CA1108764A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Processing of information
Assignee: Quest Automation Ltd
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Filing: 1979-05-30
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Granted: 1981-09-08
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Expires: 1999-05-30
Abstract
Abstract ABSTRACT OF THE DISCLOSURE A handwriting recognition device comprises a trans-ducer surface responsive to a pen positioned thereon for representing the coordinate position of the pen as an electrical signal, and data processing means for recognizing a handwriting effected with the pen, the data processing means including a microprocessor based control controlling a read/write memory, a non-volatile read-only memory storing a handwriting recognition routine to store recognized handwriting in the read/write memory, and an interface communicating to a host computer system a representation of the recognized character. A visual display may be provided coupled to a display interface and an input information for receiving veri-fied recognized handwriting comunicated from the host computer. system. The read/write memory has a first storage location coupled to the transducer storing a representation of signals from the transducer, a second storage location coupled to the interface and storing a representation of recognized handwriting, and a third storage location coupled to the display interface and a storing an image of the display.
Inventors
- 👤 Derek Buckle
- 👤 Timothy D. Strand
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-10-29 16:43
CPC Classifications
G; G06; G06V; G06V10/00; G06V10/10; G06V10/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
130 words
A handwriting character recognition device com-prising a single housing containing transducer means having a surface, responsive to a pen or stylus positioned thereon, for producing the coordinate position of the pen or stylus in terms of an electrical signal; said single housing also containing data processing means comprising: a read/write memory in integrated circuit form, a further memory in integrated circuit form for stor-ing a handwriting recognition routine, control means including a processing means arranged to interface with or to control said transducer means and to control said read/write memory and said further memory whereby electrical signals from said transducer means are interpreted by said routine and recognized handwriting signals are stored in said read/write memory, and an interface for communicating with an external system representations of said recognized handwriting.
Claim 2
Dependent Claim
130 words
A handwriting character recognition device com-prising a single housing containing transducer means having a surface, responsive to a pen or stylus positioned thereon, for producing the coordinate position of the pen or stylus in terms of an electrical signal; said single housing also containing data processing means comprising: a read/write memory in integrated circuit form, a further memory in integrated circuit form for stor-ing a handwriting recognition routine, control means including a processing means arranged to interface with or to control said transducer means and to control said read/write memory and said further memory whereby electrical signals from said transducer means are interpreted by said routine and recognized handwriting signals are stored in said read/write memory, and an interface for communicating with an external system representations of said recognized handwriting.
Claim 3
Dependent Claim
41 words
A device according to claim 1, including an input interface for receiving information communicated from said ex-ternal system in response to said recognized handwriting, and a display interface for providing a display representation of the information received from said external system.
Claim 4
Dependent Claim
20 words
A device according to claim 2, wherein said in-put interface and said display interface are housed in a single housing.
Claim 5
Dependent Claim
53 words
A device according to claim 1, wherein the read/ write memory has a first storage location coupled to said trans-ducer for storing a representation of digital coordinate position signals representing a handwritten character, and a second stor-age location coupled to said interface for storing a representat-ion of a character recognized by said routine.
Claim 6
Dependent Claim
54 words
A display as claimed in claim 2, wherein said read/write memory has a storage location coupled to said display interface and storing an image in digital form of the display required, said external system being arranged to update said image at intervals and said display interface being arranged to sample said image at intervals.
Claim 7
Dependent Claim
40 words
A device as claimed in claim 4, wherein said second storage location is arranged to store a two portion data word, one portion representing said recognized character and the other por-tion representing the position of said character on said surface.
Claim 8
Dependent Claim
40 words
A device as claimed in claim 1, wherein said hand-writing recognition routine is a character recognition routine and is operative to examine as an iterative process, preselected parameters of signals from said transducer means in order to recognize a character.
Claim 9
Dependent Claim
92 words
A device as claimed in claim 1, wherein said processing means is arranged to carry out a voltage normalization for normalizing the voltage sensed by said transducer, includ-ing means for determining at intervals the voltages Vedge 1 and Vedge 2 existing at the edges of the surface and a normzalized voltage Vxn such that Vxn = (Vx - Vedge 2) / (Vedge 1 - Vedge 2) K, K being a constant having dimension of voltage and Vx being the voltage detected at the position of said pen or stylus on said pad.
Claim 10
Dependent Claim
101 words
A device according to claim 1, including means for determining the alignment and registration of a form, pro-vided with a registration character, placed on the surface of said transducer means, said last-named means comprising a data processing circuit arranged to receive data corresponding to signals generated by the overprinting of said registration char-acter by a user, and operative to compare said data with pre-determined registration character position data, and to compute correction factors to be applied to other characters printed thereafter on the form by the user if the form is not positioned in correct alignment and registration on the surface.
References Cited (Backward Citations)
No citation records indexed.
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