JPS57168385A - Encoder for manuscript signal - Google Patents

Encoder for manuscript signal

Info

Publication number
JPS57168385A
JPS57168385A JP56053587A JP5358781A JPS57168385A JP S57168385 A JPS57168385 A JP S57168385A JP 56053587 A JP56053587 A JP 56053587A JP 5358781 A JP5358781 A JP 5358781A JP S57168385 A JPS57168385 A JP S57168385A
Authority
JP
Japan
Prior art keywords
signal
signals
difference
coordinates
tablet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56053587A
Other languages
Japanese (ja)
Other versions
JPS6349821B2 (en
Inventor
Taku Arazeki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56053587A priority Critical patent/JPS57168385A/en
Publication of JPS57168385A publication Critical patent/JPS57168385A/en
Publication of JPS6349821B2 publication Critical patent/JPS6349821B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Character Discrimination (AREA)

Abstract

PURPOSE:To reduce the number of bits for coding, without deteriorating the quality of manuscript signals, by obtaining a polar coordinate from the difference of signals of X and Y coordinates and predicted values, through a signal displaying the state of a pen on a tablet. CONSTITUTION:The state of a pen on a tablet is detected at a coordination detecting circuit, and signals X1 and Y1 representing X and Y coordinates and a signal Z1 representing if a stylus is contacted on the tablet are applied to an encoder 40. A control signal is applied to differential circuits 42 and 43 inputting signals X1 and X2 from a control circuit 41 inputting the signal Z1 and the X and Y coordinates are outputted according to the control signal with the difference from the respective predicted value. The information of the coordinates X and Y from a coordinate conversion circuit 44 is converted into an angle and a distance through the outputs of the circuits 42 and 43, and the difference value to the angle and distance is obtained from difference circuits 45 and 46 and the signals X1 and Y1 are applied to an inputted multiplexer 47. Thus, the polar coordinate is obtained from the difference signal at the multiplexer 47 to make encoding easy.
JP56053587A 1981-04-09 1981-04-09 Encoder for manuscript signal Granted JPS57168385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56053587A JPS57168385A (en) 1981-04-09 1981-04-09 Encoder for manuscript signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56053587A JPS57168385A (en) 1981-04-09 1981-04-09 Encoder for manuscript signal

Publications (2)

Publication Number Publication Date
JPS57168385A true JPS57168385A (en) 1982-10-16
JPS6349821B2 JPS6349821B2 (en) 1988-10-05

Family

ID=12946984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56053587A Granted JPS57168385A (en) 1981-04-09 1981-04-09 Encoder for manuscript signal

Country Status (1)

Country Link
JP (1) JPS57168385A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736191A (en) * 1985-08-02 1988-04-05 Karl E. Matzke Touch activated control method and apparatus
EP0816992A1 (en) * 1996-06-24 1998-01-07 Sharp Kabushiki Kaisha Coordinate input apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4736191A (en) * 1985-08-02 1988-04-05 Karl E. Matzke Touch activated control method and apparatus
EP0816992A1 (en) * 1996-06-24 1998-01-07 Sharp Kabushiki Kaisha Coordinate input apparatus
US5861874A (en) * 1996-06-24 1999-01-19 Sharp Kabushiki Kaisha Coordinate input apparatus

Also Published As

Publication number Publication date
JPS6349821B2 (en) 1988-10-05

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