KR20010056568A - Portable electronic book and method for driving the electronic book - Google Patents

Abstract

PURPOSE: A portable electronic book and a method for operating the same are provided to facilitate a use of an electronic book and to enhance a rate occupied by a display area out of the electronic book area by reducing the number of switching element being mounted at an electronic book. CONSTITUTION: A memory unit(300) stores information and transmits/receives information to the exterior. It is desirable that the memory unit(300) includes an engaging unit capable of being combined to the exterior and being separated. The engaging unit is corresponded to an interface slot of a computer. A transmitting bus unit(400) is combined to the engaging unit, and transmits/receives information. If a time for switch-on status of the first switch(100) or the second switch(200) is exceeded to a fixed time, a control unit(500) generates a power source control signal. If a time for switch-on status of the first switch(100) or the second switch(200) is not exceeded to a fixed time, the control unit(500) generates a page control signal. If the power source control signal is generated, a power source managing unit(600) controls a power source being supplied to a driving circuit of an electronic book. A display device(700) receives and transmits information stored in a memory in accordance with a page up signal and a page down signal generated in the control unit(500) through the transmitting bus unit(400).

Description

Portable electronic book and method for driving the electronic book}

The present invention relates to a portable e-book, and more particularly, to a switching element of a portable e-book and a method of driving the portable e-book.

A portable e-book is a device that allows a user to read a file that can be used in a computer without printing a printer, and includes a flat panel display device such as a liquid crystal display device and an operation switch. 1 and 2 are perspective views schematically showing a conventional portable e-book.

The portable e-book may be classified into two types, such as a memory built-in type shown in FIG. 1 and a memory replaceable type shown in FIG. 2, according to a structure.

The memory built-in e-book includes a memory device (not shown) for storing an e-book file inside the main body 20, and displays the e-book file stored in the memory device through a separate communication means. Displayed on the device 10 to provide the content of the book to the user. Such a memory built-in e-book preferably includes a transmission means 40 such as a parallel port, a serial port, or the like. This is because the e-book cannot provide various types of documents to the user unless the memory-embedded e-book includes a transmission means for communicating with the outside.

The memory replaceable e-book does not have a built-in memory element in the main body 20, so that a separate memory pack in which the contents of the book are stored can be inserted into the interface device 50 such as a slot. Consists of. Such a memory pack stores one or more computer files and can be easily separated from an e-book. Therefore, the memory replaceable e-book can provide many kinds of documents to the user by swapping the memory pack.

Each e-book is provided with several operation keys 30 including page up / down keys so that the user can easily read the contents of the book. In addition to the page-up key and page down key for displaying the contents of a book one screen on the flat panel display, the operation keys include a font key for adjusting the size of the text, And a power key for controlling the power on / off.

In general, the operation keys 30 of the e-book are located on the front surface where the flat panel display device 10 is formed, as shown in FIGS. 1 and 2. And, most of these operation keys are composed of a TACT switch device.

The tact switch is configured to connect two terminals by a push operation or a corresponding operation, and displays one screen or a predetermined amount of screen content for each push operation. Can be updated.

The portable e-book needs at least three functions for smooth use of the user, and should be configured to include an operation switch for performing such a function.

First, a power switch for performing on / off of the power supply. The portable e-book may be configured to include a separate power adapter (adapter) for receiving an external power supply, but if the user is to carry and use when going out, the battery (battery) must be built in. In addition, a power switch for controlling the supply of power is required in the portable e-book in order to reduce the consumption of the power charged in the battery.

Second is a scroll switch for page up / down. Portable e-books display the contents of a book on a flat panel display, so that if you want to provide content to users one screen at a time, a page-up switch is provided to allow the user to read the contents of the book back and forth one screen. It must be configured with a page-down switch. The page up / down scroll switch may be composed of two types, a page up switch and a page down switch, or a single three terminal switch.

