专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH01136405A FILTER CIRCUIT 失效
公开(公告)号：JPH01136405A
公开(公告)日：1989-05-29
申请号：JP29491387
申请日：1987-11-21
申请人： MATSUSHITA ELECTRIC IND CO LTD , MIDORI MUSEN KK
发明人： TAZAKI SHIGERU , KAMO YUICHI , ISHIKAWA MASAKI
IPC分类号： H03H7/01 , H03H7/09
摘要： PURPOSE:To form a filter circuit with an inexpensive cost and small volume by adopting the LC of a tuning element as a fixed part and providing a small hole for tuning to a shield case so as to deform the L mechanically thereby varying the inductance. CONSTITUTION:One terminal of tuning coils L1, L2 is connected to ground and the terminal is connected to ground via capacitors C1, C2 to form a parallel resonance circuit. The two resonance circuits are coupled by an inductive inductance M. The filter is set in the vicinity of a desired frequency by impedances L1, C1, and L2, C2 at first. An adjustment window 2 for L(L1, L2) is provided on a shield case 1. The lower face E of a double-side printed circuit board 3 is enclosed with the shield case 1 by soldering, etc. In the adjustment of the filter frequency, an insulation rod made of a plastic, etc., is inserted from the adjustment window 2 to vary the length of the solenoid tuning coil L for the optimum adjustment. The filter is not limited to two-stage but the filter of one stage - n-stage can be formed.

2. 发明专利

JPH1155051A POWER AMPLIFIER CIRCUIT 失效
公开(公告)号：JPH1155051A
公开(公告)日：1999-02-26
申请号：JP21701897
申请日：1997-07-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAMO YUICHI , OKAWA SADAO
IPC分类号： H03F3/68 , H03F3/24
摘要： PROBLEM TO BE SOLVED: To secure a linear amplification function and to reduce power consumption by providing signal path switching circuits to power amplifiers on plural stages, selecting a power amplifier to be used based on desired output power information to be inputted and supplying power source to a power amplifier to be selected. SOLUTION: When an output power setting means inputs output power information 15 to a control circuit 13, the circuit 13 responds to the information 15, selects two among three power amplifiers 1 to 3 to be used and sends a control signal 14 to corresponding power source feeder circuits 4 to 6 so that a power source 16 can be fed to amplifiers 1 to 3 to be used, for instance, in the case of middle power output information. At the same time, it also sends the signal 14 to signal path switching circuits 7 to 10, switches the circuits 7 to 10 so that the amplifiers 1 to 3 to be used may be connected in series and acquires a desired middle power output 12. Output of each amplifier 1 to 3 is detected by an output detection circuit, is fed back to the circuit 13 and controls the output of each power amplifier.

3. 发明专利

JPH0275253A RADIO TELEPHONE SET 失效
公开(公告)号：JPH0275253A
公开(公告)日：1990-03-14
申请号：JP22707788
申请日：1988-09-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAMO YUICHI , TAZAKI SHIGERU
IPC分类号： H04M1/00 , H04B15/00
摘要： PURPOSE:To prevent reception fault by presenting a disturbing component at the outside of a band of an intermediate frequency band filter at the post- stage of the 2nd and 4 mixers even if the disturbing component due to interference of leakage power takes place. CONSTITUTION:The frequency of the 1st local oscillator 9 provided in a master equipment 1 and of the 2nd local oscillator 10 whose oscillated frequency is modulated by the content of transmission, and the frequency of the 3rd local oscillator 18 provided in a slave equipment 2 and of the 4th local oscillator 19 whose oscillated frequency is modulated by the content of transmission with respect to the intermediate frequency of the master equipment 1, and the intermediate frequency of the slave equipment 2 are set with a prescribed frequency deviation respectively. Then all combination of the frequencies are selected at the outside of band of intermediate frequency band pass filters 27, 37. Thus, the reception fault due to leakage power is not caused even if the master equipment 1 and the slave equipment 2 are approached together without provision of a tight shield.

4. 发明专利

JPS6165543A Cordless telephone set 失效
标题翻译：无绳电话机
公开(公告)号：JPS6165543A
公开(公告)日：1986-04-04
申请号：JP18676684
申请日：1984-09-06
申请人： Matsushita Electric Ind Co Ltd
发明人： KAMO YUICHI , YAMAMOTO MASAHIKO
IPC分类号： H04M1/00 , H04B7/26 , H04M1/73
CPC分类号： Y02D70/00 , Y02D70/449
摘要： PURPOSE: To prevent the erasure of storage content of a RAM by adopting the constitution that a voltage drop of owner supply voltage is informed to the user by display or the like when the voltage drops to the specified value or below, a timer is started, a cordless circuit section as a load is disconnected from a battery after a prescribed time is elapsed and the RAM is connected succeedingly to the battery.
CONSTITUTION: A power switch 3 is turned on normally, a power is applied to the cordless circuit section 2 to apply the function as a cordless telephone set, a voltage of the battery 1 is supplied normally to the RAM3 to hold the storage content of the RAM3. When a voltage drop detection circuit 5 detects that the power supply voltage reaches a prescribed value or below because of the use for a long time, a timer circuit 5 is started and alarm of voltage drop is raised to the user by a display circuit 7. Then a control circuit 8 is operated by an output of the timer circuit 6 as a prescribed time is elapsed to disconnect the battery 1 from a handset circuit 2. Then the RAM3 is energized from the battery 1 succeedingly and the storage content is not lost.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了防止RAM的存储内容的擦除，当采用当电压下降到指定值或更低时通过显示等通知用户所有者电源电压的电压降的结构，启动定时器，在经过规定时间之后，作为负载的无绳电路部分与电池断开，并且RAM连续地连接到电池。构成：电源开关3正常接通，对无绳电路部2施加电力，作为无绳电话机的功能，将电池1的电压正常供给到RAM3，以保持电力开关3的存储内容 RAM3。当电压降检测电路5由于长时间使用而检测到电源电压达到规定值以下时，启动定时器电路5，并且通过显示电路7向用户报警电压降。然后，经过定时器电路6的输出，控制电路8经过规定的时间以将电池1与手机电路2断开连接。然后，RAM3从电池1继续通电，存储内容不会丢失。

