发明名称 Stochastic signal density modulation for optical transducer control
摘要 A current supply is coupled to a light source. The current supply is further coupled to a controller. The controller is configured to provide a stochastic control signal to the current supply, wherein the stochastic control signal controls a light intensity output of the light source.
申请公布号 US9226355(B1) 申请公布日期 2015.12.29
申请号 US201313934032 申请日期 2013.07.02
申请人 Cypress Semiconductor Corporation 发明人 Van Ess David;Prendergast Patrick
分类号 H05B37/02;H05B33/08 主分类号 H05B37/02
代理机构 代理人
主权项 1. An apparatus, comprising: a current supply coupled to a light source; and a controller coupled to the current supply including: a comparator comprising a first input, a second input and an output,a stochastic state machine, coupled to the first input of the comparator, to generate a plurality of stochastic values, anda signal density register, coupled to the second input of the comparator, to hold a signal density value,wherein the output of the comparator is based on a stochastic value of the plurality of stochastic values and the signal density value, wherein the controller is configured to provide a stochastic control signal to the current supply, the stochastic control signal to control a light intensity output of the light source.
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