THIN ELECTRONIC DATA INPUT DEVICE

Abstract: Conventional computer keyboards if made to a comfortable size for operation, are large and thick, with limited (pocket) portability, expandability, versatility and variety. Numerous moving keys and springs result in reduced reliability (stuck keys), some noise, and vulnerability to drink spills, fall or external shock. This invention in a Thin Electronic Data Input Device which we call "TEDID" for short, comprising an electronic data entry circuitry printed on a thin board, such that finger touching each symbol node on it will send a signal (unique to that symbol) to the receiving computer. The TEDID, being thin can be subdivided into "Sub-TEDIDs" connected by Flexible joints and/or flexible electronic cables, such that the assembly can be folded, some Sub-TEDIDs can be removed or stacked. The TEDID can be of flexible material and be rolled or folded, hence pocket size for transport yet full size when unfolded for operation. No moving parts increases resilience and reliability and washability. One of many of the uses of TEDID is to considerably reduce the thickness of portable computers (such as notebooks). Another use is to manufacture pocket computers and printers replacing tiny, slow, uncomfortable keyboards with large but foldable TEDID.

Description: Thin Electronic Data Input Device The present invention relates to a device for data entry into data processing machines, in particular computers, a task which is currently performed by conventional keyboard. Prior art (existing keyboards or their conventional variations) comprise of an electronic circuit board, underneath a set of Alphanumeric keys kept apart from the circuit board by a spring or similar device, such that pressing a key down will cause the electronic contact that will eventually translate into input data One disadvantage of Prior art is that such keyboards have to accommodate the board plus the separating device (spring) plus the keys, and therefore are relatively thick. It is not easy to substantially reduce thickness. Another disadvantage of Prior art is that to reduce its width and length, each key should become smaller and distances between keys should be reduced. Therefore shrinking it to small or pocket size dimensions sacrifices convenience and speed of operation, especially for operators with large fingers and hands. In fact beyond some point, it becomes impossible to operate. Another disadvantage of Prior art is that the board, the keys, the separating devices must be housed in a box and preferably have a lid protecting the keys, resulting in heavier weight. Another disadvantage of Prior Art is that keys can be stuck to adjacent keys and either have restricted movement or that pressing a key can cause adjacent keys to be pressed too. Another disadvantage of the prior art is that , spilled drinks or even solid particles can penetrate from the gap between keys to the board circuit and disrupt the circuiting and/or glue the keys together. Another disadvantage of Prior art is that the spring mechanism underneath each key can become less responsive and lose its rebounding property. Another disadvantage of Prior art is its noise of operation, such that for example using it in a quiet library, or in a shared bedroom is not desirable. Another disadvantage of Prior art is that it is not easy to clean the keys, especially visible faces on and between keys, that do get dirty, especially in dirty environment. Another disadvantage of Prior art is that because the keys have to be light and easy to press, they should not be firm and bulky and therefore are vulnerable to breakage, such that a keyboard can't be trusted to withstand pressures causing breakage. In other words, for transportation and use, it better be treated as "fragile", which is not very convenient considering their extensive daily use. Another disadvantage of Prior art is that time required for data entry is not only the time required for finger to touch the key but the time for each key to travel the distance to the circuit board , plus often the time for the operator to feel the key's rebound before next key is pressed, reducing speed. Some of the above disadvantages do not apply to a special kind of keyboard currently used in fast food order entry and on some hand held calculators, where the circuit board is separated from the keys by a bubble gap closed by pressing the keys surface, such surface being of material with spring like properties that keeps key surface and circuit board separate (unless pressure is applied to the key surface). The problem with this kind is that the pressure needed to cause contact between keys and the circuit board is relatively "high" making data entry very slow and laborious . There are other methods of data entry that when advanced and perfected may reduce the need for keyboards in the future, such as "voice recognition" and "handwriting recognition". Both above methods are by nature much slower than "finger operated data entry" as it is not possible to speak clearly or hand-write legibly as fast as moderate speeds attained by finger typing. Besides, such mechanisms