Third is a bookmark switch that marks the location of the book the user is currently reading. Conventional books use clips such as clips in the pages of the current book to make them easier to read. However, e-books can be conveniently marked by the user by software to mark the position of the book they are currently reading. Provide. In order for an e-book to provide the user with the above convenience without having such a bookmark switch, the user must continuously mark the position of the book currently displayed on the flat panel display whenever the user presses the page up / down switch. Must have

However, the conventional e-book is provided with a power switch, a page up switch, a page down switch, and a bookmark switch, respectively, and are configured to include at least four or more switches. Therefore, as the function of the e-book increases, the number of switches increases, thereby increasing the area occupied by the switches. As a result, the ratio of the area occupied by the flat panel display device in the e-book becomes low, so that the display area for the user to view the contents of the book is reduced, or the size of the e-book itself increases in order to sufficiently secure the display area.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the purpose of the present invention is to reduce the number of switch elements installed in an e-book, to facilitate the use of the e-book, and to increase the ratio of the area occupied by the display area in the e-book.

1 is a schematic diagram showing a conventional memory-embedded portable e-book

Figure 2 is a schematic diagram showing a conventional memory replaceable portable e-book

Figure 3 is a block diagram schematically showing a portable e-book of the present invention

Figure 4 is a block diagram showing a modified example of the portable e-book of the present invention

5 is a block diagram showing another modified example of the portable e-book of the present invention.

6 is a flowchart showing a driving method according to the first embodiment of the present invention.

7 is a flowchart showing a driving method according to a second embodiment of the present invention.

Symbol description for main parts of drawing

100: first switch 200: second switch

300: memory section 400: transmission bus section

500 control unit 600 power management unit

700: display device 800: signal generator

810: first signal generator 820: second signal generator

The e-book according to the present invention is characterized in that the power switch and the bookmark switch are not separately configured, and the page up switch and the page down switch serve as a power switch or a bookmark switch.

The electronic book of the present invention includes a first switch and a second switch that are turned on by a user's operation, a memory unit coupled to the outside to transmit and receive information, a transmission bus unit coupled to the memory unit to transmit and receive information, and The control unit generates a power supply control signal or a page up / down signal according to the length of the on period of the first switch or the second switch, and supply of power by the power control signal of the controller. And a display device unit for receiving and displaying information stored in the memory unit according to a page up / down signal. Figure 3 is a block diagram schematically showing a portable e-book of the present invention.

The first switch 100 and the second switch 200 have the same configuration as that of the conventional page up switch and page down switch. However, the e-book of the present invention is remarkably different from the conventional e-books in that the page up switch may also function as a power switch, and the page down switch may also function as a power switch.

The memory unit 300 stores predetermined information and is configured to transmit and receive information with the outside. At this time, the memory unit 300 may be provided with a fastening means that may be coupled to the outside or may be separated. The fastening means corresponds to an interface slot used in a computer, and may be configured as a PCMCIA bus of a modem connected to a notebook computer.

The transmission bus unit 400 is coupled to the fastening means of the memory unit 300 to transmit and receive information. The transmission bus unit 400 should be configured to be suitable for the fastening means of the memory unit 300 and may be configured as a slot of a PCMCIA method.

The controller 500 compares the period in which the first switch 100 or the second switch 200 is turned on with a preset set time to turn on the first switch 100 or the second switch 200. The power control signal is generated when the on time exceeds the set time, and the page control signal is generated when the on time of the first switch 100 or the second switch 200 is less than the set time. It is composed. That is, the controller 500 generates a power control signal when the on period of the first switch 100 exceeds the set time, and the page when the on period of the first switch 100 is less than the set time. The apparatus generates the up signal and generates a page down signal when the on period of the second switch 200 is less than the set time. In this case, the controller 500 may be configured to generate a bookmark signal when the on period of the second switch 200 is equal to or longer than a predetermined time so that the e-book stores the location of the information displayed on the current display device.

(Control unit of e-book with separate first and second signal generators)

As shown in FIG. 4, the portable e-book according to the present invention includes a first signal generator 810 for applying a first signal to the controller 500 when the first switch 100 is turned on. When the second switch 200 is turned on, the second switch 200 may further include a second signal generator 820 for applying a second signal to the controller 500.

