Encoder initialization and communications

• US 8,208,516 B2
• Filed: 07/09/2007
• Issued: 06/26/2012
• Est. Priority Date: 07/14/2006
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Meylan, Arnaud, Whitney, Mark, Jayaram, Ranjith
• Primary Examiner(s): Williams, Lawrence B
• Application Number:
  US11/775,155
• Publication Number:
  US 20080013619A1
• Time in Patent Office: 1,814 Days
• Field of Search: 375/224, 375/295, 375/377, 375/219, 370331-332, 455436-439, 455/442, 382/236
• US Class Current: 375/219
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04N 19/136 Incoming video signal characteristics or properties
• CPC Class Codes: H04N 19/15 by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
• CPC Class Codes: H04N 19/196 being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters processing of motion vectors H04N19/513

Abstract

The disclosure is directed to an apparatus and method for encoder initialization and communications. The apparatus may include a database and an encoder module. The database may be configured to receive a plurality of parameters to be used for operation of the encoder module. The database may be further configured to store the plurality of parameters and to provide the plurality of parameters to the encoder module. The encoder module includes an encoder configured to be initialized based on the plurality of parameters from the database. When invoked, the encoder may rely on the database to initialize rather than performing measurements on the current signal that is to be encoded. In one aspect, the apparatus may be an access terminal that can seamlessly switch between different domains, different networks, different base stations, and different access points.

Claims

1. An apparatus for encoder initialization and communications, comprising:

an encoder module including an encoder; and

a database configured to receive a plurality of parameters to be used for operation of the encoder module, the database further configured to store the plurality of parameters, the database further configured to provide the plurality of parameters to the encoder module,

wherein the encoder is configured to be initialized based on the plurality of parameters from the database when at least one of the following occurs;

when the apparatus is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed,

wherein the handoff occurs seamlessly.

2. An apparatus for encoder initialization and communications, comprising:

an encoder module including an encoder; and

a database configured to receive a plurality of parameters to be used for operation of the encoder module, the database further configured to store the plurality of parameters, the database further configured to provide the plurality of parameters to the encoder module,

wherein the encoder is configured to be initialized based on the plurality of parameters from the database when at least one of the following occurs;

when the apparatus is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed,

wherein each of the network supporting the first data rate, the network supporting the second data rate, the network using the encoder type, the network that does not support the encoder type, and the network associated with the apparatus is a communications network comprising at least one of an access point or a base station.

3. An apparatus for encoder initialization and communications, comprising:

an encoder module including an encoder; and

a database configured to receive a plurality of parameters to be used for operation of the encoder module, the database further configured to store the plurality of parameters, the database further configured to provide the plurality of parameters to the encoder module,

wherein the encoder is configured to be initialized based on the plurality of parameters from the database when at least one of the following occurs;

when the apparatus is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed,

and

wherein if the first domain is an Internet Protocol multimedia subsystem (IMS) domain, then the second domain is a circuit-switched (CS) domain, and if the first domain is a CS domain, then the second domain is an IMS domain.

4. The apparatus of claim 3, wherein the IMS domain supports at least one of the following:

a wide area network (WAN), a wireless local area network (WLAN), World Interoperability for Microwave Access (WiMAX), wireless fidelity (Wi-Fi), Institute for Electrical and Electronic Engineers (IEEE) 802.11, Bluetooth-based Wireless Personal Area Network (WPAN), ultra-wideband (UWB), Long Term Evolution (LTE) and home radio frequency (HomeRF), and

wherein the CS domain supports at least one of the following;

second-generation wireless or cellular technologies (2G), third-generation wireless or cellular technologies (3G), fourth-generation wireless or cellular technologies (4G), cellular code division multiple access (CDMA), wideband code division multiple access (W-CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), CDMA 2000 EV-DO, CDMA 2000 1XRTT, Global System for Mobile Communications (GSM), and Ultra Mobile Broadband (UMB).

