Transbody communication systems employing communication channels

Pursuant to 35 U.S.C. § 119 (e), this application claims priority to the filing dates of the U.S. Provisional Patent Application Ser. Nos. 60/990,562 filed Nov. 27, 2007; 60/990,567 filed Nov. 27, 2007 and 60/990,572 filed Nov. 27, 2007; which applications are incorporated herein by reference for all purposes.

Communications play an important role in today\'s world. Transbody communications, for example, are finding increasing use in medical applications. The term “transbody communications” generally refers to transmission of a signal from an in vivo location to a receiver location, e.g., a second in vivo location, a receiver location extracorporeally associated with the body, etc.

Communications, however, may be susceptible to errors. In particular, noisy transmission environments may distort and corrupt communication data. The noisy transmission environments include the body. Additionally, communication devices may err in signal generation and measurement related to the communication data.

Further, various devices and combinations of devices may exact high power consumption, resulting in a relatively short life cycle for the devices inside the body. Such a short life cycle may result in replacement surgeries and other inconvenient, expensive, and/or high-risk procedures.

As such, there is a continued need for accurate communications and error-free data provided via long-lasting devices. Of particular interest is development of communications channels that may be readily deployed to reliably communicate information from an in vivo location to a receiver positioned in, or in close physical proximity to, a body.

The system includes an in vivo transmitter to transmit an encoded signal; a transbody functionality module to facilitate communication of the encoded signal; and a receiver to receive the encoded signal to at least facilitate accurate transbody communications and conserve power consumption. The system may further include at least one of a beacon functionality module, a frequency hopping functionality module, and a collision avoidance functionality module. Related methods and apparatus are also provided.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 illustrates a communication environment, including a transbody communication system having a transbody functionality module.

FIG. 2 illustrates the transbody functionality module of FIG. 1 in greater detail.

FIG. 3A illustrates a beacon wakeup module providing a sniff period longer than a transmit signal repetition period.

FIG. 3B illustrates a beacon wakeup module providing a short but frequent sniff period and a long transmit packet are provided.

FIG. 4A illustrates a resonant, narrow band analog circuit.

FIG. 4B illustrates classic power detection circuit.

FIG. 5 illustrates beacon functionality having a long period of a continuous wave tone.

FIG. 6 illustrates a beacon functionality wherein a beacon is associated with one frequency and a message is associated with another frequency.

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