Frequently Asked Questions
  1. What are the differences between a write screen and a touch screen?
  2. What are the differences between a write screen and a tablet screen?
  3. How a touch screen works?
  4. What is a touch screen?
  5. Who makes this technology?
  6. How common is it?
  7. Do you expect this technology to eventually dominate computers?
  8. What is the interface technology?
  9. What is the rough estimate for 100 and 500 membranes
    approximately 2" x 7"?

  10. How thin can a resistive touch screen be?
  11. Is there a software solution that will integrate into the Win95/NT environment and supply a keyboard on the display that can be driven by a mouse or a touchscreen to allow user textual input?

Trouble Shooting

  1. Installation of touch drivers (BUS CARD)
  2. RMS-Touch Installation
  3. Installation of Win95 - New driver for the serial controller
  4. Difficulties installing DOS drivers, the install.exe is corrupted.
  5. The touch screen does not react to touch.
  6. Neither the mouse or the touch screen works after installation.

Frequently Asked Questions

  1. What are the differences between a write screen and a touch screen?
    A write screen is a pen device while the touch screen is a pointing device. In addition to the touch screen's functions, a write screen controller has special algorithm that smoothes the writing stroke, supports right-click, tends to be used under an operational system with higher resolution, etc. In functional-wise speaking, the write screen can do whatever a touch screen can do; vise visa is not true. Below are detailed compares.

    Task

    Write Screen

    Touch Screen

    Left-click , drag, double-click1

    Yes

    Yes

    Right-click drop down menu

    Yes, touch with a short steady hold

    No

    Handwriting

    Yes, smooth writing trace

    No, saw-tooth like trace

    Hand rest2

    Yes

    No, false touch registered

    Touch area to register 2

    Tiny only, stylus or finger nail

    Tiny and Large, finger tip

    Calibration utility

    Yes

    Yes

    Annotation software

    Yes

    No

    Resolution 4096 x 4096 or above 1024 x 1024 or below
    Device driver Microsoft Windows' HID Specific
    Controller interface USB USB, ISA card, COM, Parallel

    Note 1: not every vendor's controller has the double-click function. Hi-Tech's has it.
    Note 2: analog resistive (AR) touch screen has two layers. There are spacer dots that separate (insulate) these two layers. Higher density spacers is used in the write screen to reject the hand rest action. The resolution of write/touch screen depends on the controller, not on the number of the spacer dots.

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  2. What are the differences between a write screen and a tablet screen?
    A write screen is a pen device while the tablet is a drawing device. A write screen is useful for the most of people while the tablet screen is special for artists. Below are detailed compares.

    Task

    Write Screen

    Tablet

    Left-click , drag, double-click, pull- down, handwriting

    Yes

    Yes

    Pen input

    Any pressure media, finger or stylus

    EMR special pen with buttons

    Right-click

    Yes, touch with a short steady hold

    Yes, a button on the pen

    Cost

    Estimated 1/8 price to the tablet

    Expensive

    Assemble integration

    Easy

    Complicated

    Design integration

    Retrofit various LCD sizes

    Only available on the fixed sizes

    Interface

    USB

    Serial (RS232)

    Hand rest

    Yes

    Yes

    Power consumption

    Better, less current drawn @no touch

    Worse, EM transmiting and receiving occurs always

    Response time

    Fast, ADC only

    Slow, scan+transmit+receive & ADC

    Inking effect1

    No

    Yes, various pressure applied on pen tip

    Eraser button2

    No

    Yes, a button on the pen

    Note 1: is a good feature for an artist on drawing. Does handwriting really need this?
    Note 2: can be achieved via software menu selection.

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  3. How a touch screen works?
    A touch monitor is a regular monitor that integrated with a touch sensor in front of its display. The monitor is still connected to the VGA controller board. The touch sensor communicates to the PC via connection to its own controller. The touch controller can be an add-on board, or a small box (serial controller) that hooks to the COM port. If the touch sensor goes bad, the monitor can still work. If monitor goes bad, the touch sensor can still work; though you may not see what you are touching to. The touch device driver (a software) plays very important role. Once the driver installed, the touch screen will work as if a mouse installed. Further more, the touch driver supports both a touch screen and a mouse concurrently. In this scenario, the mouse hooks to its own port/controller. The applications if work based on the mouse, then will work to the touch screen without any human interactive changes. A calibration utility (a software) that makes the touch positions on a touch sensor to be correlated to the operating system's display coordinates. The system's cursor is driven by both the touch screen and the mouse. The motions, click-down, click-release and dragging are all emulated by the touch screen driver.

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  4. What is a touch screen?
    The touch screen is a pointing device. Similar to a mouse, the device is not generating any commands. The application is actually the one that handles the 'clicking' and at which 'position of the click is registered. Via a mouse-emulation driver, the touch screen reports the click and the position, just like a mouse, to the operating system. The application gets the information and can not distinguish the info is acturally from a touch screen.


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  6. Who makes this technology?
    Hi-Tech Instruments, Inc.


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  8. How common is it?
    Touch screens are very common in POS and Kiosk systems.