5. 发明专利

JPS63141421A METHOD FOR SELECTING IDLE CHANNEL 失效
公开(公告)号：JPS63141421A
公开(公告)日：1988-06-13
申请号：JP28791086
申请日：1986-12-03
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KAMO YUICHI , TAZAKI SHIGERU
IPC分类号： H04W84/08 , G03B5/00 , H04B1/40 , H04B7/26 , H04N5/232 , H04W24/00 , H04W72/08
摘要： PURPOSE:To attain the effective use of adjacent room channels by comparing a channel level before and after an excess input is detected and using a channel as an idle channel when the level is a prescribed value or below. CONSTITUTION:A controller 14 gives a channel data to a local oscillator 4 to search channels 1-14 to detect the reception level. Then the controller, if each channel has a 1st level or over, detects whether or not the channel has a 2nd level or below and then detects whether or the channel is the (H+ or -1) with respect to the excess input channel H if the channel has the 2nd level or below, and selects it as an idle channel when the channel is the (H+ or -1) channel. If not the (H+ or -1) channel, whether or not the modulation system is a 3rd intermodulation produce (2A+ or -B) form is detected, and in case of the (A+ or -B form, it is selected as the idle channel. If not, whether or not the (A+B-1) form is detected, and in case of the (A+B-1) form, it is selected as the idle channel (A, B, C are excess input).

6. 发明专利

JPS6295032A SIGNAL SENDING-OUT METHOD FOR CORDLESS TELEPHONE SYSTEM 失效
公开(公告)号：JPS6295032A
公开(公告)日：1987-05-01
申请号：JP23605185
申请日：1985-10-22
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO MASAHIKO , TAZAKI SHIGERU , KAMO YUICHI
IPC分类号： H04B7/26 , H04M1/00
摘要： PURPOSE:To send and receive exactly a control signal at the time of waiting, and to prevent a control signal from disturbing a call at the time of calling, by transmitting it on a larger transmission level than that of the time of calling, at the time of waiting. CONSTITUTION:After decoding a signal by a control part 21, whether it coincides with the code of a base set I or not is collated, and in case of a call of its own telephone set, an automatic answering signal ACK is outputted, and this signal is transmitted by a frequency F2 from a transmitting antenna 22. The answering signal is inputted to a control part 1 through a receiving antenna 3, the collation of a cordless telephone set II is executed in the same way, and after it is completed, when an answer is executed to a call after hook-off by the cordless telephone set II, a hook-off code is sent out, received again by a base set II, and a DC loop is made in a subscriber line H. In this state, a telephone exchange station A connects one of calling subscribers B-D to the subscriber line H and enters into a call. At the time of a call, it may suffice that the output level of a transmitter 4 or 24 is controlled so that switching devices 8 and 28 are lowered by controllers 1 and 21, respectively.

7. 发明专利

JPS61134822A Power source circuit of small-sized electronic apparatus 失效
标题翻译：小尺寸电子设备的电源电路
公开(公告)号：JPS61134822A
公开(公告)日：1986-06-21
申请号：JP25670384
申请日：1984-12-05
申请人： Matsushita Electric Ind Co Ltd
发明人： KAMO YUICHI , YAMAMOTO MASAHIKO
IPC分类号： H04B1/16 , G06F1/00 , G06F1/30 , G06F12/16 , G11C5/14 , H02J1/00 , H02J7/00 , H04B1/40 , H04B7/26 , H04W52/00
摘要： PURPOSE: To increase the reliability and to reduce the cost by raising an alarm by an output of the first detecting circuit, and detaching a load by an output of the second detecting circuit.
CONSTITUTION: Power is supplied to a telephone set circuit 1 and a memory 2 through a diode 6 from a battery 3 functioning as a main power source. In this case, the first detecting circuit 8 for detecting the first voltage Ak, an alarm circuit 9 for generating a buzzer, etc. by an output of said circuit, the second detecting circuit 10 for detecting the second voltage (provided, A>B), and a controlling circuit 11 are provided. In this state, when a voltage of the battery 3 becomes lower than the prescribed voltage A, the alarm circuit 9 is operated, and when the voltage further drops and becomes the prescribed voltage B, the controlling circuit 11 is operated, and the telephone set circuit 1 is detached electrically. In this way, a load current of the battery 3 is supplied to only the memory 2, and its voltage is kept constant, therefore, data of the memory can be prevented from being annihilated.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过第一检测电路的输出提高警报并通过第二检测电路的输出来分离负载来提高可靠性并降低成本。构成：从作为主电源的电池3通过二极管6向电话机电路1和存储器2供电。在这种情况下，用于检测第一电压Ak的第一检测电路8，用于通过所述电路的输出产生蜂鸣器的报警电路9，用于检测第二电压的第二检测电路10（提供A> B ）和控制电路11。在这种状态下，当电池3的电压变得低于规定电压A时，报警电路9动作，当电压进一步下降并成为规定电压B时，控制电路11动作，电话机电路1电气分离。以这种方式，电池3的负载电流仅被提供给存储器2，并且其电压保持恒定，因此可以防止存储器的数据被湮灭。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式