Title:
ANALOG VALUE ADJUSTING CIRCUIT, DISPLAY DRIVE CIRCUIT, AND METHOD FOR ADJUSTING ANALOG VALUE
Document Type and Number:
Japanese Patent JP3843974
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an analog value adjusting circuit capable of reducing the time for the process of cutting a fuse element; a display drive circuit including the adjusting circuit; and a method for adjusting analog values using the adjusting circuit.
SOLUTION: The analog value adjusting circuit 90 includes a fuse circuit 10 that outputs fuse data FS1-FS3 whose values vary depending on whether fuse elements FE1-FE3 are cut or uncut, and an analog value output circuit 30 that outputs an analog value ANQ adjusted over a given adjustable range according to the fuse data FS1-FS3. The analog value output circuit 30 outputs a typical analog value when the fuse data FS1-FS3 indicate that all the fuse elements FE1-FE3 are uncut. The output circuit outputs the analog value which is adjusted in such a manner that adjustable width gets broader as the value gets closer to the maximum or minimum value of the adjustable range, and gets narrower as the value gets closer to the typical value.
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| JPH0876869 | MULTIOUTPUT CURRENT CIRCUIT DEVICE |
Inventors:
Masaaki Abe
Application Number:
JP2003336923A
Publication Date:
November 08, 2006
Filing Date:
September 29, 2003
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G05F1/56; H01L27/04; G11C17/18; H01L21/822; H03G3/12; H03M1/10; H03M1/76; (IPC1-7): G05F1/56; H01L21/822; H01L27/04; H03G3/12
Domestic Patent References:
| JP3172906A | ||||
| JP2001273041A | ||||
| JP2003086700A | ||||
| JP2002026258A | ||||
| JP2003152092A | ||||
| JP62069240A |
Attorney, Agent or Firm:
Takekoshi Noboru
Enami Tomokazu
Yasushi Kuroda
Inoue Ichi
Yukio Fuse
Mitsue Obuchi
Enami Tomokazu
Yasushi Kuroda
Inoue Ichi
Yukio Fuse
Mitsue Obuchi