The control unit 500 of the portable e-book configured to further include a separate signal generator as described above generates a power control signal when the generation period of the first signal exceeds the set time, and the generation period of the first signal is increased. The page up signal is generated when the set time is less than the set time, and the page down signal is generated when the generation period of the second signal is less than the set time. In this case, the controller 500 may be configured to generate a bookmark signal and store the location of the information currently displayed on the display device when the generation period of the second signal is equal to or greater than a preset time.

(Control unit of an e-book equipped with a signal generator for generating a three-phase signal)

In addition, when the first switch 100 is turned on as illustrated in FIG. 5, the e-book according to the present invention does not include the first signal generator 810 and the second signal generator 820. One that generates a high signal, generates a low signal when the second switch 200 is on, and generates a common signal when both switches are off. It may be configured to include a signal generator (800). In this case, a three-phase inverter or the like used in the control of the DC motor may be adopted as an element that may be used as the signal generator 800.

The control unit 500 of the portable e-book configured to further include a signal generator 800 for generating a three-phase signal as described above, when the generation period of the high signal exceeds the set time, the power supply control signal. And generate a page up signal if the generation period of the high signal is less than the set time, and generate a page down signal if the generation period of the low signal is less than the set time. In this case, the controller 500 may be configured to generate a bookmark signal and store the location of the information currently displayed on the display device when the low signal generation period is longer than a predetermined time.

When the power control signal is generated, the power manager 600 controls the power supplied to the driving circuit of the e-book. That is, when the power control signal is generated while the power is off, the power management unit 600 turns on the power so that the user can use the e-book, and the power is turned on. When the control signal is generated, the power is turned off.

The display device 700 receives and displays the information stored in the memory through the transmission bus unit 400 according to the page up signal and the page down signal generated by the controller 500. If the page up signal is generated, the display device 700 receives the information displayed on the previous screen of the information displayed on the current screen from the memory and displays the information. When the page down signal is generated, the display device 700 receives and displays information to be displayed on the subsequent screen from the memory displayed on the current screen. That is, when the page up signal is generated, the information stored at the previous address of the memory address where the information displayed on the current screen is stored is transmitted to the display device 700. When the page down signal is generated, the information displayed on the current screen is stored. Information stored at an address subsequent to the memory address is transmitted to the display device 700.

Hereinafter, the e-book of the present invention operates on the following principle. At this time, the e-book of the present invention may have the following embodiments according to the type of the switch also serves as a power switch.

(First embodiment)

A first embodiment of the present invention is characterized in that the page up switch is configured to function as a power switch.

The driving method of the e-book according to the first exemplary embodiment includes comparing the on period of the first switch 100 to a predetermined first setting time (S200), and turning on the first switch 100 (S200). If the on period is less than the first set time, the step of pageing up the content displayed on the screen by a predetermined amount (S300) and the on period of the first switch 100 is greater than or equal to the first set time Turning off the power of the e-book (S400), comparing the on period of the second switch 200 to a predetermined second setting time (S500), and the second switch 200 If the (on) period is less than the second set time (S600) to page down the content displayed on the screen by a predetermined amount (S600), and the on (on) period of the second switch 200 It is configured to include the step (S700) of storing the position of the content displayed on the screen if more than two set time. 6 is a flowchart illustrating a method of driving an e-book according to a first embodiment of the present invention.

First, when a user operates the first switch 100 and the first switch 100 is turned on (S100), the control unit 500 of the present invention may turn on the on period of the first switch 100. The comparison is made at the first preset time (S200). Hereinafter, the on period of the first switch 100 described in the present specification may be a period of generation of the first signal generated by the first signal generator 810 or generated by the three-phase signal generator 800. It is equal to the generation period of the high signal.

If the on period of the first switch 100 is less than the first setting time, the content displayed on the screen is pageed up by a predetermined amount (S300). That is, the screen one page previous to the current screen is shown to the user. There are many ways to page up, but one typical method is as follows.

