Abstract: The credit card information management system checks the creditability of a credit card intended to be used for purchase of goods or service by using the card information owned by member stores of credit companies. A host computer of the card management center outputs information regarding the validity or invalidity of a credit card of a customer member of a credit company as card information, a transmission facility wirelessly transmits digital data of the card information. A receiving facility of a member store receives radio signals of the card information and checks whether or not there is any missing of data. If any missing occurs, a transfer of the missed data is requested to the host computer.

Abstract: A system for managing sales of goods for vending machines includes a goods control center, a plurality of vending machines, and terminal computers equipped in the respective vending machines. The goods control center includes a host computer for preparing digital data signals as control instructions, and a frequency moderation sub-carrier broadcasting facility as a transmission facility for outputting the digital data signals. Each vending machine has a receiving facility for receiving the digital data signals from the goods control center, and a responding facility. Each terminal computer receives the digital data signals and selectively extracts the digital data as the control instructions necessary for the vending machine to thereby store the digital data necessary for the vending machine in a memory.

Abstract: A multibroadcast receiver for pseudo bidirectional communications between a broadcasting station and an audience via ordinary radio wave mass media such as television and radio. The multibroadcast receiver includes a stereo receiving section for receiving broadcast wave, an acquisition section for acquiring program-content data from the broadcast wave, a control section, an insertion section for the insertion of a card, a printing section for printing necessary data on the card, a reading section for reading data on the card, a key-input section, a storage section, and a communication section for receiving and sending to a remote terminal, data from the control section. Data externally input by an audience through the key-input section, in accordance with an invitation from a broadcast program, program-content data, and audience data, are transmitted to the remote terminal via the communication section.

Abstract: A multibroadcast receiver 1 comprises a stereo receiving unit 4, an extractor 7 for taking out information about an identification code related to the contents of a broadcasting program and a necessary character code or the like from a data signal in a broadcasting radio wave, a print unit 10 for recording the information extracted from the extractor 7 thereon, an insert portion 12 for inserting a card 11 therethrough, a reader 13 for reading a predetermined identification code recorded on the card 11 inserted in the insert portion 12, and a controller 8 for checking the identification code on the card 11 against the identification code extracted from the extractor 7 and recording by the print unit 10 the necessary information taken out of the data signal on the card 11 in accordance with the result of check. Further, the controller 8 checks data inputted through a selectively-provided key input unit 16 against predetermined data taken out from the extractor 7.