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Baud rate modulation encoding/decoding method and device for remote controllerRelated Patent Categories: Cryptography, Communication System Using Cryptography, Wireless Communication, Plural Modulation Of Single CarrierBaud rate modulation encoding/decoding method and device for remote controller description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070286414, Baud rate modulation encoding/decoding method and device for remote controller. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention generally relates to wireless signal transmission encoding/decoding method and device, more particularly, to encoding/decoding method and device that utilizing baud rate to encrypt data for transmission. [0003] 2. Description of the Prior Art [0004] Remote controller is used wildly in our daily life. Its application can be found in many fields such as car security, house security, audio/video equipment, and other appliances. In such applications, remote controller plays an important roll in convenience for usage. Although in many applications, security is not a major concern, it is a critical issue in some certain circumstances such as in car security system, home security, and TV channel protection. [0005] In general, the remote controller system can be classified into two categories of one-direction and bi-direction. In a one-direction remote controller system, transmitter simply transmits control signal to control equipment in remote location. While in a bi-direction remote controller system, control signal is transmitted interactively between transmitter and receiver. The bi-direction remote controller system is much more reliable for it employs the function of mutual authentication. However, since it is complex and expensive, it is seldom used except in some certain cases. [0006] In a simplest remote controller system, the control signal is formatted in plaintext and transmitted wirelessly to the receiver. Since the control signal is transmitted in plaintext, it is so easy to be eavesdropped and modified by a hacker, so the system is extremely unsecured. A common example can be seen pretty often in daily life, that is, when someone uses a remote controller for opening his own garage door, he is opening his neighborhood's garage door at the same time. [0007] As technology advanced and for security reason, more and more remote controllers transmit signal in encrypted format, which means, when a remote controller is transmitting signals, the signal is separated into plain code and encrypted code. The plain code is in regular format, comprising fixed data structure, while the encrypted code, in transmission, is encrypted with certain mathematical algorithm and is difficult to be decoded by hacker. The concept of encrypting signal for security reason is not so difficult to understand, however, the practical implementation is quite complex, and the cost is relatively high. The present invention is to disclose a signal transmitting method and device that plain code and encrypted code will be encapsulated in one single signal. The application can be seen where the plain code is used in a public entrance security system such as a community gateway or a public garage door that only need the plain code for identification, while in different application such as a private garage door security system, the plain code and the encrypted code will be verified in the same time for strict authentication. SUMMARY OF THE INVENTION [0008] Accordingly, it is the primary object of the present invention to provide wireless signal transmission encoding/decoding method and device, more particularly, the encoding/decoding method and device that utilizes logical algorithm to encrypt signal for transmission. [0009] It is the second object of the present invention to encoding/decoding method and device that is simple and less expensive. [0010] The method of the present invention is to employ baud rate modulation to encrypt transmission data and encapsulate the transmission data in transmission signal for transmission, comprising the steps as follows: [0011] (a). utilizing a identification signal to generate a plain code and a encrypted code; [0012] (b). utilizing the encrypted code to control the baud rate for transmitting the plain code; when the encrypted code is in a first base, the plain code corresponding to the encrypted code will be transmitted with a first baud rate; when the encrypted code is in a second base, the plain code corresponding to the encrypted code will be transmitted with a second baud rate. [0013] The device of the present invention is to employ baud rate modulation to encrypt transmission data, comprising: [0014] an encoder for receiving an identification code and encoding a portion of the identification code into an encrypted code; [0015] an interpreter being connected to the encoder for complying the un-encoded portion of the identification code and the encrypted code into a transmission signal; [0016] wherein, in the encoding process, the encoder will encode the length of the waveform of the un-encoded portion of the identification code according to the following rules, [0017] (1). when the encrypted code is in a first base, the plain code corresponding to the encrypted code will be transmitted with a first baud rate; [0018] (2). when the encrypted code is in a second base, the plain code corresponding to the encrypted code will be transmitted with a second baud rate. [0019] The decoding device of the remote controller of the present invention comprises: [0020] a receiver for receiving transmission signal; [0021] an interpreter being connected to the receiver for utilizing a given baud rate to interpret the transmission signal into a received signal; [0022] an encoder utilizing a logical algorithm to generate a comparison code; and Continue reading about Baud rate modulation encoding/decoding method and device for remote controller... Full patent description for Baud rate modulation encoding/decoding method and device for remote controller Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Baud rate modulation encoding/decoding method and device for remote controller patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Baud rate modulation encoding/decoding method and device for remote controller or other areas of interest. ### Previous Patent Application: Implementation of aes encryption circuitry with ccm Next Patent Application: Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system Industry Class: Cryptography ### FreshPatents.com Support Thank you for viewing the Baud rate modulation encoding/decoding method and device for remote controller patent info. IP-related news and info Results in 0.15884 seconds Other interesting Feshpatents.com categories: Electronics: Semiconductor , Audio , Illumination , Connectors , Crypto , 174 |
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