Method and system for controlling digital printing of secret file

Patent metadata

Field	Value
Publication number	US-9952812-B2
Application number	US-201314915791-A
Country	US
Kind code	B2
Filing date	Dec 6, 2013
Priority date	Sep 2, 2013
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A method and system for controlling digital printing of a secret file is provided in this invention. The method comprises: obtaining a source file to be printed; importing the source file into a secret file library; generating a printing job for the source file and adding the printing job into a job list; writing printing control information of the source file into a standard file; after the printing is started, extracting page dot matrix data of the source file from the secret file library, and processing the page dot matrix data according to the printing control information; and transmitting the processed page dot matrix data to a numerical control device. Control management may be effectively realized throughout the printing process of the secret file, and the source file and the standard file cannot be copied without some professional skills in the printing process.

First claim

What is claimed is:

1. A method for controlling digital printing of a secret file, comprising:
obtaining a source file to be printed;
importing the source file into a secret file library, wherein the secret file library is a dedicated file folder and is hidden from users;
generating a printing job for the source file and adding the printing job into a job list;
writing printing control information of the source file into a standard file, wherein the printing control information includes at least one of a number of printed copies, a number of copies, a printing range, an unique identification ID of a job, a file name of the job, a number of printing copies of the job, an identification of current printing system, and a number of pages that have been printed, wherein the standard file is encrypted and stored in the secret file library;
after the printing is started, extracting page dot matrix data of the source file from the secret file library, and processing the page dot matrix data according to the printing control information; and
transmitting the processed page dot matrix data to a numerical control device.

2. The method of claim 1 , characterized in that the method further comprises:
detecting whether the source file is a printed file that has been identified by the system, before the step of importing the source file into the secret file library;
if the source file is not a printed file, performing the step of importing the source file into the secret file library.

3. The method of claim 1 , characterized in that the method further comprises:
after the printing job is launched, extracting system information and writing the system information into the source file;
the step of processing the page dot matrix data according to the printing control information comprises: concealing the system information into the page dot matrix data.

4. The method of claim 3 , characterized in that the system information comprises any one or more of: a CPU serial number, a hard disk serial number, and a network card physical address.

5. The method of claim 3 , characterized in that concealing the system information into the page dot matrix data comprises:
superimposing a digital watermark on the page dot matrix data according to the system information.

6. A system for controlling digital printing of a secret file, comprising:
a file library management module for creating a secret file library, wherein the secret file library is a dedicated file folder and is hidden from users;
an obtaining module for obtaining a source file to be printed;
a job management module for importing the source file into the secret file library, generating a printing job for the source file and adding the printing job into a job list, writing printing control information of the source file into a standard file, wherein the printing control information includes at least one of a number of printed copies, a number of copies, a printing range, an unique identification ID of a job, a file name of the job, a number of printing copies of the job, an identification of current printing system, and a number of pages that have been printed, wherein the standard file is encrypted and stored in the secret file library;
a data processing module for, after the printing is started, extracting page dot matrix data of the source file from the secret file library, and processing the page dot matrix data according to the printing control information; and
a data transmission module for transmitting the processed page dot matrix data to a numerical control device.

7. The system of claim 6 , characterized in that the system further comprising:
a detection module for, before the job management module importing the source file into the secret file library, detecting whether the source file is a printed file that has been identified by the system, if the source file is not the printed file, notifying the job management module to import the source file into the secret file library.

8. The system of claim 6 , characterized in that the system further comprises:
a system information extraction module for, after the printing job is launched, extracting system information and writing the system information into the source file,
wherein the data processing module is configured to conceal the system information into the page dot matrix data.

9. A system for controlling digital printing of a secret file, comprising a processor configured to perform the following steps:
obtaining a source file to be printed;
importing the source file into a secret file library, wherein the secret file library is a dedicated file folder and is hidden from users;
generating a printing job for the source file and adding the printing job into a job list;
writing printing control information of the source file into a standard file, wherein the printing control information includes at least one of a number of printed copies, a number of copies, a printing range, an unique identification ID of a job, a file name of the job, a number of printing copies of the job, an identification of current printing system, and a number of pages that have been printed, wherein the standard file is encrypted and stored in the secret file library;
after the printing is started, extracting page dot matrix data of the source file from the secret file library, and processing the page dot matrix data according to the printing control information; and
transmitting the processed page dot matrix data to a numerical control device.

10. A non-transitory computer readable storage medium on which a program is recorded, the program causing a computer to perform the following processes:
obtaining a source file to be printed;
importing the source file into a secret file library, wherein the secret file library is a dedicated file folder and is hidden from users;
generating a printing job for the source file and adding the printing job into a job list;
writing printing control information of the source file into a standard file, wherein the printing control information includes at least one of a number of printed copies, a number of copies, a printing range, an unique identification ID of a job, a file name of the job, a number of printing copies of the job, an identification ID of a job, a file name of the job, a number of printing copies of the job, an identification of current printing system, and a number of pages that have been printed, wherein the standard file is encrypted and stored in the secret file library;
after the printing is started, extracting page dot matrix data of the source file from the secret file library, and processing the page dot matrix data according to the printing control information; and
transmitting the processed page dot matrix data to a numerical control device.

Assignees

• Univ Peking Founder Group Co
• Founder Information Ind Holdings Co Ltd
• Beijing Founder Electronics Co Ltd

Inventors

• Sun Xingxin

Classifications

• G06F3/1267

  Job repository, e.g. non-scheduled jobs, delay printing · CPC title

• G06F3/1243 Primary

  Variable data printing, e.g. document forms, templates, labels, coupons, advertisements, logos, watermarks, transactional printing, fixed content versioning · CPC title

• G06F3/1238 Primary

  Secure printing, e.g. user identification, user rights for device usage, unallowed content, blanking portions or fields of a page, releasing held jobs · CPC title

• G06F3/1296

  Printer job scheduling or printer resource handling · CPC title

• G06F21/608

  Secure printing · CPC title