摘要:
An error reducing arrangement is provided for a signal receiver wherein a sequence of received signals is divided into groups and each group is partitioned into subgroups. A signal representative of the deviations among the signals of each group and a signal representative of the deviations among the signals of each subgroup of said group are generated. Responsive to a subgroup deviation signal exceeding its group deviation signal, the subgroup signals are altered to reduce the subgroup deviations. In this manner errors are reduced without affecting error free signals.
摘要:
A polarity reversal arrangement provided with two seriesarranged electronic switching elements, for example, for use in pulse code modulation. freedom In order to satisfy the strict requirements of polarity reversal at the instants of an alternation of polarity of the signals from a signal source and the requirement of freedom from distortion, the polarity reversal arrangement is provided with a bridge composed of resistors wherein the signal source is connected to one end of a diagonal branch of the bridge and wherein the input circuit of an amplifier reversing the polarity of the input signal is connected to the other end of this diagonal branch and wherein the series arrangement of the two electronic switching elements is included between the ends of the other diagonal branch, the junction of the electronic switching elements being connected to the output circuit of the amplifier, while the output signals of the polarity reversal arrangement are derived from one end of the last-mentioned diagonal branch of the bridge.
摘要:
A diode that conducts current by the microplasma effect is used as an analog modulation to pulse code modulation converter. The analog signal is superimposed on a constant reverse-bias diode current to give a modulated microplasma pulsed output from the diode. This output, in the form of constant amplitude pulses of varying width and frequency, is converted back to the original analog signal by a low-pass filter.
摘要:
A sampled data system having improved (sin X)/X correction is provided. A modified switched capacitor filter is used as a receive filter. The switched capacitor filter is modified in a manner to provide a charge gain thereby avoiding the increase in thermal noise normally associated with voltage gain amplification. The modified switched capacitor filter does not impair the dynamic range of the system and can be made duty cycle independent by providing additional controllable switches to the filter.
摘要:
There is disclosed herein a circuitry system comprising first and second IC chips, configured or configurable such that; the first IC chip has an output terminal connected to receive an output signal from an output-signal unit of the first IC chip, the output-signal unit being connected between high and low voltage-reference sources of the first IC chip, the high and low voltage-reference sources being connected to respective high and low voltage-reference terminals of the first IC chip; and the second IC chip has an input terminal connected in a potential-divider arrangement between high and low voltage-reference terminals of the second IC chip, wherein: the high and low voltage-reference terminals of the first IC chip are respectively connected to the high and low voltage-reference terminals of the second IC chip; and the output terminal of the first IC chip is connected to the input terminal of the second IC chip.