PCM encoder system Final report
Design and performance of pulse code modulated encoder system
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Block encoders for Reed-Muller codes
Encoding algorithms generate a 32 x 64-bit matrix Reed-Muller code from a 6-bit orthogonal code-word. This increases error-free reception by a high rate telemetry channel under adverse signal noise with minimal use of additional hardware.
Anderson, T. O.↗
Design and development of an integral brushless dc torquer-encoder Final summary report
Design recommendations for integral brushless torquer-encoder based on Hall resolver principle
Malkiel, S.↗
Low-power encoder system using electron beam derived from a cold source Final report
Low power encoder system using electron beam derived from cold source
Hafle, R.↗
An evaluation of precision shaft angle encoders
Shaft misalignment effect on accuracy of precision digital shaft angle encoders, using test fixture and optical methods
Moye, J. E.↗
New developments in convolutional encoding and decoding
Convolutional encoding and decoding developments, and applications in deep space communication
Lynch, T. J.↗
Minimal logic block encoder Patent
Encoders designed to generate comma free biorthogonal Reed-Muller type code comprising conversion of 64 6-bit words into 64 32-bit data for communication purposes
Duffy, J. O.↗
The complexity of deterministic source encoding with a fidelity criterion
Problem of deterministic source encoding with fidelity criteron using computational work
Savage, J. E.↗
Design of a radioactive non-contact encoder
N-P junction diode detector used in design of radioactive source non-contact encoder
Barnett, M. B.↗
A test set for integration of data compression/ error correction encoding techniques. I - System design and data compression considerations
Laboratory test set for integration of data compression and error correction encoding of digital communications system
Batson, B.↗
Encoding of a counting rate source with orthogonal functions
Counting rate source encoding algorithm with orthogonal functions in space experiment data processing before telemetering to ground
Algazi, V. R.↗
Comparison of line-by-line and two-dimensional encoding of random images
Random images transmission rates, comparing line- by-line and two dimensional encoding
Algazi, V. R.↗
Hadamard source encoding techniques applied to Apollo telemetry links - An evaluation
Hadamard transform source encoding application to Apollo unified S-band telemetry links, considering possible system performance improvement
Dawson, C. T.↗
Encoding and decoding of color information using two-dimensional spatial filtering.
Spatial frequency encoding is described as it applies to both photographic and television systems. In each case, color separations amplitude modulate spatial frequency carriers. The photographic system separates the carriers in the two-dimensional Fourier transform plane using coherent optics; the television system employs a two-dimensional electrical filter to perform the same separation. These filters are synthesized so that the two-dimensional bandwidths of the television camera are used efficiently. Nonlinear processing techniques are also described to minimize crosstalk between channels.
Schaefer, L. F.↗
Source encoding for two-dimensional data
Abstracts are presented of research conducted on source encoding for two-dimensional data.
Wintz, P. A.↗
Low-cost pressure-data encoder
Electronic encoding altimeter has pulsed output with pulse width proportional to altitude and converts pressure-proportional input voltage to digital signal that may then be routed to monitoring or display equipment.
Kolbly, R. B.↗
Digital plus analog output encoder
The disclosed encoder is adapted to produce both digital and analog output signals corresponding to the angular position of a rotary shaft, or the position of any other movable member. The digital signals comprise a series of binary signals constituting a multidigit code word which defines the angular position of the shaft with a degree of resolution which depends upon the number of digits in the code word. The basic binary signals are produced by photocells actuated by a series of binary tracks on a code disc or member. The analog signals are in the form of a series of ramp signals which are related in length to the least significant bit of the digital code word. The analog signals are derived from sine and cosine tracks on the code disc.
Hafle, R. S.↗
Electronic shaft-angle encoder
Contactless encoder is used at higher angular velocities and for objects lacking integral supporting shaft.
Powell, J. A.↗