Touch-screen display. RU patent 2520347.

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to touch-screen displays. System comprises multiple touch-reading circuit modules configured to perform interpolation between multiple adjacent electrodes read simultaneously by touch and to output corresponding interpolated touch-reading data with a resolution greater than for the interval between said electrodes, wherein row and column electrodes have a discontinuity for dividing the electrode into parts, one of said parts having an electrical connection on one side of the display screen, and the other part having an electrical connection on the opposite side of the screen.

EFFECT: high effective reading resolution.

14 cl, 7 dwg

THE TECHNICAL FIELD TO WHICH THE INVENTION RELATES

The invention relates to improved technology for the implementation of the touch screen display, in particular reading touch projection capacitive screen for large electrophoretic display, and to devices for reading electronic documents, implementing these technologies.

THE LEVEL OF TECHNOLOGY

Prior art relating to the devices of reading of electronic documents, can be found in US6,124,851, US2004/0201633, US2006/0133664, US2006/0125802, US2006/0139308, US2006/0077190, US2005/0260551, US6124851, US6021306, US2005/0151742 and US2006/0119615. Examples of devices of reading of electronic documents are Iliad Ilex (RTM), Amazon Kindle (KIM) and Sony (RTM) Reader. Prior art relevant to the energy savings can be found at: US2007/0028086, US2007/0115258 and US7058829.

Previously documented devices of reading of electronic documents, using electrophoretic display with flexible or resistant to bending backplane-based plastic (deposited from solution) electronics, for example, in our earlier PCT applications/GB2006/050235, PCT/GB2008/050980, PCT/GB2008/050977, PCT/GB2008/050985, PCT/GB2008/050985 and PCT/GB2008/050985, hereby included in this description by reference.

Specialist in the field technique will take into consideration the range of touch-screen technologies. Have been described reader electronic documents with sensitive to the touch display using the technology resistive touchscreen, W02007/012899. However, especially useful technology touch screen is capacitive sensing, in particular projection capacitive reading touch. This usually applies XY matrix thin conductive electrodes, mechanical located behind the front surface of the display screen, projecting an electric field on the other side of the display screen. Touch screen leads to a capacitive resistance between the finger and the reading electrodes that changes the capacitance of the connection between the wires in subjected to touch the X-Y position, this change mutual capacitance is measured to detect the position of the touch. The term "projection capacity" arose from the lines of the electrostatic field, projected reading electrodes. Alternative technology capacitive read, sometimes called surface or absolute capacity reading, is based on approximation by the user's finger, the connection with the earth and the detection of change in absolute capacity (relative to the earth) to identify the location of the touch.

Projected capacitive reading touch widely used in mobile phones, personal media players and similar devices using transparent electrodes ITO (doped tin oxide India), applied to the internal surface in front of the displayed information. However, there is a problem with the achievement of high resolution read because of the large number of compounds of the electrodes, are required to strip back to the same integrated circuit reading touch, and because of that fine (thin) track ITO are relatively resistive. It is necessary to take into account that these problems are aggravated as the increased size of display.

One solution to these problems is to apply interpolation between the electrodes sensors to increase the effective resolution reads. Integrated circuit reading touch for projected capacitive touch screens with such interpolation, for example, are available for purchase from the Corporation, Cypress Semiconductor, in particular in their devices PSOC (programmable system on chip (RTM)), which carry out the so-called "sliders", which perform a linear interpolation for increased accuracy of the reading. However, there is a need for improved technology, in particular for large screen displays.

