A zero or greater value for this flag enables procedure reports otherwise they are disabled. The button states are then modified to reflect the release of buttons since few digitizers report this information directly. Command packets are transmitted from the host processor to the Interface and contain both commands and arguments. Prolog, Region and Stored Procedure definitions, and an Epilog. The processing loop begins with the receipt of a packet word which is first checked for the presence of the phasing bit in the most-significant bit. S Status bit bit 14 which is set for a response packet.
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The BIU 32 is responsible for decoding the address and control signals from the host processor and channels data from the PIO 30 onto or off of the host data bus These commands will create the desired template menuing system for any digitizer that supports the Interface regardless of digitizer type or host processor system.
Region moved successfully, device not open, tablet not open, region not open, region bounds illegal or insufficient memory to open region. If such procedure recording is enabled, the command and its arguments are copied to the calcmp defined Stored Procedure without execution and the CEU loop terminated. The system reset signal RESETis active-high and must be inverted through hex inverter and converted to an open-collector signal by for use by the circuit. Edge card connectors – provide connection to the host processor system bus.
In this regard, Region 5 will set the rotation to degrees counter-clockwise, Region 2180 the rotation to 90 23108, Region 7 capcomp rotation to degrees and Region 8 to zero degrees, or no rotation at all. This instructs the Command Execution Unit not to execute the commands immediately but store them within the region for later execution.
Each of these regions may possess various attributes which collectively permit the specification of individual coordinate systems or stored sequences of commands.
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Each point on a tablet can be located by means of a unique pair of X and Y coordinates. A method implemented by a first computer program running on a computer for transferring information from a digitizer connected to the computer to a second program running on the computer, the digitizer having a surface adapted to work with a pointer and outputting the position of the pointer on the surface in a coordinate system of the digitizer which coordinate system has a point of origin, comprising:.
Extra arguments to command packets are ignored while insufficient arguments result in packet rejection by the Interface. Region 0or the display region, will be created within the tablet coordinate system bounded by the rectangle, or lower-left and upper-right, respectively. Finally, thirteen regions – are labeled as shaded rectangles with text describing their intended function along with the region’s number in parentheses.
The processing loop begins with the receipt of a packet word which is first checked for the presence of the phasing bit in the most-significant bit. Prior to use, they must be explicitly created by specifying the bounding rectangle in tablet coordinates and may be destroyed explicitly by closing each region or implicitly when closing the tablet.
The hash-table is indexed by using the four most-significant-bits of the X and Y tablet coordinates which collectively narrow the field of search to 1 of possible areas of the tablet in which to begin. User manual Hitachi Software Utilities Version 1. Command packets comprise between two and six words. Listing 2 [Prolog] Finally, assume the user moves the cursor across the digitizer device surface and positions it over Region 9 before releasing button 1.
The tablet area also known as the Active Area is labeled and enclosed within the device area Sets the coordinate system X and Y origin of the region or region group addressed to the third and fourth packets, respectively. This is utilized by connecting the microprocessor’s 38 reset pin to the PIO, the purpose of which is discussed further on.
A method implemented by a first computer program running on a computer for transferring information from a digitizer connected to the computer to a second program running on the computer, the digitizer having a surface adapted to work with a pointer and outputting the position of the pointer on the surface in a coordinate system of the digitizer which coordinate system has an angle of rotation which angle might be zero relative to the digitizer comprising:.
A system including a computer connected to a digitizer which responds to a pointer, comprising:. This region will be activated by the press or release of any button and output X and Y coordinates relative to the last reported position.
M ACROS Macro commands govern the capture, playback and release of region events and are applicable only cxlcomp the tablet layer. Such actions may include moving a visible cursor on the video display attached to the host computer or selecting some action depending on the location and status of one or more buttons. Command packets are transmitted from capcomp host processor to the Interface and contain both commands and arguments. Then, if multiple logical tablets have been assigned to the device, these coordinates are used to determine in which logical tablet the coordinate lies by use of a simple look-up table which then selects the appropriate tablet configuration for further processing.
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Now assume the user moves the cursor over the digitizer surface until it is positioned over one of Region 1 through Region 4 – The cacomp of claim 55 further comprising:. Hard-coded templates necessarily restrict template translation activities to the time of digitizer manufacture or creation of the application program by experienced computer professionals and do not afford the typical computer user the ability to modify or even create their own templates.
The other required signal, 0 WSindicates to the host processor the circuit addressed is capable of zero wait-state operation and is generated by logically ANDing the outputs from positive-OR gates – through positive-AND gate with open-collector output