FR2684485A1 - TOUCH KEYBOARD PERFECTED. - Google Patents

Abstract

The present invention relates to an improved keyboard with keys. This keyboard comprises a plurality of keys (2, 3, 4) on each of which are written Roman numerals allowing the composition of an unidentifiable code during or after the actuation of the keys of the keyboard (1). This keypad applies, for example, to unlocking a door lock.

Description

The present invention essentially relates to a keypad

  perfected allowing for example the unlocking of a door lock, or a

  electronic combination of safes.

  It has been proposed for some time to use keypads to control the opening of a door or in other applications. However, the keys on the keyboard are usually written in clear or Arabic numerals to compose a code that can be easily identified and recorded visually by a user.

  no one is on the keyboard user's side.

  It should also be noted that a finger print on the keys allows to find relatively

  easily the order of the digits composing the code.

  Also, the purpose of the present invention is to propose a keyboard with keys that overcomes all the above disadvantages and that can preserve in all circumstances the confidentiality of the code that one

can deal with such a keyboard.

  For this purpose, the subject of the invention is an improved keypad which can be used, for example, for the unlocking of a lock, characterized in that Roman numerals are inscribed on said keys making it possible to compose a non-identifiable code.

  during or after the keys are pressed.

  According to one embodiment of the invention, this keyboard comprises at least three keys respectively bearing the Roman numerals I, V, and X. In addition to the aforementioned keys, the keyboard according to this invention may also comprise other keys such as a separation key, a validation key,

  and a cancel or correction key.

  But other features and benefits of

  the invention will appear better in the description

  Detailed description which follows and refers to the accompanying single drawing, given by way of example only, and showing, in front view, a keypad according to this invention. Referring to the single appended figure, there is shown a keyboard 1 which, according to the exemplary embodiment shown, comprises a row of keys T carrying

each a Roman numeral.

  More specifically, and according to an exemplary embodiment, the keys T are three in number and include a key 2 carrying the Roman numeral I, a key 3 carrying the Roman numeral V, and a key 4 bearing the Roman numeral X These keys could of course, without departing from the scope of the invention, be arranged otherwise than in a row and be in a number

greater than three.

  The keyboard 1 can still include a separation key 5, a validation key 6 and a key

cancellation or correction 7.

  According to the example shown, the key 5 may be located under the row of keys T each having a roman numeral, while the validation 6 and cancellation 7 keys are situated above the row of keys T, but, once again , any other arrangement of the keys of the keyboard can be provided 1

  without departing from the scope of the invention.

  For a better understanding of the invention, it will be explained below how the

  keyboard 1 which has just been described.

  The entry of the code is made from the three keys 2, 3, 4 which make it possible to compose each digit composing the code More precisely, the figure O corresponds to the action of the key 4 (X), the number 1 corresponds to the key 2 (I), the number 2 corresponds to two successive presses on the key 2 (I, I), the number 3 corresponds to three actuations of the key 2, the number 4 corresponds to a press on the key key 2 (I) then key 3 (V) and so on, as can be understood from the following table.

0 X

1 I

2 I, I

3 I, I, I

4 I, V or I, I, I, I

V

6 V, I

7 V, I, I

8 V, I, I, I

9 I, X

  After dialing each digit, that is to say between each digit dialed, the user will operate the separation key 5, it being understood that the correction key 7 will make it possible to resume the entire entry, while the validation key 6 will allow

  to validate the code input sequence.

  Assuming, by way of example, that the code 4567 must be composed, the user will press the keys T, in the following sequence:

I, V / V / V, I / V, I, I.

  The slashes correspond to a press on the separation key 5, it being understood that at the end of the sequence, the user will activate the validation key 6. It has thus been realized according to the invention a keypad allowing the composition of a code which, as it is understood, is not identifiable during or after the operation of the keys of the keyboard on which Roman numerals are inscribed. More specifically, the visual identification and recording of the keys by a person next to the one manipulating the keyboard will be made extremely difficult, if not impossible. Furthermore, a finger print on the keys will not make it possible to find the key. order of

digits that make up the code.

  Of course, the present invention is not limited to the embodiment described and

  illustrated which has been given only as an example.

  Thus, the arrangement of the keys on the keyboard, their number, and the application of the keyboard can be any without departing from the scope of the invention. This means that the invention includes all the technical equivalents of the means described and their combinations if they are carried out according to its spirit.

Claims (3)

  1 improved keypad and usable for example for the unlocking of a door lock, safe or the like, characterized in that on said keys (T) are written Roman numerals for the composition of a non-identifiable code   during or after the keys are pressed.   2 keyboard according to claim 1, characterized in that it comprises at least three keys (2,3,4) respectively bearing the Roman numerals I, V and X. 3 keyboard according to claim 1 or 2, characterized in that in addition to the aforementioned keys (T, 2,3,4) it comprises a separation key (5), a validation key (6), and a cancel key or correction (7).