Pager with a television function

• US 5,138,312 A
• Filed: 02/05/1991
• Issued: 08/11/1992
• Est. Priority Date: 07/16/1987
• Status: Expired due to Term

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: Kobayashi, Keiichi, Tsukamoto, Akihiro
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Weissman, Peter
• Application Number:
  US07/651,452
• Time in Patent Office: 553 Days
• Field of Search: 340/825.44, 340/825.47, 340/825.26, 340/825.27, 340/311.1, 358/241, 358/233, 358/85, 358/194.1, 358/254, 455/355, 455/352, 455/603, 379/96, 368/11
• US Class Current: 340/7.56
• CPC Class Codes: G08B 5/225 Display details

Abstract

A pager has a TV receiver for receiving a TV radio wave which causes the display to display a TV image. The pager has a color designation circuit for designating a display color of a message. The color designation circuit designates the display color of the message in accordance with a predetermined method for emphasizing the message. The display then displays the message in the designated color.

Claims

1. A pager with a television function, comprising:

television receiving means for receiving a television signal;

a display means, having red pixels, green pixels and blue pixels, for displaying a color image;

an analog-to-digital conversion circuit for converting the television signal received by said television receiving means to a digital red-green-blue signal indicating a display color of a television image;

message receiving means for receiving a calling signal including signal data and a color signal indicating a display color of the message data;

control means for decoding the calling signal received by said message receiving means, and for generating message data and color selection data including a red designating signal indicating a lighting of a red pixel, a green designating signal indicating a lighting of a green pixel and blue designating signal indicating a lighting of a blue pixel;

message color selection means for generating a message red-green-blue signal indicating a display color of a message in response to the color selection data, said message color selection means including first, second and third gate means, said first gate means receiving the message data and the red designating signal, said second gate means receiving the message data and the green designating signal, and said third gate means receiving the message data and the blue designating signal, said first to third gate means outputting the message data in response to the red, green and blue designating signals as the message red-green-blue signal; and

synthesizing means for synthesizing the digital red-green-blue signal supplied from said analog-to-digital conversion circuit and the message red-green-blue signal supplied from said color selection means;

said display means displaying the television signal received from said television signal receiving means or the message data received by said message receiving circuit in response to a signal supplied from said synthesizing means.

2. The pager according to claim 1, wherein said control means includes means for changing a display color of the message data by changing the color selection data.

3. The pager according to claim 1, wherein a digital RGB signal output from said analog-to-digital conversion circuit includes an n-bits red signal indicating gradation of the red pixel, an n-bits green signal indicating gradation of the green pixel and an n-bits blue signal indicating gradation of the blue pixel, and wherein the red designating signal, the green designating signal and the blue designating signal are each of 1-bit;

wherein said synthesizing means includes an expansion means which expands each of the output data of said first to third gate circuits to n-bits data, and

said synthesizing means outputs one of the outputs of said analog-to-digital conversion circuit and said expansion circuit.

4. A pager with a television function, comprising:

a television receiving circuit for receiving a television signal;

display means for displaying an image;

an analog-to-digital conversion circuit responsive to the television signal received by said television receiving circuit, for converting the received television signal to a digital signal in synchronism with a first clock signal;

a message receiving circuit for receiving a calling signal including a message data;

control means, coupled to said message receiving circuit, for extracting the message data from a received calling signal;

an address counter which is reset in response to a second clock signal (ODT) and which counts-up in response to a third clock signal (OL);

a display buffer having memory areas having a memory capacity corresponding to one frame of the image, for storing character codes to be displayed on said display means, the memory areas being addressed by an output signal of said address counter;

a character generator, for generating character pattern data in parallel in response to character codes which are output from said display buffer and an output signal from said address counter;

a parallel-serial conversion circuit for latching the character pattern data in synchronism with the third clock signal (ODT), for converting a latched parallel signal to a serial signal, and for outputting the serial signal in synchronism with the first clock signal;

a synthesizing circuit for synthesizing the serial signal from said parallel-serial conversion circuit and said analog-to-digital conversion circuit, and for outputting a display signal; and

a timing signal generating circuit for generating the first to third clock signals;

said display device displaying a television image received from said television receiving circuit and received message data received by said message receiving circuit in response to a display signal supplied from said synthesizing circuit, said display device including a scanning electrodes and signal electrodes, and starting a scanning of the scanning electrodes in synchronism with the second clock signal, and scanning the scanning electrodes in synchronism with the third clock signal.