cannot be used by people with impaired speaking or writing. It is desirable to have a finger operated data entry device that has the following properties: -It can be operated by touching, usually by finger, so that not only higher speeds attained by finger touch inputting can be attained, (as compared to voice or handwritten entry) but can be used by people with speech or writing impairment; -Each letter, figure, or other unit of data, hereafter called "symbol" can be represented by a large enough touch surface or "node" for easy operation; -All the symbols can be laid-out on a surface large enough for easy operation; -Yet the device can be small, thus iight and sturdy.pocket portable; -It does not have any or many of the disadvantages of the Prior art listed above . The present invention consists of a "Thin Electronic Data Input Device" ,that throughout this disclosure we abbreviate to "TEDID",some version of which may be "Foldable.Unfoldable" ,some versions capable of being "Rolled" up, some versions capable of being disintegrated into smaller Sub TEDIDs,and even some versions having one or more of such properties. In one version of the invention, it comprises a "Thin board ",made of a material on which an electronic circuit can be imposed or printed , on which a data entry electronic circuit board (simila to a conventional keyboard electronic circuit ) is imposed , placed or printed.The electronic circuit will have "symbol nodes" ,being locations on the circuit that when touched by finger,send a signal, unique to that symbol node to the receiving processor or a computer. One standard way of achieving this is that the circuit is broken at symbol nodes by a narrow "Gap" such that if the Gap is closed at that location, it will signal entry of particular symbol (letter, figure, etc.) to the receiver of data (usually but not necessarily a computer).Gap closure at "symbol nodes" are caused by the operators "finger", touching the "Gap" and the circuit on both sides of th Gap, that would bridge the Gap af'Symbol node" . As the human body conducts some electricity, bridging the "Gap" by finger will cause some electronic flow which signals the particular "symbol node" whose "Gap" has been touched. In essence, the operators finger does what the pressed key i a conventional keyboard does. In circumstances, where the human finger does not provide sufficient conductivity to connect the Symbol node Gap, special conductive "finger cup"s can be worn by the operator. In another version of the invention, the TEDID can be in one piece or comprising of two or more "Sub TEDIDs" connected together by "Flexible Joints" along the "longitudinal" sides between Sub TEDIDs, such that the "TEDID Assembly" may fold "longitudinally". Similarly the Board can comprise of two or more Sub TEDIDs that may fold on each other "Latitudinally". The TEDID ma even be comprising of Sub TEDIDs that can fold longitudinally and latitudinally. One typical versio may comprise of Sub TEDIDs folding longitudinally within each "Row" and latitudinally along the side of extreme Sub TEDID in each "Row" . The electronic circuits will continue from Sub TEDID to Sub TEDID via "flexible cables" connected between preferably same sides of Sub TEDIDs to which Flexible Joints are connected,or even serving as flexible joints. All this gives the effect of folding the TEDID assembly to smaller width and length to fit into pocket or for increased versatility .which can be unfolded for operation . One typical application is a version with full size Symbol set TEDID, comprising of equal Sub TEDIDs, in 3 rows of 4 Sub TEDIDs in each row. The top and bottom rows each folding 4 fold, onto the extreme TEDID , and then the extreme Sub TEDIDs of each row folding latitudinally along the joint side, hence providing a 12 fold which easily fits into pocket. The electronic circuitry may be covered by a thin layer of protective film, leaving only the symbol nodes exposed. The invention is better illustrated with reference to drawings in which: Figure 1 is a perspective view of an embodiment of a simple one piece TEDID . Figure 2 is a foldable TEDID as an assembly of 12 Sub TEDIDs Referring to the drawings, a simple TEDID 10 comprises of a thin board 12 on which electronic data entry circuitry 14 is printed, and covered by a thin non-electro conducting protecting layer 16, which layer have openings 18, 20 exposing Symbol nodes 22,24 and the Gaps 26,28. When a finger is placed over both halves of the Symbol node bridging the Gap, electronic current flows through the circuitry which signals the touched symbol, eventually transmitted to the computer or other receiving device via connection cord 30 and plug 32. Figure 2 illustrates a typical assembly of twelve Sub TEDIDs making the TEDID 34, each one of Sub TEDIDs 36,38,40,42,44,46,48,50,52,54,56,58 connected to adjacent Sub TEDID orSub TEDIDs by Flexible Joints 60,62,64,66,68,70,72,74,76,78,80,82,84,86,88, 90, 92 ,94, 126, 128, 130, 132. Each Sub TEDID electronic circuitry continues to the adjacent circuitry via "flexible cable" sets 96,98, 100, 102, 104,106,108, 1 10, 112, 122, 124. The thicker elements of the electric circuit are all housed in the external "detachable chip"! 