公开(公告)号：US20150222658A1

公开(公告)日：2015-08-06

申请号：US14614038

申请日：2015-02-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Hun-Seok KIM ,  Anand Ganesh DABAK ,  Jing-Fei REN ,  Manish GOEL

IPC: H04L29/06 ,  H04L29/08

CPC classification number: H04L63/1466 ,  H04K1/003 ,  H04K3/25 ,  H04K3/46 ,  H04K3/65 ,  H04K3/827 ,  H04K3/86 ,  H04K2203/22 ,  H04L9/3271 ,  H04L67/12 ,  H04L2209/805 ,  H04W12/12

Abstract: An apparatus for preventing a relay attack that includes a microcontroller, a receiver, and a transmitter. The receiver is configured to receive a challenge message from a verifier. The challenge message has a challenge message frequency at a first challenge message frequency during a first time slot. The transmitter is configured to transmit a response message to the verifier. The response message has a response message frequency at a first response message frequency during the first time slot. The first response message frequency is different than the first challenge message frequency. The challenge message frequency is at a second challenge message frequency and the response message frequency is at a second response message frequency during a second time slit. The second challenge message frequency is different than the second response message frequency.

Abstract translation: 一种用于防止包括微控制器，接收器和发射器的中继攻击的装置。 接收器被配置为从验证器接收挑战消息。 挑战消息在第一时隙期间在第一挑战消息频率处具有挑战消息频率。 发送器被配置为向验证者发送响应消息。 响应消息在第一时隙期间具有在第一响应消息频率处的响应消息频率。 第一响应消息频率与第一挑战消息频率不同。 挑战消息频率处于第二挑战消息频率，并且响应消息频率在第二时间缝隙期间处于第二响应消息频率。 第二挑战消息频率与第二响应消息频率不同。

公开(公告)号：US20170272723A1

公开(公告)日：2017-09-21

申请号：US15073078

申请日：2016-03-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Jing-Fei REN ,  Darnell MOORE ,  Do-Kyoung KWON

IPC: H04N13/00 ,  G06T7/00

CPC classification number: H04N13/128 ,  G06T7/0075 ,  G06T2207/10012 ,  H04N13/239 ,  H04N2013/0081

Abstract: Apparatus and methods for disparity cost computation for a stereoscopic image. In an example, a method includes computing partial path matching costs for multiple disparities of pixels of multiple parallelogram blocks of an image in a forward pass direction. Between computing the partial path matching costs of the pixels of adjacent parallelogram blocks, the method includes computing partial path matching costs for the plurality of disparities of pixels along a boundary edge of a corresponding rectangular tile using paths that are external to the rectangular tile and computing partial path matching costs the disparities for all of the pixels of the corresponding rectangular tile. The method also includes computing total aggregated disparity costs for each disparity of the pixels of the image using the partial path matching costs computed for the pixels in the parallelogram blocks and in the rectangular tiles.