Methods of recording voice signals in a mobile set

• US 7,242,924 B2
• Filed: 08/29/2003
• Issued: 07/10/2007
• Est. Priority Date: 12/22/2000
• Status: Expired due to Fees

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Xie, Fei
• Primary Examiner(s): Anderson; Matthew
• Assistant Examiner(s): Pan; Yuwen
• Application Number:
  US10/651,663
• Publication Number:
  US 20040192259A1
• Time in Patent Office: 1,411 Days
• Field of Search: 455/412.1, 455/412.2, 455/550.1, 455/556.2, 707/205, 704/210, 704/211, 704/207, 704/208, 704/209, 704/227
• US Class Current: 455/412.1
• CPC Class Codes: G10L 25/78 Detection of presence or absence of voice signals switching of direction of transmission by voice frequency in two-way loud-speaking telephone systems H04M9/10
• CPC Class Codes: H04M 1/656 for recording conversations
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones
• CPC Class Codes: H04M 1/72403 with means for local support of applications that increase the functionality
• CPC Class Codes: Y10S 707/99953 Recoverability
• CPC Class Codes: Y10S 707/99956 File allocation

Abstract

The present invention relates to a mobile set integrating a memory efficient data storage system for the real time recording of voice conversations, data transmission and the like. The data recorder has the capacity to selectively choose the most relevant time frames of a conversation for recording, while discarding time frames that only occupy additional space in memory without holding any conversational data. The invention executes a series of logic steps on each signal including a voice activity detector step, frame comparison step, and sequential recording step. A mobile set having a modified architecture for performing the methods of the present invention is also disclosed.

Claims

1. A computer-readable medium containing a data structure for storing voice signals comprising a conversation list containing an entry for each of one or more phone conversations, each entry comprising a single string of data records wherein each data record has a file pointer to the next record, the last record having an end of file marker, each record corresponding to at least one time stamp of the phone conversation for use in restoring the data structure to a media understandable by a user, wherein the voice signals are analyzed for record-worthiness and recorded into the string of data records responsive to a determination that the voice signals are record-worthy, wherein portions of the voice signal determined to not be record-worthy are discarded and replaced with placeholders indicating locations associated with the dropped portions.

2. The computer-readable medium of claim 1, wherein the data structure further comprises non-voice signals.

3. The computer-readable medium of claim 2, wherein the non-voice signals are computer readable files.

4. The computer-readable medium of claim 1, wherein the data structure is stored on a removable persistent memory element.

5. The computer-readable medium of claim 1, wherein the analysis of the voice signals for record-worthiness includes analysis of level of data content in the voice signals.

6. The computer-readable medium of claim 5, wherein the analysis of level of data content includes analysis of the voice signals on a frame-by-frame basis, wherein each frame is associated with a time stamp.

7. The computer-readable medium of claim 5, wherein each portion of a voice signal having a detected level of data content below a threshold level is not selected for recording into the string of data records.

8. The computer-readable medium of claim 1, wherein the stored voice signals include uplink and downlink voice signals, the uplink voice signals being transmitted from a mobile set to a second device during the phone conversation, and the downlink voice signals being transmitted from the second device to the mobile set during the phone conversation.