Portable device using inductive antenna to receive data transmitted via modulating vertical or horizonal line synchronization signals of a swept frame video display monitor

• US 5,978,656 A
• Filed: 12/11/1996
• Issued: 11/02/1999
• Est. Priority Date: 12/28/1995
• Status: Expired due to Fees

• Current Assignee: Asulab SA (The Swatch Group AG)
• Original Assignee: Asulab SA (The Swatch Group AG)
• Inventors: Pollini, Alexandre, Zellweger, Emil, Farine, Pierre-Andre
• Primary Examiner(s): Luu, Le Hien
• Application Number:
  US08/761,980
• Time in Patent Office: 1,056 Days
• Field of Search: 368/327, 368/10, 348/460, 348/196, 348/143, 348/15, 380/25, 395/112, 345/2, 345/156, 343/714, 455/41, 455/66, 455/344, 455/23
• US Class Current: 455/41.1
• CPC Class Codes: G04G 21/00 Input or output devices integrated in time-pieces
• CPC Class Codes: G04R 60/02 Antennas also serving as components of clocks or watches, e.g. motor coils
• 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 7/08 Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band , e.g. by time division H04N7/007 takes precedence

Abstract

Data transmission system comprising a data transmitter (1) including:

swept frame display means (2), and

a generator of composite video signals (20, 22) to control the operation of said swept frame display means (2); and

a portable information detection device (7) for receiving said transmitted data by said data transmitter (1).

The data transmitter (1) further comprises means (23) for modulating at least one of the elementary signals constituting said composite video signals with the data to be transmitted, and said information detection device (7) further comprises any inductive antenna (44, 45) for detecting said modulated elementary signal.

Claims

1. A data transmission system comprising a data transmitter (1) and a portable information detection device (7) capable of receiving data transmitted by said data transmitter (1),

wherein said data transmitter (1) comprises

swept frame display means (2),

a composite video signal generator (20, 22) comprising a vertical and/or horizontal line signal generator to control the operation of said swept frame display means (2), and

modulation means (23) of at least one of the elementary signals constituting said composite video signals with said data to be transmitted, said modulation means (23) being adapted to modulate one of said line synchronization signals;

and wherein said portable information detection device (7) intended to receive said data transmitted by said data transmitter (1) comprises

an inductive antenna (44,

     45) to detect said modulated line synchronization signal.

2. The data transmission system according to claim 1, wherein said modulation means (23) are adapted to modulate said horizontal line synchronization signal.

3. The data transmission system according to claim 2, wherein said portable information detection device (7) further comprises

analogue display means, and

a stepper motor to control said analogue display means, said inductive antenna (44, 45) comprising a coil of said stepper motor.

4. The data transmission system according to claim 2, wherein said inductive antenna (44, 45) further comprises a capacitor realized in a form of an integrated circuit.

5. The data transmission system according to claim 1, wherein said modulation means (23) are adapted to modulate the amplitude of said modulated line synchronization signal.

6. The data transmission system according to claim 5, wherein said modulation means (23) are adapted to modulate said vertical line synchronization signal.

7. The data transmission system according to claim 5, wherein said portable information detection device (7) further comprises

analogue display means, and

a stepper motor to control said analogue display means, said inductive antenna (44, 45) comprising a coil of said stepper motor.

8. The data transmission system according to claim 5, wherein said inductive antenna (44, 45) further comprises a capacitor in a form of an integrated circuit.

9. The data transmission system according to claim 1, wherein said portable information detection device (7) further comprises

analogue display means, and

a stepper motor to control said analogue display means, said inductive antenna (44, 45) comprising a coil of said stepper motor.

10. The data transmission system according to claim 9, wherein said inductive antenna (44, 45) further comprises a capacitor in a form of an integrated circuit.

11. The data transmission system according to claim 1, wherein said inductive antenna (44, 45) further comprises a capacitor in a form of an integrated circuit.

12. The data transmission system according to claim 11, wherein the frequency of said modulated lines synchronization signal is between 10 kHz and 100 kHz.

13. The data transmission system according to claim 1, wherein the frequency of said modulated lines synchronization signal is between 10 kHz and 100 kHz.