System for transmitting and receiving aural information and modulated data

• US 5,187,591 A
• Filed: 01/24/1991
• Issued: 02/16/1993
• Est. Priority Date: 01/24/1991
• Status: Expired due to Term

• Current Assignee: Nortel Networks Limited (Nortel Networks Corporation)
• Original Assignee: Micom Communications Corp. (BCE Incorporated)
• Inventors: Kameya, Andrew M., Wildfeuer, Herbert M., Guy, Kenneth R.
• Primary Examiner(s): BRINICH, STEPHEN M
• Application Number:
  US07/645,113
• Time in Patent Office: 754 Days
• Field of Search: 379/63, 379/90, 379/100, 379/89, 358/425, 358/434
• US Class Current: 358/425
• CPC Class Codes: H04L 27/00 Modulated-carrier systems
• CPC Class Codes: H04M 11/068 using time division multiplex techniques; integrated services digital networks H04Q11/0428
• CPC Class Codes: H04Q 2213/13034 A/D conversion, code compression/expansion
• CPC Class Codes: H04Q 2213/13093 Personal computer, PC
• CPC Class Codes: H04Q 2213/13106 Microprocessor, CPU
• CPC Class Codes: H04Q 2213/13174 Data transmission, file transfer
• CPC Class Codes: H04Q 2213/13199 Modem, modulation
• CPC Class Codes: H04Q 2213/13201 Change-over of service during connection
• CPC Class Codes: H04Q 2213/13292 Time division multiplexing, TDM

Abstract

Modulated data information having an individual one of different baud rates and aural information are converted at a transmitter from analog to digital form. A controller separately identifies the digitized aural and modulated data information and, if modulated data, identifies the baud rate of such modulated data. The aural information is separately transformed. For modulated data, the information is separately processed in accordance with the different baud rates. The individual ones of aural and modulated data are then introduced to a common line for packetizing. The beginning of each packet is labelled to identify whether the packet contains aural information (such as voice or music) or modulated data (such as modem or facsimile), and, if modulated data, the particular baud rate of such information. An individual code identifies the end of each packet. The packetized information is then multiplexed in a common bus with other packetized aural and data information. At a receiver connected to the common bus, the multiplexed information is separated into the different packets. The packetized information representing individual ones of aural information (such as voice or music) and modulated data (such as music or facsimile information) is separated, in accordance with the packet labels, into aural information and modulated data and, if modulated data, is introduced to an individual one of different modulators each operative at an individual one of the different baud rates. The aural information is then transformed substantially to its original form at the transmitter and the modulated data is separately processed in accordance with the different baud rates.

Claims

1. In combination for transmitting modulated data and aural information,

first means for providing modulated data having individual characteristics,

second means for providing aural information,

controller means operative at the position of the first and second means to identify the aural information from the second means and the modulated data from the first means and to identify the characteristics of such modulated data,

third means responsive to the identification from the controller for transforming the aural information and for processing the modulated data in accordance with the characteristics of such modulated data, and

packetizer means for packetizing individual ones of the transformed aural information and the processed modulated data and for labelling the packetized information to identify whether the information is aural or modulated data and, if modulated data, the characteristics of such modulated data.

2. In a combination as set forth in claim 1,

the controller means is operative to identify the aural information by a variable frequency and to identify the modulated data by one of a plurality of constant frequencies and is operative to identify the characteristics of the modulated data.

3. In a combination as set forth in claim 1,

a common line for transmitting the transformed aural information and the processed modulated data,

the packetizer means being connected to the common line for packetizing and labelling individual ones of the transformed aural information and the processed modulated data and for introducing the packetized and labeled information to the common line.

4. In a combination as set forth in claim 3,

fourth means displaced from the first means and the second means for receiving the packetized and labeled aural information and modulated data transmitted through the common line and for restoring the aural information and the modulated data.

5. In a combination as set forth in claim 4,

the modulated data constituting facsimile information having different baud rates,

the third means being operative to process the facsimile information in accordance with the different baud rates of the facsimile information, and

the fourth means being operative to restore the facsimile information in accordance with the different baud rates of the facsimile information.

6. In a combination as set forth in claim 1,

the controller means being operative, without interrupting the operation of the first means or the second means, to identify the aural information from the second means and the modulated data from the first means and to identify the characteristics of the modulated data.