DISCLOSURE OF THE INVENTION

Therefore, according to the first aspect of the invention, the proposed system of reading touch projection capacitive screen, and the system contains an electronic display screen, and mentioned the display includes many essentially transparent and lowercase column electrodes to ensure projected capacitive reading touch; and many modules sense of touch connected to the mentioned line and column electrodes for reading touch mentioned display screen, with each referred module sense of touch has many connections reading to connect with many of the mentioned electrodes and output data reading touch, and each referred module sense of touch is configured to perform the interpolation between a few simultaneous touch of many allied mentioned electrodes, and for a list of relevant interpolated data reading touch with a resolution greater than for the interval between these electrodes; and output data capture system for issuing interpolated in rows and columns of data reading touch, with each of the mentioned lowercase electrodes and each of the mentioned column electrodes gap has to divide the electrode on the first and second parts, and one mentioned first and second parts of the first electric connection on one side of the display screen, and the other of the above-mentioned first and the second part is the second electric connection on the opposite side of the display screen; the first of these modules sense of touch has mentioned many connections reading, United mentioned first electrical connections are mentioned lowercase electrodes, while the second of the aforementioned modules sense of touch has mentioned many connections reading, United with the mentioned second electrical connections are mentioned lowercase electrodes, with a third of these modules sense of touch has mentioned many connections reading, United mentioned first electrical connections are mentioned column electrodes, and the fourth of these modules sense of touch has mentioned many connections reading, United with the mentioned second electrical connections are mentioned column electrodes; and the system of reading additionally contains a controller, connected to these outputs data reading touch mentioned first, second, third and fourth modules sense of touch, and referred to the controller is configured to select mentioned interpolated data reading touch from one of these first and second modules of the sense of touch to issue mentioned interpolated by rows of data reading touch with the mentioned data reading systems, these choice of the mentioned first and second modules schemes reading touch depends on the mentioned interpolated data reading touch mentioned the third and fourth modules sense of touch, and referred to the controller is configured to select mentioned interpolated data reading touch from one of the mentioned third and four modules of the sense of touch to issue mentioned interpolated by column read data in touch with the mentioned data reading systems, these choices mentioned interpolated data reading touch from one of the mentioned third and the fourth module of the sense of touch depends on the mentioned interpolated data reading touch mentioned first and second modules of the sense of touch.

In variants of implementation of the system read one module of the sense of touch is provided for connection to each end of a broken line and column lines, and options for implementation, essentially all of the electrical connections to each of the two ends of the lower electrode line and column electrode lines are in one module of the sense of touch, which interpolates on the electrode lines.

Therefore, the preferred options for implementing the display screen is segmented in such a way that both lowercase and column electrodes continue only to approximately half of the display screen with both parties, and all the ends of the electrodes on each side of the display screen go to the appropriate first, second, third and fourth modules sense of touch (or integrated circuit). In this case the pair (interpolating) (lowercase) modules position reader Y can be used to determine which column module reading should be used to determine the position X (column), through the identification of whether the string touch about one or the other end of the column and, therefore, about one or the other (column) modules reading X. Accordingly (interpolating) output from column modules reading can be used to determine which of lowercase modules reading should be used when reading position Y (interpolator). In addition, the preferred options for implementing the use of a single integrated circuit reading touch to perform the function of each module of the sense of touch gives you the ability to position each of these integrated circuits (IC) physically close to one party (or edge) display screen, close to the connections with the appropriate ends of the line and column electrode lines, thus reducing the distance through which need to spend interconnects, and minimizing external noise. In preferred embodiments of the implementation of each of these modules the sense of touch or IP has a serial output data, such as the SPI bus (synchronous serial peripheral interface) or I2C bus (the link between integrated circuits).

In preferred embodiments of the implementation of the controller is implemented in a separate microprocessor or microcontroller, for example, the AVR microprocessor (registered trademark) from Atmel Corporation. In variants of implementation of modules of the sense of touch perform interpolation few provisions between the electrodes, and the microprocessor controller chooses interpolated data for output. Depending on the configuration of reading touch can detect multiple touches or controller can be configured to run deviations multiple touch on the basis of the outputs of the modules of the sense of touch. Should be taken into account that one physical integrated circuit can include two modules of the sense of touch, and therefore, a single physical device can provide two separate lagernyj channel.

In preferred embodiments of the implementation of the microprocessor controller also identifies gestures and/or geometric objects such as lines and circles that are primitives for gestures, and displays the data object and/or gesture; in preferred embodiments of the implementation of the microprocessor controller also displays interpolated in rows and columns these provisions, as well as higher-level data, to give the opportunity to record the relevant data image back to the display as indications on the display where the display was subjected to touch, or as an icon, or other reactions interpreted gesture, or both. This approach, for example, provides a combination of recognition, gesture and custom annotation of the document on the device for reading electronic documents, because interpolated in rows and columns of data provision, in addition to the recognition, gesture, provides the possibility of such annotation, as well as reducing the overall flow of data and facilitate the separation of different types of processing tasks between the controller and a higher level the main processor.

Options for implementation of the above system of perception touch screen is especially useful when applied to large electrophoretic display screen, for example, the display screen with active or rewritable the display with a diagonal measurement of at least 20 cm, particularly flexible or resistant to bending the electrophoretic display screen, because these cases represent a particular problem for projected capacitive reading touch. In preferred embodiments of the implementation of the device of reading of electronic documents, active display area is at least sufficient to render the page text on the A4 or U.S. format "letter size" in at least the scale of 0.7:1.

