Codex Corporation

About: Codex Corporation is a based out in . It is known for research contribution in the topics: Signal & Network packet. The organization has 189 authors who have published 241 publications receiving 32205 citations.

A generalized approach to interpretation machines

Abstract: There i s a g rowing a w a r e n e s s o f t h e i m p o r t a n c e o f s t r u c t u r e t o p r o g r a m m i n g [ 1 , 2 , 3 , 4 ] . The s t r u c t u r i n g o f p r o g r a m s , h o w e v e r , i s made d i f f i c u l t by t h e l a c k o f s t r u c t u r e i n t h e mechan i sms t h a t t h e p r o g r a m s a r e w r i t t e n f o r . Structured programming by almost anyone's definition requires the formalization into discrete processing blocks which pass information primarily through explicit arguments[S,6]. Yet compiler facilities are almost always developed in an ad hoc manner which prevents the structuring of compile time functions; operation systems provide loosely related sets of execution time facilities which oftenrequire implicit information passing; and computer instruction sets provide an inflexible set of computational s~ort cuts. External data storage and transmission structures are also very eclectic.

Spectral estimation of nonuniformly sampled data using an interpolation technique

Abstract: A standard technique for estimating the spectrum of a nonuniformly sampled signal is to first estimate a set of uniformly sampled correlation coefficients and then calculate the power spectrum of the signal as the discrete Fourier transform (DFT) of the correlation sequence. In the popular correlation slotting technique, the average of all the samples in a chosen slot is used to compute the correlation value. In the proposed technique, the value of the signal at a desired location is obtained using a linear interpolation technique. Bias in the spectral estimate due to interpolation is determined using theoretical analysis, and variance is estimated using simulation studies. The new method requires fewer computations than the slotting technique to yield a specified accuracy. >

A multirate root LPC speech synthesizer

Abstract: The root LPC system has closed form analysis and formant like synthesis structure. By using quadratic coefficient quantization and section repeat its data rate can be lower than 1Kbps. By including representative residual signal of variable repetition rate its quality can be continuously improved. A special purpose NMOS-LSI chip was built to implement the synthesis function.

Circuit and method of interconnecting content addressable memory

Abstract: A data compressor (14) generates codewords representative of the location and length of a string match between an input data stream and a CAM array vocabulary table (22). A data decompressor (16) looks up the codewords for a string match in its vocabulary table. The CAM array (50,52,54,56) is arranged in a serpentine configuration to reduce track layout. A column priority encoder (74) reverses the priority of alternate rows to maintain the logical flow through the CAM array. The CAM array uses a flipflop (122) with a common control circuit to transfer and refresh data through the flipflop.