Data terminal with adapter for selectively modifying data transmitted to and from
First Claim
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1. A method for transmitting data between a data terminal (4) and an external device (6) connected thereto, the data terminal comprising:
- an application program (8) that controls the operation of the data terminal and processes the transmitted data,a communications controller (17) that controls the internal data transfer of the data terminal, andat least one communication port (9) and a port controller (11a) controlling said at least one communication port for transmitting data between said data terminal (4) and said external device (6), in which method the transmitted data is processed in the application program (8) and directed through said port controller (11a) and said communication port (9), wherein the improvement comprises the steps of;
carrying out a predefined modification of the transmitted data between the form of data processed by said application program (8) and the form of data processed by said external device (6) in a device controller (18) communicating with said communications controller installed in the data terminal (4), androuting the transmitted data to the device controller, for said predefined modification from said application program (8) through said communications controller (17), and from said port controller (11a) through said communications controller (17).
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Abstract
A data adapter functioning as an intermediary between a data terminal and a digital data transmission network is implemented by using the parts the data terminal usually comprises and by directing their activity by processor commands recorded in the memory of the data terminal.
82 Citations
18 Claims
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1. A method for transmitting data between a data terminal (4) and an external device (6) connected thereto, the data terminal comprising:
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an application program (8) that controls the operation of the data terminal and processes the transmitted data, a communications controller (17) that controls the internal data transfer of the data terminal, and at least one communication port (9) and a port controller (11a) controlling said at least one communication port for transmitting data between said data terminal (4) and said external device (6), in which method the transmitted data is processed in the application program (8) and directed through said port controller (11a) and said communication port (9), wherein the improvement comprises the steps of; carrying out a predefined modification of the transmitted data between the form of data processed by said application program (8) and the form of data processed by said external device (6) in a device controller (18) communicating with said communications controller installed in the data terminal (4), and routing the transmitted data to the device controller, for said predefined modification from said application program (8) through said communications controller (17), and from said port controller (11a) through said communications controller (17). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A data terminal (4) comprising, for transmitting data between the data terminal and an external device (6) connected thereto,
an application program (8) that controls the operation of the data terminal and processes the transmitted data, a communications controller (17) that controls the internal data transfer of the data terminal, and at least one communication port (9) and a port controller (11a) controlling said at least one communication port for transmitting data between said data terminal (4) and said external device (6), wherein the improvement comprises: means for processing the transmitted data into the form of data processed by said application program (8) and the form of data processed by said external device (6), said processing means comprising; a device controller (18) communicating with said communications controller (17) for transmitting data therebetween to be processed in said device controller, and means for routing transmitted data between said device controller (18) and said application program (8), and between said device controller (18) and said port controller (11a), through said communications controller (17). - View Dependent Claims (11, 12, 13, 14, 15)
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16. A device controller (18) for processing transmitted data which is transmitted between an application program (8) controlling the operation of a data terminal (4) and an external device (6) connected to the data terminal, the data terminal comprising:
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a communications controller (17) controlling the internal data transfer of said data terminal, and at least one communication port (9), and a port controller (11a) that controls said at least one communication port, for transmitting data between said data terminal (4) and said external device (6), wherein the improvement comprises said device controller processes the transmitted data into the form of data processed by said application program (8) and the form of data processed by said external device (6), and is arranged in communication with said communications controller (17) for routing transmitted data, between said device controller and said application program (8), and between said device controller and said port controller (11a), through said communications controller (17). - View Dependent Claims (17, 18)
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Specification