Electron beam matrix switch

DESCRIPTION

The present invention patent relates to an electron beam matrix switch.

More specifically in the invention, a type of switch applicable to the switching of telephone lines in telephone switching exchanges has been devised, which presents notable advantages and innovations over those currently in the market.

They are currently known in telecommunication exchanges and exchanges, switches with relex contacts, or electronic ones, in which the quantity of elements necessary for the commutation grows according to an exponential function with respect to the number of lines in the commutator.

These constitute a considerable complication when the number of lines to be switched is high, since a necessary amount of elements necessary for switching, as well as auxiliary control circuits, is required, with the technical complication logic that this represents, and the excessive cost that derives from it.

To avoid these drawbacks, the matrix electron beam switch object of the present invention has been devised, which has one or more arrays of cathode ray tubes on one side, another matrix or arrays of receiving plows being located on the opposite side. , leaving both formations of opposing elements.

The electron beams are directed towards the receiving anodes, whereby each electron beam is directed to a receiving anode.

The selection of the receiving anode for each cathode ray tube is performed by deflecting said beam into the cathode ray tube. This deflexer can be performed electrostatically or magnetically. In this way an electroanal circuit is established between each cathode and the corresponding selected anode.

Each electron beam can be controlled in intensity analogously or digitally, by means of a control grid, so that it will be the medium that carries the information (analogous or digital respectively), between the control grid and the receiving anode selected.

The grid will therefore be controlled by an electronic circuit that will be the transmitter of information, and the channel will be connected to another electroanal circuit that is the receiver of the information carried by the beam.

A series of auxiliary electronic circuits are needed, since each cathode ray tube requires an electronic circuit to select the chosen anode.

Likewise, another electronic circuit is required to introduce the information to be sent to the selected anode in the beam, and another electronic circuit to create and regulate the focus of the beam.

In addition, for each receiving anode an electronic circuit is needed that receives the transmitted information and makes it usable.

In the event that the electron beams interfere when they cross into the vacuum tube, the situation of the anodes required (or of the cathode ray tubes as appropriate) can be displaced, so as to avoid such crossings.

The matrix switch described, allows the simultaneous switching between a certain number of input lines that correspond to the cathode ray tubes, with another number of output lines that correspond to the anodes, being able to switch all the lines input to all output.

The advantage of this poisoning is evident when the number of lines to be switched is high, since it is possible to realize all the possibilities of switching with a single switching element (the matrix matrix switch), at the same time that It provides a high speed of channel change (choice of receiving anode), and a high speed of information transmission for each channel (each channel is established by an electron beam.

With the system described, the quantity of elements necessary for the commutation grows linearly with the number of lines in the matrix commutator, unlike the traditional commuting switches that follow an exponential function.

In order to facilitate the explanation, a description sheet of drawings is attached to the present specification in which a case study has been represented, which is cited by way of example.

In the drawings:

Figure 1 represents a sectioned elevation view of the matrix switch assembly.

Figure 2 corresponds to a sectioned elevation view of a cathode ray tube with its main elements.

Figure 3 is a schematic detail in which other elements of the cathode ray tube are shown.

Referring to the figures, an electron beam matrix switch is shown in its embodiment, which comprises cathode ray tubes -1-, arranged matrixally at one end of a vacuum tube -2-, in which other extreme and faced with the above is a matrix of receiving anodes -3-, which receive beams of electrons 4- emitted by the aforementioned cathode ray tubes -1-.

These cathode ray tubes -1-, have a series of elements arranged in a line, being at one end a heating filament -5- that through an emitting cathode -6-, emits the electrons towards an accelerating anode - 8- from which they leave at high speed, to then pass through a focus anode -9- that directs them towards vertical deflection plates -10- and horizontal -11-.

Likewise, the cathode ray tube -1- has a series of auxiliary elements such as elements for creating and focusing the beam -12-, beam intensity control -13-, and vertical and horizontal deflexioan control -14-.

The electrons thus emitted by the cathode ray tubes -1-, are received by the receiver -3- receptors, which transmit the signal to respective signal receptors -15-, which leave the information usable.

024 941

The invention, within its essentiality, can be brought into practice by other embodiments that differ in detail from that indicated by way of example in the description and which also achieved the protection sought. It may, therefore, be constructed in any way with the most suitable materials, as all of this is included in the spirit of the claims.

024 941