In preferred embodiments, the implementation of such a device of reading of electronic documents system controller reading touch projection capacitive screen also performs power management. Thus, the reader of the document can also contain the main processor to control the display of information on the display screen, (rechargeable) battery and managed the power switch between the main processor and battery to completely turn off the power at the main processor. The device for reading documents with electrophoretic display, the display is non-volatile, that is, the image remains on it, even when power is removed, so you can work in a mode in which the reader is mainly off. The power turns on only when you need to perform some action, more precisely, to change or update the displayed information. In such a system it is desirable to completely turn off the power at the main processor, because even a few microamps of current in the standby mode can reduce the time battery life with potentially several months to potentially several days. However, in order to operate in a mode in which the power from the main processor is completely removed, the modules of the sense of touch and the controller can get food for you to recognize the gesture resume and apply power to the main processor to perform the desired action (gesture resume does not have to be a gesture, specially given to reactivate the device, but, for example, can contain swipe pages). Thus, the perception of touch screen display and interpretation applied gesture can run schemes for low energy consumption, and the main processor can be powered in response to perform the desired action when the gesture will be recognized. To further reduce power, it is desirable that instead modules sense of touch was nourished all the time, they can be polled at intervals, and power can only be supported when read by touch. For this reason it is desirable that the modules sense of touch (for example, PsoCs (RTM)) was nourished for a short time interval, for example, less than 1 MS.

In variants of implementation of the main processor performs a cold reset in response to supply power to the main processor that is included before you perform the desired action.

For this reason, the options of implementation is loaded, only the selected part of the operating system-core processor, which is necessary to perform the desired action that a processor has started to work quickly to improve the user experience.

In a related aspect of the invention provides a method for reading a custom touch electronic display screen, with four parties, containing the first couple of opposite sides and the second pair of opposite parties orthogonal to the first, and with many essentially transparent and lowercase column electrode lines before the information displayed mentioned display screen, and the method includes: breaking each mentioned electrode line into two parts, one connects essentially all of the electrode lines mentioned on each side with one module schematic reading touch, touch, a few modules on one mentioned a pair of opposite sides to determine what modules are connected with orthogonal pair of opposite parties, shall be used to detect the position along the direction parallel to the mentioned orthogonal pair of opposite parties; and the use of the above specific module on each of two orthogonal parties mentioned display screen to determine the X-Y position touch mentioned display screen, a matter referred to specific modules.

In preferred embodiments of the method, as described earlier, it is preferable to connect the module to read touch with essentially all of the electrode lines on the side or edge of the screen, to allow interpolation between the touch, read these electrode lines, without communication between adjacent modules reading touch.

The invention also provides for the media, such as disk or non-volatile memory that stores the code for the control of the processor to the controller in the above systems/methods.

BRIEF DESCRIPTION OF DRAWINGS

These and other aspects of the invention next will be described only as an example, with reference to the attached figure, which:

Fig. 1a-1c - front surface of the display, rear view and the view in the vertical cross-section of the device for reading electronic documents;

Fig. 2 - vertical cross-section of the display device in Fig. 1;

Fig. 3a and 3b - structural scheme of the system power control for devices of reading of electronic documents according to the variant of the invention, and the block diagram of the sequence of method of cold boot procedure used by the power management system according to Fig. 3a;

As you can see, the preferred options for implementation unit has essentially transparent front panel 100, for example, made from Perspex (RTM), which acts as a structural element. Layer 106 schema Builder pixel active matrix can contain an array of organic or inorganic thin-film transistor, for example, as disclosed in WO01/47045. However the front panel is not mandatory - sufficient physical rigidity, for example, may be secured by substrate 108, possibly in combination with one or both of sealing gaskets 102, 110.

Illustrated example of design contains a substrate 108, usually made of plastic, such as PET (polyethylene terephthalate), which made a thin layer 106 schemes shapers pixel active matrix organic. On top of this is attached, for example, glue, electrophoretic display 104, but can also be used alternative means of display, such as the display device on organic LED (light-emitting diodes, LED or LCD display device. Waterproofing lining 102 superimposed on top electronic display 104, for example, from polyethylene and/or Aclar (TM), fluoropolymer (polychlorotrifloroethylene - PCTFE). Waterproofing lining 110 preferably also provided under the backing of 108; because this sealing gasket does not have to be transparent, preferably waterproof gasket 110 includes metal sealing gasket, such as a layer of aluminum foil. It provides waterproofing lining the opportunity to be thinner, improving thus the overall flexibility.

