Patents
Sitemap › H03 - Basic electronic circuitry › H03M - Coding, decoding or code conversion, in general › H03M 11 - Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
Patents for H03M 11 - Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys (4,545)
10/1991
10/22/1991US5059975 Control signal generation circuit for wireless remote control signal transmitter
10/22/1991US5059974 Method for determining phantom switch condition
10/15/1991US5058046 Cursor selected keyboard keys displayed on the computer screen for entering alphanumeric characters and instructions, particularly for creating computer aided design and drafting patterns
10/15/1991US5057836 Data input apparatus having a microcomputer
10/15/1991US5057699 Switch interface for determining position of a plurality of switches using a determined time
10/09/1991EP0450129A1 Keyboard with definable keys
10/08/1991US5056059 Medical monitoring system interface
09/1991
09/13/1991CA2038065A1 Alphanumeric keypad for data entry
08/1991
08/28/1991CN1054155A Code conversion and recovery system of household radio recorder
08/21/1991EP0220322B1 Key input device for cai system
08/21/1991CN1053960A Transformation device for chinese continous characters
08/14/1991EP0441129A1 Keyboard sensing circuit
07/1991
07/30/1991US5036320 Smart multiple switch scanner, single wire bus multiplex system therefor
07/30/1991CA1287164C Method for correcting television signals
07/30/1991CA1287117C Control device for cooking apparatus
07/25/1991DE4001269A1 Circuit interrogating keyboard with line and column coupling keys - has keyboard divided into two key groups, interrogated by pulses of opposite polarities
07/24/1991CN1013314B Computers system for processing "machine expressions" which are approximate to mathematical formulas
07/23/1991US5034884 System providing key scan key address extraction and bitwise signal transmission between input unit and signal processing unit in parallel
07/09/1991CA1286018C Keyboard crosspoint encoder having pseudo-n-key rollover
06/1991
06/13/1991WO1991008533A1 Terminal, data processor, switching unit, interface, and keyboard the latter three connected to the former two
06/04/1991US5021984 Ticket issuing machines
05/1991
05/30/1991WO1991007826A1 Computer control system
05/15/1991EP0427364A2 An encoding circuit for a keyboard
05/15/1991EP0427011A2 Circuit for determining the state of operation of function keys
05/15/1991EP0426945A2 Input device for computer
05/07/1991US5013874 Apparatus for recording and verifying handwriting, in particular signatures
05/02/1991WO1991006154A1 A data processing system input device
04/1991
04/30/1991US5011414 Key-input apparatus or CAI system
04/16/1991US5008847 Cursor selected keyboard keys displayed on the computer screen for entering alphanumeric characters and instructions, particularly for creating computer aided design and drafting patterns
04/16/1991CA1283217C Keyboard enhancer
04/09/1991US5007015 Portable compact device
03/1991
03/26/1991US5003505 Touchscreen/keyboard scanner
03/26/1991US5003503 Comprehensive computer data control entries from very few keys operable in a fast touch type mode
03/21/1991WO1991003782A1 One-handed keyboard
03/20/1991EP0417362A1 Data/facsimile telephone subset apparatus incorporating electrophoretic display
03/12/1991US4999795 Portable keyboard operated alpha computer system with few keys and visual keystroke instructions
02/1991
02/19/1991US4994992 Contoured touch type data processing keyboard
02/19/1991US4993808 Directed optical signaling
02/13/1991EP0412308A2 Electronic calculator with softkey function display
01/1991
01/30/1991EP0410640A2 Configurable keyboard
01/30/1991EP0410418A2 Input device for computer and method for input interrupt
01/29/1991US4988997 Detection of erroneous keystrokes
01/27/1991CA2022307A1 Computer input device with automatic key input and storage
01/23/1991EP0408765A1 Matrix controller
01/09/1991EP0406486A1 Control system for controlling consumer apparatus, in particular audio and/or video apparatus and consumer apparatus for use in such control system