First, among the currently displayed information, a memory address in which any information is stored is set as a reference position. Then, the information stored at the memory address before the reference position is transferred from the information stored at the reference position in reverse order. At this time, the position of the screen on which the information is displayed is displayed from the last position of the screen. That is, if the reference position is the n-th address, the memory address to which information is transmitted is made from the n-1st address to the n-2nd, n-3rd, and the like.

Alternatively, the amount of information scrolled according to the page up signal may be separately set, and information stored from the previous memory address to the reference position in the reverse order from the reference position may be displayed from the first position of the screen. That is, if the reference position is the nth address and the unit of the amount of information scrolled is m bytes, when the page up signal is generated, information stored from the n-mth address to the nth address is displayed in order from the first position of the screen.

If the on period of the first switch 100 is equal to or greater than the first set time, the present invention turns off the e-book by cutting off the power supplied to the e-book (S400). At this time, the present invention may be configured such that bookmarking is performed while the e-book is turned off and at the same time, the location of the content displayed on the current screen is stored. In addition, the e-book driving circuit of the present invention allows the power of the portion that determines whether the first switch 100 is on (on) in the power supply in each component of the e-book to be continuously supplied.

The portion with the highest power consumption in the e-book is the display device 700. Therefore, when the e-book is turned off, other parts operate even with a very small current, and thus power consumption can be reduced even if only the display device 700 which consumes a large power is turned off. Therefore, the present invention may be configured to turn off only the display device 700 of the e-book when the on period of the first switch 100 is equal to or greater than the first set time. However, in order to detect the supply of power again, the power of the portion that determines whether the first switch 100 or the second switch 200 is on should not be cut off. Such part may be the control unit 500 or may be a separately installed sensing unit.

If the control unit 500 determines whether the first switch 100 or the second switch 200 is on (on), the present invention turns off the power of the e-book by generating a power control signal ( Even if it is off, the control unit 500 supplies power so that the operation of determining whether the control unit 500 is on or off of the first switch 100 or the second switch 200 is not interrupted. Since the power consumed when the controller 500 determines whether the first switch 100 or the second switch 200 is on is much smaller than the power consumed by the display device, the controller 500 Even if power is supplied continuously, it does not affect battery life.

If the first switch 100 or the second switch 200 is a sensing unit provided separately, the present invention is to turn off the power of the e-book by generating a power control signal. Even if it is turned off, power is supplied to the sensing unit so that the sensing unit does not stop the operation of determining whether the first switch 100 or the second switch 200 is on. Since the power consumed when the sensing unit determines whether the first switch 100 or the second switch 200 is on is much smaller than the power consumed by the display device, power is continuously supplied to the sensing unit. Even if the battery life is not affected significantly.

If the user manipulates the second switch 200 and the second switch 200 is turned on (S100), the control unit 500 of the present invention maintains the on period of the second switch 200. The comparison is made to the second preset time (S500). The on period of the second switch 200 described in the present specification is a period of generation of the second signal generated by the second signal generator 820 or a row generated by the three-phase signal generator 800. low) is equal to the generation period of the signal.

If the on period of the second switch 200 is less than the second setting time, the content displayed on the screen is paged down by a predetermined amount (S600). That is, the screen one page behind the current screen is shown to the user. There are several ways to page down, but one typical method is as follows.

First, among the currently displayed information, a memory address in which any information is stored is set as a reference position. Then, the information stored at the memory address after the reference position is sequentially transmitted from the information stored at the reference position. At this time, the position of the screen on which the information is displayed is displayed from the first position of the screen. In other words, if the reference position is the n-th address, the memory address to which the information is transmitted is made from the n + 1th address to the n + 2th, n + 3th, and so on.

Alternatively, it is also preferable to separately set the amount of information to be scrolled according to the page down signal, and to display the information stored from the reference position to the memory address subsequent to that amount of units in order from the first position of the screen. That is, if the reference position is the nth address and the unit of the amount of scrolled information is m bytes, when the page down signal is generated, information stored from the nth address to the n + mth address is displayed in order from the first position on the screen. .