In preferred embodiments of the implementation of the display environment is reflective display environment, in particular by electrophoretic display facility, and the HSBP provides flexible substrate, such as PET or PEN (polyethylene-Naftalan). Preferably, the motherboard is manufactured using-based solutions transistors, preferably profiled by methods such as Electromechanical printing, laser ablation or photolithography. For more details of this can be found in the earlier patent applications of the applicant, in particular, includes WO 01/47045, WO 2004/070466, WO 01/47043, WO 2006/059162, WO 2006/056808, WO 2006/061658, WO 2006/106365 and PCT/GB2006/050265, all of which are hereby included in this document by reference in its entirety.

Approximate approximate thickness of layers are 100 microns for waterproofing strip 110, 200 microns for substrate 108, 5-6 m for the active layer 106, 190 microns for display 104 and 200 microns for waterproofing strip 102. Set of layers 102-110 forms a hermetic electronic display 112; which, preferably attached with glue, to touch sensor, such as described, and transparent panel 100 display. Front panel 100 can have a thickness in the range 0.1-2 mm, for example, about 1 mm or about 0.2 mm

As illustrated, conductive electrode line 101, such as ITO, to read touch are located behind the front panel of the device, though, in the alternative implementations, they can be located anywhere in a different place. Set of transparent electrodes touch screen can be laminated on the renderer and the backplane of the display (using the contact glue).

Electrode layer can be conductive polymer or metal layer, such as copper, Nickel, gold or silver, or suitable for printing metal. The layer can be applied using technologies such as vacuum deposition, technology electroplating and printed, such as screen printing. Intermediate insulating layer can be applied through technologies such as coating technology or print spray or knurling. Connection with electrode layers, for example, can be formed mechanically, with glue, or by welding or brazing.

Implementation options for the device, thus, include sensitive to capacitive touch electrophoretic display, preferably, projected capacitive sensitive to the touch electrophoretic display, using the system of reading touch, as described in more detail later. It can be used to identify gestures, to select the documents and/or pages, paging back and forth and the like. In variants of implementation treatment reading touch can be such that gestures are indifferent to the position/orientation, so that the user can perform the same gesture in any location to obtain the same result and, according to the options of implementation, regardless of the orientation (portrait or landscape) of the device. In such scenarios, the implementation of the documents, moreover, can be "tagged" electronically, data partitioning, recorded or associated with the display of an electronic document. Additional user controls, optionally also sensitive to the touch, can be provided at the border around the active display area.

In variants of implementation of the device for reading electronic documents has connectors that are located along the edge of the device to provide device connectivity with other electronic devices, such as traffic or desktop computer, PDA (personal digital assistant), mobile phone or 'intellectual' cell phone, or other similar device. USB (universal serial bus) and one or more wireless interfaces (for example, an infrared interface and/or Bluetooth) can also be designed to provide the ability to transfer documents to and from the device for reading electronic documents.

POWER MANAGEMENT

Fig. 3a shows the preferred architecture 500 power control for devices of reading of electronic documents, including electrophoretic display 32.

The device for reading electronic documents includes sensitive to the touch display 400, as described previously. This allows the user to control the device by tapping and/or gesture; in the variants of implementation, no need key or control on/off. In preferred embodiments, implementation, data from the electrodes reading touch driven by a set of specialized processors 502a-d, one processor on each side of the display, options for implementation, microcontroller devices PSoC (registered trademark), for example, are available for purchase at Cypress Semiconductor Corporation. Each of them produces an output signal in additional control processor 504 over a serial I2C bus, options for implementation, the device AVRmega48 from Atmel Corporation (registered trademark), which includes comes-in flash memory, RAM (random access memory, RAM and EEPROM (electrically erasable programmable permanent memory, EEPROM). Processor 504 processes the data processor reading touch to combine the data and decides to touch (as detailed below), as well as to identify primitives gestures and/or gestures, and outputs the processed information on a matter of tapping into the main CPU 512 (Central processing unit, CPU, devices of reading of electronic documents through a bidirectional serial bus 522, for example, the SPI bus. Processor 504 also provides for a number of power management features, described below.

Sensitive to the touch display 400 can respond to conducting a pen and a finger. In this case, data XY location of processors 502a-d can be transferred into the main processor 512 in addition to these recognized gesture or primitive gesture, to allow the user to write on the display with the stylus and the CPU 512 - to process the data and submit them to the display driven 514 to display, to annotate a document.