14 which is connected to the rest of the assembly via the deplugable set of flexible cables 1 16 , and the TEDID assembly's electronic circuitry is connectable to the computer or other receiving device via cable setl 18 and plug 120. In this typical TEDID, the preferred folding sequence will be that 58 folds on 56 face to face, the ,while maintaining 58 and 56 faces attached, back of 56 folds onto back of 54, then while the 58,56,54 are kept in folded form, face of 54 folds onto face of 52, then 52 and 44 fold back to back,then 44 and 46 fold face to face,then46 and 48 fold back to back, then 48 and 50 fold face to face, then 50 and 42 fold back to back,then 42 and 40 folding face to face,then 40 and 38 folding back to back, then 38 and 36 folding face to face. Some of the "flexible joints" may be "detachable", and corresponding "flexible cables" being " depluggable" , such that some of the Sub TEDIDs may be detached from the assembly, hence for many occasions only the most essential Sub TEDIDs are carried,or that they can be carried stacke on one another for further versatility. Sub TEDIDs may be of different sizes, but should be such to enable folding if so desired. The size and shape of each Sub TEDID and their number is a matter of design and application . RECTIFIED SHEET (RULE 91) n In another version of the invension The TEDID whether in one piece or an assembly of Sub TEDID(s) may be made of "thin pressure sensitive electronic screen" also called "touchscreen" currently in use for a variety of applications. Such flat screens convert pressure(usually by finger) into variation in electric current or voltage that signals a "Symbol", Such screens can also be programmed to register desired pressure so that even a light touch can be registered or that touche less than some pressure level are ignored. They can be programmed to signal different symbols whe different parts of the screen is touched. A map of which location to touch for each symbol can be electronically imposed on the screen. Such electronic map can be reprogrammed for various sets of symbols. For example it can be programmed to map English alphabet on the screen for one application and then reprogrammed to map Greek alphabet on the screen. In short, conversion of th touch screen TEDID mapping from one set of symbols to another set of symbols can be achieved b internal programming. In our version of the invention that does not use "pressure sensitive screen technology", the TEDID can represent different symbol sets, for example one particular key can be L in English and Λ in Greek, but only a limited number of such different symbols can be demonstrated on or near the ke for operator to know which key represents what symbol in different symbol sets. But in pressure sensitive screen technology can be utilized to change the face of each "symbol node" to show exactl what symbol it correctly represents. In another version of the inventionJhe TEDID may be made of thin flexible material,such as rubber, on which the electronic circuit, made of flexible material such as flexible wiring or electro- conducting paint printed or imposed. Electronic circuit may be covered by a thin layer of flexible non-conducting material, leaving only the symbol nodes exposed. This kind of TEDID can be "Folded" or "Rolled", for transport and storage versatility and "Shaped" for further versatility. Also this flexible TEDID can be in more than one Sub TEDIDs that can be attached or detachable, as explained in the rigid version. It would therefore be possible to have TEDID with many number of symbols that can be added on by just adding extra Sub TEDIDs, several such Sub TEDIDs can fold and roll or detach for transport. The rigid version of the TEDDD.may be flat, concave, convex, or have any other shape that may suit some ergonomic or other purpose, but it should be remembered that some shapes and designs may reduce folding freedom. The Flexible Joints may have limited opening angle such that when fully opened, theSub TEDIDs attached by such Flexible Joint will form the desired surface, such as a plane surface, even if not supported on a flat desk, and even if the assembly of several Sub TEDIDs forming the TEDID should be kept at an angle to the underlying surface or desk for ease of operation. The TEDID may have folding or detachable supporting means such as legs to hold it at an angle to the underlying surface (or desk) for easier operation. There may be "Rods" passing through grooves or loops on the sides or on the back of "Sub TEDI to keep the TEDID assembly in the desired .usually flat shape or at desired angle. There may be removable or fixed "Clasps" holding two adjacent Sub TEDIDs at a straight or desi angle to one another, even if the assembly of Sub TEDIDs is not supported by the underlying surface or desk, or it is desirable to keep the assembly at angle to the desk for ease of operation. Flexible Joints may be made of rigid material (such as most "hinges"), or made of flexible rubber like material , shaped for example like a "band" adhered or glued