Speaker verification system using integrated circuit cards

• US 4,827,518 A
• Filed: 08/06/1987
• Issued: 05/02/1989
• Est. Priority Date: 08/06/1987
• Status: Expired due to Term

• Current Assignee: Telcordia Technologies Incorporated (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Bell Communications Research, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Velius, George A., Feustel, Timothy C., Ordun, Michael R., Weinstein, Stephen B., Glemboski, Mark A.
• Primary Examiner(s): Shoop, Jr., William M.
• Assistant Examiner(s): HOff, Marc S.
• Application Number:
  US07/082,198
• Time in Patent Office: 635 Days
• Field of Search: 381/42, 381/43, 235/382, 235/382.5, 235/487, 235/492
• US Class Current: 704/246
• CPC Class Codes: G07C 9/257 electronically G07C9/26 takes precedence
• CPC Class Codes: G10L 17/00 Speaker identification or verification techniques
• CPC Class Codes: H04M 1/271 controlled by voice recognition
• CPC Class Codes: H04M 2201/40 using speech recognition speech recognition per se G10L15/00
• CPC Class Codes: H04M 3/382 using authorisation codes or passwords

Abstract

A speaker verification and voice command system utilizing speech templates stored in an integrated circuit card is disclosed. To verify the user'"'"'s identity, a comparison is made between a plurality of reference speech templates stored in the user'"'"'s integrated circuit card and a test template formed from a word or words spoken by the user.

Claims

1. In combination,

an integrated circuit card including an electronic memory for storing one or more first reference speech templates formed in accordance with a first speech processing algorithm and corresponding to a verification word or phrase and for storing one or more second reference speech templates formed in accordance with a second speech processing algorithm and corresponding to one or more speech commands, which commands enable access to an individualized set of telecommunctions services,

a terminal for forming a first test speech template from a speech signal of a prospective user and corresponding to said verification word or phrases for verifying if the prospective user is a legitimate user, and for forming a second test speech template from a command spoken by said legitimate user to enable said legitimate user to selectively access said individualized set of telecommuncations services, and

comparison means for comparing said first test template with at least one of said first reference templates and said second test template with at least one of said second reference templates.

2. A method for obtaining access to telecommunications services comprising the steps of

providing an integrated circuit card including an electronic memory for storing one or more first reference speech templates formed in accordance with a first speech processing algorithm and corresponding to a verification word or phrase and for storing one or more second reference speech templates formed in accordance with a second speech processing algorithm and corresponding to one or more spoken commands, which commands enable access to an individualized set of telecommunications services,

speaking said verification word or phrase by a prospective user into a microphone associated with a terminal,

forming a first test template in said terminal from said spoken verification word or phrase in accordance with said first speech processing algorithm,

comparing said first test template with one or more of said first reference templates to determine if said prospective user is a legitimate user of said terminal,

if said prospective user of said terminal is a legitimate user, speaking a command into said microphone,

forming a second test template from said spoken command in said terminal in accordance with said second speech processing algorithm, and

comparing said second test template with one or more of said second reference templates to selectively provide said legitimate user with access to said set of telecommunications services.

3. A terminal for use in obtaining access to telecommunications services comprising

means for receiving an integrated circuit card including an electronic memory for storing one or more first reference speech templates formed in accordance with a first speech processing algorithm and corresponding to a verification word and for storing one or more second reference speech templates formed in accordance with a second speech processing algorithm and corresponding to one or more spoken commands, which commands enable access to an individualized set of telecommunications services,

microphone means for receiving spoken verification words and spoken command words,

first speech processing means for converting a spoken verification word into a first test speech template in accordance with said first speech processing algorithm,

second speech processing means for converting a spoken command word into a second test speech template in accordance with said second speech processing algorithm, and

comparator means for comparing said first test template with one or more of said first reference templates to determine if a prospective user is a legitimate user and for comparing said second test speech template with one or more of said second reference speech templates to enable a user to selectively access said telecommunications services.