Method and apparatus for parallel port interconnection

• US 6,182,145 B1
• Filed: 01/22/1997
• Issued: 01/30/2001
• Est. Priority Date: 11/14/1994
• Status: Expired due to Fees

• Current Assignee: Donald K. Schuman, Jay Lowe
• Original Assignee: Donald K. Schuman, Jay Lowe
• Inventors: Lowe, Jay, Schuman, Donald K.
• Primary Examiner(s): Breene, John
• Assistant Examiner(s): ROBINSON, GRETA LEE
• Application Number:
  US08/787,431
• Time in Patent Office: 1,469 Days
• Field of Search: 395/310, 395/500, 395/309, 395/200.3, 395/200.48, 395/200.57, 395/200.6, 395/200.62, 395/200.67, 395/500.46, 395/500.18, 370/395, 364/240.8, 364/222.2, 710/129, 710/20, 709/237
• US Class Current: 709/237
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices

Abstract

A method and apparatus for parallel communication from a PC to an external device. The apparatus is connected between the PC and the external device. The apparatus is encoded so that its identity can be read by the PC and the external device. The PC then communicates with the external device through the apparatus, informing the external device of the communication mode that the PC uses to communicate. In response, the external device communicates through the apparatus to inform the PC of the communication mode that it uses. Subsequently, the PC transmits information to the apparatus for retransmission to the external device. As a result of the data it has previously obtained from the PC and the external device, the apparatus configures itself so that it can optimize the transmission of information from the PC to the external device. The method is the method of receipt and processing of the data used to optimally configure the apparatus of the invention.

Claims

1. An apparatus for transferring information from a first electronic device to a second electronic device, wherein the first electronic device communicates through a first I/O port according to a first protocol and the second electronic device communicates through a second I/O port according to a second protocol, the apparatus comprising:

a circuit adapted to be connected between the first and second I/O ports, the circuit being adapted to receive signals from the first and second electronic devices through the first and second I/O ports, respectively, and being configurable in response to the signals so that the circuit receives the information according to the first protocol through the first I/O port and transmits the information to the second electronic device through the second I/O port according to the second protocol, wherein the two I/O ports each include means to transmit data information through DATA lines and means to receive status information through STATUS lines, the first protocol defining the form of the data and status information to be transmitted through the DATA lines and received through the STATUS lines, respectively, of the first I/O port and the second protocol defining the form of the data and status information to be transmitted through the DATA lines and received through the STATUS lines, respectively, of the second I/O port, the circuit including first and second subcircuits, the first subcircuit to translate the data information received from the first electronic device through the DATA lines of the first I/O port according to the first protocol and then to transmit the data information through the STATUS lines of the second I/O port according to the second protocol, and the second subcircuit to translate the status information received from the second electronic device through the STATUS lines of the second I/O port according to the second protocol and then to transmit the status information according to the first protocol through the STATUS lines of the first I/O port.

2. An apparatus for transferring information from a first electronic device to a second electronic device, wherein the first electronic device communicates through a first I/O port according to a first protocol and the second electronic device communicates through a second I/O port according to a second protocol, the apparatus comprising:

a circuit adapted to be connected between the first and second I/O ports, the circuit being adapted to receive signals from the first and second electronic devices through the first and second I/O ports, respectively, and being configurable in response to the signals so that the circuit receives the information according to the first protocol through the first I/O port and transmits the information to the second electronic device through the second I/O port according to the second protocol, wherein the two I/O ports each include means to transmit data information through DATA lines, means to transmit control information through CONTROL lines and means to receive status information through STATUS lines, the first protocol defining the form of the data, control and status information to be transmitted through the DATA and CONTROL lines and received through the STATUS lines, respectively, of the first I/O port and the second protocol defining the form of the data, control and status information to be transmitted through the DATA and CONTROL lines and received through the STATUS lines, respectively, of the second I/O port, the circuit including first and second subcircuits, the first subcircuit to translate the control information received from the first electronic device through the first I/O port according to the first protocol to information in a form according to the second protocol and then to transmit the control information according to the second protocol through the STATUS lines of the second I/O port, and the second subcircuit to translate the status information received from the second electronic device through the CONTROL lines of the second I/O port according to the second protocol to information in a form according to the first protocol and then to transmit the status information according to the first protocol through the STATUS lines of the first I/O port.

3. The apparatus of claim 2 wherein the first subcircuit further processes the control information received from the first electronic device through the STATUS lines of the first I/O port according to the first protocol in response to the status information received from the second electronic device through the STATUS lines of the second I/O port according to the second protocol and the second subcircuit further processes the control information received from the second electronic device through the CONTROL lines of the second I/O port according to the second protocol in response to the status information received from the first electronic device through the CONTROL lines of the first I/O port according to the first protocol.