Modulation apparatus patents

Modulation apparatus

Filed: March 19th, 1998 [Granted]

Patent Number: 6034574

United States Patent [w] Sato US006034574A [ii] Patent Number: [45] Date of Patent: 6034574 Mar. 7, 2000 [54] MODULATION APPARATUS [75] Inventor: Hideaki ...

Frequency modulation apparatus

Filed: March 16th, 2005 [Pending]

Assignee: MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Patent Application Number: 11080680

11 is a block diagram showing the configuration of a frequency modulation apparatus according to Embodiment 4 of the present invention.

Optical modulation apparatus

Filed: June 22nd, 1994 [Granted]

Assignee: NEC Corporation

Patent Number: 5521749

3 is a block diagram showing an optical modulation apparatus in a first preferred embodiment according to the 5 invention, FIG. 4A is an explanatory diagram ...

Frequency modulation apparatus

Filed: January 18th, 2000 [Granted]

Assignee: Matsushita Electric Industrial Co Ltd

Patent Number: 6512619

1 FREQUENCY MODULATION APPARATUS BACKGROUND OF THE INVENTION 1. Field of the Invention 5 The present invention relates to a modulation apparatus for ...

AM data multiplexing modulation apparatus

Filed: June 5th, 1997 [Granted]

Assignee: Kabushiki Kaisha Kenwood

Patent Number: 5940365

1 AM DATA MULTIPLEXING MODULATION APPARATUS BACKGROUND OF THE INVENTION 1. Field of the Invention 5 The present invention relates to an AM data multiplexing ...

Amplitude modulation apparatus and method

Filed: June 15th, 1984 [Granted]

Assignee: Baptist Medical Center of Oklahoma Inc

Patent Number: 4617536

An amplitude modulation apparatus for modulating a carrier signal with a modulating signal, said apparatus comprising: modulating signal adjustment means ...

Two-point frequency modulation apparatus

Filed: March 14th, 2005 [Granted]

Assignee: Panasonic Corporation

Patent Number: 7706495

A wireless transmission apparatus comprising: the frequency modulation apparatus of claim 1; and an amplifier that amplifies an RF modulation signal out- 30 ...

Multiple-wavelength optical modulation apparatus

Filed: April 12th, 2005 [Granted]

Assignee: National Institute of Information and Communications Technology Incorporated Administrative Agency

Patent Number: 7522844

25 Various lightwaves are included in the case of the above modulation apparatus , such as sidebands of the Xa lightwave modulated by an 8 GHz signal and ...