Adaptation of computer to communication operation

• US 4,839,802 A
• Filed: 11/19/1986
• Issued: 06/13/1989
• Est. Priority Date: 11/19/1986
• Status: Expired due to Fees

• Current Assignee: Extel Corporation
• Original Assignee: Extel Corporation
• Inventors: Wonak, Daniel C., Miller, William A. II, Butz, Steven J.
• Primary Examiner(s): Chan, Eddie P.
• Assistant Examiner(s): Napiorkowski, Maria
• Application Number:
  US06/932,472
• Time in Patent Office: 937 Days
• Field of Search: 364/200 MS File, 364/900 MS File
• US Class Current: 710/14
• CPC Class Codes: G06F 13/124 where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine

Abstract

A communication adapter for a personal computer or computer terminal is interposed between the computer process unit and its accessory units, such as a keyboard, a printer and a display monitor; the adapter includes a data memory for storing data and actuation signals from the keyboard, from the process unit, and from a communication port on the adapter, together with transmission logic circuits for transmitting data from the memory through the communication port, and accessory logic circuits for supplying data from the memory to the printer and to the monitor. The adapter further includes a microprocessor with a program memory, responsive to signals from the keyboard, that actuates the adapter between a computer mode of operation in which the computer process unit is effectively connected to the accessory units for operation of the computer as if the adapter were not present, and a communication mode in which the adapter and the accessory units function as a telecommunication transceiver independent of the computer process unit. In the computer mode the adapter remains active as an automated telecommunication transceiver, recording incoming data from its communication port in the data memory and transmitting previously recorded data from the memory.

Claims

1. A communication adapter for adapting a computer for operation as an intelligent telecommunication transceiver without modification of the hardware or software of the computer, the computer comprising a computer process unit, including a data store, connected to computer accessory units including a keyboard, a monitor, and a printer, the communication adapter comprising:

computer port means, including a keyboard port, a monitor port, and a printer port, for connecting the adapter to the computer process unit;

accessory port means, including a keyboard port, a monitor port, and a printer port, for connecting the adapter to the computer accessory units;

a communication port for connecting the adapter to a telecommunication circuit;

data storage means for storing data signals and actuation signals received through the accessory keyboard port, the communication port, and one of the computer printer and monitor ports;

transmission logic means for supplying data signals from the data storage means to the communication port;

accessory logic means for supplying data signals from the data storage means to the accessory printer and monitor ports;

program storage means for storing operating programs for the communication adapter; and

microprocessor control means operatively interconnected with all of the port means, both of the logic means, and both of the storage means, for controlling operation of the adapter in two basic modes;

A. a computer mode in which data is interchanged freely between the accessory units and the computer process unit so that the computer process unit and the computer accessory units all function as if the adapter were not present, and

B. a communication mode in which data is interchanged freely between the computer accessory units and the communication port so that the adapter and the computer accessory units function as if the computer process unit were not present;

the data storage means and the logic means remaining active to receive and store signals from the communication port and to transmit pre-recorded signals from the data storage means through the communication port when the adapter is in its computer mode of operation; and

the control means being responsive to signals from the keyboard, in both modes, for actuation of the adapter between its computer and communication modes of operation.

2. A communication adapter for a computer, according to claim 1, and further comprising:

buffer storage means, connected to the accessory keyboard port, for storing all signals from the keyboard for a very brief interval not readily perceptible to a user, in both modes of operation.

3. A communication adapter for a computer, according to claim 2, in which the data storage means comprises a print-spooler for the accessory printer port in both modes of adapter operation.

4. A comunication adapter for a computer, according to claim 3, in which the data storage means records data signals in a plurality of separately identifiable directories including directions for local messages, transmitted messages, received messages, and transmit queue messages.

5. A communication adapter for a computer, according to claim 4, in which the program storage means includes an editing program for editing of messages recorded in the local messages directory.

6. A communication adapter for a computer, according to claim 5, in which the program storage means includes a plurality of recorded auto sequences for controlling operation of the adapter in its communication mode, and in which the editing program is effective for editing the auto sequences.

7. A communication adapter for a computer, according to claim 4, in which all messages in the local, transmitted, and received directories are identified in a first sequence and all messages in the transmit queue directory are identified in a second sequence, with both sequences determined by the program storage means.

8. A communication adapter for a computer, according to claim 1, in which the program storage means includes stored programs for transferring data from the computer process unit to the data storage means and from the data storage means to the computer process unit.

9. A communication adapter for a computer, according to claim 8, in which data stored in the data store of the computer process unit is transferred to the adapter data storage means by effective connection of the computer printer port to the data storage means in a transfer modification of the computer mode of operation.

10. A communication adapter for a computer, according to claim 9, in which the transfer modification of the computer mode of operation is initiated manually through the keyboard.

11. A communication adapter for a computer, according to claim 9, in which the transfer modification of the computer mode of operation is initiated by control signals recorded in a header to the message to be transferred.

12. A communication adapter for a computer, according to claim 2, in which the control means is responsive to a predetermined sequential combination of keyboard signals, when the adapter is in its computer mode, to effect a changeover to the communication mode.

13. A communication adapter for a computer, according to claim 12, in which said combination of keyboard signals is ALT and PRTSC.

14. A communication adapter for a computer, according to claim 12, in which a preselected sequential combination of keyboard signals effects a changeover from the communication mode to the computer mode.

15. A communication adapter for a computer, according to claim 14, in which the two combinations of keyboard signals are the same.

16. A communication adapter for a computer, according to claim 15, in which the data storage means comprises a print-spooler for the accessory printer port in both modes of adapter operation.

17. A communication adapter for a computer, according to claim 1, in which the data storage means comprises a print-spooler for the accessory printer port in both modes of adapter operation.

18. A communication adapter for a computer, according to claim 17, in which the program storage means includes an editing program for editing of messages recorded in a local messages directory.

19. A communication adapter for a computer, according to claim 18, in which the program storage means includes a plurality of recorded auto sequences for controlling operation of the adapter in its communication mode, and in which the editing program is effective for editing the auto sequences.

20. A communication adapter for a computer, according to claim 8, and further comprising:

buffer storage means, connected to the accessory keyboard port, for storing all signals from the keyboard for a very brief interval not readily perceptible to a user, in both modes of operation.

21. A communication adapter for a computer, according to claim 20, in which the data storage means comprises a print-spooler for the accessory printer port in both modes of adapter operation.