7. In combination for transmitting modulated data and aural information,

first means for providing modulated data and information identifying the characteristics of such modulated data,

second means for providing aural information

controller means responsive to the modulated data and to the voice information for identifying whether the information is aural or modulated data and, if modulated data, the characteristics of such modulated data,

third means operatively coupled to the controller means for transforming the aural information,

fourth means operatively coupled to the controller means for processing the modulated data,

a common line, and

fifth means for providing for a transmission through the common line of the aural information transformed by the third means and the modulated data processed by the fourth means.

8. In a Combination as recited in claim 7,

the fifth means including means for labelling, for transmission through the common line, whether the information being transmitted through the common line is transformed aural information or processed modulated data and, if processed modulated data, the characteristics of such modulated data.

9. In a combination as recited in claim 7,

means disposed at a position displaced from the first and second means and responsive to the transformed aural information and the modulated data passing through the common line for restoring such aural information and modulated data.

10. In a combination as recited in claim 8,

second controller means disposed at a position displaced from the first and second means and responsive to the labelling in the information in the common line for identifying whether the information is aural or modulated data and, if modulated data, the characteristics of such modulated data, and

sixth means including means for processing the information in the common line in accordance with the identification from the labelling as to whether the information is aural or modulated data and, if modulated data, the characteristics of such modulated data.

11. In a combination as set forth in claim 7,

the modulated data constituting facsimile information and the facsimile information having different baud and bit rates,

the controller means being operative to identify the facsimile information and the different baud and bit rates of such facsimile information, and

the labelling means in the fifth means being operative to label the facsimile information and the baud and bit rates of the facsimile information.

12. In a combination as recited in claim 7,

the controller means being responsive to the modulated data and to the aural information, without interrupting the operation of the first and second means, for identifying whether the information is aural or modulated data and, if modulated data, the characteristics of such modulated data.

13. In combination for transmitting facsimile and aural information,

first means for providing facsimile information and for identifying the baud and bit rates at which the facsimile information is provided,

second means for providing aural information,

controller means responsive to the aural information and the facsimile information for identifying between the aural information and the facsimile information and, if facsimile information, the baud and bit rates of the facsimile information without interrupting the operation of the first and second means,

third means operatively coupled to the controller means for transforming the aural information when the aural information is identified by the controller means,

fourth means constructed to process the facsimile information in accordance with the baud and bit rates of the facsimile information when the facsimile information is identified by the controller means, and

fifth means for providing a transmission of the transformed aural information and the processed facsimile information.

14. In a combination as set forth in claim 13,

the transmission means including means for labelling the transmission of the transformed aural information and the processed facsimile information to identify whether the transmission is aural or facsimile information and, if facsimile, the baud and bit rates of such facsimile information.

15. In a combination as set forth in claim 13,

a common line,

the transmission means including packetizing means for producing time-spaced packets of the transformed aural information and the processed facsimile information for transmission through the common line,

the packetizing means including means for labelling the beginning of each of the time-spaced packets to identify whether the packet provides aural information or facsimile information and, if facsimile information, the baud and bit rates of such facsimile information and for identifying the end of each packet.

16. In a combination as set forth in claim 15,

the packetizer means constituting a first packetizer means,

there being at least another source of aural information or modulated data and another packetizer means for producing time-spaced packets of such aural information and modulated data, and

multiplexer means operative to multiplex between the time-spaced packets from the first packetizer means and the other packetizer means.

17. In a combination as set forth in claim 13,

sixth means displaced from the transmission means and responsive to the transmission of the transformed aural information and the processed facsimile information, for identifying the encoded transmitted information, and

seventh means operatively coupled to the sixth means for decoding the encoded information identified by such last mentioned means.

18. In a combination as set forth in claim 14,

sixth means displaced from the fifth means and responsive to the labelling in the transmitted information for identifying whether the transmitted information is aural or facsimile and, if facsimile, the baud and bit rates of such facsimile information, and

seventh means operatively coupled to the sixth means for restoring the facsimile information provided by the first means and the aural information provided by the second means.

