Abstract: Touch-responsive data transmission system for elongating transceiver battery life and assuring one-touch data transmission includes a first transceiver worn on user and a second transceiver connected to equipment utilizing first transceiver data. User contacts first transceiver signal and ground electrodes and touches a second transceiver touch electrode to establish a signal path through user. First transceiver includes a detector for detecting a start signal from the second transceiver signal electrode. Second transceiver includes a generator for generating the start signal upon touching the touch electrode. Receiving the start signal, circuit elements responsible for data transmission are battery-energized to start data transmission from first to second transceivers. Circuit elements responsible for transmitting data remain deenergized until user touches the second transceiver touch electrode to save energy during non-operation and prolong first transceiver battery life.

Abstract: The meal advice system of the present invention provides appropriate next meals in consideration of the previous meal taken by a dieter. The previous meals are transmitted as an image data from a dieter terminal to a server which responds to relay the image data to an analyst terminal for requesting the analysis of foods contained in the meal. The analysis result is transmitted back to the server where nutrient constituents of the analysis result are compared with prescribed nutrient amounts needed for the dieter to select a collection of the next meals containing foods compensating the deficient nutrient amounts. Then, a proposed menu containing the collection of the meals is transmitted to the dieter and/or a meal assistant who serves the meal to the dieter.

Abstract: A communication system includes a transmitting device, a receiving device having receiving device for receiving data transmitted by said transmitting device and managing device for managing received data, detecting device for detecting whether or not communication of data between said transmitting device and said receiving device is permitted, said detecting device being provided with at least one of said transmitting device and said receiving device, wherein when said detecting device detects a fact that communication of data is permitted, said transmitting device starts transmitting data to said receiving device.