In this case, the present invention may be configured such that a bookmarking operation for storing the position of the content displayed on the current screen is performed if the on period of the second switch 200 is equal to or greater than the second preset time ( S700). The operation performed when the on period of the second switch 200 is equal to or greater than the second set time may be set to an operation that the e-book manufacturer considers to be necessary.

In addition, when the first switch 100 is turned on by the user operating the first switch 100 after the power of the e-book is turned off, the control unit 500 of the present invention may control the first switch 100. ) Is compared with the preset third set time. Thus, when the on period of the first switch 100 after the power is turned off is greater than or equal to the third set time, the present invention turns on the power of the e-book again so that the user can use the e-book. do. At this time, the present invention turns on the power of the e-book and at the same time displays the contents of the memory address stored by the bookmark display operation before the power of the e-book is turned off. To the user. As a result, the user can turn on the e-book and read the contents of the page memorized before turning off the e-book.

According to the first embodiment, when the e-book is turned off, the on-period of the first switch 100 is set to be equal to or greater than the first set time, and the e-book is turned on when the e-book is turned on. The on-period of the second switch 200 may be set to be longer than or equal to the third set time. That is, when the second switch 200 is turned on by the user operating the second switch 200 after the power of the e-book is turned off, the control unit 500 of the first exemplary embodiment of the present invention has 2 The on period of the switch 200 is compared with the third preset time. Thus, when the on period of the second switch 200 after the power is turned off is greater than or equal to the third set time, the first embodiment turns on the power of the e-book again so that the user can read the e-book. Make it available. At this time, the first embodiment turns on the power of the e-book while simultaneously displaying the contents of the memory address stored by the bookmark display operation before the power of the e-book is turned off. To the user. As a result, the user can turn on the e-book and read the contents of the page memorized before turning off the e-book.

In the first embodiment, the first setting time and the second setting time are preferably configured to be the same, but may be configured not to be the same as necessary. The first set time and the third set time are preferably configured in the same manner. However, the first set time and the third set time may be configured to be the same.

(Second embodiment)

A second embodiment of the present invention is characterized in that the page down switch is configured to function as a power switch.

The driving method of the e-book according to the second embodiment includes comparing the on period of the first switch 100 to a predetermined first setting time (S200), and turning on the first switch 100 (S200). If the on period is less than the first set time, the step of page down the content displayed on the screen by a predetermined amount (S300 '), and the on period of the first switch 100 is the first set time If it is above, the step of turning off the power of the e-book (S400), and comparing the on (on) period of the second switch 200 to a predetermined second set time (S500), the second switch ( If the on period of the 200 is less than the second set time, the step of page up the content displayed on the screen by a predetermined amount (S600 '), and the on period of the second switch 200 And storing the position of the content displayed on the screen if it is equal to or more than the second preset time (S700). 7 is a flowchart illustrating a method of driving an e-book according to a second embodiment of the present invention.

First, when a user operates the first switch 100 and the first switch 100 is turned on (S100), the control unit 500 of the present invention may turn on the on period of the first switch 100. The comparison is made at the first preset time (S200). Hereinafter, the on period of the first switch 100 described in the present specification may be a period of generation of the first signal generated by the first signal generator 810 or generated by the three-phase signal generator 800. It is equal to the generation period of the high signal.

If the on period of the first switch 100 is less than the first setting time, the content displayed on the screen is paged down by a predetermined amount (S300 '). That is, the screen one page after the current screen is shown to the user. There are many ways to page down, but one typical method is as follows.

First, among the currently displayed information, a memory address in which any information is stored is set as a reference position. Then, the information stored at the memory address after the reference position is sequentially transmitted from the information stored at the reference position. At this time, the position of the screen on which the information is displayed is displayed from the first position of the screen. In other words, if the reference position is the n-th address, the memory address to which the information is transmitted is made from the n + 1th address to the n + 2th, n + 3th, and so on.

