Method of fast-forwarding and reversing through digitally stored voice messages

• US 5,153,579 A
• Filed: 02/21/1991
• Issued: 10/06/1992
• Est. Priority Date: 08/02/1989
• Status: Expired due to Term

• Current Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Fisch, Kenneth D., Mittel, James G., Brown, Winfield J. Jr.
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Weissman, Peter
• Application Number:
  US07/657,936
• Time in Patent Office: 593 Days
• Field of Search: 340/825.22, 340/825.44, 340/311.1, 379/67, 379/88, 341/110, 341/123, 341/126, 341/144, 341/151, 341/152, 381/30, 381/31, 381/37, 360/32
• US Class Current: 340/7.52
• CPC Class Codes: G08B 3/1033 with voice message alert
• CPC Class Codes: G08B 3/105 with call or message storage means

Abstract

A paging receiver is provided which digitizes and stores received analog voice messages. The stored voice message may be retrieved by using a first switch for a normal playback mode, or by using a second switch for a fast forward and fast reverse playback mode. The fast forward and fast reverse playback modes are achieved by sequentially retrieving every N(th) message bit stored in memory.

Claims

1. A paging receiver having means for receiving transmitted analog voice messages, said paging receiver comprising:

timing means, for generating timing signals at a first data bit rate;

conversion means, coupled to the receiving means, for converting at the first data bit rate the received analog voice messages into digital signals which are representative of a replica of the analog voice message, and further for converting the digital signals into analog voice signals;

message storage means, for sequentially storing digital signals;

controller means, coupled to said conversion means, to said timing means and to said message storage means, for controlling the storage of the digital signals at the first data bit rate in said message storage means, and further for controlling the retrieval of the digital signals from said message storage means;

first switch means, coupled to said controller means, for enabling the sequential retrieval of the digital signals from said message storage means at the first data bit rate and conversion thereof to analog voice message signals at a first playback rate;

second switch means, coupled to said controller means, for further enabling the sequential retrieval of every Nth bit of the digital signals from said message storage means of the first data bit rate, wherein N is not equal to one, and conversion thereof to analog voice message signals at a second playback rate; and

annunciating means, coupled to said controller means and to said conversion means, for audibly delivering the analog voice message signals as analog voice messages delivered at the first playback rate, and at the second playback rate.

2. The paging receiver according to claim 1, wherein said second switch means includes a first position for enabling the sequential retrieval of every nth bit of the digital signals in an ascending sequential order.

3. The paging receiver according to claim 1, wherein said second switch means includes a second position for enabling the sequential retrieval of every Nth bit of the digital signals in a descending sequential order.

4. The paging receiver according to claim 1, wherein said of every Nth bit is enabled only when said second switch means is manually actuated.

5. The paging receiver according to claim 4, wherein the sequential retrieval of each bit of the analog voice message continues when said second switch means is released.