专利名称：Frequency-stabilized two-state modulation发明人：Froeschle, Thomas A.申请号：EP85303763.8申请日：19850529公开号：EP0184280A1公开日：19860611
专利附图：
摘要：A two-state modulation system includes a hysteretic comparator (31, 36) withvariable thresholds, a two-state processor (11) and an integrating element (16). Asumming circuit (23) combines the signal input (51), a delay compensating signal feedbackinput (S9) and a feedback (S8) input from the integrating element (16) at the output of
the, two-state processor. The hysteretic comparator receives a hysteresis control signal(S12) that varies the threshold. The hysteresis control signal may be provided by analogswitches (91, 92) switched by the switching signal to provide the switched two-state levelsto a low pass filter. Rectifying circuitry may also be used for supplying the hysteresiscontrol signal. Limiters and compressors may be connected to the input with the limiterlimiting levels tracking the two-state levels, and the compression proportional to theswitching frequency.
申请人：BOSE CORPORATION
地址：100 The Mountain Road Framingham, Massachusetts 01701 US
国籍：US
代理机构：Brunner, Michael John
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