Cellular phone with an audio/video output

• US 20030130009A1
• Filed: 04/10/2002
• Published: 07/10/2003
• Est. Priority Date: 01/07/2002
• Status: Abandoned Application

• Current Assignee: Compal Electronics Incorporated
• Original Assignee: Compal Electronics Incorporated
• Inventors: Kung, Shao-Tsu
• Application Number:
  US10/063,309
• Publication Number:
  US 20030130009A1
• Time in Patent Office: Days
• US Class Current: 455/557
• CPC Class Codes: H04B 1/207 with an audio or audio/video bus for signal distribution H04B1/205 takes precedence
• CPC Class Codes: H04M 1/72409 by interfacing with external accessories hands-free H04M1/60
• CPC Class Codes: H04N 2007/145 Handheld terminals
• CPC Class Codes: H04N 21/4126 The peripheral being portable, e.g. PDAs or mobile phones
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 5/38 Transmitter circuitry for the transmission of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04N 5/44 Receiver circuitry for the reception of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display

Abstract

A cellular phone includes a communication circuit, a control module, and a video module. The communication circuit is used to receive an image signal and transmit a radio-frequency (RF) signal via radio transmission. The control module includes a processor, a button, and a display panel. A microphone is used to receive an analog acoustic wave and convert the analog acoustic wave into an audio signal. The conversion circuit is used to convert the image signal into a video signal. The video signal includes an analog brightness signal. The output terminal is used to transmit the video signal to a television. The television includes a screen for displaying an image according to the brightness signal. The brightness of the image changes from bright to dark when a level of the brightness signal increases from a first level corresponding to the bright image to a second level corresponding to the dark image.

Claims

1. A cellular phone comprising:

a communication circuit for receiving an image signal and transmitting a radio-frequency (RF) signal via radio transmission;

a control module comprising;

a processor for controlling the cellular phone;

at least a button electrically connected to the processor for inputting a control signal to the processor when a user presses the button; and

a display panel electrically connected to the processor for displaying an operating status of the cellular phone;

a first audio module comprising;

a microphone for receiving an analog acoustic wave and converting the analog acoustic wave into a first audio signal; and

a modulator electrically connected to the microphone for modulating the first audio signal into the RF signal; and

a video module comprising;

a conversion circuit electrically connected to the communication circuit for converting the image signal into a video signal, the video signal comprising an analog brightness signal; and

an output terminal electrically connected to the conversion circuit for transmitting the video signal to a television;

wherein the television comprises a screen for displaying an image according to the brightness signal, and a brightness of the image accordingly changes from bright to dark when a level of the brightness signal increases from a first level corresponding to the bright image to a second level corresponding to the dark image.

2. The cellular phone of claim 1 wherein the video signal further comprises a color burst signal, which is carried by a sine wave, for making the screen display a color image.

3. The cellular phone of claim 1 wherein the video signal further comprises a horizontal synchronization signal for controlling a horizontal synchronization frequency of the screen.

4. The cellular phone of claim 1 wherein the video signal conforms to an image format defined by the National Television SystemCommittee (NTSC).

5. The cellular phone of claim 1 wherein the transmission circuit is capable of receiving a communication signal transmitted by radio transmission, and the cellular phone further comprises a second audio module comprising a demodulator electrically connected to the transmission circuit for converting the communication signal into a second audio signal and a speaker electrically connected to the demodulator for transforming the second audio signal into a corresponding acoustic wave.