual handwriting touchpad is regardless of touchpad size, and touching the key will clear what the user has entered.

Detailed Description

When the new device consisting of the tablet computer or the electronic reader/electronic notebook (1) and the second screen (3) is opened, the device works in a reading and note mode, and the original screen and the second screen (3) of the tablet computer or the electronic reader/electronic notebook are opened. In this mode of operation, the user can read the document on the second screen (3) while reading on the original screen (2) or writing with an electronic or digital pen (49) or entering through the keys (10) on the virtual keyboard (9). The file or application is opened by touching the file icon (6) (7) on the original screen (2) or the second screen (3). The application opened on the second screen (3) has read-only rights and does not allow the content of the file to be changed. The read-only permission simplifies the file management system and avoids the consistency problem of the temporary memory. The new device allows to copy the content displayed on the second screen (3) into the file displayed on the original screen (2). The following is an example of the use of a new device by students in a classroom.

When a student touches a file icon (7) on the second screen (3) to open an electronic book, he touches another file icon (6) on the original screen (2) to open an electronic note. When he reads the electronic book displayed on the second screen (7), he can turn the pages by sliding his fingers; while he can write notes with an electronic or digital pen (49) or keys (10) on a virtual keyboard (9). If the student wants to query the material via the network he can close the e-book and touch another file icon (7) to open the web browser. When the student finds the content needed by the student, the student touches the finger to select the content needed by the student, and when one taskbar pops up, the student touches the copy item; then, the user moves the cursor to the position of the original screen (2) where the note needs to be written, and after touching the position and popping up another task bar, the user selects a paste item, and the needed content is copied into the electronic note. If the student needs the content stored in the cloud electronic notebook, the student can download the note through wireless connection or read on the internet, and the student can quickly find the needed content through key word searching. After the course is finished, the student can store the electronic notes in the device or the cloud. Reviewing the course of the entire curriculum, the new device provides students with a more convenient way to read, write and query than traditional heavy books and notes on paper.

After completing the lesson, the student wants to read a novel on the train coming home. To save battery he switches off the original screen (2) on the device and reads the novel on the second screen (3). The device operates in a reading mode. If the second screen (3) is an electronic ink screen, it can save power and provide a good reading experience in the sun. There is no desk on the train, the student must hold the device with his hand to read, and he turns the second screen of the device with a hinge (15) that can rotate 360 degrees to the outside. If the second screen (3) is designed to be separate, a 360-degree leather or plastic cover can connect the tablet computer or electronic reader/electronic notebook with the second screen (3).

After the student returns home, he wants to draw. He does not need the second screen (3) and therefore turns off the second screen (3) with the touch switch (5). The new device becomes a pure tablet or e-reader/e-notepad (1) in the touch screen state. The student uses an electronic pen (49) to draw a picture on the original screen (2) of the tablet personal computer (1).

After the student finishes drawing, he needs to write a file in a formal text format. He turns on the original screen (2) and the second screen (3) simultaneously, and then he touches the switch (14), and a full-screen virtual keyboard (16) is displayed on the second screen (3). The touch switch (14) can also be replaced by a virtual icon (8) on the second screen (3). The new device works in a notebook computer mode and can be input through a plurality of keys. The student can alternate handwriting using the keys (17) or the virtual handwriting touch pad (24). After the student completes the file, he finally signs his name, and he can store the file on the device or in the cloud.

A normal size virtual keyboard (16) has three user interfaces. The first user interface is the same as a general physical keyboard, and a virtual mouse touchpad (19) replaces the mouse touchpad. The second user interface is similar to a conventional physical keyboard with a virtual mouse touchpad (19) plus a small-sized handwriting touchpad (24) that can be used with an electronic or digital pen (49). The small size of the virtual handwriting touchpad (24) supports only a single line of input. The method has two working modes, wherein in the first working mode, a handwriting board (24) records contents written or drawn on the board, and after a virtual key 'ent' (63) is touched, the input contents are displayed in a file of an original screen. In a second mode of operation, the writing tablet (24) converts handwritten content to official text, which is particularly useful for non-English text. The third user interface is similar to a common physical keyboard, and is provided with a virtual mouse touch pad (19) and a large-size handwriting touch pad (30) which can use an electronic pen or a digital pen (49), wherein the large-size virtual handwriting pad (30) supports multi-line input at a time. The keys of the virtual keyboard are rearranged and the repeated number keys are cancelled, and if the size of the second screen (3) is large enough, the shift key is cancelled and the special character set is placed in the area (27) of the original repeated number keys.

If the device is a smartphone (31) plus a second screen (33), it also has the four operating modes described above. The difference is that the full screen virtual keyboard (41) on the second screen (33) has three user interfaces due to the screen size being too small. On this device, the second user interface shown in fig. 10 places numeric keys and arithmetic keys together to facilitate the work of arithmetic keys. A pair of arrow keys is added to each user interface to facilitate moving the cursor when the text is longer in the short text field. Another difference is that the battery life of the smartphone is important, so the second screen, if it is an electronic ink screen, will help the smartphone battery last longer.

