Asymmetric circuitry,申请号US201414183321-传众专利搜索

Asymmetric circuitry

申请公布号：US9607586(B2)

申请号：US201414183321

申请日期：2014.02.18

申请公布日期：2017.03.28

申请人：

Apple Inc.

发明人：Liu Michael L.;Deng Liang

分类号：G09G5/395;H03K19/00;G06F7/533;H03K19/173

主分类号：G09G5/395

代理机构：

Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

代理人：Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C. ;Davis Michael B.

地址：Cupertino CA US

摘要：Techniques are disclosed relating to asymmetric circuits. In some embodiments, a storage element is configured to maintain a first input value as an input to an asymmetric circuit during a time interval. For example, in one embodiment, the time interval may correspond to a frame of video data and the storage element may be configured to store a filter coefficient for the frame of video data. In some embodiments, the storage element may be configured to store the value as a constant for multiple operations by the asymmetric circuit. In some embodiments, the asymmetric circuit is configured to generate a plurality of output values based on the first input value and respective ones of a set of second input values. In some embodiments, the asymmetric circuit is leakage power asymmetric and/or critical path asymmetric. This may increase performance and/or reduce power consumption.

主权项：1. An apparatus, comprising: an asymmetric circuit configured to generate, during a time interval, a plurality of output values, each at a different time during the interval, based on a first input value and respective ones of a set of second input values, wherein the respective ones of the set of second input values are input to the asymmetric circuit at different times during the time interval; and a storage element configured to maintain the first input value as an input to the asymmetric circuit during the time interval; wherein a first portion of the circuit that is driven by the first input value includes one or more transistors with a first threshold voltage and wherein a second portion of the circuit that is driven by the set of second input values includes one or more transistors with a second threshold voltage that is lower than the first threshold voltage.