Showing papers on "Effective number of bits published in 1968"
Patent•
16 Oct 1968TL;DR: In this article, a single series pulse code modulation train is derived and is comprised exclusively of ringing bits, and the remaining bits of the single series PCC modulation train are replaced with synchronizing signals.
Abstract: In a control signal transmission system of a time division multiplex system a plurality of series pulse code modulation trains including binary data bits and ringing bits or signalling bits are provided in parallel. A single series pulse code modulation train is derived and is comprised exclusively of ringing bits. In the single series pulse code modulation train, the minimum number of ringing bits required for transmitting ringing information in a unit time is maintained. The remaining bits of the single series pulse code modulation train are replaced with synchronizing signals.
9 citations
Patent•
19 Nov 1968
TL;DR: In this article, a method and apparatus for performing the method for eliminating transients at the output of a digital to analog (D/A) converter is disclosed, where pulses representing all bits of a multibit digital word applied to a D/A converter are time synchronized by independently delaying their leading and trailing edges.
Abstract: A method and apparatus for performing the method for eliminating transients at the output of a digital to analog (D/A) converter is disclosed. Pulses representing all bits of a multibit digital word applied to a D/A converter are time synchronized by independently delaying their leading and trailing edges. The delay is achieved by integrating the pulse edges of all bits at a variable rate and applying the integrated pulse edges to a threshold circuit to recover them. Varying the integration rate of the various bits allows the time synchronization.
4 citations
01 Aug 1968
TL;DR: A design method is described by which a number x, in binary code, can be used to generate the binary form of log2x, and the mantissa of the logarithm can be generated with an adequate number of bits, without undue increase in the complexity of the system.
Abstract: A design method is described by which a number x, in binary code, can be used to generate the binary form of log2x. Unlike earlier methods, this does not depend on an approximation to a linear relatioqship between x and log2x. The mantissa of the logarithm can be generated with an adequate number of bits, without undue increase in the complexity of the system. However, the system becomes more complex when the number of bits in x is increased. The design is illustrated with 8 bits of log2x and up to 6 bits of x.
3 citations
TL;DR: A new method of ADC which reduces noise by the measurement of the signal area by comparing it to a number of elementary charges, this number being the digital value proportional to the energy of the detected particle.
Abstract: A new method of ADC which reduces noise by the measurement of the signal area is described The area is evaluated by an integrator which compares it to a number of elementary charges, this number being the digital value proportional to the energy of the detected particle Further improvements of the method are indicated