ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
H04L0021040000 at the receiving end 1
H04L0023000000 Apparatus or local circuits for telegraphic systems other than those covered by groups ; H04L0015000000-H04L0021000000 1
H04L0023020000 adapted for orthogonal signalling 1
H04L0025000000 Baseband systems 1
H04L0025020000 Details 1
H04L0025030000 Shaping networks in transmitter or receiver, e.g. adaptive shaping networks 1
H04L0025040000 Passive shaping networks 1
H04L0025050000 Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate 1
H04L0025060000 Dc level restoring means; Bias distortion correction 1
H04L0025080000 Modifications for reducing interference; Modifications for reducing effects due to line faults 1
H04L0025100000 Compensating for variations in line balance 1
H04L0025120000 Compensating for variations in line impedance 1
H04L0025140000 Channel dividing arrangements 1
H04L0025170000 Interpolating arrangements 1
H04L0025180000 Arrangements for inductively generating telegraphic signals 1