Abstract: Methods and systems for communicating a message through a communication network are provided. A method for transmitting a message through a communication network may include: partitioning the message into at least two parts; generating at least two bit sequences each of which carries a corresponding part of the message; modulating the at least two bit sequences to form a modulated signal frame which includes at least two modulated parts corresponding to the at least two bit sequences, respectively, where the at least two modulated parts of the modulated signal frame have different power levels; and transmitting the modulated signal frame through the communication network.

Abstract: A filter bank for signal decomposition is provided. The filter bank comprises a plurality of filter units each of which has one input and two outputs forming two paths whose transfer functions are complementary to each other, where the plurality of filter units are connected to form a tree structure.

Abstract: Method and system for sending messages are provided. The method may include: a head unit mounted on a vehicle providing a plurality of options each of which represents obtaining a corresponding piece of information; the head unit receiving a user instruction of selecting at least one of the plurality of options; the head unit obtaining at least one piece of information corresponding to the selected at least one option according to the user instruction; the head unit composing a first message using the obtained at least one piece of information; and the head unit sending to a first mobile device the first message and a request for forwarding the first message. Drivers can send a message safely and conveniently when driving.

Abstract: Method and system for obtaining on-line service are provided. The method may include: a vehicle mounted system sending a first piece of information about its capability and a request for an on-line service to a mobile communication device connected to the vehicle mounted system; and the vehicle mounted system receiving contents of the on-line service from the mobile communication device, where the contents of the on-line service are obtained by processing to match the capability of the vehicle mounted system. Computation load of the vehicle mounted system may be reduced and more utilization may be realized.

Abstract: The present invention relates to an identification holding apparatus, an optical fiber splicing and distribution module, an optical fiber management apparatus, and a method for assembling an optical fiber management apparatus. The optical fiber management apparatus includes the identification chip holding apparatus and the optical fiber splicing and distribution module, where a snap-on structure of the identification chip holding apparatus is fitted into an optical fiber connector, and a chip accommodating structure of the identification chip holding apparatus is installed in a hollow groove; and a chip in the chip accommodating structure implements external communication by using the chip accommodating structure and a printed circuit board.

Abstract: A navigation system is disclosed. The navigation system includes an image capturing device, a positioning device, and a processing device. The image capturing device is configured to capture an image of an object fed by a user. The positioning device is configured to obtain positioning information of the navigation system. The processing device is configured to: calculate a feature code based on features of a logo in the image; retrieve a piece of address information of a location corresponding to the feature code from a database; and calculate a route from the current location to the location corresponding to the piece of address using the positioning information and the piece of address information. A navigation method is also provided.

Abstract: A fiber optic probe for capable of simultaneously enhancing fluorescent emission collection and reducing stray excitation light noise levels while detecting the presence or absence of one or more substances within a medium. The probe includes an illuminating optical fiber for guiding excitation light from a light source to be launched from an end face of the illuminating optical fiber. A film or an immersion medium emits light when illuminated by the excitation light. The emitted light has a central wavelength that is different than a central wavelength of the excitation light. A receiving optical fiber receives and guides the emitted light. The receiving fiber may be a photonic crystal fiber having an end portion which is a solid segment of glass for improved light collection efficiency. A lens may be provided at the end of the receiving fiber. A detector detects light from the receiving optical fiber.

Abstract: A fiber optic probe for detecting the presence or absence of one or more substances within a medium. The probe comprises at least one illuminating optical fiber for guiding excitation light from a light source to be launched from an end face of the illuminating optical fiber. A film or an immersion medium is provided for emitting light when illuminated by the excitation light. The emitted light has a central wavelength that is different than a central wavelength of the excitation light. At least one receiving optical fiber is provided to receive and guide the emitted light. The receiving fiber may be a photonic crystal fiber having an end portion which is a solid segment of glass for improved light collection efficiency. A lens may be provided at the end of the receiving fiber. Detection means are provided for detecting light from the receiving optical fiber.