RICHARD MAX BANGERTER
Pilots at Bison Vw Cv, Riverton, UT

4667065, May 19, 1987

Feb 28, 1985

6/706959

Richard M. Bangerter - South Jordan UT

H04M 100

379351

A novel apparatus and method for electronically determining whether audio signals which are present in an electrical audio device (for example, a telephone) are voice signals or, on the other hand, some type of supervisory or system-generated signals. Audio signal lines are connected to an audio detector and a digitizer. The audio detector provides an output which indicates the presence of an audio signal. The digitizer transforms any audio signal into a series of high and low level signals in some manner. The outputs from the audio detector and the digitizer are then provided to a central processing unit which is used to analyze the data. If an audio signal is detected and the digitized audio signal is determined to have a regular periodic pattern, it is presumed that the audio signal is some type of system-generated supervisory tone. If, on the other hand, the digitized audio signal does not have a regular periodic pattern, it is presumed that the audio signal is a voice signal. Accordingly, upon detecting an irregular audio signal, the central processing unit produces an output signal which can be detected by associated circuitry as indicating that voice signals are present.

4492820, Jan 8, 1985

Oct 24, 1980

6/200368

Lon H. Kennard - Heber UT
Duane O. Hall - Sandy UT
Richard M. Bangerter - South Jordan UT

Salt Lake Communications, Inc. - Salt Lake City UT

H04M 1100

179 5P

An automatic telephone message device for transmitting recorded messages to predetermined telephone numbers. The device is connected to the telephone jack and AC power source of the user's telephone, and is also connected to a standard tape recording system. One or more messages are recorded by the user on the tape recorder. The microprocessor controlled circuitry of this device provides memory space for convenient storage and modification of several telephone numbers. This device is responsive to manual, timed automatic or remotely generated activation signals for transmitting the recorded message to parties answering at the specified telephone numbers. An additional audible alarm may be set to sound at predetermined times, and if a manual switch is not closed within a specified time thereafter, the device calls the selected telephone numbers and transmits the recorded message. In response to remote transmitter activation or lack of response to the audible alarm, a tone is transmitted in addition to the message indicating that the user is probably in the vicinity of the device. All specified numbers are redialed until the device senses that they have been answered, or until a specified maximum number of dialing attempts have been made.