Electrical computers and digital data processing systems: input/ – Access locking
Reexamination Certificate
1998-03-19
2001-06-19
Lee, Thomas (Department: 2782)
Electrical computers and digital data processing systems: input/
Access locking
C710S120000, C705S024000, C707S793000
Reexamination Certificate
active
06249835
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an information processing apparatus and an information processing method of transmitting data via an interface and printing it with a printing apparatus.
2. Related Background Art
In printing data generated by an application with a printer, both a host computer and the printer have conventionally performed print processes, considering the line type and data transmission rate not at all.
Conventionally, the host computer has converted data and transmitted it to the printer, considering the connected line type, data transmission capacity and printer performance not at all.
Conventionally, even if a line has a data transmission capacity varying with time, the printer has performed print processes at a single speed without considering the line transmission rate.
Both the host computer and printer have performed print processes, considering the line type and data transmission capacity not at all, so that a print efficiency is poor.
The host computer converts data independently from the line type and data transmission capacity. Therefore, if data is converted into a data format matching a low transmission capacity irrespective of a high data transmission capacity of the line, data imposing a load on the printer is transmitted.
For example, if PDL (page descriptive language) data is transmitted although it takes not so long a time to transmit image data, the printer has a load such as data development so that a total print speed becomes lower than when image data is transmitted.
If data is converted into a data format matching a high transmission capacity, the amount of transmission data becomes large so that it takes a long time to transmit data if the transmission capacity is small.
For example, if image data is transmitted when the data transmission capacity is low, it takes a long time to transmit it and the total print speed lowers.
SUMMARY OF THE INVENTION
It is an object of the present invention to perform optimum print processes matching a data transmission capacity.
The printer has performed print processes at a constant print speed irrespective of whether the transmission capacity is high or low.
If the print speed of the printer is made fast, a print overrun may occur when the data transmission capacity is low.
If the print speed of the printer is made low, printing is performed at a low speed even if the data transmission speed is high.
It is therefore another object of the present invention to perform optimum print processes matching the data transmission capacity and the print speed.
According to a first aspect of the present invention solving the above object, an information processing apparatus is provided in which a conversion unit generates converted output data and a communications unit transmits the converted output data to an external output apparatus. The information processing apparatus comprises: acquiring means for acquiring discrimination information to be used for discrimination of a data transmission state of the communications unit; conversion control means for controlling the conversion of data by the conversion unit in accordance with the discrimination information acquired by the acquiring means; and communications control means for transmitting from the communications unit the output data from the conversion unit converted under control of the conversion control means.
According to a second aspect of the present invention solving the above object, an output control apparatus is provided in which an output unit outputs data input from a communications unit, the output control apparatus comprises: acquiring means for acquiring discrimination information to be used for discrimination of a data transmission state of the communications unit; and control means for controlling a data output speed of the output unit in accordance with the discrimination information acquired by the acquiring means.
REFERENCES:
patent: 4701841 (1987-10-01), Goodrich et al.
patent: 5081579 (1992-01-01), Komai et al.
patent: 5179692 (1993-01-01), Inoue
patent: 5475686 (1995-12-01), Bach et al.
patent: 5524184 (1996-06-01), Johnson
patent: 5659770 (1997-08-01), Yamada
patent: 5671440 (1997-09-01), Curry
patent: 5845144 (1998-12-01), Tateyama et al.
patent: 5966451 (1999-10-01), Utsumi
Canon Kabushiki Kaisha
Elamin Abdelmenien
Fitzpatrick ,Cella, Harper & Scinto
Lee Thomas
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