Data processing apparatus connectable to a LAN

Details Data processing apparatus connectable to a LAN Data processing apparatus connectable to a LAN

1994-12-09

2001-10-09

Lee, Cheukfan (Department: 2622)

Facsimile and static presentation processing

Facsimile

Facsimile relay system

C358S440000, C358S442000, C358S444000

Reexamination Certificate

active

06301016

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a data processing apparatus such as a facsimile apparatus having the capability of data communication. More particularly, the present invention relates to a data processing apparatus connectable to another apparatus via a LAN (local area network).
2. Description of the Related Art
Some conventional data processing apparatuses such as a facsimile apparatus have the capability of sending an error message to an another apparatus when an error such as a printer error, insufficiency of free memory area of image data memory for storing image data, etc., occurs in the facsimile apparatus. However, a facsimile apparatus of this type suffers from the problem that the receiving operation stops until the apparatus recovers from the error.
Furthermore, in a conventional facsimile apparatus, when the apparatus receives a large amount of data during image data communication, since the decoding rate is slow compared to the line transmission rate, the receiving memory often becomes busy, and action (such as sending an RNR signal) is taken according to a protocol procedure. As a result, the total communication time becomes longer, and in some cases, the communication is terminated before completion. On the other hand, when the facsimile apparatus transmits a large amount of image data, since the reading rate of its scanner is higher than the transmission rate, memory for storing transmission data often becomes busy, and thus the machine must take action such as stopping the scanner operation.
SUMMARY OF THE INVENTION
In view of the above, it is an object of the present invention to provide a data processing apparatus having the capability of accepting data transmitted by another apparatus even when an error occurs in the data processing apparatus.
It is another object of the present invention to provide a data processing apparatus that can continue the transmission/reception of image data and the data storing operation without prolonging the communication time even when memory for storing image data is busy.
It is still another object of the present invention to provide a data processing apparatus having the capability of detecting an error in a LAN when connected to the LAN.
It is another object of the present invention to provide a data processing apparatus having the capability of transferring image data to another data processing apparatus connected to a LAN depending on the status of the data processing apparatus connected to the LAN.
It is further object of the present invention to provide a data processing apparatus having the capability of receiving image data from another apparatus connected to a LAN.
It is another object of the present invention to provide a data processing apparatus that can be controlled by another apparatus connected to a LAN.


REFERENCES:
patent: 5027386 (1991-06-01), Hisano
patent: 5068888 (1991-11-01), Scherk et al.
patent: 5194967 (1993-03-01), Nonomura
patent: 5355230 (1994-10-01), Kaneko
patent: 5396341 (1995-03-01), Takahashi et al.
patent: 5552901 (1996-09-01), Kikuchi et al.
patent: 5978097 (1999-11-01), Veno

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