JPS6458152A - Radiotelephony system - Google Patents
Radiotelephony systemInfo
- Publication number
- JPS6458152A JPS6458152A JP21476887A JP21476887A JPS6458152A JP S6458152 A JPS6458152 A JP S6458152A JP 21476887 A JP21476887 A JP 21476887A JP 21476887 A JP21476887 A JP 21476887A JP S6458152 A JPS6458152 A JP S6458152A
- Authority
- JP
- Japan
- Prior art keywords
- cpu
- pulse train
- radio telephone
- holding tone
- telephone set
- 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.)
- Pending
Links
Abstract
PURPOSE:To realize small in size, light in weight and low in power consumption by allowing a CPU of a radio telephone set to generate a pulse train of a frequency corresponding to a holding tone. CONSTITUTION:The CPU 12 applies total control of a radio telephone set and is provided with a melody generating program to generate a pulse train having a frequency corresponding to a holding tone by itself. Moreover, the radio telephone set is provided with a holding switch 13 to change over whether or not a holding tone is rung, a waveform shaping circuit 14 comprising a filter or the like shaping the waveform of the pulse train generated by the CPU 12, and a speaker 15 used conventionally for talking. Thus, a device such as an exclusive melody IC to ring a holding tone is not required. Thus, the current consumption is reduced, small size and light weight are realized and the convenience in handy set is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21476887A JPS6458152A (en) | 1987-08-28 | 1987-08-28 | Radiotelephony system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21476887A JPS6458152A (en) | 1987-08-28 | 1987-08-28 | Radiotelephony system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6458152A true JPS6458152A (en) | 1989-03-06 |
Family
ID=16661215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21476887A Pending JPS6458152A (en) | 1987-08-28 | 1987-08-28 | Radiotelephony system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6458152A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04249951A (en) * | 1991-01-07 | 1992-09-04 | Murata Mach Ltd | Telephone set |
JPH05167656A (en) * | 1991-12-16 | 1993-07-02 | Matsushita Electric Ind Co Ltd | Mobile radio equipment |
-
1987
- 1987-08-28 JP JP21476887A patent/JPS6458152A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04249951A (en) * | 1991-01-07 | 1992-09-04 | Murata Mach Ltd | Telephone set |
JPH05167656A (en) * | 1991-12-16 | 1993-07-02 | Matsushita Electric Ind Co Ltd | Mobile radio equipment |
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