The power for the device of reading of electronic documents issued from rechargeable batteries, 508, such as 3-volt lithium battery, via the main switch 506, which enables and disables the power of the entire device. Switch 506 has at least one input to control the on and off in options of implementation contains the key CMOS (complementary metal oxide semiconductor, CMOS), more generally, solid state key, such as key MOS-FET (on channel field unipolar MOSFET). The first bus 507 power supply produces a dial-up power from the main power switch on the auxiliary switch 510 power CPU, again containing managed key CMOS, which in turn is feeding the second public switched bus 511 power.

The device for reading electronic documents includes a main CPU 512, for example, the ARM device (registered trademark)with the bus 512a that connects the device to a flash memory 524 NAND flash, SD RAM 526, interface 528 Bluetooth interface 530 USB, and, optionally, other peripheral devices; bus 512a, moreover, attaches the CPU 512 controller 514 display, for example, implemented in FPGA (user-programmable gate array or ASIC (specialized integrated circuits), which in turn controls the display 32. In variants of implementation, the CPU and the display controller is implemented on a single chip, for example, using a custom microcontroller, such as Atmel CAP 9 series, the display controller is implemented using vnutrikletochnogo programmable block.

Display 32 has a specialized unit 518 display power to issue a relatively high voltages used for excitation of an electrophoretic display, the battery 508, which can be in the order of tens of volts. In the illustrated embodiment, the controller 514 display connected to dynamic RAM 516 (DRAM), containing the blocks of memory, at least one of which has its own separate power supply. DRAM 516 stores data for the controller 514 display and has a part to store data that represents the current state electrophoretic display, which has a separate dial-up power source; memory 516 physically can be a one memory device or many separate devices.

In Fig. 3a bus power supply shown triangular arrow, and the signal/control lines are shown using the arrows with a slightly pointed back. Thus, it can be seen that the bus 511 power supply, and power supply on the main CPU 512 also provides power supply for items 524, 526 memory, peripherals 528, 530, for the controller 514 display and source 518 display power and for the first part of memory 516 display. The main bus 507 power is feeding the second part of display memory, processors 502a-d and processor 504 (which provide the scanning of touch and power management). This bus power supply also includes a second power supply for the interface 528 Bluetooth. Charger 532 has a wired or wireless input external power and acts to charge the battery 508, as well as providing the ability to read battery status and issuance of the output signal low battery in the main CPU 512 (in other variants of implementation of this function reads the status of the battery can be ensured by other means). Charger 523 provides a signal detection recharge, as illustrated for the main switch, 506, but in other variants of implementation it can be configured differently, for example, to signal to the processor 504.

When running CPU 504 manages the switch 510 CPU power on and power off the main CPU, memory, CPU and peripheral devices, RAM, display, display controller and power supply display only when necessary, for example, in response to a user query to display the page. To ensure long battery life, preferably, of the order of several months, because even leakage current through the CPU is unacceptably high, it is preferable to completely remove power from the CPU and more associated items than to translate the CPU 512 in standby to work. However, it is preferable that the power was preserved for the second part DRAM 516, which stores data that represents the current state electrophoretic display. Since food for the entire CPU is turned off when the power is re-applied, the main CPU is, by definition, performs a cold reset, which potentially is a slow process. Therefore, it is preferable to minimize the delay between re-applying power to the CPU and the completion of the required user actions, and save the current state electrophoretic display helps achieve this. When the required user action was taken because the processor performs a cold reset in response to a user action, if desirable, the power of the CPU can simply be removed without prior notice CPU - that is, the handshaking process, requesting the power and provide the ID of the CPU that can occur off, optional.

In the illustrated embodiment, the elements of the system which are not exposed to turn off the power switch 510 power CPUs are minor processor 504 and processors 502 touch/gesture, so that the reader documents remains susceptible to a custom touch/gesture, when the main CPU is off. Alternatively, however, the processor 504 may have one or more inputs for buttons or switches on the device to allow reloading the main CPU.

The preferred embodiments of the device of reading of electronic documents also include the main switch 506 configured to turn on or off the power for all devices of reading of documents, for example, in response to the discovery that the battery 508 has a low battery. There are many different possible ways routing of signals that could be applied. As illustrated, charger 532 reads the state of the battery and gives a signal to the main CPU 512, directly or through the processor 504 manages off the main switch, 506. However, in other layouts charger 532 can directly manipulate off the main switch, 506, or this control can be performed through the circuit, which includes the CPU 504, but not the main CPU 512. The main switch 506, for example, can be included by detecting charging devices of reading of electronic documents and/or by means of detection function USB power provided by the interface 530 USB, which detects when there is a power from the connected socket USB. Options exercise of this power source, additionally or alternatively, can be used to recharge the battery 508.

