Passive remote control unit and remote control method
A technology of remote control device and remote control command, which is applied in the direction of antenna support/installation device, instrument, signal transmission system, etc., can solve the problem of remote control with battery, etc., and achieve the effect of low manufacturing cost, simple structure and suitable for mass production
Inactive Publication Date: 2013-10-16
MSTAR SOFTWARE R&D (SHENZHEN) LTD +1
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Problems solved by technology
[0005] The second technical problem to be solved by the present invention is to provide a remote control method that can use a passive remote control device for remote control, aiming at the defect that the existing remote control method uses infrared or radio frequency data transmission to make the remote control need a battery
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[0032] like figure 1 Shown is a schematic diagram of a passive remote control system 100 according to an embodiment of the present invention, wherein the controlled device 100 can be controlled by a passive remote control device 120 . The controlled device 100 may include various digital home appliances, such as but not limited to televisions, video recorders, multimedia players and the like. The controlled device 100 is provided with a remote control identification device 112 for identifying the remote control signal of the passive remote control device 120 and generating an internal remote control command.
[0033] like figure 2 Shown is a logic block diagram of the passive remote control device 120 according to an embodiment of the invention. The passive remote control device 120 includes an antenna 210 and a surface acoustic wave sensor 220 coupled thereto. combine figure 1 As shown, the antenna 210 is used to receive the electromagnetic wave emitted by the remote con...
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The invention discloses a passive remote control unit and a remote control method. The passive remote control device comprises an antenna for receiving a first electromagnetic wave and emitting a second electromagnetic wave, and a surface acoustic wave sensor coupled with the antenna for converting the received first electromagnetic wave into a surface acoustic wave and converting the surface acoustic wave after processing into the second electromagnetic wave which is emitted by the antenna based on a remote control action. Based on a controlled device in the invention, the remote control method comprises the following steps: emitting the first electromagnetic wave; receiving the second electromagnetic wave which is delayed to be reflected back; and identifying the remote control action based on the second electromagnetic wave which is delayed to be reflected back and generating a corresponding remote control command based on the identified remote control action. The remote control unit in the invention utilizes the surface acoustic sensor to realize passive remote control so as to achieve full miniaturization and simplification and low manufacturing cost.
Description
technical field [0001] The present invention relates to a wireless remote control device and a remote control method, more specifically, to a passive remote control device and a remote control method utilizing surface acoustic wave (surface acoustic wave, SAW) technology. Background technique [0002] For a long time, home appliances such as televisions, VCD / DVD recorders, stereos, karaoke machines, air conditioners, etc. have been operated with infrared wireless remote controls, and infrared remote controls require external power sources, most of which use two AAA batteries. According to statistics, the number of waste batteries produced by the use of remote controls is as high as billions each year, enough to circle the earth four and a half times. Therefore, infrared wireless remote controls have become a major burden on the earth's environmental protection. Moreover, the directivity of infrared data transmission also greatly restricts the use of infrared remote controlle...
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IPC IPC(8): G08C17/02G01L1/16H01Q1/24H01Q1/36
Inventor 范锦华
Owner MSTAR SOFTWARE R&D (SHENZHEN) LTD