Apparatus and method for determining ID information recorded on an information-stored medium

• US 6,490,408 B1
• Filed: 10/13/1998
• Issued: 12/03/2002
• Est. Priority Date: 10/28/1997
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Seo, Kang-Soo, Park, Sung-Wan, Um, Soung-Hyun
• Primary Examiner(s): Christensen, Andrew
• Assistant Examiner(s): Chieu, Po-lin
• Application Number:
  US09/170,034
• Time in Patent Office: 1,512 Days
• Field of Search: 386/1, 386/45, 386/94, 386/125-126, 360/60, 380/201, 380/202, 713/193, 369/47.46, 369/47.47, 369/47.41, 725/31, 725/134
• US Class Current: 386/234
• CPC Class Codes: G11B 19/122 involving the detection of an identification or authentication mark record carriers indicating unauthorised or prior use G11B23/28
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00268 said barcode being recorded in a burst cutting area [BCA]
• CPC Class Codes: G11B 20/00855 involving a step of exchanging information with a remote server
• CPC Class Codes: H04N 21/23106 involving caching operations prefetching while addressing of a memory level in which the access to the desired data or data block requires associative addressing means within memory systems or architectures G06F12/0862; caching at an intermediate stage in a data network H04L67/568
• CPC Class Codes: H04N 21/258 Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data arrangements for services using the result on the distributing side of broadcast systems H04H60/66; profiles in network data switching protocols H04L67/30
• CPC Class Codes: H04N 21/4135 external recorder interface circuits between an apparatus for recording television signals and a television receiver H04N5/775
• CPC Class Codes: H04N 21/4432 Powering on the client, e.g. bootstrap loading using setup parameters being stored locally or received from the server resetting in general G06F1/14; program loading or initiating in general G06F9/445; bootstrapping in general G06F9/4401; secure boots of computer platforms G06F21/57
• CPC Class Codes: H04N 21/6547 comprising parameters, e.g. for client setup
• CPC Class Codes: H04N 21/812 involving advertisement data advertising per se G06Q30/02
• CPC Class Codes: H04N 21/8352 involving content or source identification data, e.g. Unique Material Identifier [UMID]
• CPC Class Codes: H04N 5/85 on discs or drums

Abstract

A method and apparatus for controlling remote reproduction of an information-stored medium in a reproduction apparatus including a reproduction unit for reproducing the information-stored medium in which an identification (ID) information is recorded in constant angular velocity (CAV) drive mode, and an external device for communicating with a remote server for playback permission of the information-stored medium. CAV rotating speed information is transmitted from external device to the reproduction unit. ID information is read while servo-controlling the rotation of the information-stored medium based on the transmitted CAV rotating speed information.

Claims

1. A method for controlling remote reproduction of an information-stored medium in a reproduction apparatus that includes a reproduction unit for reproducing the information-stored medium in which an identification (ID) information is recorded in constant angular velocity (CAV) drive mode, and an external device for communicating with a remote server for playback permission of said information-stored medium, the method comprising the steps of:

transmitting CAV rotating speed information for reproduction of said ID information from said external device to said reproduction unit; and

comparing information on an actual rotation speed of the information-stored medium rotating under servo-control in the reproduction unit with the transmitted CAV rotation speed information, and

reading out said ID information when the difference of the comparison result falls within an allowable predetermined difference range, wherein the allowable predetermined difference range is determined based on the number of ID information read-out trials.

2. A method according to claim 1, wherein the step of reading out said ID information is repeated several times, depending on whether a read error of said ID information happens or not.