Method and apparatus for monitoring connections in a program controlled processing system

Claim 2

In a program controlled telecommunication exchange system wherein the identification of incoming and outgoing connections, which are connected to system connection circuits within a line connection unit, takes place in input and output code transducers, respectively, and which system includes a central memory in which a storage cell is permanently assigned to each incoming connection and can be accessed by means of an address for the connection determined through identification of the system connection circuit and which includes a transmission sequence control for controlling signal traffic between said code transducers and said central memory and wherein an operating cycle is provided so that each incoming connection producing a request signal is interrogated, a method for monitoring the system connection circuits producing request signals comprising the steps of: identifying in an input transducer, the address of a system connection circuit producing a request signal, placing said address of said system connection circuit in a first storage means, the address of a system connection circuit producing a preceeding request signal having been placed in a second storage means, comparing the contents of said first and second means, if the result of said comparison is that the contents of said first and said second storage means are not identical, transferring the contents of said first storage means to said second storage means, if the result of said comparison is that the contents of said first and second storage means are identical, communicating a signal indicating the result to a third storage means for continuous request signals, generating in said third storage means, as a result of receipt of said signal, a blocking signal, blocking the inputs of said first and second storage means upon appearance of said blocking signal, comparing upon the blocking of said inputs to said first and second storage means, the contents of said second storage means and address assigned to succeeding request signals, upon a determination of identity in the latter comparision step, blocking the transmission of the request signal to the transmission sequence control and generating an advancing signal upon a determination of identity in said latter comparison process and communicating said advancing signal to a said input code transducer.

Claim 3

The method defined in claim 1 comprising the additional step of: after allotment of a storage cycle with which the last preceding incoming connection request is completed, emitting an indicating signal from said input code transducer to said second address storage means for extinguishing the address stored therein.

Claim 4

In a program controlled telecommunication exchange system in which incoming and outgoing connections are identified over input and output code transducers, respectively, and having a central memory in which a storage cell is premanently assigned to each incoming connection and can be accessed by means of an address for the connection determined through identification and having a transmission sequence control for controlling signal traffic between said code transducers and said central memory and wherein an operating cycle is provided so that each incoming connection producing a connection request is interrogated, the improvement comprising: first address storage means, address line means connecting address outputs of said input code transducer to said first storage means for placing an address identified by said input code transducer in said first address storage means, first control means for evaluating request signals from said input code transducer, first gate means connecting an input of said first control means to a request output of said input code transducer, second storage means containing the address of the last preceding connection request, second gate means connecting an output of said first storage means to an input of said second storage means, first comparison means connected to outputs of said first and second storage means for comparing the contents of said first and second storage means, third storage means, means for switching said third storage means on, upon an indication by said first comparison means that the contents of said first and second stoRage means are identical, first blocking signal means connected to said first and second gate means for coupling a signal thereto blocking said first and second gates, said first blocking signal means being actuated upon actuation of said third storage means, second control means, third gate means connecting said second control means to said request output and to said blocking signal means, signals from said blocking signal means opening said third gate means for permitting said second control means to receive signals from said request output of said input code transducer, second comparison means connected to an output of said second address storage means and to said address line and responsive to actuation of said second control means by said third gate means for comparing the outputs of said second address storage means and said address line, fourth gate means for transmitting a connection request from said input code transducer to said transmission sequence control, and second blocking signal means for generating and transmitting a blocking signal to said fourth gate means responsive to an output from said second comparison means indicating identity and for generating an advancing signal communicated to said input code transducer.

Claim 5

In a program controlled telecommunication exchange system in which incoming and outgoing connections are identified over input and output code transducers, respectively, and having a central memory in which a storage cell is premanently assigned to each incoming connection and can be accessed by means of an address for the connection determined through identification and having a transmission sequence control for controlling signal traffic between said code transducers and said central memory and wherein an operating cycle is provided so that each incoming connection producing a connection request is interrogated, the improvement comprising: first address storage means, address line means connecting address outputs of said input code transducer to said first storage means for placing an address identified by said input code transducer in said first address storage means, first control means for evaluating request signals from said input code transducer, first gate means connecting an input of said first control means to a request output of said input code transducer, second storage means containing the address of the last preceding connection request, second gate means connecting an output of said first storage means to an input of said second storage means, first comparison means connected to outputs of said first and second storage means for comparing the contents of said first and second storage means, third storage means, means for switching said third storage means on, upon an indication by said first comparison means that the contents of said first and second stoRage means are identical, first blocking signal means connected to said first and second gate means for coupling a signal thereto blocking said first and second gates, said first blocking signal means being actuated upon actuation of said third storage means, second control means, third gate means connecting said second control means to said request output and to said blocking signal means, signals from said blocking signal means opening said third gate means for permitting said second control means to receive signals from said request output of said input code transducer, second comparison means connected to an output of said second address storage means and to said address line and responsive to actuation of said second control means by said third gate means for comparing the outputs of said second address storage means and said address line, fourth gate means for transmitting a connection request from said input code transducer to said transmission sequence control, and second blocking signal means for generating and transmitting a blocking signal to said fourth gate means responsive to an output from said second comparison means indicating identity and for generating an advancing signal communicated to said input code transducer.

Claim 6

The program controlled telecommunication exchange defined in claim 3 further comprising: means for indicating that all connection requests have been completed and for erasing, responsive thereto, the contents from said second address storage means.