Television/telephone system with automatic dialing

• US 4,456,925 A
• Filed: 10/04/1982
• Issued: 06/26/1984
• Est. Priority Date: 10/04/1982
• Status: Expired due to Term

• Current Assignee: Zenith Radio Corporation
• Original Assignee: Zenith Radio Corporation
• Inventors: Zato, Thomas J., Templin, Frank C., Skerlos, Peter C.
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US06/432,464
• Time in Patent Office: 631 Days
• Field of Search: 358/85, 358/192.1, 358/194.1, 179/2 TV, 364/514, 455/603, 455/344
• US Class Current: 348/552
• CPC Class Codes: H04M 1/2745 using static electronic memories, e.g. chips
• CPC Class Codes: H04M 1/27467 Methods of retrieving data
• CPC Class Codes: H04M 1/27495 implemented by means of discrete electronic components, i.e. neither programmable nor microprocessor-controlled H04M1/27457-H04M1/2749 take precedence
• CPC Class Codes: H04M 11/00 Telephonic communication systems specially adapted for combination with other electrical systems

Abstract

A television receiver incorporating telephone interface circuitry permitting the viewer to remotely place outgoing calls by recalling a selected number from memory is disclosed. An infrared link is used for remotely answering incoming calls, initiating outgoing calls and programming a nonvolatile memory with a plurality of preferred telephone numbers for future use. The nonvolatile memory circuit is accessed by means of a microcomputer in response to user-initiated, remotely generated commands. The television receiver'"'"'s display performs a user interactive function in displaying television/telephone mode operation information, the contents of user-accessed locations in the nonvolatile memory and the telephone number being stored in memory during the programming mode of operation. The microcomputer controls not only the telephone mode of operation of the system, but also television operation in generating digital tune words in response to a channel number entry and providing these tune words to an indirect frequency synthesis type of television receiver tuner. The contents of the nonvolatile memory may be updated, or changed, as desired by user selection of appropriate controls followed by entry of the new telephone number which is presented on the video display as it is entered for user verification. The video display is then cleared upon return to the television mode of operation or upon television receiver turn-off.

Claims

1. In a television/telephone system for receiving a transmitted composite video signal having a video component and an audio component in a first mode of operation, said television receiver including a video display, audio signal processing circuitry including audio amplifier-speaker means and a tuner for selectively tuning said television receiver from a currently tuned channel to a desired channel, and for communicating by telephone in a second mode of operation wherein audio communication by means of a telephone line coupled to said television/telephone system may be initiated or responded to with incoming audio signals provided to said audio signal processing circuitry and audio amplifier-speaker means and outgoing audio signals provided to said telephone line by a microphone means responsive to acoustic signals provided thereto, an automatic telephone dialing system comprising:

remotely located mode selection means responsive to user inputs for generating a mode control signal representing said second mode of operation of said television/telephone system;

first remotely located control means responsive to said mode selection means and having a plurality of selectable keys for generating a first plurality of control signals representing channel numbers in said first mode of operation and a second plurality of control signals representing alphanumeric telephone number characters in said second mode of operation;

nonvolatile memory means having a plurality of accessible storage locations, each one capable of storing for later recall said channel numbers and said alphanumeric telephone number characters;

signal processing means responsive to said first and second plurality of control signals and coupled to said telephone line, said tuner and said nonvolatile memory means for generating and providing to said nonvolatile memory means for storage therein digitial tune words representing the channel number of a selected channel and digital dialing words representing a selected telephone number in said first and second modes of operation, respectively; and

second remotely located control means for generating storage and recall commands and providing said commands to said signal processing means for respectively storing in and recalling from said nonvolatile memory means said digital tune words and said digital dialing words and providing said words respectively to said tuner and said telephone line.

2. The system of claim 1 wherein said signal processing means includes a microcomputer having a volatile memory for the temporary storage of said digital tune and dialing words therein prior to storage in and following recall from said nonvolatile memory means.

