US Patent No: 6,992,610

Number of patents in Portfolio can not be more than 2000

PWM signal generator and PWM signal generating method

Stats

ALSO PUBLISHED AS: 20040212524
See full text
ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A PWM signal generator and generating method for generating one or two pulses having a pulse width or a total pulse width corresponding to a value represented by a pulse code modulation digital signal and placed in a symmetric positional relationship with respect to the position of one half of a predetermined length. A first pulse and a second pulse are generated in accordance with a value represented by the digital signal. The difference in pulse width between the first and second pulses is output as a first pulse width modulation signal. When the value represented by the digital signal is zero, the first pulse and second pulse are equal in pulse width. When the value represented by the digital signal changes by one, one of the first and second pulses does not change in pulse width, while the other of the first and second pulse changes in pulse width by two slots.

Loading the Abstract Image... loading....

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
PIONEER CORPORATIONTOKYO2115

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Komarura, Mitsuya Tsurugashima, JP 2 6

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SONY CORPORATION (3)
5,021,788 Digital analog converter 17 1990
5,148,168 Digital-to-analog converter using pulse-width modulation 23 1991
6,795,004 Delta-sigma modulation apparatus and signal amplification apparatus 21 2003
 
VICTOR COMPANY OF JAPAN, LTD. (1)
5,008,675 Digital to analog converter using pulse width modulator for independently setting edge position 16 1989

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SAMSUNG ELECTRONICS CO., LTD. (2)
7,443,235 Audio system and processing method of storing and reproducing digital pulse width modulation signal 2 2007
7,782,238 Asymmetric PWM signal generator, method thereof, and data processing apparatus including the same 1 2008
 
SYNOPSYS, INC. (2)
7,733,171 Class D amplifier having PWM circuit with look-up table 4 2007
7,956,681 Class D amplifier having PWM circuit with look-up table 2 2010
 
EQUIPHON, INC. (1)
8,306,106 Multi-edge pulse width modulator with non-stationary residue assignment 0 2010
 
SILICON LABORATORIES INC. (1)
8,115,663 Mismatch-immune digital-to-analog converter 0 2010

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 31, 2017
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00