5. An apparatus for encoder initialization and communications, comprising:

an encoder module including an encoder; and

a database configured to receive a plurality of parameters to be used for operation of the encoder module, the database further configured to store the plurality of parameters, the database further configured to provide the plurality of parameters to the encoder module,

wherein the encoder is configured to be initialized based on the plurality of parameters from the database when at least one of the following occurs;

when the apparatus is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed,

wherein each of the network supporting the first data rate, the network supporting the second data rate, the network using the encoder type, and the network that does not support the encoder type comprises a base station.

6. An apparatus for encoder initialization and communications, comprising:

an encoder module including an encoder; and

a database configured to receive a plurality of parameters to be used for operation of the encoder module, the database further configured to store the plurality of parameters, the database further configured to provide the plurality of parameters to the encoder module,

wherein the encoder is configured to be initialized based on the plurality of parameters from the database when at least one of the following occurs;

when the apparatus is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed,

wherein each of the network supporting the first data rate, the network supporting the second data rate, the network using the encoder type, and the network that does not support the encoder type comprises an access point.

7. A method of encoder initialization and communications, comprising:

receiving a plurality of parameters by a database, the plurality of parameters to be used for operation of an encoder;

storing the plurality of parameters in the database;

providing the plurality of parameters from the database;

initializing the encoder based on the plurality of parameters from the database;

receiving a first communication signal before the step of receiving a plurality of parameters;

generating the plurality of parameters based on the first communication signal;

receiving a second communication signal after the step of receiving the first communication signal, the second communication signal being a current signal, the first communication signal being a previous signal; and

encoding the current signal by the encoder after the step of initializing,

wherein the step of initializing comprises initializing the encoder based on the plurality of parameters associated with the previous signal and not the current signal that is encoded by the encoder.

8. The method of claim 7, further comprising:

generating a second plurality of parameters based on the second communication signal;

receiving the second plurality of parameters by the database, the second plurality of parameters to be used for operation of the encoder;

storing the second plurality of parameters in the database;

receiving a third communication signal after the step of receiving the second communication signal;

providing the second plurality of parameters from the database;

initializing the encoder based on the second plurality of parameters; and

encoding the third communication signal by the encoder,

wherein the step of initializing the encoder based on the second plurality of parameters comprises initializing the encoder based on the second plurality of parameters associated with the second communication signal and not the third communication signal that is encoded by the encoder, and wherein the step of encoding the third communication signal comprises encoding the third communication signal without encoding the second communication signal at the same time.

9. The method of claim 7, wherein the first communication signal is a first audio signal, and the second communication signal is a second audio signal.

10. The method of claim 7, wherein the first communication signal is a first video signal, and the second communication signal is a second video signal.

11. The method of claim 7, wherein the first communication signal is a first multimedia signal, and the second communication signal is a second multimedia signal.

13. The method of claim 7, wherein the encoder is an encoder of an access terminal.

14. The method of claim 7, wherein the plurality of parameters comprises one or more of the following:

band energy, a background noise estimate, a signal energy estimate, a channel energy estimate vector, a channel noise energy estimate vector, a threshold to determine a data rate, an adaptive codebook index, and wireless channel information.

15. The method of claim 7, wherein the encoder is initialized when one of the following occurs:

when a type of the encoder is changed, when a data rate of the encoder needs to be changed, when a communication session or call is initiated, or when the encoder is powered-up.

16. The method of claim 7, wherein the encoder is initialized when one of the following occurs:

when an apparatus comprising the encoder is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed.

12. A method of encoder initialization and communications, comprising:

receiving a plurality of parameters by a database, the plurality of parameters to be used for operation of an encoder;

storing the plurality of parameters in the database;

providing the plurality of parameters from the database;

initializing the encoder based on the plurality of parameters from the database;

selecting the plurality of parameters from the database;

comparing the selected plurality of parameters to a second plurality of parameters;

determining one or more parameters based on the comparison; and

providing the one or more parameters to the encoder and to the database.

17. An apparatus for encoder initialization and communications, comprising:

means for encoding a signal;

means for receiving a plurality of parameters, the plurality of parameters to be used for operation of the means for encoding;

means for storing the plurality of parameters;

means for providing the plurality of parameters from the means for storing;

means for initializing the means for encoding based on the plurality of parameters provided by the means for storing;

means for receiving communication signals, wherein the means for receiving communication signals is configured to receive a first communication signal and to receive a second communication signal after receiving the first communication signal, the second communication signal being a current signal, the first communication signal being a previous signal; and

means for generating parameters, wherein the means for generating parameters is configured to generate the plurality of parameters based on the first communication signal,

wherein the means for encoding is configured to encode the current signal without encoding the previous signal simultaneously, and wherein the means for initializing is configured to initialize the means for encoding based on the plurality of parameters associated with the previous signal and not the current signal that is encoded by the means for encoding.

