Parallel data stream decryption device
First Claim
Patent Images
1. A method for decrypting radar video data recorded on a recorder comprising the steps of:
- (a) transferring said radar video data from said recorder into an encrypted data file within a personal computer;
(b) opening said encrypted data file which includes said radar video data in an encrypted form interleaved with unencrypted recorder timing headers;
(c) specifying a header block range over which to decrypt said radar video data in said encrypted form, wherein a user specifies said header block range by entering a time range of said radar video data to be decrypted in a first block time text box and a last block time text box which appears on a monitor for said personal computer;
(d) engaging a decrypt button appearing on the monitor for said personal computer, wherein said user engages said decrypt button to invoke a decrypt function within a computer program on said personal computer;
(e) decrypting said radar video data within said time range from said encrypted form to an unencrypted binary form, wherein the decrypt function within said computer program directs and controls the decryption of said radar video data to said unencrypted binary form;
(f) opening a decrypted binary data file, wherein said decrypted binary data file includes said radar video data in said unencrypted binary form;
(g) specifying a range of scans for converting said radar video data contained in said decrypted binary data file to an ASCII form; and
(h) engaging an extract button appearing on the monitor of said personal computer, wherein said user engages said extract button to invoke an extract function within said computer program, said extract function within said computer program extracting said radar video data within said range of scans specified by said user from said decrypted binary data file and converting said radar video data from said unencrypted binary form to an ASCII form for storage in a text file.
1 Assignment
0 Petitions
Accused Products
Abstract
A parallel data stream decryption device which allows a user to decrypt radar video data obtained from a missile seeker which was encrypted while in a parallel data format. The decryption device has a computer program which decryptes the radar video data contained in an encrypted data file and creates a decrypted binary data file. The computer software then extracts data from the decrypted binary data file and converts the extracted data to an ASCII text file.
-
Citations
20 Claims
-
1. A method for decrypting radar video data recorded on a recorder comprising the steps of:
-
(a) transferring said radar video data from said recorder into an encrypted data file within a personal computer; (b) opening said encrypted data file which includes said radar video data in an encrypted form interleaved with unencrypted recorder timing headers; (c) specifying a header block range over which to decrypt said radar video data in said encrypted form, wherein a user specifies said header block range by entering a time range of said radar video data to be decrypted in a first block time text box and a last block time text box which appears on a monitor for said personal computer; (d) engaging a decrypt button appearing on the monitor for said personal computer, wherein said user engages said decrypt button to invoke a decrypt function within a computer program on said personal computer; (e) decrypting said radar video data within said time range from said encrypted form to an unencrypted binary form, wherein the decrypt function within said computer program directs and controls the decryption of said radar video data to said unencrypted binary form; (f) opening a decrypted binary data file, wherein said decrypted binary data file includes said radar video data in said unencrypted binary form; (g) specifying a range of scans for converting said radar video data contained in said decrypted binary data file to an ASCII form; and (h) engaging an extract button appearing on the monitor of said personal computer, wherein said user engages said extract button to invoke an extract function within said computer program, said extract function within said computer program extracting said radar video data within said range of scans specified by said user from said decrypted binary data file and converting said radar video data from said unencrypted binary form to an ASCII form for storage in a text file. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An apparatus for decrypting radar video data recorded on a recorder comprising:
-
(a) a personal computer for receiving said radar video data from said recorder and storing said radar video data in an encrypted form within an encrypted data file located in said personal computer for processing by said personal computer; (b) a decryption device connected to said personal computer to receive said radar video data in said encrypted form from said personal computer, decrypt said radar video data, and transfer said radar video data to said personal computer in an unencrypted form. (c) computer software contained within said personal computer, said computer software controlling handling and interpretation of said radar video data to and from said decryption device by said personal computer; (d) a computer monitor connected to said personal computer, said computer monitor displaying a decrypt button which a user engages to transfer said radar video data from said personal computer to said decryption device for conversion to said unencrypted form; (e) said computer software storing said radar video data in a decrypted binary data file within personal computer after said radar video data is decrypted by said decryption unit; (f) said computer monitor displaying an extract button which said user engages to extract a range of scans of said radar video data from said decrypted binary data file for conversion to an ASCII comma delimited form; (g) said computer software, responsive to said user engaging said extract button, extracting the range of scans of said radar video data from said decrypted binary data file; and (h) said computer software converting said radar video data extracted from said decrypted binary data file to said ASCII comma delimited form. - View Dependent Claims (9, 10, 11, 13, 18)
-
-
12. The apparatus of claim 12 wherein said computer software aligns the radar video data using a frame sync offset within the radar video data as a reference for alignment and writes said radar video data to a byte aligned data file.
-
14. An apparatus for decrypting radar video data recorded on a recorder comprising:
-
(a) a personal computer for receiving said radar video data from said recorder and storing said radar video data in an encrypted form within an encrypted data file located in said personal computer for processing by said personal computer; (b) a decryption device connected to said personal computer to receive said radar video data in said encrypted form from personal computer, decrypt said radar video data and transfer said radar video data to said personal computer in an unencrypted form. (c) computer software contained within said personal computer, said computer software controlling handling and interpretation of said radar video data to and from said decryption device by said personal computer; (d) a computer monitor connected to said personal computer, said computer monitor displaying a decrypt button which a user engages to transfer said radar video data from said personal computer to said decryption device for conversion to said unencrypted form; (e) said computer software storing said radar video data in a decrypted binary data file within said personal computer after said radar video data is decrypted by said decryption unit; (f) said computer monitor displaying an extract button which said user engages to extract a range of scans of said radar video data from said decrypted binary data file for conversion to an ASCII comma delimited form; (g) said computer software, responsive to said user engaging said decrypt button, extracting the range of scans of said radar video data from said decrypted binary data file; (h) said computer software converting said radar video data extracted from said decrypted binary data file to said ASCII comma delimited form; and (i) said computer monitor displaying a plurality of scan text boxes which allow said user to select and enter the range of scans of said radar video data for conversion by said computer software from said unencrypted binary form to said ASCII comma delimited form for storage in a text file within said personal computer. - View Dependent Claims (15, 16, 17, 19, 20)
-
Specification