Telephonic information communication method and apparatus

• US 5,369,691 A
• Filed: 03/04/1993
• Issued: 11/29/1994
• Est. Priority Date: 03/04/1993
• Status: Expired due to Fees

• Current Assignee: Charles J. Cain
• Original Assignee: Utilex Incorporated
• Inventors: Genova, Ronald R., Cain, Charles J.
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): Woo, Stella L.
• Application Number:
  US08/027,285
• Time in Patent Office: 635 Days
• Field of Search: 379/107, 379/106, 379/102, 379/104, 379/105, 379/98, 379/97, 379/93, 340/870.02
• US Class Current: 379/106.03
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data

Abstract

An apparatus for communicating information between customer locations and remote locations desiring the information exchange which allows the communications to occur over existing communications lines without interfering with the existing uses of those lines. The apparatus includes an acquisition device located at the customer'"'"'s location, and a signal shifting means located at a local distribution point in relatively close proximity to the customer'"'"'s location which receives an out-of-band signal from the customer location and converts it to an in-band signal transmitted over the greater distance to the remote location desiring the information exchange using normal telephone transmission through telephone company switch equipment. Also disclosed are methods for customer information exchange, in particular utility meter information, over existing communication lines, in particular telephone lines wherein the signals are transmitted out of band to a local distribution point then retransmitted to in-band signals for further transmission.

Claims

1. A method for automated utility meter reading over a telephone line of a customer, comprising:

(a) electrically encoding one or more of a customer'"'"'s utility meter readings;

(b) transmitting the electrically encoded readings onto the customer'"'"'s telephone line as an out-of-band frequency reading signal which is operatively transmitted concurrently over the customer'"'"'s telephone line between the customer and the local distribution point with or without any customer voice communications;

(c) performing steps (a) and (b) one or more times;

(d) receiving selected out-of-band frequency readings at a local distribution point;

(e) converting the received selected out-of-band frequency readings to data readings at the local distribution point;

(f) selectively re-transmitting the data readings as in-band frequency reading signals over a telephone link connecting through a telephone company central office switch; and

(g) acquiring the in-band frequency reading signals at one or more remote locations through the telephone company central office switch to provide the customer'"'"'s utility meter readings automatically to the remote locations.

2. A method according to claim 1, wherein step (f) of selectively re-transmitting the readings includes initiating re-transmitting by transmitting a request from a remote location over the link connecting through the telephone company central office switch.

3. A method according to claim 1, wherein said step (b) of transmitting the electrically encoded readings onto the customer'"'"'s telephone line includes initiating transmitting responsive to an out-of-band frequency request transmitted from the local distribution point over the customer'"'"'s telephone line between the customer and the local distribution point.

4. A method according to claim 2, wherein said step (f) of selectively re-transmitting includes selecting which of the customer'"'"'s utility meter readings to provide to the requesting remote location responsive to the request from the remote location.

5. A method according to claim 2, wherein the request from the remote location also initiates step (c) of repeating the encoding and transmitting of the readings onto the customer'"'"'s telephone line.

6. A method according to claim 1, wherein step (c) of repeating the encoding and transmitting of the readings onto the customer'"'"'s telephone line occurs at predetermined time intervals.

7. A method according to claim 1, wherein step (c) of repeating the encoding and transmitting of the readings onto the customer'"'"'s telephone line occurs continuously.

8. A method according to claim 1 wherein step (d) of receiving selected out-of-band frequency readings and step (e) of converting the received selected out-of-band frequency readings are performed at a local distribution point comprising a telephone company interface box.

9. A method according to claim 1 wherein step (b) of transmitting the electrically encoded readings is performed using an out-of-band frequency of between about 20 kHz and about 100 kHz.

10. A method according to claim 1 wherein step (b) of transmitting the electrically encoded readings includes modulating the utility meter readings and wherein step (e) of converting the received selected out-of-band frequency readings includes demodulating the utility meter readings.

