FM receiving module for PDA/notebook

• US 20040137943A1
• Filed: 01/10/2003
• Published: 07/15/2004
• Est. Priority Date: 01/10/2003
• Status: Abandoned Application

• Current Assignee: Prolink Microsystems Corporation
• Original Assignee: Prolink Microsystems Corporation
• Inventors: Tseng, Fuh-Shan
• Application Number:
  US10/339,388
• Publication Number:
  US 20040137943A1
• Time in Patent Office: Days
• US Class Current: 455/556.2
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations

Abstract

A FM receiving module for a PDA/notebook is provided. The FM receiving module can receive a FM frequency and include an audio jack. The present invention is connected to a PDA or a notebook through a CF or SD interface and can control the FM receiving module through a control program. The control program can control the method of searching a FM frequency or memorizing a FM frequency and also can control the audio signal which will be produced from the audio jack.

Claims

1. A FM receiving module for a PDA (Personal Digital Assistant)/notebook, comprising:

a control program for producing a control data;

a control chip for producing a control signal;

a CF interface circuit for receiving said control data produced from said control program and transmitting said control data to said control chip;

a FM receiver for being controlled by said control chip to receive a FM audio signal;

an audio controller for being controlled by said control signal produced from said control chip to process said FM audio signal transmitted from said FM receiver; and

an audio amplification circuit for receiving said FM audio signal which is processed by said audio controller and transmitting said FM audio signal to an audio jack.

2. The FM receiving module for a PDA/notebook according to claim 1, wherein said control program comprises an application program, a driver, and a CF interface driver and controls a FM frequency or an audio signal.

3. The FM receiving module for a PDA/notebook according to claim 1, wherein said CF interface circuit may be a SD interface circuit.

4. The FM receiving module for a PDA/notebook according to claim 2, wherein said CF interface driver may be a SD interface driver.

5. The FM receiving module for a PDA/notebook according to claim 2, wherein said FM frequency control comprises radio station presetting and automatic search;

wherein said radio station presetting is proceeded by said application program to select a radio frequency firstly and then by a 3-wire control interface to load said data into a FM control register; and

said automatic search is proceeded by said application program to select said automatic search firstly and then by said 3-wire control interface to load said radio frequency into said FM control register, read said frequency data in said FM control register for confirming if said frequency data is correct or not, and load a correct frequency data into said FM control register.

6. The FM receiving module for a PDA/notebook according to claim 2, wherein said audio control comprises volume control and mute control;

wherein said volume control is proceeded by said application program to adjust a degree of said volume firstly and then by an I²C control interface to load said data into said audio control register; and

said mute control is proceeded by said application program to select or lift said mute firstly and then by said I²C control interface to load said data into a volume control register.

7. The FM receiving module for a PDA/notebook according to claim 6, wherein said I²C has a data format of:

“

START”

+“

Address byte”

+“

A CK”

+“

DATA”

+“

ACK”

+“

DATA”

+“

ACK”

+“

STOP”

8. The FM receiving module for a PDA/notebook according to claim 7, wherein said “

Address byte”

has a vale of “

10001000”

, “

11000001”

or “

11000000”