Alternatively, it is also preferable to separately set the amount of information to be scrolled according to the page down signal, and to display the information stored from the reference position to the memory address subsequent to that amount of units in order from the first position of the screen. That is, if the reference position is the nth address and the unit of the amount of scrolled information is m bytes, when the page down signal is generated, information stored from the nth address to the n + mth address is displayed in order from the first position on the screen. .

If the on period of the first switch 100 is equal to or greater than the first set time, the present invention cuts off the power supplied to the e-book to turn off the e-book (S400). At this time, the present invention may be configured such that bookmarking is performed while the e-book is turned off and at the same time, the location of the content displayed on the current screen is stored. In addition, the e-book driving circuit of the present invention allows the power of the portion that determines whether the first switch 100 is on (on) in the power supply in each component of the e-book to be continuously supplied.

The portion with the highest power consumption in the e-book is the display device 700. Therefore, when the e-book is turned off, other parts operate even with a very small current, and thus power consumption can be reduced even if only the display device 700 which consumes a large power is turned off. Therefore, the present invention may be configured to turn off only the display device 700 of the e-book when the on period of the first switch 100 is equal to or greater than the first set time. However, in order to detect the supply of power again, the power of the portion that determines whether the first switch 100 or the second switch 200 is on should not be cut off. Such part may be the control unit 500 or may be a separately installed sensing unit.

If the control unit 500 determines whether the first switch 100 or the second switch 200 is on (on), the present invention turns off the power of the e-book by generating a power control signal ( Even if it is off, the control unit 500 supplies power so that the operation of determining whether the control unit 500 is on or off of the first switch 100 or the second switch 200 is not interrupted. Since the power consumed when the controller 500 determines whether the first switch 100 or the second switch 200 is on is much smaller than the power consumed by the display device, the controller 500 Even if power is supplied continuously, it does not affect battery life.

If the first switch 100 or the second switch 200 is a sensing unit provided separately, the present invention is to turn off the power of the e-book by generating a power control signal. Even if it is turned off, power is supplied to the sensing unit so that the sensing unit does not stop the operation of determining whether the first switch 100 or the second switch 200 is on. Since the power consumed when the sensing unit determines whether the first switch 100 or the second switch 200 is on is much smaller than the power consumed by the display device, power is continuously supplied to the sensing unit. Even if the battery life is not affected significantly.

If the user manipulates the second switch 200 and the second switch 200 is turned on (S100), the control unit 500 of the present invention maintains the on period of the second switch 200. The comparison is made to the second preset time (S500). The on period of the second switch 200 described in the present specification is a period of generation of the second signal generated by the second signal generator 820 or a row generated by the three-phase signal generator 800. low) is equal to the generation period of the signal.

If the on period of the second switch 200 is less than the second setting time, the content displayed on the screen is pageed up by a predetermined amount (S600 ′). That is, the screen one page previous to the current screen is shown to the user. There are many ways to page up, but one typical method is as follows.

First, among the currently displayed information, a memory address in which any information is stored is set as a reference position. Then, the information stored at the memory address before the reference position is transferred from the information stored at the reference position in reverse order. At this time, the position of the screen on which the information is displayed is displayed from the last position of the screen. That is, if the reference position is the n-th address, the memory address to which information is transmitted is made from the n-1st address to the n-2nd, n-3rd, and the like.

Alternatively, the amount of information scrolled according to the page up signal may be separately set, and information stored from the previous memory address to the reference position in the reverse order from the reference position may be displayed from the first position of the screen. That is, if the reference position is the nth address and the unit of the amount of information scrolled is m bytes, when the page up signal is generated, information stored from the n-mth address to the nth address is displayed in order from the first position of the screen.

In this case, the present invention may be configured such that a bookmarking operation for storing the position of the content displayed on the current screen is performed if the on period of the second switch 200 is equal to or greater than the second preset time ( S700). The operation performed when the on period of the second switch 200 is equal to or greater than the second set time may be set to an operation that the e-book manufacturer considers to be necessary.