If the device is a laptop computer (51) whose physical keyboard is replaced by a touch screen (53), it has two modes of operation, tablet and laptop. In the tablet computer mode, after a user touches a file icon on the touch screen (53) to open a file, the file can be read, or written or drawn by finger touch through an electronic pen or a data pen. In the notebook mode, the touch screen (53) displays a normal size virtual keyboard (16) with the three user interfaces described above, and the user can use the virtual mouse touchpad (19) or a conventional physical mouse pad to open an application on the original screen (52) of the notebook, or can use the virtual keys (17) or an electronic pen or a digital pen for input.

If the device is a desktop computer (56), the physical keyboard is replaced by a touch screen (55), and the touch screen (55) and the desktop computer (56) are connected through a computer connecting wire (57) or wirelessly. The new device has two modes of operation, tablet and desktop. In the tablet computer mode, after a user touches a file icon on the touch screen (55) to open a file, the file can be read, or written or drawn by touching with a finger, an electronic pen or a data pen. In desktop mode, the touch screen (55) displays a normal size virtual keyboard (16) with the three user interfaces described above, and the user can use the virtual mouse touchpad (19) or a conventional physical mouse pad to open an application on the desktop computer's original screen (58) and can also use the virtual keys (17) or an electronic pen or a digital pen for input.

For devices with a laptop/desktop, the tablet and laptop/desktop modes may be used interchangeably, and multiple applications may run in both tablet and laptop/desktop modes simultaneously. The on/off virtual keyboard (16) may switch between tablet and notebook/desktop modes. A user can more conveniently read a plurality of documents on the screen of the notebook/desktop computer, simultaneously write notes conveniently on the touch screen, conveniently use a mixture of key inputs, or write with an electronic pen or a digital pen.

This dual screen device requires modification of the operating system, input/output system, and associated software and hardware. In addition to the touch screen, the new device does not require excessive additional hardware costs. Because input/output is relatively slow, the additional touch screen does not overburden the system with a multi-core CPU/GPU. The dual screen device and the single screen device do not differ in terms of the set up of WiFi, camera and other hardware/software.

The touch screen (1) (3) or (31) (33) supports gestures such as left slide, right slide, zoom in, zoom out, etc. If the second screen (2) or (32) is a black and white screen, the image or text displayed on the electronic ink screen (2) or (32) is converted into black and white. This device should support word, pdf, text files, jpg, png and other types of graphics files, and support multiple fonts and languages.

Variations of the invention

There are many variations of the invention, and the following are examples.

With the development of new technologies, screens of the non-electronic ink type also have the advantage of not being proof, and the new device can also use such new display technologies.

The new device may also replace two separate screens with a foldable display screen. The two screens described above can be designed in software as two areas on one screen.

Claims

1. An electronic device having two screens (2) (3) or (32) (33) comprising:

a tablet computer or e-reader or e-notepad (1) with a touch screen (2) or a smart phone (31) with a touch screen (32), both screens (2) or (32) supporting finger touch and an electronic pen or digital pen;

a second screen (3) or (33) of the tablet computer or the electronic reader or the electronic notepad (1) or the smart phone (31);

a computer connecting wire (13) or wireless connection for connecting the tablet personal computer or the electronic reader or the electronic notebook (1) and the second screen (3), or another computer connecting wire or wireless connection for connecting the smart phone (31) and the second screen (33);

a touch switch (4) capable of opening/closing the screen (2) of the tablet computer or the electronic reader or the electronic notebook (1), or a touch switch (61) capable of opening/closing the screen (32) of the smart phone (31);

a touch switch (5) for opening/closing said second screen (3), or a touch switch (62) for opening/closing said second screen (33).

2. The dual-screen electronic device as claimed in claim 1, wherein when the two screens are opened, the second screen (3) or (33) displays a read-only file, and the original screen (2) or (32) displays a file which is readable and writable at the same time.

3. A dual-screen electronic device as claimed in claim 2, wherein the second screen (3) or (33) displays read-only files to simplify the file management system of the device without having consistency problems with temporary memory.

4. The dual-screen electronic device of claim 2, wherein the original screen (2) or (32) can be used for inputting content by using virtual keys (10) or (39) on a virtual keyboard (9) or (37), or by handwriting with a stylus or a digital pen (49).

5. A dual-screen electronic device as claimed in claim 2, wherein the content displayed on the second screen (3) or (33) is copied and copied to the file displayed on the original screen (2) or (32).

6. The dual-screen electronic device of claim 2, wherein the touch switch (4), (5) or (61), (62) is capable of turning off one or both of the screens (2), (3) or (32), (33) to save power.

7. The dual-screen electronic device of claim 2, wherein the second screen (3) or (33) is connected to the tablet pc or the e-reader or the e-book (1) or the smart phone (31) via a hinge or a flexible cover capable of rotating 360 degrees, and when the user only needs to use one screen, the second screen (3) or (33) can be turned over to the outside of the device to facilitate the user to hold the device.

