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Class Information
Number: 375/249
Name: Pulse or digital communications > Pulse code modulation > Differential > Single bit (delta) > Compand (overload prevention)
Description: Subject matter in which the size of the incremental amount is variable over a wide dynamic range in response to predetermined patterns in the transmitted series of digital bits or "delta bits" (delta modulation pulse train).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4140876 |
Compressed speech system and predictor |
Feb. 20, 1979 |
| 4123709 |
Adaptive digital delta modulation for voice transmission |
Oct. 31, 1978 |
| 4110705 |
Noise reduction method and apparatus for companded delta modulators |
Aug. 29, 1978 |
| 4109203 |
Delta-modulation encoder |
Aug. 22, 1978 |
| 4100494 |
Dynamic control of code modulated pulse transmission |
Jul. 11, 1978 |
| 4100493 |
Transmission system for signal transmission by means of compressed delta modulation |
Jul. 11, 1978 |
| 4099122 |
Transmission system by means of time quantization and trivalent amplitude quantization |
Jul. 4, 1978 |
| 4090136 |
Method and apparatus for coding a signal |
May. 16, 1978 |
| 4075701 |
Method and circuit arrangement for adapting the measuring range of a measuring device operating with delta modulation in a navigation system |
Feb. 21, 1978 |
| 4071825 |
Adaptive delta modulation system |
Jan. 31, 1978 |
| 4059800 |
Digital multi-line companded delta modulator |
Nov. 22, 1977 |
| 4042921 |
Digital encoder/decoder |
Aug. 16, 1977 |
| 4039949 |
Pulse code modulation with dynamic range limiting |
Aug. 2, 1977 |
| 4039950 |
Pulse code transmitter and receiver designed to produce uniform transfer characteristics in the face of component variations |
Aug. 2, 1977 |
| 4039948 |
Multi-channel differential pulse code modulation system |
Aug. 2, 1977 |
| 4037226 |
Pulse code modulation compressor |
Jul. 19, 1977 |
| 4021799 |
Non-linear coding system |
May. 3, 1977 |
| 3995217 |
Method and apparatus for suppressing background noise in a digital telephone system |
Nov. 30, 1976 |
| 3995218 |
Adaptive delta modulation system for correcting mistracking |
Nov. 30, 1976 |
| 3975588 |
Acoustic feedback control |
Aug. 17, 1976 |
| 3975686 |
Loss signal generation for delta-modulated signals |
Aug. 17, 1976 |
| 3973081 |
Feedback residue compression for digital speech systems |
Aug. 3, 1976 |
| 3973199 |
Prediction differential pulse code modulation system with adaptive compounding |
Aug. 3, 1976 |
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