18. The apparatus of claim 17, further comprising means for selecting the plurality of parameters, wherein the means for selecting comprises the means for receiving the plurality of parameters and the means for providing the plurality of parameters.

19. The apparatus of claim 17, further comprising:

means for selecting the plurality of parameters from the means for storing;

means for comparing the selected plurality of parameters to a second plurality of parameters;

means for determining one or more parameters based on the comparison; and

means for providing the one or more parameters to the means for encoding and to the means for storing.

20. The apparatus of claim 17, wherein the means for encoding is configured to encode an audio signal, a video signal, or a multimedia signal.

21. The apparatus of claim 17, wherein the apparatus is an access terminal.

22. The apparatus of claim 17, wherein the means for initializing is configured to initialize the means for encoding based on the plurality of parameters provided by the means for storing when one of the following occurs:

when the apparatus changes an encoder type being used, when a data rate of the apparatus needs to be changed, when a communication session or call is initiated, or when the apparatus is powered-up.

23. The apparatus of claim 17, wherein the means for initializing is configured to initialize the means for encoding based on the plurality of parameters provided by the means for storing when one of the following occurs:

when an apparatus comprising the encoder is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed.

24. A computer program product, comprising:

a non-transitory computer-readable medium comprising;

code for causing at least one computer to receive a plurality of parameters by a database, the plurality of parameters to be used for operation of an encoder;

code for causing the at least one computer to store the plurality of parameters in the database;

code for causing the at least one computer to provide the plurality of parameters from the database to allow the encoder to be initialized based on the plurality of parameters from the database;

code for causing the at least one computer to invoke initialization of the encoder, wherein the encoder is to be initialized based on the plurality of parameters from the database;

code for causing the at least one computer to generate the plurality of parameters based on a first communication signal; and

code for causing the at least one computer to invoke encoding of a second communication signal, the second communication signal being a current signal and the first communication signal being a previous signal,

wherein the encoder is to be initialized based on the plurality of parameters associated with the previous signal and not the current signal.

25. The computer program product of claim 24, wherein each of the first communication signal and the second communication signal is an audio signal, a video signal, or a multimedia signal.

26. The computer program product of claim 24, wherein the initialization of the encoder is invoked upon occurrence of one of the following events:

when a type of the encoder is changed, when a data rate of the encoder needs to be changed, when a communication session or call is initiated, or when the encoder is powered-up.

27. The computer program product of claim 24, wherein the initialization of the encoder is invoked upon occurrence of one of the following events:

when an apparatus comprising the encoder is handed off from a first domain to a second domain;

when the apparatus is handed off from a network supporting a first data rate to a network supporting a second data rate, wherein the first data rate is different from the second data rate;

when the apparatus is handed off from a network using an encoder type to a network that does not support the encoder type;

or when a data rate of a network associated with the apparatus is changed.

28. The computer program product of claim 24, wherein the computer-readable medium further comprises code for causing the at least one computer to select or determine the plurality of parameters for the database.

29. A computer program product, comprising:

a non-transitory computer-readable medium comprising;

code for causing at least one computer to receive a plurality of parameters by a database, the plurality of parameters to be used for operation of an encoder;

code for causing the at least one computer to store the plurality of parameters in the database;

code for causing the at least one computer to provide the plurality of parameters from the database to allow the encoder to be initialized based on the plurality of parameters from the database;

code for causing the at least one computer to select the plurality of parameters from the database;

code for causing the at least one computer to compare the selected plurality of parameters to a second plurality of parameters;

code for causing the at least one computer to determine one or more parameters based on the comparison; and

code for causing the at least one computer to provide the one or more parameters to the encoder and to the database.

30. The computer program product of claim 29, wherein the encoder is an encoder of an access terminal.