Remote control system and method having reduced vulnerability to noise
AssigneeSamsung Electronics Co., Ltd.
InventorByeong-Gyun You
Life of this patent
Estimating the term…
Abstract
A remote control system and method having reduced vulnerability to noise. In an environment having noise at a frequency of infrared signals transmitted by a remote controller, errors and malfunctions in a remote control receiving device such as a set top box are controlled by selectively transmitting an entire code including header pulses and data pulses, or a repeat code including header pulses, data pulses and repeater pulses from the remote controller, and receiving and using the entire code or repeat code at the remote receiving device.
Claims19
A remote control system, comprising:
- a remote controller to repeatedly transmit a code comprising header pulses and data pulses corresponding to a pushed button;
- and
- a remote control receiver to receive and decode the code, and to determine whether to process instructions corresponding to the code based on a difference between a first decoding time when the code is decoded and a second decoding time when a second code immediately preceding the code in decoded,
- wherein the remote controller is configured to repeatedly transmit the code in response to the button being pushed once.
A remote control receiver, comprising:
- an infrared module to receive a code including header pulses and data pulses;
- a signal decoding module to extract numeric data by decoding the received code, and to determine a first decoding time when the received code is decoded;
- a signal analysis module to determine whether to process instructions corresponding to the numeric data based on a difference between the first decoding time and a second decoding time when a second code immediately preceding the received code is decoded;
- and
- a main processor to process the instructions corresponding to the numeric data.
A remote controller, comprising:
- a signal encoding module to generate a first code corresponding to a pushed button, the first code comprising first header pulses, first repeater pulses, and first data pulses;
- and
- an infrared port to transmit the first code and duplicate of the first code in response to the button being pushed once,
- wherein, in response to the button being pushed more than once, the infrared port is configured to transmit a second code comprising second header pulses and second repeater pulses, and
- wherein the signal encoding module in configured to generate the second repeater pulses with a time period shorter than a time period of the first repeater pulses.
A remote control method, comprising:
- transmitting, at a remote controller, a code comprising a header pulse signal and a data pulse signal, repeatedly;
- and
- receiving and decoding, at a remote controller receiver, the code, and determining whether to process instructions corresponding to the code based on a difference between a first decoding time when the code is decoded and a second decoding time when a second code immediately preceding the code is decoded,
- wherein the remote controller repeatedly transmits the code in response to a button of the remote controller being pushed once.
A remote control system, comprising:
- a remote controller configured to transmit a same signal more than twice in response to a user pushing a button once;
- and
- a remote control receiver configured to:
- sequentially receive and decode the transmitted signals;
- determine that a first signal of the transmitted signals emitted from the remote controller is not recognized based on a difference between a first decoding time when a subsequent signal is decoded and a second decoding time when the first signal immediately preceding the subsequent signal is decoded;
- and
- process, in response to the determination, the subsequent signal of the transmitted signals.
Dependencies are inferred from the claim text.