11. A method for automated reading of one or more types of utility meters of a plurality of customers using the customers'"'"' telephone lines, comprising:

(a) electrically encoding one or more of each customer'"'"'s utility meter readings;

(b) transmitting each customer'"'"'s electrically encoded readings onto the customer'"'"'s telephone line as an out-of-band frequency reading signal which is operatively transmitted concurrently over the customer'"'"'s telephone line between the customer and the local distribution point with or without any customer voice communications;

(c) repeating steps (a) and (b) one or more times;

(d) receiving the out-of-band frequency readings from selected customers at a local distribution point;

(e) converting the received out-of-band frequency readings from selected customers to data readings at the local distribution point;

(f) grouping the data readings from selected customers to provide a data reading packet;

(g) selectively re-transmitting the data reading packet as an in-band frequency reading signal over a telephone link connecting through a telephone company central office switch; and

(h) acquiring the in-band frequency reading signal at one or more remote locations through the telephone company central office switch to provide the customers'"'"' utility meter readings automatically to the remote locations.

12. A method according to claim 11, wherein said step (g) of selectively re-transmitting includes initiating re-transmitting by transmitting a request from a remote location over the link connecting through the telephone company central office switch.

13. A method according to claim 12, wherein said step (f) of grouping includes selecting which utility meter readings from which customers to provide to the requesting remote location responsive to the request from the remote location.

14. A method according to claim 12, wherein the request from the remote location also initiates step (c) of repeating the encoding and transmitting of the readings onto the customers'"'"' telephone line.

15. A method according to claim 11, wherein step (c) of repeating the encoding and transmitting of the readings onto the customer'"'"'s telephone line occurs at predetermined time intervals.

16. A method according to claim 11, wherein step (c) of repeating the encoding and transmitting of the readings onto the customer'"'"'s telephone line occurs continuously.

17. A method according to claim 11, wherein step (d) of receiving selected out-of-band frequency readings and step (e) of converting the received selected out-of-band frequency readings are performed at a local distribution point comprising a telephone company interface box.

18. A method according to claim 12, wherein said step (f) of grouping comprises selecting the reading from a first type of utility meter from all of the customers to provide a data reading packet including the last reading from the first type of utility meter from all customers having the first type of utility meter.

19. A method according to claim 18, wherein step (d) of receiving selected out-of-band frequency readings, step (e) of converting the received selected out-of-band frequency readings and step (f) of grouping are repeated each time step (a) and step (b) are repeated to provide a data reading packet representing the last reading from step (e) and said step (g) of selectively re-transmitting includes transmitting the data reading packet each time step (d), step (e) and step (f) are repeated to continuously provide to the remote location the last utility meter reading from each of the customers.

24. An automated utility meter reading apparatus according to claim 19 wherein said frequency of said out-of-band electrical signal is between about 20 kHz and about 100 kHz.

25. An automated utility meter reading apparatus according to claim 19 wherein each of said customers'"'"' telephone lines includes a tip and ring line over which said out-of-band electrical signal is transmitted.

20. An apparatus for automated reading of one or more utility meters of each of a plurality of customers using the customers'"'"' telephone lines, comprising:

encoding means operatively associated with one or more of each of said customers'"'"' utility meters for converting said customers'"'"' utility meter readings to an electrical signal;

transmitting means electrically connecting said encoding means to said customers'"'"' telephone lines for converting said electrical signal to an out-of-band electrical signal having a frequency, wherein the frequency of said out-of-band electrical signal is sufficiently offset from customer voice communication frequencies to substantially reduce interference during concurrent transmission of both said out-of-band electrical signal and customer voice communications over said customers'"'"' telephone lines;

scanning means located at a local distribution point for receiving said out-of-band electrical signal from each of said customers'"'"' telephone lines without disrupting customer voice communications, said scanning means having a plurality of input ports and an output port, said input ports being electrically connected to said customers'"'"' telephone lines and said scanning means selectively providing a selected meter reading at said output port;

control means electrically connected to said scanning means for selecting the meter reading to be provided at said output port of said scanning means and for selectively grouping one or more of said selected meter readings from said scanning means as a data reading packet;

re-transmitting means electrically connected to a telephone link connecting through a telephone company central office switch, and responsive to said control means for transmitting said data reading packet as an in-band electrical signal, said in-band electrical signal being transmitted over said telephone link; and

communication means located at a remote location for receiving said in-band electrical signal over said telephone link.