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  10. Do you expect this technology to eventually dominate computers?
    NO, touch screens are too expensive for 'everybody.' They are only good for some applications.


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  12. What is the interface technology?
    Interfaces include: add-on card, serial interface, etc.
    If you mean "touch screen" technology, then interfaces are ANALOG RESISTIVE, ANALOG CAPACITIVE, INFERRED, SURFACE WAVE, WEIGHT SCALE, CORNER SCALE, etc.


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  14. What is the rough estimate for 100 and 500 membranes approximately 2" x 7"?
    You are looking at $49/ea @ qty. 100 to 500 on size 2"x7" touchscreen. The prototype cost is about $85/ea. Also, the touchscreen can not be used by itself. You have to have an electronic interface. We have ISA bus card, or serial controller via COM port, priced $85/ea.


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  16. How thin can a resistive touch screen be?
    To our knowledge, the touch screen membrane materials have 4 mil and 7 mil thickness. The resistive technology uses 2 layers of these kind of membrane material. Plus the thickness of the spacer and/or insulation tape in about 2 mil (to separate the 2 layers), you are looking at about 10 mil for an analog resistive touch screen (membrane only).


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  18. Is there a software solution that will integrate into the Win95/NT environment and supply a keyboard on the display that can be driven by a mouse or a touchscreen to allow user textual input?
    This is an application. Not a device-side issue. Triple-click may not be a good idea. Could be a keyboard icon, similar to the clock icon, that always displays on the 'top'. When touched, find the previous instance, SendMessage of a char to that instance
  19. .

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Trouble Shooting

  1. Installation of touch drivers (BUS CARD)
    Important notes:
    1. In DOS 6.0 or up, you can use DOS command MSD to check IRQ status.

    2. Disable your peripheral device whichever uses IRQ5, (the TSC0001 card has manufacturer default set to JP5 for IRQ5). Pay special attention to the sound card, most of which is installed at IRQ 5 and will be conflict to the touch card. Look into your AUTOEXEC.BAT, make necessary modification to have SET BLASTER=A220 D1 I10 H1 T4, where could be I5 setting for IRQ5; and CONFIG.SYS, make necessary modification to have DEVICE=....\...SYS P220 I10 D1 E1, where could be I5 setting for IRQ5.

    3. There are more details described in the README file about all drivers and information.


    For Windows

    1. Use any editor to add the line below into C:\AUTOEXEC.BAT file, such that Windows 95 will start from \WINDOWS directory. (command line means Change Directory to Windows)
      cd windows

    2. Put diskette into drive A.

    3. Use Windows File menu, chose Run item, type up A:\SETUP, and click on OK button.


    What will be happen when these setups are done:

     


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    For DOS

    1. If you have a mouse, do this step first. Else, skip to step 2. Connect your mouse to the COM1 port. Load up the DOS mouse driver, MOUSE.COM for COM1.

    2. Copy two (2) programs, MTOUCH.COM & CALIB.EXE, into [your-path]\ directory. Load up the touch screen mouse emulation driver for DOS, MTOUCH.COM. At DOS prompt, type up MTOUCH command. To remove MTOUCH.COM driver, simply do the same command again.

    3. Run calibration program. At DOS prompt, type up CALIB command.

    4. If IRQ and/or PORT need to change, then you need to do two things: a) set associated jumper(s) on the bus card (refer to the next page); b) at DOS prompt do command CALIB Port# Irq#. Once this is done, the driver, MTOUCH.COM, has changed its internal parameters to the Port# & Irq#.


    For ELODEV

    1. Copy two (2) programs, HTI2ELO.COM & HTICALIB.EXE, into [your-path]\ directory. The driver HTI2ELO replaces ELODEV for interfacing to HTI (Hi-Tech Instruments) touch screen hardware. At DOS prompt, type up HTI2ELO 5,0 -i60 command to load up the driver. Where 5 is for IRQ5, 0 is for PORT0 and -i60 is for setting up Interrupt 60. To remove the driver is to type up command HTI2ELO 5,0 -i60 -x at DOS prompt.

    2. Run calibration program. At DOS prompt, type up HTICALIB 0 5 command. Where 0 is for PORT0 and 5 is for IRQ5.


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  2. RMS-Touch Installation
    We provide a floppy diskette packed with our touch monitor. The diskette contains the following files:

        HTISETUP.BAT - a setup batch which copies all files into \RMS directory

  3.     RMSSETUP.BAT - modified from original RMSSETUP.BAT to have Hi-Tech Touch Monitor selection
        HTI2ELO.COM - an emulation driver to replace ELODEV driver
        HTICALIB.EXE - calibration utility
        POS0.HTI - if Hi-Tech is selected, then this file is copied to POS0.BAT by RMSSETUP.BAT
        POS000.HTI - if Hi-Tech is selected, then this file is copied to POS000.INI by RMSSETUP.BAT
    The installation and operational procedures of RMS are almost the same as before. Steps are shown below:
    1. Install RMS files into C:\RMS

    2. From A: drive, insert Hi-Tech diskette, do HTISETUP C:\RMS command.

    3. Form C:\RMS directory, do RMSSETUP command.

    4. From C:\RMS directory, do POS0 command.


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  4. Installation of Win95 - New driver for the serial controller
    This document is to install a new Windows '95 version 8.67 driver for the Bridge's serial controller. Boot up the system to Windows 95. If you did not have the older 8.66 version was installed in your system, then skip to item 6.
    1. If the mouse is not working now, then use hot key to perform the tasks: [Alt][TAB] to select among the windows; [arrow key] to select ICON, then [Enter] to invoke the ICON "BT Setup Version 8.66". A "BT setup" menu should be pop-up now.

