Asynchronous speech data communication system and communication method therefor

• US 20050203746A1
• Filed: 02/15/2005
• Published: 09/15/2005
• Est. Priority Date: 02/20/2004
• Status: Active Grant

• Current Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Original Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Inventors: Obata, Kijuro
• Granted Patent: US 7,839,837 B2
• Time in Patent Office: Days
• US Class Current: 704/270
• 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: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/36 by determining packet size, e.g. maximum transfer unit [MTU]
• CPC Class Codes: H04M 1/6091 including a wireless interface
• CPC Class Codes: H04W 28/0236 radio quality, e.g. interference, losses or delay
• CPC Class Codes: H04W 72/563 of the wireless resources
• CPC Class Codes: H04W 8/04 Registration at HLR or HSS [Home Subscriber Server]
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

An asynchronous speech data communication system, which is capable of making a hands-free phone conversation at a high speed without causing annoyance in a vehicle, and a communication method therefor are provided. A vehicle-mounted hands-free system includes a speech communication terminal having a speech data communication function, an access point for enabling communication using an asynchronous wireless LAN with other electronic devices, such as a PDA and a mobile audio, including the speech communication terminal, and a communication control section for limiting the packet size of data to be communicated of the other electronic devices when there is communication of speech data by the speech communication terminal.

Claims

1. An asynchronous speech data communication system comprising:

a speech communication terminal operable to reproduce speech from speech data; and

a communication control section that enables asynchronous data communication between the speech communication terminal and other electronic devices, and that limits the packet size of data to be transmitted by the other electronic devices when there is reproduction of speech by the speech communication terminal.

2. The asynchronous speech data communication system according to claim 1, wherein the communication control section transmits, to the other electronic devices, information for defining the maximum packet size of data to be transmitted.

3. The asynchronous speech data communication system according to claim 1, wherein the communication control section comprises a detection section that detects the presence or absence of the reproduction of speech by the speech communication terminal, and limits the packet size when the reproduction of speech from speech data is detected.

4. The asynchronous speech data communication system according to claim 3, wherein the detection section has a polling capability, and limits the packet size when it is detected that the speech communication terminal has speech data to be transmitted as a result of polling the speech communication terminal.

5. An asynchronous speech data communication system comprising:

a speech communication terminal operable to generate speech; and

a communication control section that enables asynchronous data communication between the speech communication terminal and other electronic devices, and that directs polling of the speech communication terminal and the other electronic devices, the speech communication terminal having a higher priority than that of the other electronic devices.

6. The asynchronous speech data communication system according to claim 5, wherein the communication control section comprises a detection section that detects the generation of speech by the speech communication terminal.

7. The asynchronous speech data communication system according to claim 5, wherein the communication control section increases the frequency of polling the speech communication terminal to more than the frequency of polling the other electronic devices.

8. The asynchronous speech data communication system according to claim 5, wherein the speech communication terminal comprises a mobile terminal from which a hands-free phone conversation is possible.

9. The asynchronous speech data communication system according to claim 5, wherein the communication control section is connected to a vehicle-mounted electronic device having at least one of an audio capability, a video capability, and a navigation capability.

10. The asynchronous speech data communication system according to claim 5, wherein the communication control section comprises an access point through which wireless communication is possible with the speech communication terminal and the other electronic devices.

11. The asynchronous speech data communication system according to claim 5, wherein the communication control section enables communication by a wired LAN with the speech communication terminal and the other electronic devices.

12. A method for asynchronously communicating speech data between a speech communication terminal that reproduces speech from speech data and other electronic devices, the method comprising:

detecting the presence or absence of the reproduction of speech by the speech communication terminal; and

limiting the packet size of data to be transmitted by the other electronic devices when it is detected that there is speech being reproduced by the speech communication terminal.

13. The method for asynchronously communicating speech data according to claim 12, comprising transmitting information for defining the maximum packet size of data to be transmitted by the other electronic devices, and the other electronic devices subsequently transmit data within the maximum packet size.

14. A method for asynchronously communicating speech data between a speech communication terminal operable to generate speech and other electronic devices, the method comprising:

polling the speech communication terminal and the other electronic devices, the speech communication terminal having a higher priority than that of the other electronic devices.

15. The method for asynchronously communicating speech data according to claim 14, comprising increasing the frequency of polling the speech communication terminal to more than the frequency of polling the other electronic devices.

16. The method for asynchronously communicating speech data according to claim 14, comprising detecting the presence or absence of the generation of speech by the speech communication terminal,

wherein, when the generation of speech is detected, the speech communication terminal is assigned a higher priority than the other electronic devices.

17. The method for asynchronously communicating speech data according to claim 14, comprising limiting the packet size of data to be transmitted by the other electronic devices.

18. The method for asynchronously communicating speech data according to claim 14, wherein data communication between the speech communication terminal and the other electronic devices is a wireless communication.

19. The method for asynchronously communicating speech data according to claim 14, wherein data communication between the speech communication terminal and the other electronic devices is a communication using an in-vehicle wireless LAN.

20. The method for asynchronously communicating speech data according to claim 19, wherein the speech communication terminal comprises a mobile phone for a hands-free phone conversation.