BINARY TO TERNARY CONVERTER

• US 3,671,959 A
• Filed: 01/20/1970
• Issued: 06/20/1972
• Est. Priority Date: 01/24/1969
• Status: Expired due to Term

• Current Assignee: Kitsutaro Amano
• Original Assignee: Kitsutaro Amano
• Inventors: Amano, Kitsutaro
• Primary Examiner(s): Maynard R. Wilbur
• Assistant Examiner(s): Charles D. Miller
• Application Number:
  US05/004,217
• Time in Patent Office: 882 Days
• Field of Search: 340/347,352 235/154 178/66,68,53.1 325/38
• US Class Current: 341/57
• CPC Class Codes: H04L 25/4925 using balanced bipolar ternary codes

Abstract

A system for converting two binary pulse trains to a ternary pulse train in which the states of signal elements of a pulse train of bipolar code corresponding to a first binary information train are modified in accordance with the states of signal elements of a second binary information train so as to be against the rule of alternation of polarities '"'"''"'"''"'"''"'"'+'"'"''"'"''"'"''"'"' and '"'"''"'"''"'"''"'"'-'"'"''"'"''"'"''"'"' of the bipolar code if at least two signal elements of the pulse train of bipolar code have the same state '"'"''"'"''"'"''"'"'1'"'"''"'"''"'"''"'"' or '"'"''"'"''"'"''"'"'0.'"'"''"'"''"'"''"'"' The abovementioned modification is performed, except for the first signal element of the same state '"'"''"'"''"'"''"'"'1'"'"''"'"''"'"''"'"' or '"'"''"'"''"'"''"'"'0,'"'"''"'"''"'"''"'"' for each signal element or for each pair of adjacent two signal elements.

Claims

1. A system for converting two binary information signal trains to a ternary pulse train, comprising:

conversion means having an input for application of a first binary information train for converting said first binary information train to a pulse train of bipolar code, detection means having an input coupled to said conversion means input for detecting the occurrence of groups of three or more successive signal elements of the same state from the first binary information train, and control means coupled to said conversion means and said detection means and having an input terminal for application of a second binary information train, wherein said control means is for modifying the states of signal elements of the pulse train of bipolar code in accordance with the states of the signal elements of the second binary information train so as to oppose the rule of alternation of polarities '"'"''"'"''"'"''"'"'+'"'"''"'"''"'"''"'"' and '"'"''"'"''"'"''"'"'-'"'"''"'"''"'"''"'"' of The bipolar code in response to said detection of the detection means.

2. A system for converting two binary information signal trains to a ternary pulse train, comprising:

a first input terminal for receiving a first binary information train, a second input terminal for receiving a second binary information train, an output terminal for sending out the ternary pulse train, first signal generating means connected to the first input terminal to generate an output pulse in response to three successive signal elements of the same state '"'"''"'"''"'"''"'"'1'"'"''"'"''"'"''"'"' after a signal element of the state '"'"''"'"''"'"''"'"'0'"'"''"'"''"'"''"'"' in the first binary information train and to generate an output pulse in response to each pair of successive two signal elements of the same state '"'"''"'"''"'"''"'"'1'"'"''"'"''"'"''"'"' after said three signal elements in the first binary information train, second signal generating means connected to the first input terminal to generate an output pulse in response to three successive signal elements of the state '"'"''"'"''"'"''"'"'0'"'"''"'"''"'"''"'"' after a signal element of the state '"'"''"'"''"'"''"'"'1'"'"''"'"''"'"''"'"' in the first binary information train and to generate an output pulse in response to each pair of successive two signal elements of the same state '"'"''"'"''"'"''"'"'0'"'"''"'"''"'"''"'"' after said three signal elements of the state '"'"''"'"''"'"''"'"'0'"'"''"'"''"'"''"'"' in the first binary information train, first gate means coupled to the second input terminal and to the first generating means for conducting therethrough the output pulses of the first generating means only when the state of the second binary information train assumes the state '"'"''"'"''"'"''"'"'1,'"'"''"'"''"'"''"'"' second gate means coupled to the second input terminal and to the second generating means for conducting therethrough the output pulses of the second generating means only when the state of the second binary information train assumes the state '"'"''"'"''"'"''"'"'1,'"'"''"'"''"'"''"'"' third gate means coupled to the first input terminal and to the first gate means for conducting therethrough the first binary information train only when the first gate means generates no output, a bistable circuit coupled to the outputs of the first, second and third gate means for reversing its stable state in response to each of the output pulses of the first, second and third gate means, and control means having inputs coupled to the bistable circuit and to the first, second and third gate means, and having an output coupled to the output terminal, for converting the first binary information train received from the third gate means to a pulse train of bipolar code and for converting the outputs of the first and second gate means in accordance with the state of the bistable circuit so as to oppose the rule of alternation of polarities '"'"''"'"''"'"''"'"'+'"'"''"'"''"'"''"'"' and '"'"''"'"''"'"''"'"'-'"'"''"'"''"'"''"'"' of the bipolar code.

3. A system for converting two binary information signal trains to a ternary pulse train, comprising:

a first input terminal for receiving a first binary information train, a second input terminal for receiving a second binary information train, an output terminal for sending out the ternary pulse train, first signal generating means connected to the first input terminal to generate an output pulse in response to each of successive signal elements of the same state '"'"''"'"''"'"''"'"'1'"'"''"'"''"'"''"'"' of the first binary information train, except for the first of said successive signal elements, second signal generating means connected to the first input terminal to generate an output pulse in response to each of successive signal elements of the same state '"'"''"'"''"'"''"'"'0'"'"''"'"''"'"''"'"' of the first binary information train, except for the first of said successive '"'"''"'"''"'"''"'"'0'"'"''"'"''"'"''"'"' signal elements, first gate means coupled to the second input terminal and to the first generating means for conducting therethrough the output pulses of the first generating means only when the state of the second binary information train assumes the state '"'"''"'"''"'"''"'"'1,'"'"''"'"''"'"''"'"' second gate means coupled to the second input terminal and to the second generating means for conducting therethrough the output pulses of the second generating means only when the state of the second binary information train assumes the state '"'"''"'"''"'"''"'"'1,'"'"''"'"''"'"''"'"' third gate means coupled to the first input terminal and to the first gate means for conducting therethrough the first binary information train only when the first gate means generates no output, a bistable circuit coupled to the input terminal for reversing its stable state in response to each signal element of the state '"'"''"'"''"'"''"'"'1'"'"''"'"''"'"''"'"' of the first binary information train, and control means having inputs coupled to the bistable circuit and to the first, second and third gate means, and having an output coupled to the output terminal for converting the first binary information train received from the third gate means to a pulse train of bipolar code and for converting the outputs of the first and second gate means in accordance with the state of the bistable circuit so as to oppose the rule of alternation of polarities '"'"''"'"''"'"''"'"'+'"'"''"'"''"'"''"'"' and '"'"''"'"''"'"''"'"'-'"'"''"'"''"'"''"'"' of the bipolar code.