    2. At "BT setup" menu, use [Alt][A] to select the item "Action Mode". Use [TAB] and [arrow key] to select a different mode from the current one. [Alt][O] for executing OK button. The system says "Initializing .....", and the mouse should be working now. If still not, make sure that the "Mouse Type" item shows "MS mouse 2 button", and this should match up your mouse. Use mouse to click on Exit.
    3. Use mouse to click and use [Delete] to delete ICON "BT Setup Version 8.66" and ICON "BT Driver Installation".

    4. If you would like to purge all old files, then you can delete the entire directory of C:\BTWIN866

    5. At this point, you might be still able to use mouse to perform the steps listed below. However, we intend to document of how to use keyboard to proceed the setup.

    6. Put the new diskette, "Driver for Windows 95 ver. 8.67", into floppy drive A. Use [Ctrl][Esc] to pop up the Start menu, then use [arrow key] to invoke: Run -> Open a:\setup.exe -> OK

    7. After the TOUCH SCREEN window and the ICON "BT Setup Version 8.67" are created, use [Ctrl][Esc] to pop up the Start menu again, then use [arrow key] to invoke: Settings -> Control Panel -> Mouse -> General -> Change -> Have Disk -> Copy manufacturer's files from C:\BT95W867 -> OK -> OK -> Name: BRIDGE TOUCH SCREEN - Serial Mouse Driver (8.67) -> Close -> Do you want to restart your computer now? -> Yes

    8. After the system re-booted, the mouse might be still not working yet. Use keyboard to invoke the ICON "BT Setup Version 8.67". At "BT setup" pop-up menu, use [Alt][M] to invoke "Mouse Type" item. Use [TAB] and [arrow key] to select "MS mouse 2 button" item, this needs to match up your mouse. Then [Alt][O] to invoke OK button. After system says "Initializing ....", your mouse should work now. If you had problem to get to the ICON you want, hold down the [Alt] key and use [TAB] to select among the windows; use [arrow key] to select ICON, then hit [Enter] to invoke the ICON.

    9. If you like, you can do Calibration, Touch Mode, etc., to experience how the touch screen is to response. Finally, touch (or click by mouse) Exit button from "BT setup" menu to conclude the setup.


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  5. Difficulties installing DOS drivers, the install.exe is corrupted.
    The "INSTALL.EX$" is nothing to do with "INSTALL.exe". .EX$ is not executable; it it part of setup.exe utility. Please follow the "INSTALLATION OF TOUCH DRIVERS" For DOS procedure.

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  6. The touch screen does not react to touch.
    Please verify the following things:
    1. Did you have "CD WINDOWS" command in the last line of AUTOEXEC.BAT file?
    2. If your PC had sound card, or network card, the IRQ 5 might be used by them; please do Start Menu -> Settings -> Control Panel -> System -> Device Manager -> (+)sound -> Sound Blaster -> Properties -> Resources -> (unckeck) Use Automatic Settings -> (high light)Interrupt Request -> Change Setting... -> Value [10] -> OK ... Do simular thing to the network card resources to interrupt Value [11].
    3. Reboot system
    4. The default card settings are IRQ 5, JP1 1-2 and JP2 1-2. You could run a simple DOS test to verify there should not have any hardware conflict. At DOS prompt, run a program from our diskette by typing KTOUCH 5 [enter]. By touching the screen, you ought to see a rectangular cursor following your touching.
    5. Please do not change the default settings from the card if possible. If you really want to change, the IRQ content in the data file CALIB.DAT also need to be changed. Please read README.TXT file for details. We strongly recommand not to change the defaults.
    6. Please give me a little more details about what you have done, then, I may be better to help you.



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  7. Neither the mouse or the touch screen works after installation.
    To verify your touch screen hardware:
    1. Read the menu-book for the connection, and make sure: the green light is on, the DB9 Female cable is connected to the COM1 (or COM2) port, and the RJ11 (phone jack) is pluged into the touch monitor.
    2. You could verify these hardware connectivity in DOS by using "For Windows 3.1 ver 8.67" diskette. Shut down your Win95 and restart your computer in DOS mode. NOT DOS shell. At DOS prompt, in drive A:, do "install A: C:". A BT directory will be generated. Go to the BT dir, do "M.BAT" to setup DOS driver. Do "S.BAT" to run DOS calibration. At DOS prompt, do "EDIT JUNK." of using DOS editor to verify touch=mouse emulation. If these all work, then your touch monitor hardware is good.
    3. No do EXIT from DOS to restart into Win95. If still having problem, then possible: You have network application is running; that app re-configures the COM port charactors.



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