Wireless server based text to speech email

• US 8,103,509 B2
• Filed: 12/04/2007
• Issued: 01/24/2012
• Est. Priority Date: 12/05/2006
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Mobile Voice Control LLC
• Inventors: Burns, Stephen S., Kowitz, Mickey W.
• Primary Examiner(s): Azad, Abul K
• Application Number:
  US11/999,334
• Publication Number:
  US 20080262846A1
• Time in Patent Office: 1,512 Days
• Field of Search: 704/270.1, 704/260, 704/270, 455/412.1, 455/412.2, 455/414.4
• US Class Current: 704/270.1
• CPC Class Codes: G10L 13/08 Text analysis or generation of parameters for speech synthesis out of text, e.g. grapheme to phoneme translation, prosody generation or stress or intonation determination
• CPC Class Codes: H04L 51/066 Format adaptation, e.g. format conversion or compression
• CPC Class Codes: H04L 51/58 Message adaptation for wireless communication
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals

Abstract

An email system for mobile devices, such as cellular phones and PDAs, is disclosed which allows email messages to be played back on the mobile device as voice messages on demand by way of a media player, thus eliminating the need for a unified messaging system. Email messages are received by the mobile device in a known manner. In accordance with an important aspect of the invention, the email messages are identified by the mobile device as they are received. After the message is identified, the mobile device sends the email message in text format to a server for conversion to speech or voice format. After the message is converted to speech format, the server sends the messages back to the user'"'"'s mobile device and notifies the user of the email message and then plays the message back to the user through a media player upon demand.

Claims

1. An email system comprising:

a mobile device;

a server configured to receive an email directed to the mobile device, the email including text, the server further configured to convert said text in the email into an audio file; and

the mobile device in communication with the server over a wireless link to receive the email from the server, the mobile device configured to include a media player, the media player configured to receive the audio file from the server and play back the audio file as a voice message on the mobile device;

wherein the mobile device is further configured for;

executing a listening application for identifying the email, the email being a text message;

retrieving a message body from the text message, the message body including the text which is suitable for audio conversion;

retrieving header information from the text message;

retrieving a device specific identifier indicative of the mobile device; and

sending the message body, header information, and device specific identifier to the server; and

wherein the server is further configured for;

receiving the text message from the mobile device;

performing a text-to-speech (TTS) conversion on the text message to generate audio data corresponding to the message body retrieved from the text message; and

loading the audio data into the audio file, the audio file having an audio file format recognized by the mobile device.

2. The email system as recited in claim 1, wherein said mobile device is a cellular phone.

3. The email system as recited in claim 1, wherein said mobile device is a personal digital assistant.

4. The email system of claim 1 further comprising an interface to the server for performing the conversion to an audio format, the server being a standalone node configured for coupling with the mobile device, the server avoiding the need for a unified messaging system having multiple users recognized by the system.

5. The email system of claim 1 wherein the server is configured to send the audio file to the mobile device using the device specific identifier.

6. The email system of claim 5 further comprising a context engine, the context engine having a filter configured to remove characters in the text message that can not be converted to an equivalent speech component.

7. The email system of claim 6 wherein the mobile device further comprises an enabled state, the enabled state responsive to a user for activating the listening for an incoming text message, and selectively performing the conversion based on the state.

8. The email system of claim 7 further comprising an interface for sending data indicative of the conversion to a subscription application, the subscription application configured to correlate the conversion to a particular user based on a fee arrangement.

9. The email system of claim 7 wherein the server produces the audio file in a format selected from a group consisting of:

WAV and MP3.

10. The email system of claim 1, wherein the server is configured to provide notification to the mobile device that the audio file is available for retrieval by the mobile device for playback on the media player.

11. The email system of claim 10, wherein the text in the email is written in a first language and the server is configured to convert the text into a second language prior to conversion of the email into the audio file.

12. The email system of claim 11, wherein playback of the audio file by the mobile device includes a spoken version of the text in the second language.

13. The email system of claim 10, wherein the server is configured to produce the audio file in accordance with a gender of voice selected by a user of the mobile device.

14. The email system of claim 10, wherein the mobile device is configured to produce an audio tone to indicate receipt of the audio file from the server.

15. The email system of claim 10, wherein client software in the mobile device is configured to provide visual notification indicating availability of the audio file from the server.