公开(公告)号：US07196737B1

公开(公告)日：2007-03-27

申请号：US10349941

申请日：2003-01-24

Applicant: Stefan Fulga ,  David Rahn ,  Michael Toner ,  John Rogers ,  Brian Robar ,  Zhan Feng Zhou

Inventor： Stefan Fulga ,  David Rahn ,  Michael Toner ,  John Rogers ,  Brian Robar ,  Zhan Feng Zhou

IPC: H04N5/63

CPC classification number: H03J1/0008 ,  H03F2200/372

Abstract: Currently tuner circuits maintain normal power consumption while they are receiving RF signals and do not have provisions therein for disabling portions of their circuitry for reducing of power consumption. For example, during changing of channels, portions of the tuner are not used while the tuner is waiting for channel data. Thus, disabling portions of the circuit while the tuner is waiting for data serves to reduce power consumption of the tuner. Furthermore, tuner power consumption is reduced by determining whether a signal input to the tuner circuit requires amplification or not, or whether linearity in the amplifier can be sacrificed by a reduction in amplifier gain. Thus, a tuner circuit is provided that has control loop circuitry to execute control loops for controlling the gain and linearity of the tuner, as well as power consumption of circuitry therein.

Abstract translation: 目前，调谐器电路在接收RF信号时保持正常功耗，并且在其中没有设置用于禁止其电路的部分以降低功耗。 例如，在频道改变期间，当调谐器等待频道数据时，不使用调谐器的部分。 因此，当调谐器等待数据时禁止电路的部分用于减少调谐器的功耗。 此外，通过确定输入到调谐器电路的信号是否需要放大，或者放大器的线性度是否可以通过放大器增益的降低来牺牲来减少调谐器功耗。 因此，提供了一种调谐器电路，其具有控制环路电路，以执行用于控制调谐器的增益和线性度的控制回路以及其中的电路的功率消耗。