12/1990
12/31/1990WO1991000523A1 Portable low power computer
12/18/1990US4979147 Electronic device with key switch
10/1990
10/31/1990EP0395469A2 Portable microcomputer
10/31/1990EP0395141A1 Electronic telephone set
10/31/1990EP0394614A2 Advanced user interface
10/14/1990CA2014594A1 Portable microcomputer
10/10/1990CN2063725U Indication key arrangement for keyboard
09/1990
09/27/1990DE3909074A1 Frequency-phase modulation generation - using signal to pulse period converter, electronic relay, and pulse period uninterrupted transmission
09/25/1990US4959721 Remote control system with menu driven function selection
09/18/1990USRE33337 Stenographic translation system
09/11/1990CA1274019A1 Stenographic translation system
08/1990
08/21/1990US4951033 Input device of character data
08/09/1990WO1990009000A1 Execution sequencing
08/09/1990WO1990008998A1 Matrix controller
08/01/1990EP0380188A2 Multiplex system
07/1990
07/26/1990DE3904702C1 Keyboard with definable keys
06/1990
06/28/1990WO1990007149A1 Keyboard express typing system
06/27/1990EP0375546A1 Method for distorting the key identification of an uncoded keyboard, and circuit for carrying out this method
06/26/1990US4937778 System for selectively modifying codes generated by a touch type keyboard upon detecting of predetermined sequence of make codes and break codes
06/21/1990CA2006163A1 Keyboard express typing system
06/20/1990EP0373319A2 Method and apparatus for selecting key action
06/05/1990US4931957 Image information processing apparatus
05/1990
05/29/1990US4929944 Key input apparatus
05/16/1990EP0368520A2 Data entry keyboard apparatus
05/15/1990US4926173 Data entry keyboard apparatus
05/09/1990EP0367626A2 Data entry and control arrangement, E.G.,for an appliance
05/09/1990EP0163690B1 Color and positionally coded permutative one-handed keyboard
05/08/1990US4924431 Keyboard located indicia for instructing a multi-mode programmable computer having alphanumeric capabilities from a few keyboard keys
05/08/1990US4924075 Smart IC card
05/02/1990EP0366132A2 Multifunction operating apparatus
05/01/1990US4922248 Key output method for keyboards
05/01/1990US4922063 Electric data switch that selects data by moving along tracks of electrodes
04/1990
04/26/1990DE3933966A1 Keyboard unit for remote controller - can be incremented through 90 deg. rotations to increase number of functions
04/26/1990DE3835617A1 Method for generating a frequency modulation
04/24/1990US4920514 Operational information display system
04/24/1990US4920253 Control device for a cooking apparatus which controls a plurality of functions using a single resistance element
04/17/1990US4918721 Push button phone capable of sending to the telephone line alphabetical characters
04/17/1990US4918634 Key input apparatus
04/17/1990US4918445 Scanning, row-column type keyboard
04/17/1990US4918444 Key-depression data input device
04/04/1990EP0361533A2 A data processing system input device
03/1990
03/28/1990EP0360414A1 Keyboard
03/27/1990US4912462 Letter input device for electronic word retrieval device
03/22/1990WO1990002992A1 Symbol definition apparatus
03/21/1990EP0359669A2 A detecting apparatus for detecting input operation in a switching matrix
03/21/1990EP0359350A1 Methods and apparatus for determining phasntom switch condition
03/20/1990US4910697 Programmable computer with alphanumeric capabilities having few keyboard keys
03/07/1990EP0356459A1 Improvements in digital computers
03/07/1990CN1040294A Remote-control system
03/06/1990US4906993 Keyboard scanner apparatus and method
02/1990
02/28/1990EP0355458A2 Method and apparatus for selecting items of a menu
02/28/1990EP0355172A1 Remote control system
02/20/1990US4902878 Data entry and control arrangement for an appliance
01/1990
01/30/1990US4897651 Key with selective symbol display and keyboard using such key
01/30/1990US4897649 Keyboard for data entry on control purposes
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