Multi-function telephone dialer display

• US 5,835,581 A
• Filed: 09/20/1996
• Issued: 11/10/1998
• Est. Priority Date: 09/20/1996
• Status: Expired due to Fees

• Current Assignee: Holtek Semiconductor Incorporated, Sigma Micro Corporation
• Original Assignee: Holtek Microelectronics, Inc. (United Microelectronics Corporation)
• Inventors: Chang, Chern-Jsair, Wu, Rong-Tyan
• Primary Examiner(s): Zele, Krista
• Assistant Examiner(s): MORELLA, TIMOTHY
• Application Number:
  US08/717,496
• Time in Patent Office: 781 Days
• Field of Search: 379/96, 379/350, 379/352, 379/354, 379/355, 379/90, 379/93, 379/142, 379/90.01, 379/93.01, 379/93.05, 379/93.06, 379/93.17, 379/93.23, 345/87, 345/102
• US Class Current: 379/142.17
• CPC Class Codes: H04M 1/573 Line monitoring circuits for detecting caller identification

Abstract

A multi-function telephone dialer display device which is equipped with a display screen for displaying the use status and the caller identification information, and a dialer for responding to data input and for generating a data signal to the display screen to display the corresponding use status. When dialing with numerical keys, with standard non-numerical keys or when setting up a function, the data signal is coded into a numerical code representing the original digit, coded into a standard non-numerical code representing the original non-numerical keys or coded into a function key code representing the function, respectively. A display driver is electrically connected to the display screen, to the telephone dialer and to a caller data signal line for receiving and processing the data signals, the timing signals and the identification signal representing the caller information, and then transferring the result of the processing to the display screen for displaying a corresponding status and caller identification information.

Claims

1. A multi-function telephone dialer display device comprising:

a liquid crystal display (LCD) screen for displaying telephone operation status and caller identification data;

a telephone dialer for responding to data input and generating signals to the display screen for displaying corresponding status;

said dialer comprising a detector connected to a telephone rotary dial or a telephone keypad, a telephone hook switch for receiving and detecting input data of said rotary dial or telephone keypad, a register electrically connected to said detector for storing said input data, a coder to code said input data and to generate data signals, a controller electrically connected to said detector, and a register and a coder for responding to the input data detected by said detector and for controlling the operation of said register and coder;

said dialer comprises an output pin to output a data signal and its associated timing signal, said data signal is coded into a numerical code representing an original digit, a standard non numerical code representing original non-numerical keys, or a function key code representing the function when dialing with numerical keys, with standard non-numerical keys, or when setting up functions, respectively; and

a display driver comprises a dial receiver for receiving data signals from said telephone dialer, a decoder for receiving data signals from said dial receiver and a caller identification signal transmitted through telephone company wiring and converting to the required format for a liquid crystal display, a multi-potential generator for generating various electrical potentials of different sizes and polarities for said liquid crystal display, and a driver electrically connected to said decoder and said multi-potential generator for combining the output of a first and a second decoder and said multi potential generator and for generating signals to drive said liquid crystal display;

said display driver electrically connected to said display screen, said telephone dialer and a caller data signal line for receiving and processing said data signal, said timing signal and a caller identification signal representing the caller information sent from the caller data signal line, and transferring the result of processing to said display screen for displaying a corresponding use status and a caller identification information.

2. A device according to claim 1, wherein said display driver further comprises a controller electrically connected to said first and said second decoder, said multi-potential generator and said driver for controlling the operation of said display driver.

3. A device according to claim 1, wherein said caller identification signal is a frequency shift keying (FSK) signal modulated by a frequency shift keying method.

4. A device according to claim 3, wherein said decoder comprises:

a first decoder for receiving data signals from said dial receiver and converting them into a display screen required format; and

a second decoder for receiving said frequency shift keying signals representing a caller information transmitted through said telephone company wiring and converting into a display screen required format.

5. A device according to claim 4, wherein said second decoder composes:

a frequency shift keying device electrically connected to said telephone company wiring for obtaining a digital signal through frequency shift keying; and

a digital decoder unit electrically connected to said frequency shift keying device for decoding said digital signal into said required display screen format.

6. A device according to claim 5, wherein said second decoder further comprises a wiring interface device electrically connected to said telephone company wiring and said frequency shift keying device for modulating said electric potential, for sizing an alternating current signal, and for filtering out noises and other unwanted signals such that the signals are within a working range of said frequency shift keying device.

