Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
247 words
A time-division digital transmission system comprising transmitting and recieving stations and transmission lines interconnecting said respective stations using a binary code in said stations and a multi-level code in said transmission lines in which a number of component digital channels having a low flow rate are multiplexed into a single resultant channel having a high flow rate, said multi-level code being such that a number N of bits in said binary code in the transmitting and receiving stations corresponds to a smaller number N' of digits of the multi-level code whereby a predetermined flow rate in said stations corresponds to a smaller flow rate in said transmission lines which is equal to N'/N times said predetermined flow rate in said stations, said time-division digital transmission system comprising: 1. each of said transmitting stations having: a. means for placing in parallel the bits of a number of said component digital channels equal to an integral multiple k of N at the rate of one bit per component digital channel so as to form parallel words of kN bits; b. means for multiplexing the bits of said parallel kN-bit words into k parallel words of N bits; c. means for converting said parallel N-bit words from said binary code used in said stations into parallel words of N' digits in said multi-level code used in said transmission lines; and d. the multiplexing and code conversion being practically simultaneous without producing a binary multiplex signal which is serialized; and 2.
Claim 2
Dependent Claim
247 words
A time-division digital transmission system comprising transmitting and recieving stations and transmission lines interconnecting said respective stations using a binary code in said stations and a multi-level code in said transmission lines in which a number of component digital channels having a low flow rate are multiplexed into a single resultant channel having a high flow rate, said multi-level code being such that a number N of bits in said binary code in the transmitting and receiving stations corresponds to a smaller number N' of digits of the multi-level code whereby a predetermined flow rate in said stations corresponds to a smaller flow rate in said transmission lines which is equal to N'/N times said predetermined flow rate in said stations, said time-division digital transmission system comprising: 1. each of said transmitting stations having: a. means for placing in parallel the bits of a number of said component digital channels equal to an integral multiple k of N at the rate of one bit per component digital channel so as to form parallel words of kN bits; b. means for multiplexing the bits of said parallel kN-bit words into k parallel words of N bits; c. means for converting said parallel N-bit words from said binary code used in said stations into parallel words of N' digits in said multi-level code used in said transmission lines; and d. the multiplexing and code conversion being practically simultaneous without producing a binary multiplex signal which is serialized; and 2.
Claim 3
Dependent Claim
93 words
each of said receiving stations having: a. means for distributing the bits of said parallel words of kN bits at the rate of one bit on each of the kN component digital channels; b. means for converting said parallel N'-digital words into parallel N-bit words of said binary code used in said stations; c. means for forming parallel words of kN bits out of the number of k of N-bit words supplied by converting means in said receiving part; and d. means for multiplexing said parallel kN-bit words into kN bits at the
Claim 4
Dependent Claim
93 words
each of said receiving stations having: a. means for distributing the bits of said parallel words of kN bits at the rate of one bit on each of the kN component digital channels; b. means for converting said parallel N'-digital words into parallel N-bit words of said binary code used in said stations; c. means for forming parallel words of kN bits out of the number of k of N-bit words supplied by converting means in said receiving part; and d. means for multiplexing said parallel kN-bit words into kN bits at the
Claim 5
Dependent Claim
36 words
rate of one bit per component digital channel. 2. A time-division digital transmission system according to claim 1, in which N = 4 and in which said multi-level code has three levels and N' = 3.
Claim 6
Dependent Claim
14 words
A time-division digital transmission system according to claim 1, in which k = 4.
Claim 7
Dependent Claim
24 words
A time-division digital transmission system according to claim 1, in which said multi-level code used on said transmission lines is the three-level 4B3T code.
Claim 8
Dependent Claim
24 words
A time-division digital transmission system according to claim 1, in which said multi-level code used on said transmission lines is the three-level MS43 code.
Claim 9
Dependent Claim
27 words
A time-division digital transmission system according to claim 1, in which N = 3, and in which said multi-level code has four levels and N' = 2.
Claim 10
Dependent Claim
27 words
A time-division digital transmission system according to claim 1, in which N = 5, and in which said multi-level code has eight levels and N' = 2.