Electrical teaching system

In a electrical teaching system employing a plurality of student transceivers and a central console providing lesson source signals transmitted to said students, an improved system for monitoring a student's progress comprising:

• said console including a code generating and code transmitting means for transmitting a plurality of student identification codes on a single carrier frequency and a console receiver tuned to a frequency common to transmitters in all student transceivers, and said student transceivers each including decoding means responsive to a unique code for actuating a transmitter included in said student transceiver to transmit information to said console receiver only when a code uniquely associated with a student transceiver is transmitted from said console, wherein said console includes an intercom transmitter and further including an intercom control circuit coupled to said code transmitting means for modifying the code transmitted thereby and wherein said student transceiver includes intercom detecting means responsive to the modified code and a control circuit coupled to said detecting means for tuning the receiver of said student transceiver to a frequency for reception of instructor information from said intercom transmitter.

For use in a wireless electrical teaching system which includes an instructor console providing transmitted lesson source information, a monitor receiver permitting the instructor to monitor a student's progress, and a code transmitter for transmitting a selected one of a plurality of student I.D. codes on a common carrier frequency, an improved student transceiver comprising:

• a headset including earphones and a microphone, a tuner for selecting a frequency for a desired transmitted lesson source, selectively activated transmitter means coupled to said microphone for transmitting student voice information, a code receiver for receiving all student I.D. codes, a decoder circuit coupled to said code receiver for developing a control signal in response to a predetermined student I.D. code, and a transmitter control circuit coupled to said decoder circuit and to said transmitter means for actuating said transmitter means when a predetermined code is received wherein said tuner further includes means for tuning to an intercom frequency and said transceiver includes an intercom control circuit coupled to said decoder circuit and to said tuning means and responsive to an intercom code bit to tune said student transceiver to an intercom frequency upon receipt of any intercom bit by said tuner.

For use in a wireless electrical teaching system which includes a plurality of student transceiver units each having decoding means responsive to a predetermined student I.D. code and received on a frequency common to all student transceivers for actuating a student transmitter for permitting monitoring of a student's progress, an improved instructor's console comprising:

• code generating means actuated by an instructor to provide a serial student I.D. code comprising a series of binary bits uniquely identifying a selected student said generating means further including means for selectively adding an intercom bit to a predetermined location with respect to said serial student I.D. code for actuating the student receiver to receive information transmitted by said intercom transmitting means,
• code transmitting means coupled to said code generating means for transmitting on a frequency common to all codes said student I. D. code, and
• instructor intercom transmitting means for transmitting on a single frequency information from an instructor to be received by a receiver portion of the student transceiver.