JP2010035117 2010-02-12
SARASHINA YASUHIRO; MIKAMI SATOSHI
D & M HOLDINGS INC
Images from patent below, the rest of the patent is in Japanese.
Just found this and thought some might find it of interest?
rgds
jms
SARASHINA YASUHIRO; MIKAMI SATOSHI
D & M HOLDINGS INC
PROBLEM TO BE SOLVED:
To improve the quality of an audio signal to be output in a current feedback amplifier that amplifies the audio signal.
SOLUTION:
The current feedback amplifier that amplifies an audio signal is configured so as to compose an amplifier circuit that amplifies an audio signal, and a feedback circuit for an audio signal and a feedback circuit for a direct current component independently of each other in order to improve the quality of the audio signal output from the amplifier circuit, and to have a signal path simplified by eliminating a complicated signal path.
Images from patent below, the rest of the patent is in Japanese.
Just found this and thought some might find it of interest?
rgds
jms
Attachments
Last edited:
Quote from
espacenet - Bibliographic data
Abstract of JP 2010035117 (A)
PROBLEM TO BE SOLVED: To improve the quality of an audio signal to be output in a current feedback amplifier that amplifies the audio signal. ; SOLUTION: The current feedback amplifier that amplifies an audio signal is configured so as to compose an amplifier circuit that amplifies an audio signal, and a feedback circuit for an audio signal and a feedback circuit for a direct current component independently of each other in order to improve the quality of the audio signal output from the amplifier circuit, and to have a signal path simplified by eliminating a complicated signal path. ; COPYRIGHT: (C)2010,JPO&INPIT
.........................................................................
I think, Jan Didden had a similar idea - go to post #3182 about
http://www.diyaudio.com/forums/soli...terview-error-correction-319.html#post1472359
and
http://www.diyaudio.com/forums/soli...ack-called-pax-what-about-vitus-ss-101-a.html
espacenet - Bibliographic data
Abstract of JP 2010035117 (A)
PROBLEM TO BE SOLVED: To improve the quality of an audio signal to be output in a current feedback amplifier that amplifies the audio signal. ; SOLUTION: The current feedback amplifier that amplifies an audio signal is configured so as to compose an amplifier circuit that amplifies an audio signal, and a feedback circuit for an audio signal and a feedback circuit for a direct current component independently of each other in order to improve the quality of the audio signal output from the amplifier circuit, and to have a signal path simplified by eliminating a complicated signal path. ; COPYRIGHT: (C)2010,JPO&INPIT
.........................................................................
I think, Jan Didden had a similar idea - go to post #3182 about
http://www.diyaudio.com/forums/soli...terview-error-correction-319.html#post1472359
and
http://www.diyaudio.com/forums/soli...ack-called-pax-what-about-vitus-ss-101-a.html
Quote from
espacenet - Bibliographic data
Abstract of JP 2010035117 (A)
PROBLEM TO BE SOLVED: To improve the quality of an audio signal to be output in a current feedback amplifier that amplifies the audio signal. ; SOLUTION: The current feedback amplifier that amplifies an audio signal is configured so as to compose an amplifier circuit that amplifies an audio signal, and a feedback circuit for an audio signal and a feedback circuit for a direct current component independently of each other in order to improve the quality of the audio signal output from the amplifier circuit, and to have a signal path simplified by eliminating a complicated signal path. ; COPYRIGHT: (C)2010,JPO&INPIT
.........................................................................
I think, Jan Didden had a similar idea - go to post #3182 about
http://www.diyaudio.com/forums/soli...terview-error-correction-319.html#post1472359
and
http://www.diyaudio.com/forums/soli...ack-called-pax-what-about-vitus-ss-101-a.html
I think this patent is pretty non-sensical. I fail to see how having dual feedback loops (DC and AC separate) improve anything in the 'audio quality' whatever THAT means. It just adds MORE complexity, and it isn't even new.
Hawksford's error correction concept which is the basis of Bob Cordell's and my paX amp is different, although, in the final analysis, it IS a form of NFB.
jan didden
JP2010035117 2010-02-12
SARASHINA YASUHIRO; MIKAMI SATOSHI
D & M HOLDINGS INC
Images from patent below, the rest of the patent is in Japanese.
Just found this and thought some might find it of interest?
rgds
jms
That patent shouldnt have been issued as it is vitually a rip off of the Alexander amp.
The amplifiers are absolutely different, than the Alexander amp.
The principals used are the same....
The principals used are the same....
Maybe yes. Only the sound is much better.
Sajti
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Solid State
- Denon/Marantz Current Feedback amp patent