JPS621440U - - Google Patents

Info

Publication number

JPS621440U

JPS621440U JP1985092678U JP9267885U JPS621440U JP S621440 U JPS621440 U JP S621440U JP 1985092678 U JP1985092678 U JP 1985092678U JP 9267885 U JP9267885 U JP 9267885U JP S621440 U JPS621440 U JP S621440U

Authority

JP

Japan

Prior art keywords

circuit

signal detection

detection circuit

ringer signal

ringer

Prior art date

1985-06-19

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Pending

Links

• Espacenet
• Global Dossier
• Discuss

• 238000001514 detection method Methods 0.000 claims description 5
• 230000005236 sound signal Effects 0.000 claims 1
• 238000010586 diagram Methods 0.000 description 2
• 230000003321 amplification Effects 0.000 description 1
• 239000003990 capacitor Substances 0.000 description 1
• 238000003199 nucleic acid amplification method Methods 0.000 description 1