Boots – shoes – and leggings
Patent
1984-09-28
1987-06-30
Harkcom, Gary V.
Boots, shoes, and leggings
364171, G06F 1546
Patent
active
046775439
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCES TO RELATED APPLICATIONS
This application is related to U.S. application Ser. No. 651,996 now allowed.
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a transportable data input/output unit capable of being detached from the body of a numerical control device.
2. Description of the Related Art
In numerical control, there are cases where a host computer is used and made to perform a variety of data processing tasks to create command data for the machining of a workpiece. The data created by the host computer is recorded on a paper tape by a tape puncher and, with the paper tape serving as the recording medium, is used as input information for another system. In creating the paper tape, the contents of the tape are printed out by a printer in order to provide a record thereof beforehand. Where an output from the host computer is recorded on the paper tape or printed on recording paper, the paper tape puncher and printer used ordinarily are provided separately from the host computer body. These pieces of peripheral equipment are directly connected to the host computer and operate solely in response to commands therefrom. Unlike a system in which such peripheral equipment is of a disjointed nature, a system is conceivable in which the peripheral equipment operates on the basis of commands from a host computer when connected to the computer, but in which the contents of a paper tape may be read independently and printed for copying purposes when the peripheral equipment is disconnected from the host computer. However, a system such as this can be applied to only very limited systems and is inapplicable to others in certain aspects. Moreover, even where applicable, a disadvantage occurs in that results cannot be obtained unless the host computer software is modified. Furthermore, even if a paper tape format is adopted, two codes, namely "CR", "LF", have been used as the codes for carriage return and line feed operations in the past in accordance with the ISO codes, even though recently the carriage return and line feed have come to be implemented solely by the "LF" code. This means that even though a paper tape may be prepared using the same ISO standards, the tape cannot be used with both the old and new systems.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a data input/output unit for a numerical control device in a numerical control system, which input/output unit is detachable from a host computer and includes a tape puncher, tape reader and printer combined into one, where the input output unit not only responds to commands from a host computer but is also capable of independently implementing a code conversion between "line feed" and "line feed-carriage return".
The present invention provides a processing function which not only enables a data input/output unit to operate in accordance with a command from a host computer in order to create a paper tape, print out transferred data and enter data, but which also enables the unit itself to be programmed independently to create a paper tape and print the data borne by the paper tape. A tape puncher is provided with a data discriminating circuit for discriminating line feed code data. The arrangement is such that when line feed code data are sensed by the data discriminating circuit, line feed code data and carriage return code data are delivered to a punching section to punch the line feed codes and carriage return codes consecutively. According to the present invention, it is possible to obtain a transportable data input/output unit capable of servicing several numerical control devices, and it is also possible to effect a simple changeover from a new system to an old system or from the old system to the new system with relation to "line feed" and "carriage return" data when creating or copying a paper tape.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of a data input/output unit according to the present invention;
FIG. 2 is a block diagram showi
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Furois et al., "Portable Inventory System and Method", IBM Technical Disclosure Bulletin, vol. 19, No. 5, Oct., 1976, p. 1828.
Kishi Hajimu
Mizuno Yutaka
Seki Masaki
Fanuc Ltd.
Harkcom Gary V.
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