IP Library › Granted Patent US 7,023,821
Granted Patent B2
US 7,023,821 · App. 10/338,938 · Granted Apr 4, 2006

Voice over IP portable transreceiver

Assignee: Symnbol Technologies, Inc.
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Quick Facts
Patent No.
US 7,023,821
App. No.
10/338,938
Granted
Apr 4, 2006
Kind
B2
Abstract

A portable transreceiver system transmitting voice communications over a data network is described. The system has a portable transreceiver (WT) mode where multiple users are connected using semi duplex communications, and a private mode in which pairs of users are connected using full duplex communications. Wireless voice enabled terminals are used by the users, and are interconnected via a network such as the Internet.

Claims (40)

1. A system to provide voice communication over a data network, comprising:

wireless voice enabled terminals;

access points connected to the data network adapted to exchange network messages over the data network;

a transmitter component of each of the terminals adapted to exchange wireless messages with the access points over a wireless network; and

a software module executing on each of the terminals configured to provide a plurality of virtual channels, each of the virtual channels being carried over the wireless network and the data network, wherein

the software module is configured to:

enable reception of the voice communication and to enable transmission of the voice communication over selected virtual channels; and

initiate a peer to peer full-duplex call with a selected one of the terminals, wherein

the peer to peer full duplex call overrides reception and transmission of the voice communication over the plurality of virtual channels.

2. The system according to claim 1 , wherein the software module is configured to enable half duplex transmission and reception on the virtual channels.

3. The system according to claim 1 , further comprising a speaker and a PTT switch of each of the terminals.

4. The system according to claim 1 , wherein the software module is configured to prevent collision of transmissions on each of the virtual channels.

5. The system according to claim 4 , wherein transmission on an active channel is disabled when the active channel is in use.

6. The system according to claim 4 , wherein a user notification is generated when initiating transmission on one of the selected channels if the selected channel is in use.

7. The system according to claim 1 , wherein the software module is configured to prioritize simultaneous transmissions on each of the selected channels, such that only one of the simultaneous transmissions is enabled.

8. The system according to claim 1 , further providing a priority channel enabled to override transmission and reception on the plurality of virtual channels.

9. The system according to claim 1 , wherein the selected one of the terminals originates a voice transmission received over one of the plurality of virtual channels.

10. The system according to claim 1 , further comprising a memory of each of the terminals adapted to store and replay a portion of the voice communication.

11. The system according to claim 1 , wherein the software module is configured to transmit redundant data packets representing the voice communication.

12. The system according to claim 1 , further comprising a directory service of the data network adapted to associate names with the virtual channels.

13. The system according to claim 12 , wherein the associated name is displayed on the terminals.

14. The system according to claim 1 , wherein the software module compresses data packets representing the voice communication before transmission.

15. The system according to claim 1 , wherein the software module is configured to operate the voice enabled terminals at a reduced power level.

16. A portable voice enabled terminal comprising:

a transmitter section adapted for exchanging data with an access point via a wireless network, the access point being connected to a data network; and

a processor adapted to execute software instructions, the software instructions comprising:

instructions to provide a plurality of virtual channels carried over the wireless network and the data network;

instructions to generate data packets representing an outbound voice communication, and transmit the data packets over selected ones of the virtual channels;

instructions to receive data packets over the selected ones of the virtual channels and regenerate an inbound voice communication from the data packets; and

instructions to initiate a peer to peer full-duplex call with a selected one of the terminals, wherein the peer to peer full duplex call overrides reception and transmission of the voice communication over the plurality of virtual channels.

17. The voice enabled terminal according to claim 16 , wherein the processor further comprises instructions to establish semi duplex communications over selected ones of the virtual channels.

18. The voice enabled terminal according to claim 16 , wherein the processor further comprises instructions to establish a full duplex communication with a selected addressee.

19. The voice enabled terminal according to claim 16 , wherein the instructions further comprise disabling transmission of the data packets over a virtual channel that is in use.

20. The voice enabled terminal according to claim 16 , wherein the instructions further comprise transmitting the data packets redundantly.

21. The voice enabled terminal according to claim 16 , further comprising instructions to monitor selected ones of the virtual channels for the data packets.

22. The voice enabled terminal according to claim 16 , further comprising a digital signal processor adapted for compressing the data packets.

23. The voice enabled terminal according to claim 16 , further comprising a dedicated push to talk button.

24. The voice enabled terminal according to claim 16 , further comprising a memory module adapted for storing the inbound voice communication.

25. The voice enabled terminal according to claim 16 , further comprising a display adapted to show a user interface of the software instructions.

26. The voice enabled terminal according to claim 25 , wherein the display shows an origin identification of the inbound voice transmission.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Aug 17, 2015
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: SYMBOL TECHNOLOGIES, INC.
Reel/Frame 036371/0738 →
CHANGE OF NAME Recorded Jul 8, 2015
From: SYMBOL TECHNOLOGIES, INC.
To: SYMBOL TECHNOLOGIES, LLC
Reel/Frame 036083/0640 →
SECURITY AGREEMENT Recorded Oct 31, 2014
From: ZIH CORP.; LASER BAND, LLC; ZEBRA ENTERPRISE SOLUTIONS CORP.; SYMBOL TECHNOLOGIES, INC.
To: MORGAN STANLEY SENIOR FUNDING, INC. AS THE COLLATERAL AGENT
Reel/Frame 034114/0270 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 10, 2003
From: WOTHERSPOON, KENT; CALLOW, GERALD
To: SYMBOL TECHNOLOGIES, INC.
Reel/Frame 013744/0227 →
Continuity (2)
Provisional Application 6037221900 · Apr 12, 2002
Related Publication 20030193930A1 · Oct 16, 2003