7. A device according to claim 1, wherein said caller identification signal transmitted through a signal line and inputted to said decoder is a digital frequency shift keying signal representing said caller identification transmitted through the telephone company wiring wherein said electrical potential, a size of alternating current signal are modulated and noises and other unwanted signals are filtered out by a wiring interface device before inputting to said frequency shift keying device.

8. A multi-function telephone dialer display device comprising:

a liquid crystal display (LCD) screen for displaying telephone operation status and caller identification data;

a telephone dialer for responding to data input and generating signals to the display screen for displaying corresponding status;

said dialer comprises an output pin to output a data signal and its associated timing signal, said data signal is coded into a numerical code representing an original digit, a standard non numerical code representing original non-numerical keys, or a function key code representing the function when dialing with numerical keys, with standard non-numerical keys, or when setting up functions, respectively, a detector connected to a telephone rotary dial or a telephone keypad;

a telephone hook switch for receiving and detecting input data of said rotary dial or telephone keypad;

a register electrically connected to said detector for storing said input data; and

a coder to code said input data and to generate said data signals;

a controller electrically connected to said detector, said register and said coder for responding to the input data detected by said detector and for controlling the operation of said register and coder;

an induction device for detecting the degree of brightness near said display;

a display night light device electrically connected to said induction device for emitting light based on the degree of brightness near said display detected by said induction device for achieving desirable lighting effect;

a brightness control device, electrically connected to said induction device and said display night light device for controlling the brightness of the display night light device based on the degree of brightness near said display detected by said induction device; and

a display driver electrically connected to said display screen, said telephone dialer and a caller data signal line for receiving and processing said data signal, said timing signal and said caller identification signal representing the caller information sent from the caller data signal line, and transferring the result of processing to said display screen for displaying a corresponding use status and a caller identification information;

said display driver further comprising a dial receiver for receiving data signals from said telephone dialer.

9. A device according to claim 8, wherein said display driver further comprises:

a dial receiver for receiving data signals from said telephone dialer;

a decoder for receiving data signals from said dial receiver and a caller identification signal transmitted through telephone company wiring and converting to the required format for the display screen; and

a driver electrically connected to said decoder for combining the output of a first and a second decoder, and for generating signals to drive a light emitting diode display screen.

10. A device according to claim 9, wherein said display driver further comprises a controller electrically connected to said first decoder, said second decoder and said driver for controlling the operation of a driver.

11. A multi-function telephone dialer display device comprising:

a liquid crystal display (LCD) screen for displaying telephone operation status and caller identification data;

a telephone dialer for responding to data input and generating signals to the display screen for displaying corresponding status;

said dialer comprises an output pin to output a data signal and its associated timing signal, said data signal is coded into a numerical code representing an original digit, a standard non numerical code representing original non-numerical keys, or a function key code representing the function when dialing with numerical keys, with standard non-numerical keys, or when setting up functions, respectively, a detector connected to a telephone rotary dial or telephone keypad for receiving and detecting input data of said rotary dial or said telephone keypad;

a register electrically connected to said detector for storing said input data;

a coder for coding said input data and for generating said data signals;

a controller electrically connected to said detector, said register and said coder for responding to an input data detected by said detector and for controlling the operation of said register and said coder;

a display driver comprises a dial receiver for receiving data signals from said telephone dialer, a decoder for receiving data signals from said dial receiver and a caller identification signal transmitted through telephone company wiring and converting to the required format for the liquid crystal display, a dial detector for receiving data signals from a telephone hook switch, a multi potential generator for generating various electrical potentials of different sizes and polarities for said liquid crystal display, a driver electrically connected to a first and a second decoder and said multi-potential generator for combining the output of a decoder and said multi-potential generator and for generating the signals to drive said liquid crystal display, a controller electrically connected to said first and said second decoder, said multi-potential generator and said driver for controlling the operation of a driver; and

said display driver electrically connected to said display screen, said telephone dialer and a caller data signal line for receiving and processing said data signal, said timing signal and a caller identification signal representing the caller information sent from the caller data signal line, and transferring the result of processing to said display screen for displaying a corresponding use status and a caller identification information.

12. A device according to claim 11 further comprising:

an induction device for detecting the degree of brightness near said display;

a display night device electrically connected to said induction device for emitting light based on the degree of brightness near said display detected by said induction device for achieving a desirable lighting effect; and

a brightness control device electrically connected to said induction device and said display night light device for controlling the brightness of said display night light device based on the degree of brightness near said display detected by said induction device.