to the Sub TEDIDs, bridging the adjacent sides. However, such flexible bands may not easily hold Sub TEDIDs at straight or desir angles to one another, especially when the TEDID assembly is held away from or at an angle to th supporting surface. To * further reduce the overall thickness of the single piece TEDID, one method is to design the electronic circuit such that the thicker elements of the circuit are all in one or more corners or clos to one or more sides, preferably serving some secondary function. For example, the housing of su thicker elements may serve to keep the TEDID at an angle to the desk for easier operation. Alternatively thicker elements may be placed where most suitable to what the TEDID is attached such as a portable computer. For multi-piece TEDIDs, such thicker elements of the circuit may be placed all preferably on one but otherwise more of the Sub TEDIDs such that as many Sub TEDI as possible are as thin as possible. For many applications, the extra thickness of thicker Sub TEDIDs would better be rising above the operating face so that the underneath can rest flat on the working surface or desk, but various applications would call for different formations. An alternative but similar way to reduce thickness of the TEDID is that, the electronic circuit is designed such that much or all of "bulkier" elements of the circuit are grouped together in one or more relatively thicker "Chips", electronically connected to the rest of the TEDID via flexible cables,preferably by one or more detachable plugs. To reduce weight and costs and complexity, the flexible electronic cables connecting circuits between Sub TEDIDs can be made such to serve also as the flexible joints. To provide more coherence between Sub TEDIDs, the underneath surface of all theSub TEDIDs may be adhered or stuck on a sheet made of flexible material such as rubber. Another alternative is that the operating surface of all Sub TEDIDs are adhered or stuck to a sheet of flexible material, maintaining sufficient distance between adjacent Sub TEDIDs to allow folding, such sheet being open (if necessary) over symbol nodes In the versions using pressure sensitive screens, the said overlaying sheet need not have openings at symbol nodes but to be able to transmit pressure to the symbol nodes and be such that symbol nodes are visible by the operator. Such thin flexible layer, whether at underneath or face surfaces will provide extra protection and coherence between Sub TEDIDs but would add slightly to the overall thickness and weight. Some of the advantages of this invention are: -It solves each one of the explained disadvantages of Prior art to a high degree, often completely. -It can be lighter, smaller, portable, foldable, pocket size for transport, yet full size for use. -It is cheaper to produce as keys, springs and housing are not necessary. -It is cheaper to store before selling and courier when sold or for repair. Some uses of this invention are: -Thinner and lighter portable computer, when conventional keyboards are replaced by a one piece TEDID version of this invention. -Pocket portable computers when foldable versions of this invention is used in conjunction with pocket size displays, printers , memory chips and processing chips. It will be appreciated that numerous modifications and variations of the illustrated embodiments and versions may be employed without departing from the inventive concept herein.

Claims: CLAIMS; The embodiments of the invention in which a exclusive property or privilege is claimed are defined as follows: 1. A Thin Electronic Data Input Device comprising: a thin, rigid board, as supporting base for electronic data input circuitry ; an electronic data input circuit made of thin components, thinly spread over and firmly attached to, or printed on the thin rigid board, said circuit incoφorating desired number of thin visible "Symbol nodes", having the property of closing the circuit or changing the electronic current, when touched directly by operator's finger (without the need for pressing keys), said circuit having the design to output a unique signal for each different symbol node touched; an output plug for connecting into and transmitting the electronic signals initiated by touching the symbol nodes into intended Data Receiving Device such as a computer; an "optional" protective paint or layer with openings to expose the symbol nodes;and "optional" means such as legs, preferably foldable or detachable ,to keep the Device at desired angle to the operating surface or desk. 2. A Thin Electronic Data Input Device as claimed in 1 whereby the Symbol nodes within the electronic circuit comprise of a thin flat Cathode and a thin flat Anode separated by a Gap such that a finger touch can bridge the Gap and cause a flow of electronic current. 3. A Thin Electronic Data Input Device as claimed in 1 whereby some or all of the Symbol nodes within the electronic circuit comprise of a "thin pressure sensitive electronic screen" that cause a change in electronic current or voltage when pressed by usually soft f nger touching. 