In addition, when the first switch 100 is turned on by the user operating the first switch 100 after the power of the e-book is turned off, the control unit 500 of the present invention may control the first switch 100. ) Is compared with the preset third set time. Thus, when the on period of the first switch 100 after the power is turned off is greater than or equal to the third set time, the present invention turns on the power of the e-book again so that the user can use the e-book. do. At this time, the present invention turns on the power of the e-book and at the same time displays the contents of the memory address stored by the bookmark display operation before the power of the e-book is turned off. To the user. As a result, the user can turn on the e-book and read the contents of the page memorized before turning off the e-book.

In the second embodiment, the ON period of the first switch 100 is set to be equal to or greater than the first set time when the e-book is turned off, and the second book is set when the e-book is turned on. The on-period of the second switch 200 may be set to be longer than or equal to the third set time. That is, when the second switch 200 is turned on by the user operating the second switch 200 after the power of the e-book is turned off, the control unit 500 of the second embodiment of the present invention is configured to perform the second operation. 2 The on period of the switch 200 is compared with the third preset time. Therefore, if the on period of the second switch 200 after the power is turned off for more than the third set time, the second embodiment turns on the power of the e-book again to allow the user to read the e-book. Make it available. At this time, the second embodiment turns on the power of the e-book and simultaneously displays the contents of the memory address stored by the bookmark display operation before the power of the e-book is turned off. To the user. As a result, the user can turn on the e-book and read the contents of the page memorized before turning off the e-book.

In the second embodiment, the first setting time and the second setting time are preferably configured to be the same, but may be configured not to be the same as necessary. The first set time and the third set time are preferably configured in the same manner. However, the first set time and the third set time may be configured to be the same.

The e-book and the e-book driving method according to the present invention are configured to combine the power key and the page down key, or the power key and the page up key as compared with the conventional e-book and the e-book driving method. Therefore, the number of switches installed in the e-book can be reduced. As a result, since a wider area than the conventional area is secured on the entire surface of the e-book, the area ratio of the display area in the e-book can be further increased.

Claims (25)

