JPH0262859U - - Google Patents
Info
- Publication number
- JPH0262859U JPH0262859U JP14139988U JP14139988U JPH0262859U JP H0262859 U JPH0262859 U JP H0262859U JP 14139988 U JP14139988 U JP 14139988U JP 14139988 U JP14139988 U JP 14139988U JP H0262859 U JPH0262859 U JP H0262859U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- ringtone
- codec
- ring tone
- speaker
- Prior art date
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Description
第1図はこの考案の一実施例によるデイジタル
電話機のブロツク図、第2図は従来のデイジタル
電話機のブロツク図である。
図中符号3はフレーム多重分離部、4は網制御
信号、5は音声信号、6はデータ信号、7はコー
デツク、8は処理部、9は着信音信号生成部、1
8はパワーダウン信号、21は抵抗分圧回路。な
お図中同一符号は同一または相当部分を示す。
FIG. 1 is a block diagram of a digital telephone according to an embodiment of this invention, and FIG. 2 is a block diagram of a conventional digital telephone. In the figure, numeral 3 is a frame demultiplexing unit, 4 is a network control signal, 5 is an audio signal, 6 is a data signal, 7 is a codec, 8 is a processing unit, 9 is a ring tone signal generation unit, 1
8 is a power down signal, 21 is a resistor voltage divider circuit. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
とデータ端末用デイジタルデータ信号と網制御用
の制御信号を交換機または網との間で送受し、着
信時に着信音信号を生成する着信音生成部、前記
着信音生成部からの着信音信号を増幅してスピー
カを駆動するスピーカアンプを備えたデイジタル
電話機において、着信音信号の経路である前記着
信音生成回路とスピーカアンプとの間に抵抗分圧
回路を設け、前記コーデツクの消費電力を制御す
るパワーダウン信号により抵抗分圧回路の分圧比
を制御することを特徴とするデイジタル電話機の
着信音発生回路。 a ring tone generation unit that transmits and receives a signal obtained by digitizing voice using a codec, a digital data signal for a data terminal, and a control signal for network control to and from an exchange or a network, and generates a ring tone signal when an incoming call is received; In a digital telephone equipped with a speaker amplifier that amplifies a ringtone signal from a section to drive a speaker, a resistor voltage divider circuit is provided between the ringtone generation circuit, which is a path for the ringtone signal, and the speaker amplifier, and the A ringtone generation circuit for a digital telephone, characterized in that the voltage division ratio of a resistive voltage divider circuit is controlled by a power down signal that controls the power consumption of a codec.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988141399U JPH087713Y2 (en) | 1988-10-28 | 1988-10-28 | Ring tone generation circuit for digital telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988141399U JPH087713Y2 (en) | 1988-10-28 | 1988-10-28 | Ring tone generation circuit for digital telephone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0262859U true JPH0262859U (en) | 1990-05-10 |
JPH087713Y2 JPH087713Y2 (en) | 1996-03-04 |
Family
ID=31406421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988141399U Expired - Lifetime JPH087713Y2 (en) | 1988-10-28 | 1988-10-28 | Ring tone generation circuit for digital telephone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH087713Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000286926A (en) * | 1999-03-31 | 2000-10-13 | Sanyo Electric Co Ltd | Portable telephone system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61189054A (en) * | 1985-02-15 | 1986-08-22 | Mitsubishi Electric Corp | Audible sound generating circuit of digital telephone set |
JPS6361515A (en) * | 1986-09-01 | 1988-03-17 | Fujitsu Ltd | System for varying volume in car telephone equipment |
-
1988
- 1988-10-28 JP JP1988141399U patent/JPH087713Y2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61189054A (en) * | 1985-02-15 | 1986-08-22 | Mitsubishi Electric Corp | Audible sound generating circuit of digital telephone set |
JPS6361515A (en) * | 1986-09-01 | 1988-03-17 | Fujitsu Ltd | System for varying volume in car telephone equipment |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000286926A (en) * | 1999-03-31 | 2000-10-13 | Sanyo Electric Co Ltd | Portable telephone system |
Also Published As
Publication number | Publication date |
---|---|
JPH087713Y2 (en) | 1996-03-04 |
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