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Simple remote control systems use a fixed code word; the code word that opens the gate today will also open the gate tomorrow. An attacker with an appropriate receiver could discover the code word and use it to gain access sometime later. More sophisticated remote control systems use a rolling code (or hopping code) that changes for every use.
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Consumer IR, consumer infrared, or CIR is a class of devices employing the infrared portion of the electromagnetic spectrum for wireless communications. [citation needed] CIR ports are commonly found in consumer electronics devices such as television remote controls, PDAs, laptops, computers, and video game controllers.
The second byte is an opcode which specifies the operation to be performed, and the number and meaning of following parameter bytes. For example, a user press on a remote control will generate a 3-byte frame: a header byte, a <User Control Pressed> opcode (0x44), and an operand byte identifying the button. Including the initial idle time and ...
Construction site at 10th and Broadway in Denver on Sept. 19, 2024. (Photo by Hyoung Chang/The Denver Post) (Hyoung Chang via Getty Images)
EIA 608 closed caption data on an NTSC analog television signal. EIA-608, also known as "Line 21 captions" and "CEA-608", [1] is a standard for closed captioning for NTSC TV broadcasts in the United States, Canada and Mexico.
Code Ann § 76-3-207 and § 76-5-202), effective May 11, 2010. Virginia—Revised the definition of capital murder to include fire marshals, auxiliary police officers, and auxiliary deputy sheriffs among law enforcement officers killed while performing official duties (Va Code § 18.2-31(6)), effective July 1, 2010.
The binary Golay code, G 23 is a perfect code. That is, the spheres of radius three around code words form a partition of the vector space. G 23 is a 12-dimensional subspace of the space F 23 2. The automorphism group of the perfect binary Golay code G 23 (meaning the subgroup of the group S 23 of permutations of the coordinates of F 23