Portable word-processor

• US 4,442,506 A
• Filed: 06/14/1982
• Issued: 04/10/1984
• Est. Priority Date: 09/18/1980
• Status: Expired due to Fees

• Current Assignee: Microwriter Limited
• Original Assignee: Microwriter Limited
• Inventors: Endfield, Cyril
• Primary Examiner(s): Boudreau, Leo H.
• Application Number:
  US06/388,266
• Time in Patent Office: 666 Days
• Field of Search: 382/1, 382/9, 382/56, 382/57, 382/69, 340/365 R, 340/365 S, 340/152 R, 340/311, 364/200, 364/900, 178/30, 178/17 R, 178/17 C, 178/21, 178/23 R, 178/79, 400/91-94, 35/35 A, 35/38, 179/17
• US Class Current: 341/22
• CPC Class Codes: G06F 3/0235 using chord techniques G06F3/0234 takes precedence
• CPC Class Codes: G06F 40/274 Converting codes to words; Guess-ahead of partial word inputs

Abstract

A portable word-processor comprising the following components; a microprocessor and, connected thereto, a manually operable input chord keyboard having four finger keys and at least one thumb key, the microprocessor being programmed to respond to signals produced by operation of a chord of a combination of up to a maximum of five keys to generate a coded signal representing a particular alpha-numeric character or processing instruction; a display device; output means for connection of the word-processor to a printer; memory means; and an internal power supply connected to power all the aforesaid components; the microprocessor being additionally programmed so as to process the character signals in response to the instruction signals, feed signals to the display device for display of processed characters as an edited text, and to the memory means to store the edited text and print format instruction signals available for transmission through the output means.

Claims

1. A hand portable word-processor which can be held by one of an operator'"'"'s hands to be operated only by the other hand or supported against a surface for operation only by one hand, comprising a manually operable input keyboard having four non-thumb finger keys and a first thumb key, means responsive to operation of the first thumb key and the non-thumb keys for generating different coded character signals each representing a different character in a particular alphabetic system, the number of said coded signals which are generatable by operation of said keys greatly exceeding the number of the keys themselves, a casing supporting said means and said keyboard, a microprocessor forming a part of said means, and a second thumb key forming a part of said keyboard and operable with pre-selected ones of said non-thumb finger keys to supply process instructions to said microprocessor to process said coded character signals, said first and second thumb keys and said non-thumb keys being positioned on said casing for operation with a single hand.

2. A hand portable word-processor, which can be held by one of an operator'"'"'s hands to be operated only by the other hand or supported against a surface to be operated only by one hand, comprising a manually operable input keyboard having four non-thumb finger keys and at least one thumb key, means responsive to operation of said keys for producing coded signals each representing a different character in a particular alphabetic system, and a casing supporting said means and said keyboard, said casing having front and rear oppositely facing ends and a top wall extending between said ends and formed with an exterior intermediate surface which is spaced from said ends and which is sloped rearwardly toward said rear end to face generally forwardly in the direction of said front end, all of the non-thumb keys in said keyboard lying along said intermediate surface and being arranged along an arcuate line at positions where the finger tips of an operator'"'"'s hand overlie said non-thumb keys when the palm of the operator'"'"'s hand is positioned over said top wall at a location which lies rearwardly of said intermediate surface.

3. The hand portable word-processor defined in claim 2 wherein said casing is further formed with an exterior side surface which is sloped to face upwardly and laterally away from said casing, said thumb key being positioned at said side surface at a location where the thumb tip of one of the operator'"'"'s hands overlies said thumb key when the non-thumb finger tips of said one of said hands overlies said non-thumb keys.

4. The hand portable word-processor defined in claim 3 wherein said side surface is positioned rearwardly of said intermediate surface and lies in an envelope which transversely intersects said intermediate surface.

5. The hand portable word-processor defined in any one of the preceding claims 3-4 wherein said intermediate and side surfaces are contained in an envelope having the configuration of a pyramid.

6. The hand portable word-processor defined in claim 3 wherein said casing is formed with a further exterior surface extending along said rear end and sloped in a direction to face upwardly and rearwardly relative to said casing such that said intermediate and further surfaces are oppositely facing and converge toward each other in a direction extending upwardly from said casing, said further surface being spaced rearwardly from said intermediate surface to provide a rest surface for the heel of the operator'"'"'s hand when the non-thumb finger tips of that hand are positioned to overlie said non-thumb keys.

7. The hand portable word-processor defined in claim 6 wherein said side surface extends between said intermediate and further surfaces.

8. The hand portable word-processor defined in any one of the preceding claims 6-7 wherein said intermediate, side and further surfaces lie in an envelope having the configuration of a pyramid.

9. A hand portable word-processor which can be held by one of an operator'"'"'s hands to be operated only by the other hand or supported against a surface for operation only by one hand, comprising an input keyboard having a set of five manually operable finger keys, each of the keys in said set being arranged for operation with a different finger of only one hand, means responsive to operation of said keys for generating different coded electrical outputs each representing a different character in a particular alphabetic system, the number of said coded outputs which are generatable by operation of said keys greatly exceeding the number of the keys themselves, a casing supporting said means and said keyboard, a microprocessor forming a part of said means, and a control key forming a part of said keyboard and operable with pre-selected ones of the keys in said set to supply process instructions to said microprocessor to process said coded outputs, said control key being positioned on said keyboard for operation by a pre-selected one of the fingers on said one hand.