Fig. 3b shows a block diagram of the sequence of method of cold boot procedure used by the power management architecture of Fig. 3a. The procedure begins with a complete lack of power, annexed to the CPU, but with the power applied to the second part of display memory and, preferably, at least to a part of working memory, which stores the operating system and/or parameters for the operating system.

At the stage S550 power is applied to the CPU 512, and starts a cold boot, the CPU initialize the system clock (not shown in Fig. 3a for clarity), SDRAM 526, memory management and other elements of the system. CPU 512 then reads the data restart management of working memory or flash memory to determine whether the boot in response to a specific user action, therefore, is there a previously saved state of the system, or does the system starting from the beginning of this type, as used when turning on the main switch, 506 (phase S554). If the system does a cold restart from the beginning, at the stage S556 system runs from the beginning, including the self-test, initialization status of any saved documents, checking software updates and the like. The procedure then continues on stage S566 to wait for a user command. In preferred embodiments of the implementation of the procedure, restart from the beginning is used only when the device at some point included for the first time, or after exceptional procedure, in particular, after discharge of the battery, full redundancy of power from the device, or in response to user operation control (latent) reboot.

At the stage S557 in variants of implementation, which remains a food for working memory (SDRAM), then the device status during the previous power off can be renewed by reading data, the device status from working memory. These data device status can have one or more of the register settings, settings, operating system and the operating system itself. In cases, when power is not stored in the working memory, the data can be retrieved from flash memory.

If the CPU 512 performs the second type of cold reboot, i.e. in response to a user action (which may include connecting to the USB or Bluetooth)then at the stage S558 main CPU 512 selects the procedure cold reboot, depending on user actions, and determines whether the desired action to be performed only a limited part of the operating system that is desirable, if possible, to speed up response. Preferred operating system is Windows CE (RTM). If the main CPU 512 joined in response to page turning, or a similar gesture manipulation of the page, then, at the stage 560, the main CPU loads the data of the relevant page from the flash memory 524 and gives them to a controller 514 display to display on electrophoretic display 32. In a preferred embodiment, the data pages are stored in flash memory 524 in the form of image data that can be written on the display through the display controller without significant extra processing.

If cold reboot of the main CPU 512 was carried out in response to a signal resume USB or Bluetooth, then at the stage S562 options in the implementation of the loaded module USB or Bluetooth connection, and start the procedure of data, usually to extract one or more documents or parts of documents from other computing devices such as desktop or portable computer systems, PDA, mobile phone or any other type of managed by the processor device. Optionally, synchronization may include sending data back to another computing device, for example, data annotation for the displayed page, recorded by the sensor 520 pen.

As soon as the main CPU was turned on, it, preferably, waits a defined period of time in standby further user input/commands (S566). This helps to improve the practical user experience by reducing the number of starts with cold reboot, for example, in cases when the user performs some action sequence. If no further user input is not accepted, then at the stage S568 CPU 512 instructs the processor 504 turn off of the CPU 512 to turn off the device for reading documents. Before switching off the CPU, the system records the above data the status of the device in working memory (if it is preserved food) and/or in flash memory, thus fulfilling a controlled shutdown. As mentioned earlier, the device of reading of electronic documents can be used to write and read, for example, to annotate readable page. The displayed document, for example, can include images, music, and in General, any material that can be printed on the page.

READING TOUCH

Fig. 4 shows an implementation option reading systems touch projection capacitive screen according to the invention, in which-like elements in Fig. 3a, specified identical to the reference positions. Part 400 sensor display 32 contains many transparent lowercase electrodes 600 and column electrodes 610 ITO. In one of the implementations used the matrix 400 sensors containing 30 columns for 38 rows with sensitive elements (step) 5 mm Each of small electrodes are divided in the middle by the rupture of electrical conductivity in two parts 600a, 600b, and column electrodes similarly split 610a, 610b. "Half of the electrode line on each side of the matrix 400a-d the sensors are connected with the corresponding module 502a-d sense of touch, all of which are variants of implementation implemented separate PSoC. Thus, reading divided into 4 PsoC. One of the advantages of segmenting the arrays this way is that can be applied more thin layer ITO, because of the architecture can sustain increased resistance ITO, thereby improving optical transparency.

