Telegraphy – Systems – Automatic
Patent
1987-09-08
1989-05-30
Schreyer, Stafford D.
Telegraphy
Systems
Automatic
178 2R, 178 3, 364200, H04G 1308
Patent
active
048353469
ABSTRACT:
A device for transmitting data between a transmitter provided with standard software adapted to a serial interface and a standard receiver provided with a serial interface is presented. The device includes a serial interface simulator which replaces the serial interface of the transmitter, a memory which stores data received by the serial interface simulator, and an interface which transmits to the receiver the data stored in the memory. The serial interface simulator includes a data transmission register, a data reception register, a first buffer register, a second buffer register, a bus, a simulation control register and a simulation state register.
The standard software places data in the data transmission register and receives data from the data reception register. Data placed in the data transmission register is not immediately serially transmitted to the receiver, but is transferred to the first buffer register from where it is transferred to the memory. The data stored in the memory is later transmitted through the interface to the receiver. Data placed in the data reception register, and data in the simulation control register and simulation state register are manipulated in such a way that the standard software places data in the data transmission register at a high data transfer rate.
REFERENCES:
patent: 4736074 (1988-04-01), Sendlinger et al.
IBM Technical Disclosure Bulletin, vol. 18, No. 4, Sep. 1975, Host Interface Communications and Control Unit Emulation, (M. P. Loughlin and J. R. Maresca), p. 1251.
IBM Technical Disclosure Bulletin, vol. 19, No. 10, Mar. 1977, Enhanced I/O Subsystem Using a Device Engine, (D. F. Bantz, L. A. Belady and C. J. Evangelisti), p. 4043.
IBM Technical Disclosure Bulletin, vol 9, No. 170, (p. 373) (1893) Jul. 16, 1985, Data Transfer Circuit, (Hiroshi Nishimatsu).
Laugenie Jean-Marc
Setton Joel
Haggard Alan H.
Hewlett--Packard Company
Schreyer Stafford D.
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