Comparing the on period of the first switch to a first set time when the first switch is turned on, If the on period of the first switch is less than the first setting time, page up the content displayed on the screen by a predetermined amount; Turning off the power of the e-book when the on period of the first switch is equal to or greater than the first set time; When the second switch is on, comparing the on period of the second switch to a second set time; If the on period of the second switch is less than the second set time, page down the content displayed on the screen by a predetermined amount; And storing the location of the content displayed on the current screen when the on period of the second switch is equal to or greater than the second set time. The method of claim 1, If at least one of the first switch or the second switch is turned on again after the power is turned off, at least one of the first switch or the second switch is turned on again Comparing the to a predetermined third set time, The method further includes the step of turning on the power of the e-book when at least one of the first switch or the second switch is turned on for more than the third set time. A method of driving an e-book, characterized in that. The method of claim 2, wherein the step of turning on the power (on) And displaying the contents stored at the stored address on the screen when the e-book is powered off. The method of claim 2, wherein the first setting time and the third setting time are the same. The method of claim 1, wherein the first setting time and the second setting time are the same. The method of claim 1, wherein the step of page down Setting a memory address in which any one of the currently displayed information is stored as a reference position, And displaying information stored at the memory address after the reference position from the first position of the screen in order from the information stored at the reference position. The method of claim 6, wherein the reference position is a memory address in which information displayed at the last position of the screen among the currently displayed information is stored. The method of claim 1, wherein the step of page down Setting, as a reference position, a memory address in which the next information of the information displayed at the last position of the screen among the currently displayed information is stored; And displaying information stored at the memory address after the reference position from the first position of the screen in order from the information stored at the reference position. The method of claim 1, wherein the step of page up Setting a memory address in which any one of the currently displayed information is stored as a reference position, And displaying information stored at the memory address before the reference position from the information stored at the reference position from the last position of the screen in reverse order. 10. The method of claim 9, wherein the reference position is a memory address in which information displayed at the first position of the screen among the currently displayed information is stored. The method of claim 1, wherein the step of page up Setting a memory address in which information immediately before the first position of a screen is stored among the currently displayed information as a reference position, And displaying information stored at the memory address before the reference position from the information stored at the reference position from the last position of the screen in reverse order. Comparing the on period of the first switch to a first set time when the first switch is turned on, If the on period of the first switch is less than the first setting time, page down the content displayed on the screen by a predetermined amount; Turning off the power of the e-book when the on period of the first switch is equal to or greater than the first set time; When the second switch is on, comparing the on period of the second switch to a second set time; If the on period of the second switch is less than the second setting time, page up the content displayed on the screen by a predetermined amount; And storing the location of the content displayed on the current screen when the on period of the second switch is equal to or greater than the second set time. The method of claim 12, If at least one of the first switch or the second switch is turned on after the power is turned off, a time for which at least one of the first switch or the second switch is turned on is determined. Comparing to the third set time of, If the at least one of the first switch or the second switch is on (on) time is more than the third set time, further comprising the step of turning on (on) the power of the e-book configured to E-book driving method characterized in that. The method of claim 13, wherein the step of turning on the power (on) And displaying the contents stored at the stored address on the screen when the e-book is powered off. The method of claim 13, wherein the first setting time and the third setting time are the same. The method of claim 12, wherein the first setting time and the second setting time are the same. The method of claim 1, wherein the step of page down Setting a memory address in which any one of the currently displayed information is stored as a reference position, And displaying information stored at the memory address after the reference position from the first position of the screen in order from the information stored at the reference position. 18. The method of claim 17, wherein the reference position is a memory address in which information displayed at the last position of the screen among the currently displayed information is stored. The method of claim 12, wherein the step of page down Setting a memory address in which the next information of the information displayed at the last position of the screen among the currently displayed information is set as a reference position, And displaying information stored at the memory address after the reference position from the first position of the screen in order from the information stored at the reference position. The method of claim 12, wherein the step of page up Setting a memory address in which any one of the currently displayed information is stored as a reference position, And displaying information stored at the memory address before the reference position from the information stored at the reference position from the last position of the screen in reverse order. 21. The method of claim 20, wherein the reference position is a memory address in which the information displayed at the first position of the screen among the currently displayed information is stored. The method of claim 12, wherein the step of page up Setting a memory address in which information immediately before the first position of a screen is stored among the currently displayed information as a reference position, And displaying information stored at the memory address before the reference position from the information stored at the reference position from the last position of the screen in reverse order. A first switch and a second switch that are turned on by a user's operation, A memory unit for storing predetermined information and transmitting the information to the outside; A transmission bus unit coupled to the memory unit for transmitting and receiving the information; The period in which at least one of the first switch and the second switch is on is compared with a predetermined set time by comparing a period in which at least one of the first switch and the second switch is on. If the set time is exceeded, a power control signal is generated. If the period during which the first switch is on is less than or equal to the set time, a page up signal is generated and if the period for which the second switch is on is less than the set time. A control unit for generating a page down signal, When the power control signal is generated a power management unit for controlling the supply and shutdown of power connected to the system, and When the page up signal is generated, the information stored in the previous address of the address where the currently displayed information of the memory unit is stored is transmitted through the transmission bus unit, and when the page down signal is generated, the current state of the memory unit is transmitted through the transmission bus unit. A portable e-book comprising a display device for receiving and displaying information stored at an address subsequent to an address at which the displayed information is stored. 24. The portable e-book as set forth in claim 23, wherein the memory unit comprises a fastening means that can be separated / coupled to the transmission bus unit. The memory unit of claim 23, wherein the controller is further configured to store an address at which information currently displayed on the display device is stored when the period in which at least one of the first switch and the second switch is turned on exceeds the set time. Portable e-book further comprises a bookmark control signal stored in the.