Each of the modules 502 of the sense of touch is connected via a serial bus 612 I2C to the control processor 504. Control processor 504 also provides a separate line 613a-d, 614a-d survey and confirm. The controller 504 according to these provisions, X and Y, touch and gestures, options implementation with frequency 50 Hz, with a core processor 512 that processes information about gestures usually using a tablet input device driver, mouse or pen, the operating system, such as WinCETM. In variants of implementation of the SPI bus connects the controller 504 with the main processor 512.

While working the controller 504 manages reading system touch and polls modules 502 of the sense of touch to start scanning. Modules 502 schemes are either in standby mode or perform the scan, and the controller 504 manages profile power supply: power idle for PSoC has a value of about 10 mW and resume time work is less than 100 MS. After you activate the scan time is set to 30 MS, and the reverse bitmap active lines are issued via the bus 612 I2C. In one of the implementations of each of the modules 502 sense of touch contains the device CY8C24x94 that uses the library sliders Cypress to provide resolution of less than the number of sensors. The controller 504 merges X and Y coordinates and executes the recognition touch and gesture, and, optionally, has one or more buttons "return home". In more detail, the result Y determines the result of X is to be used, and the result of X determines which need to use the result in Y. More, referring to Fig. 4, one can say about the position of the line (Y)that a module 502a reading touch, or the module 502c reading touch could be used to provide this provision, and the modules 502b, 502d are used to select which modules 502a, is applied, using the module 502a, i.e. the values of Y0, if X is less than halfway through the screen and using the module 502c, i.e. the values of Y1, if you read the touch position is more than halfway across the screen. In this way, modules Y0/Y1 determine which line module 502b, 502d reading touch (X0 or X1) should be applied.

In principle, this approach can be extended by the division lines vertically and/or columns horizontally, for example, using two lowercase modules 502aa, 502ab for replacement module 502a, and so on. In this case, the modules 502b,d could have chosen which pair of small modules reading touch (pair left or right pair) would be used, and, optionally, on the contrary. Should be taken into account that the above can be extended to 3 or more modules of the sense of touch on each side of the matrix 400 sensors. However, this arrangement would use the connection between modules sense of touch along each side of the matrix sensors required interpolation by electrodes on the boundaries between modules.

The above architecture is also useful, as the controller 504 able to provide a single view of multiple deviations touch, and in the layout of this type, as shown in Fig. 4, complexity is reduced as there is no necessary connection between modules 502 of the sense of touch.

In the preferred controller implementations 504 also configured for the identification of a linear character (taps), as primitives for gestures. This can be done by identifying changes detected provisions touch on X,Y through a sequence of scans using, for example, a simple filter with a moving average or more complex filtering Kalman, to improve detection. The preferred implementation enforce the restriction 8 vectors 45 degrees and, after only, as it was identified conducting features, gesture, according to identify, is direct. For example, the curve may appear in the sequence of line segments and/or directions threshold. Some examples of what can be defined characters, are the following:

Z has the value {W→E, NE→SW, W→E}

N is set to{+90°, -45°, +90°}

N is set to{-45°, +45°, +90°}

Identification of threshold levels and gesture recognition, for example, can be implemented using a state machine or by use of the sliding window and pattern matching; in any case, the control program is small and fast.

In one of the implementations recognized gestures are communicated to the primary processor, running Windows CE, interface handler keyboard, and the XY coordinates are reported in the Windows CE interface tablet. The controller 504 in the variants of implementation moreover resumes-core processor 512 and controls power management, as described previously. In the preferred implementations XY coordinates, reported the primary processor, are used to allow annotation the document.

The preferred implementation reading systems touch have been described with particular reference to the reader system touch projection capacitive screen, but experts should take into account that segmented sensor design and management module reading, as well as the architecture of choice can be applied in the context of other types capacitive reading, as well as, in principle, with naebkasti the touch sensors.

Undoubtedly, many other effective alternatives can be created by an expert in the field of technology. It should be clear that the invention is not limited to described variants of implementation and covers modifications obvious to specialists in a given field of technology that are within the entity and the amount applied the claims.