19. In combination at a receiver for responding to aural information and modulated data transmitted on a common line where the information is in packets and the packets are labelled to represent aural information or modulated data and, if modulated data, to represent the characteristics of such modulated data and where the aural information has been transformed and the modulated data has been processed,

first means for depacketizing the packetized information,

second means for detecting the labelling of the depacketized information to identify whether the depacketized information is aural information or modulated data and, if modulated data, the characteristics of such modulated data,

third means for operating upon the transformed aural information to recover the aural information before transformation,

fourth means for operating upon the processed modulated data to recover the modulated data before processing, and

fifth means operatively coupled to the second means for activating the individual one of the third means and the fourth means in accordance with the detection of the labelling by the second means to obtain a recovery of the voice information and the modulated data.

20. In a combination as set forth in claim 19,

the aural information and the modulated data being converted from an analog form to a digital form before transmission, and

means at the receiver for restoring the decoded aural information and the modulated data from the digital form to the analog form.

21. In a combination as set forth in claim 19,

the modulated data constituting facsimile information and the facsimile information having different baud and bit rates and the labelling identifying the different baud and bit rates of the facsimile information, and

the fourth means being responsive to the different baud and bit rates of the facsimile information to recover the facsimile information.

22. In a combination as set forth in claim 21,

the aural and the facsimile information being converted from an analog form to a digital form before transmission, and

means at the receiver for restoring the recovered aural and facsimile information from the digital form to the analog form.

23. In combination,

first means for selectively providing aural information and modulated data and, if modulated data, the characteristics of such modulated data,

controller means responsive to the aural information and modulated data for separating the aural information and modulated data and, if modulated data, for identifying the characteristics of such modulated data,

second means operatively coupled to the controller means for transforming the aural information,

third means operatively coupled to the controller means for processing the modulated data in accordance with the characteristics of such modulated data,

a common line, and

fourth means in the common line for labelling the transformed aural information and the processed modulated data to identify whether the information is aural information or modulated data and, if modulated data, to identify the characteristics of the modulated data.

24. In a combination as set forth in claim 23,

the modulated data constituting facsimile information having different baud and bit rates,

the controller means for the facsimile information including means for identifying the different baud and bit rates of the facsimile information, and

the third means processing the facsimile information in accordance with the different baud and bit rates of the facsimile information.

25. In a combination as set forth in claim 23,

the fourth means including fifth means for producing time-spaced packets of the aural information and modulated data and for labelling whether the information in each packet is aural information or modulated data and, if modulated data, the characteristics of such modulated data.

26. In a combination as set forth in claim 25,

sixth means for providing other aural information and modulated data and for packetizing such information into time-spaced packets, and

seventh means for multiplexing the packets of the serial information and modulated data from the fifth means and the packets of the aural information o modulated data from the sixth means.

27. In a combination as set forth in claim 26,

means responsive to the labelled aural information and modulated data for separating the aural information and the modulated data in accordance with such labelling and, if modulated data, for separating the modulated data in accordance with the characteristics of the modulated data, and

means for separately transforming the aural information to recover the voice information and for processing the modulated data to recover the modulated data.

28. In a combination as set forth in claim 24,

fifth means responsive to the labeled information in the common line for identifying, in accordance with the labelling, the aural information and the modulated data and, if modulated data, the characteristics of the modulated data,

sixth means responsive to such identification for separately transforming the aural information to recover the voice information, and

seventh means responsive to such identification for separately processing the modulated data in accordance with the characteristics of such modulated data to recover such modulated data.

29. In a combination as set forth in claim 25, means for depacketizing the packets of aural information and modulated data,

means responsive to the labelled information in the common line for identifying, in accordance with the labelling, the aural information and the modulated data and, if modulated data, the characteristics of the modulated data,

means responsive to such identification for separately transforming the aural information in the common line to recover the aural information, and

means responsive to such identification for separately processing the modulated data in the common line in accordance with the characteristics of such modulated data to recover such modulated data.

30. In a combination as set forth in claim 28,

the modulated data constituting facsimile information and the characteristics of the modulated data constituting different baud and bit rates,

the controller means being operative to identify whether the information is aural information or facsimile and, if facsimile, to identify the different baud and bit rates of such facsimile information,

the fourth means being operative to label the facsimile information in accordance with the baud and bit rates of such facsimile information,

the sixth means being operative to identify the facsimile information in accordance with the baud and bit rates of the facsimile information, and

the seventh means being operative to process the facsimile information in accordance with the baud and bit rates of the facsimile information.