4. A Thin Electronic Data Jnput Device comprising: a "thin rigid electronic pressure sensitive screen", having the property of changing the electronic current or voltage along its electronic coordinates that are pressed by touching; an electronic means, such as circuit or chip,for processing said current or voltage changes into signals that are different and unique for various visible symbol nodes defined on the electronic pressure sensitive screen; an output plug for connecting to,and transmitting the electronic signals initiated by touching the symbol nodes into any intended Data Receiving Device such as a computer; "optional" means such as electric circuit or chip, which can be programmed to show different symbol sets, such as English Alphabet Symbols or Greek Alphabet Symbols on the touch sensitive screen as its visible symbol nodes and modify its output signals accordingly;and "optional" means such as legs,prcferably foldable or detachable to keep the Device at desired angle to the operating surface or desk. 5. A Thin Electronic Data Input Device as claimed in 1,2,3,4 as an Assembly of a plurality of separate Sub Thin Electronic Data Input Devices, each Sub Thin Electronic Data Input Device attached to at least one adjacent Sub Thin Electronic Data Input Device by a number of Flexible Joints, such as Hinges, which segment of electronic circuit on each Sub Thin Electronic Data Input Device is connected to the segment of electronic circuit on the adjacent Sub Thin Electronic Data Input Device or Sub Thin Electronic Data Input Devices via flexible electronic cables, which cables may also serve as flexible joints, the electronic circuit of the total assembly functions, electronically the same as the electronic circuit in claim 1, but the assembly can be folded along several common sides of Sub Thin Electronic Data Input Devices. 6. A Thin Electronic Data Input Device as claimed in 5, whereby some or all of the Sub Thin Electronic Data Input Devices can be removed and re-connected, and whereby the electronic circuit design is such that removal of some Sub Thin Electronic Data Input Devices would not jeopardize functionality of remaining Sub Thin Electronic Data Input Devic ). 7. A Thin Electronic Data Input Device as claimed in5, 6 whereby the Sub Thin Electronic Data Input Devices can be fixed at straight or desired angles to adjacent Sub Thin Electronic Data Input Devices.for easier operation or other reason, by use of, suitable means such as "Flexible Joints" between Sub Thin Electronic Data Input Devices that are lockable at desired angles or "Clasps" that keep two or more Sub Thin Electronic Data Input Devices at desired angle or "Rods" that run through two or more Sub Thin Electronic Data Input Devices via holes, grooves or tunnels embodied in such Sub Thin Electronic Data Input Devices. 8. A Thin Electronic Data Input Device as in 5, 6,7whereby the underneath of some or all of the Sub Thin Electronic Data Input Devices are adhered (preferably firmly) on a thin flexible sheet,serving also as flexible joints , allowing folding of the Device along common sides of Sub Thin Electronic Data Input Devices. 9. A Thin Electronic Data Input Device as in 6,7,8,9 whereby the top face of some or all of the Sub Thin Electronic Data Input Devices are adhered,preferably firmly, to a thin flexible sheet, serving also as flexible joints, allowing folding of the Device along common sides of Sub Thin Electronic Data Input Devices, such sheet having opening (for touch sensitive versions) or being transparent and pressure transmitting(for pressure sensitive versions) over the symbol nodes. 10. A Thin Electronic Data Input Device as in 5, 6,7,8,9 whereby the thicker elements of the electronic circuit are, located on preferably one or minimum number of Sub Thin Electronic Data Input Device (preferably the one on which other Sub Thin Electronic Data Input Devices fold), to further reduce the thickness of remaining Sub Thin Electronic Data Input Devices . 1 1. A Thin Electronic Data Input Device as claimed in 1,2,3,4 whereby the thicker elements of the electronic circuit are, by design, located near the side or corners or other location, suitable for operation and cooperation with other devices (such as portable computer), resulting in reduced thickness for the rest of the area of the Device. 12. A Thin Electronic Data Input Device as in 1,2,3,4,5,6,7,8,9,10,11 whereby the "bulkier" elements of the circuit are located on one or more relatively thicker chip(s),separate from but electronically connected to the rest of Device via flexible, preferably detachable cables and pfug(s), hence help to reduce the thickness of the rest of the Device. 13. A Thin Electronic Data Input Device as claimed in 1,2,3,4,5,6,7,8,9,10,11,12 whereby the materials used in its construction are flexible so that the Device may also be rolled up. 14. Electro Conductive Finger Cups worn by the operator of the Thin Electronic Data Input Device for use where human fingers' electronic conductivity is not sufficient .

Inventors: AMIRI AHMAD, AMIRI, AHMAD
Applicants: AMIRI AHMAD, AMIRI, AHMAD
Application year: 1996
Main classification: H01H13
IPC codes: G06F3, H01H13