1. The reading system touch projection capacitive screen, and the system contains: electronic display screen, and mentioned the display includes many essentially transparent and lowercase column electrodes to ensure projected capacitive reading touch; and many modules sense of touch connected to the mentioned line and column electrodes for reading touch mentioned display screen, with each referred module sense of touch has a lot of connections reading to connect with many mentioned electrodes and output data reading touch, and each referred module sense of touch is configured to perform the interpolation between a few simultaneous touch of many allied mentioned electrodes and for a list of relevant interpolated data reading touch with a resolution greater than for the interval between these electrodes; and output data capture system for issuing interpolated in rows and columns of data reading touch; each of these small electrodes each of the mentioned column electrodes has the gap separating the electrode on the first and second parts, and one mentioned first and second parts of the first electric connection on one side of the display screen, and the other of the above-mentioned first and the second part is the second electric connection on the opposite side of the display screen; the first of these modules sense of touch has mentioned many connections reader that is connected to the first-mentioned electrical connections are mentioned lowercase electrodes, and the second of the aforementioned modules sense of touch has mentioned many connections reader connected to the mentioned second electrical connections are mentioned lowercase electrodes, with the third of these modules sense of touch has mentioned many connections reader that is connected to the first-mentioned electrical connections are mentioned column electrodes, and the fourth of these modules sense of touch has mentioned many connections reader connected to the mentioned second electrical connections are mentioned column electrodes; and the system of reading additionally contains a controller, connected to these outputs data reading touch mentioned first, second, third and fourth modules sense of touch, and referred to the controller is configured to select mentioned interpolated data reading touch from one of these first and second modules of the sense of touch to issue mentioned interpolated by rows of data reading touch with the mentioned data reading systems, and referred to the choice of the mentioned first and second modules of the sense of touch depends on the mentioned interpolated data read the touch of the said third and fourth modules sense of touch, and referred to the controller is configured to select mentioned interpolated data reading touch from one of the mentioned third and four modules of the sense of touch to issue mentioned interpolated by columns of data reading touch with the mentioned data reading systems, and the above mentioned choice interpolated data reading touch from one of these third and fourth modules sense of touch depends on the mentioned the interpolated data reading touch mentioned first and second modules of the sense of touch.

2. The reading system touch projection capacitive screen according to claim 1 in which for each side of the four sides mentioned display screen, essentially all of these electrical connections electrodes on this side of the screen are connected with one mentioned module sense of touch.

8. The reading system touch projection capacitive screen according to claim 7, optionally contain additional or main processor, connected to the mentioned data reading systems, to receive mentioned interpolated in rows and columns of data reading touch and mentioned data object or gesture and for generating the appropriate image data from the mentioned interpolated in rows and columns of data read-touch recording mentioned display screen to display an image, depending on the mentioned a few touch.

9. The device for reading electronic documents containing reading system touch projection capacitive screen according to claim 1 in which the electronic display screen is resistant to bending electrophoretic display with an active area of a display with a diagonal measurement of at least 20 see

10. The device for reading electronic documents containing reading system touch projection capacitive screen according to claim 1, and additionally contain: the main processor to control the display of information on the above screen; the battery to supply for these core processor mentioned modules sense of touch and referred to the controller; and managed the power switch is connected between these rechargeable battery and mentioned the main processor to turn off and turn on the power referred to the main processor, and mentioned controlled power switch is a control line, connected to manage the said controller, and these controller configured to detect a user gesture of resuming the work on the electronic display screen and to enable power referred to the main processor in response to the above discovery.

11. The device of reading of electronic documents according to paragraph 10, in which the modules of the sense of touch are supported in a state of low when referred to a managed switch is turned off, and referred to the controller is configured to periodically poll mentioned modules sense of touch to detect mentioned user gesture resume.

12. The method of reading a custom touch electronic display screen, with four sides containing the first couple of opposite sides and the second pair of opposite parties orthogonal to the first, and with many essentially transparent and lowercase column electrode lines before the information displayed mentioned display screen, and the way is that: break every mentioned electrode line into two parts, one connects essentially all of the electrode line mentioned on each side with one module of the sense of touch; use the touch, a few modules on one mentioned a pair of opposite sides to determine which modules, United orthogonal pair of opposite parties, shall be used to detect the position along the direction parallel to the mentioned orthogonal pair of opposite parties; and use referred to a specific module on each of two orthogonal parties mentioned display screen to determine the X-Y position touch mentioned display screen, a matter referred to specific modules.

13. The method indicated in paragraph 12 additional consisting in the fact that they use the said module is connected basically with all the electrode lines mentioned on the side of the screen to perform the interpolation between the touch, a few mentioned electrode lines, to determine mentioned X-Y position.

14. The media containing code management processor for implementing the method indicated in paragraph 12 these code management processor is configured to use touch read by the module at one mentioned a couple of opposite parties, to determine which of the modules, the United orthogonal pair of opposite parties, shall be used to detect the position along the direction parallel to the mentioned orthogonal pair of opposite parties, and to use the mentioned specific module on each of two orthogonal parties mentioned display screen to determine the X-Y position touch mentioned display screen, a matter referred to specific modules.