8. The dual-screen electronic device of claim 1, wherein the second screen (3) or (33) of the electronic ink type display technology and the original screen (2) or (32) of the tablet computer or the electronic reader or the electronic notebook (1) or the smart phone (31) of the non-electronic ink type display technology can utilize the advantages of the electronic ink type display technology such as power saving and no purpose in sunlight, and can also utilize the advantages of the LEDs or other non-electronic ink type display technology such as bright images/wide range of colors, depending on the specific application.

9. The dual-screen electronic device of claim 8, wherein the battery of the device can last longer after the screen (2) or (32) is turned off using a non-electronic ink-based display technology.

10. A virtual handwriting touchpad comprising:

a rectangular touch area with four virtual keys:

(1) a virtual key with the letter "mod" is used to change the operating mode of the touchpad: the handwriting mode records the content written on the board, and the conversion mode converts the handwritten content into formal characters;

(2) the virtual key with the letter "lang" is used to change the language used;

(3) the virtual key with the letter "del" is used to clear the content entered by the touchpad;

(4) the virtual key with the letter "ent" is used to complete a handwritten input, the content of which is displayed on the opened file.

11. The virtual handwriting touchpad of claim 10 wherein said touchpad is a small sized rectangle (24) that supports single line input; such as a large-sized rectangle (30) that supports multiple rows of inputs.

12. A conventional size virtual keyboard comprising:

keys arranged as a conventional MS or MAC or other standard keyboard;

the rearranged keys remove repeated number keys and concentrate some special symbol keys in the area (27) for searching; if the display size is larger, the conversion key is removed to facilitate the key utilization;

a virtual mouse touchpad (19);

a virtual handwriting touchpad as claimed in claim 11;

a virtual key with the letters "keys" (18) for switching the user interfaces (23), (28) and (29) of said virtual keyboard of conventional size;

-by means of a software scheme, a virtual key with the letter "off" (60) for closing and an icon (8) for opening, said virtual keyboard (16);

or through a hardware scheme, a touch type hardware switch (14) is used for opening/closing the virtual keyboard (16).

13. A small-sized virtual keyboard comprising:

three user interfaces:

(1) an English alphabet interface;

(2) a user interface for bringing together numbers and arithmetic-related operator symbols, which facilitates arithmetic-related tasks in comparison to existing standard smartphone virtual keyboards;

(3) a user interface for one other character;

(4) two arrow keys to facilitate moving the cursor when the text is longer in the short text field.

14. The dual-screen electronic device as claimed in claim 1, wherein the virtual keyboard of the conventional size as described in claim 12 displayed on the second screen (3) of the tablet pc or e-reader or e-notepad (1) can be used to input contents for the application displayed on the original screen (2) through the virtual keys or the electronic pen or the digital pen, and can be used to input regular characters, handwriting, drawing and digital signature conveniently and mixedly.

15. The dual-screen electronic device of claim 1, wherein the small-sized virtual keyboard of claim 13 displayed on the second screen (33) of the smart phone (31) can input contents for the application displayed on the original screen (32) through virtual keys and an electronic pen or a digital pen, and can conveniently blend normal characters, handwriting, drawing and digital signature.

16. A notebook or desktop computer having a dual screen, comprising:

a notebook computer (51) or desktop computer (56);

a conventional screen (52) of a notebook computer (51) or a display (58) of a desktop computer (56);

a touch screen (53) replacing a physical keyboard of the notebook computer;

or a touch screen (55) connected with a desktop computer (56) through a computer connecting wire (57) or wirelessly.

17. The notebook computer or desktop computer as recited in claim 15, wherein the conventional size virtual keyboard as recited in claim 12 is capable of inputting content for an application displayed on a conventional screen (52) of the notebook computer or a display (58) of the desktop computer by handwriting using the virtual keys and the electronic pen or digital pen, and is capable of conveniently mixing input of regular characters, handwriting, drawing and digital signature.

18. The notebook computer or the desktop computer as claimed in claim 16, wherein when the virtual keyboard as claimed in claim 12 is closed, the application opened on the touch screen (53) of the notebook computer or the touch screen (55) of the desktop computer can be run simultaneously with the application opened on the conventional screen (52) or (58), and the user can write handwriting on the touch screen (53) or (55) by an electronic pen or a digital pen, or input by using the keys of the small-sized virtual keyboard as claimed in claim 13, and can conveniently and mixedly input regular characters, handwriting, paintings and digital signatures.

19. The dual-screen electronic device of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, or 18 provides a better user experience for a user alternately reading electronic books and writing electronic notes, and can store and query information at the device end or the cloud end more efficiently and conveniently.

20. The dual-screen electronic device of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, or 18, wherein the multi-core CPU/GPU can improve the operation efficiency of the device by processing tasks displayed on each screen individually by a single core.