21. An automated utility meter reading apparatus according to claim 20 further including a command means for providing a data request which is transmitted by said communication means over said telephone link connecting through a telephone company central office, wherein said control means initiates said transmission by said re-transmitting means responsive to said request.

22. An automated utility meter reading apparatus according to claim 21 wherein said control means selectively groups said selected meter readings from said scanning means as a data reading packet responsive to said request.

23. An automated utility meter reading apparatus according to claim 20 wherein said local distribution point is a telephone company interface box.

26. An apparatus for automated acquisition of one or more of a customer'"'"'s utility meter readings using the customer'"'"'s telephone line, comprising:

acquisition means electrically connected to the customer'"'"'s telephone line for converting said utility meter readings to an out-of-band electrical signal having a frequency and for transmitting said out-of-band electrical signal over the customer'"'"'s telephone line, wherein the frequency of said out-of-band electrical signal is sufficiently offset from customer voice communication frequencies to substantially reduce interference during concurrent transmission of both said out-of-band electrical signal and customer voice communications over said customer'"'"'s telephone lines; and

signal shifting means located at a local distribution point for converting said out-of-band electrical signal from said customer'"'"'s telephone line to an in-band electrical signal having a frequency within the range of customer voice communications, said in-band electrical signal being configured to be transmitted over a telephone link connecting through a telephone company central office switch to a remote location to thereby provide said customer'"'"'s utility meter readings to said remote location automatically.

27. A method for customer information communication between a customer and a requesting location over existing communication lines, comprising:

(a) transmitting a request for customer information from a requesting location by telephone through a telephone company switch to a local distribution point;

(b) receiving the request for customer information at the local distribution point;

(c) transmitting the request for customer information from the local distribution point to the customer over existing communication lines modulated at a first out-of-band frequency range as an out-of-band frequency request;

(d) receiving the out-of-band frequency request from the local distribution point to provide an information request to the customer;

(e) electrically encoding customer information responsive to the information request to the customer;

(f) transmitting the electrically encoded customer information over the existing communications lines modulated at a second out-of-band frequency range as an out-of-band frequency information reading;

(g) receiving the out-of-band frequency information reading at the local distribution point; and

,

(h) re-transmitting the out-of-band frequency information reading from the local distribution point at in-band-frequencies through a telephone company switch to the requesting location.

28. A method according to claim 27 wherein the existing communication line is a customer telephone line.

29. A method according to claim 27 wherein the existing communication line is a customer cable line.

30. A method according to claim 27 wherein the customer information is a utility meter reading.

31. A method according to claim 27 wherein the customer information is a reading from a demand recorder.

32. A method according to claim 27 wherein the customer information is an alarm reading.

33. A method according to claim 27 wherein the customer information is voltage data.

35. A method according to claim 33 wherein said customer control request comprises a command to control electrical service connection to the customer.

36. A method according to claim 33 wherein said customer control request comprises a command to control telephone service connection to the customer.

34. A method for customer control communication between a customer and a requesting location over existing communication lines, comprising:

(a) transmitting a customer control request from a requesting location by telephone through a telephone company switch to a local distribution point;

(b) receiving the customer control request at the local distribution point;

(c) transmitting the customer control request from the local distribution point to the customer over existing communication lines modulated at a first out-of-band frequency range as an out-of-band frequency request; and

,

(d) receiving the out-of-band frequency request from the local distribution point to provide a control signal to the customer.