3. The system of claim 2 wherein said control signals provided to said microcomuter are binary in nature and said microcomputer includes:

counting means responsive to said control signals for counting the number of binary signals received from said first remotely located control means;

program memory means including a plurality of previously stored sequences of binary instructions for controlling said counting means;

central processing means coupled to said counting means and to said program memory means for recalling therefrom a predetermined sequence of stored binary signals for activating said counting means and for receiving from said counting means binary signals representing one of said first or second plurality of control signals corresponding respectively to channel numbers and alphanumeric telephone number characters;

clock pulse generating means coupled to said counting means and said central processing means for providing clock pulses thereto for controlling the transfer of said control signals from said counting means to said central processing means;

data memory means connected to said central processing means for temporarily storing said control signals received therefrom and for storing a plurality of binary signal codes representing said second mode of operation and alphanumeric telephone number characters, said data memory means providing said received control signals and said stored binary signal codes to said central processing means for comparison therein;

latch means coupled to said central processing means for receiving input signals in response to said comparisons and for providing output signals in response thereto; and

switching circuit means coupling said signal processing means to said telephone line and responsive to said output signals for selectively coupling said television receiver audio signal processing circuitry, said audio amplifier-speaker means and said microphone means to said telephone line for initiating a telephone call.

4. The system of claim 1 further comprising switching means coupling said signal processing means to said telephone line, said switching means responsive to said digital dialing words recalled from said nonvolatile memory means for initiating a telephone call.

5. The system of claim 1 further including character generating means coupling said signal processing means and said video display, said character generator means responsive to said digital dialing words for displaying a telephone number recalled from said nonvolatile memory means on said video display.

6. The system of claim 1 wherein said nonvolatile memory means comprises an electrically alterable metal-nitride-oxide-semiconductor memory element.

7. The system of claim 1 wherein said first and second control signals and said mode control signal are pulse code modulated and transmitted in the infrared frequency spectrum.

8. The system of claim 1 wherein the audio signal processing circuitry and said audio amplifier-speaker means are disabled during the dialing of the recalled digital dialing words in preventing the transmission by said audio amplifier-speaker means of break-and-make mechanical dialing sounds.

9. The system of claim 1 wherein said digital dialing words are stored in said nonvolatile memory means in said first mode of operation of the television/telephone system.

10. The system of claim 1 further including third remotely located control means for generating a plurality of addressing commands each representing a predetermined storage location in said nonvolatile memory means for storing in or recalling from one of said predetermined storage locations digital dialing words representing a selected telephone number.

11. The system of claim 10 wherein said third remotely located control means includes a plurality of selectable keys each representing one of said accessible storage locations.

12. In a television receiver including a video display for presenting a received composite video signal thereon, audio amplifier-speaker means for generating an audio output in response to a received audio component of said composite video signal and a tuner including a microcomputer responsive to remotely generated tune signals for tuning said television receiver to a designated television channel and for presenting on said video display a selected channel number in a first mode of operation of said television receiver, said television receiver further including telephone interface means for coupling said television receiver to a telephone line in a second mode of operation wherein telephone communication may be initiated by placing an outgoing call or responded to by answering an incoming call, a method for automatically dialing a designated telephone number comprising:

remotely generating a function control signal;

providing said function control signal to said microcomputer for controlling said video display in presenting user-directed instructions thereon;

remotely generating binary signals representing the alphanumeric characters of said designated telephone number;

providing said binary signals to said microcomputer for processing therein;

transferring said binary signals from said microcomputer to a nonvolatile memory means for storage therein in accordance with said instructions;

remotely generating an operating mode control signal;

providing said operating mode control signal to said microcomputer for operating said television receiver in said second mode of operation;

reading said binary signals from said nonvolatile memory means; and

providing said binary signals to said telephone line in automatically dialing said designated telephone number.

13. A method as in claim 12 further including presenting the alphanumeric characters of said designated telephone number on the video display of said television receiver during the storing in and recall from said nonvolatile memory means of said binary signals.

14. A method as in claim 12 wherein said nonvolatile memory means includes a plurality of storage locations for storing a plurality of binary signals representing the alphanumeric characters of a plurality of designated telephone numbers, said method further including designating the storage location in said nonvolatile memory into which the binary signals representing the alphanumeric characters of one of said plurality of designated telephone numbers is to be stored.

15. A method as in claim 14 further including designating the storage location in said nonvolatile memory from which the binary signals representing the alphanumeric characters of one of said plurality of designated telephone numbers is to be read.

16. A method as in claim 15 wherein said user-directed instructions presented on said video display relate to the storage location in said nonvolatile memory wherein said plurality of binary signals representing the alphanumeric characters of said designated telephone number are to be stored.

17. A method as in claim 12 further including muting said audio amplifier-speaker means when said binary signals are read from said nonvolatile memory means and provided to said telephone line for preventing the transmission by said audio amplifier-speaker means of break-and-make mechanical dialing sounds.

18. A method as in claim 12 wherein said remotely generated function control, binary and operating mode control signals are generated and provided to said microcomputer in the infrared frequency spectrum.