BAND LIMITED TELEPHONE LINE DATA COMMUNICATION SYSTEM

• US 3,524,023 A
• Filed: 07/14/1966
• Issued: 08/11/1970
• Est. Priority Date: 07/14/1966
• Status: Expired due to Term

• Current Assignee: Racal Data Communications Incorporated
• Original Assignee: Sang Y. Whang
• Inventors: Whang, Sang Y.
• Application Number:
  US04/565,214
• Time in Patent Office: 1,489 Days
• US Class Current: 379/93.31
• CPC Class Codes: H04L 2027/003 at baseband only
• CPC Class Codes: H04L 2027/0046 Open loops
• CPC Class Codes: H04L 27/2057 with a separate carrier for each phase state
• CPC Class Codes: H04L 27/2331 wherein the received signal is demodulated using one or more delayed versions of itself
• CPC Class Codes: H04L 27/2332 using a non-coherent carrier

Claims