Automatic equilization for multiple polled stations

Abstract

Abstract THIS INVENTION RELATES IN GENERAL TO AUTOMATIC EQUALIZATION SYSTEMS, AND MORE PARTICULARLY RELATES TO A CENTRAL PROCESSOR WHICH INCORPORATES IN AUTOMATIC EQUALIZING SYSTEM CAPABLE OF EQUALIZING A RECEIVER TERMINAL AT THE CENTRAL PROCESSOR WHICH IS COMMON TO A LARGE NUMBER OF REMOTE STATIONS, THE CENTRAL PROCESSOR INCLUDES A POLLING CIRCUIT FOR ADDRESSING ANY ONE OF THE REMOTE STATIONS, WHICH REMOTE STATIONS EACH INCLUDE AN EQUALIZER CIRCUIT FOR THAT REMOTE STATION''S RECEIVING EQUIPMENT. EACH REMOTE STATION''S DIFFERENTIAL GEOGRAPHICAL LOCATION PRESENTS DIFFERENT EQUALIZATION REQUIREMENTS FOR ERROR-FREE COMMUNICATION WITH THE CENTRAL PROCESSOR, AND A PLURALITY OF EQUALIZING CIRCUITS ARE LOCATED AT THE CENTRAL PROCESSOR WITH ONE EQUALIZER CIRCUIT BEING ASSIGNED TO EACH REMOTE STATION. EACH EQUALIZER IS PREADJUSTED DURING AN EQUALIZING TEST SEQUENCE FOR THE REMOTE STATION TO WHICH IT IS ASSIGNED. THEREAFTER, DURING NORMAL DATA TRANSMISSION OPERATIONS, DECODING EQUIPMENT AT THE CENTRAL PROCESSOR LOCATION RECOGNIZES A POLLING ADDRESS AND DECODES THE IDENTITY OF THE POLLED REMOTE STATION. SWITCHING EQUIPMENT RESPONDS TO THE DECODER FOR AUTOMATICALLY CONNECTING THE POLLED REMOTE STATION''S EQUALIZER IN THE RECEIVE LINE PRIOR TO THE TIME THAT A RESPONSE FROM THE POLLED REMOTE STATION IS DUE TO BE RECEIVED AT THE CENTRAL PROCESSOR.

Inventors

• 👤 Sang Y Whang
• 👤 Edward Bleckner Jr

Bibliographic Details