JPH0746178A - Cellular hand portable type speaker phone device - Google Patents

Abstract

PURPOSE:To add a 'telephone response function' and on 'available time display function' based on the residual quantity of a battery, etc., on a hand-carry type cellular telephone set. CONSTITUTION:This device is the hand-carry type cellular telephone set including a voice accumulation function which makes a cellular telephone set 10 function similarly as a telephone response device, a battery monitoring system which provides the real time display of residual time for the use of the cellular telephone set to a user in both standby and speech modes, and an interface adaptor 400 used for a speaker phone function, feed to the cellular telephone set, and the re-charge of the battery.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cellular handheld portable speakerphone device.

[0002]

BACKGROUND OF THE INVENTION Cellular telephones are rapidly becoming commonplace.
In fact, in many areas cellular telephones have become almost a necessity. As the technology of cellular phones advances, the size of cellular phones is constantly shrinking to fit in the palm or shirt pocket. However, conventional cellular telephones have some problems.

For example, a cellular telephone designed for use outside the vehicle environment will not operate in the speakerphone mode. Therefore, the hands of the user are not free during use. In addition, standard telephones and in-vehicle cellular telephones designed to operate in the speakerphone mode have some disadvantages. For example, the acoustic coupling between the speaker and the microphone has some undesirable consequences. Speakerphone end (speakerp
Speech that enters the hone end is returned from the speaker to the microphone through an acoustic path and is delayed and sent to the remote party. This appears in the form of a "speaker echo." Similarly, the remote party receives a "listener echo". Another problem common to speakerphones concerns the gain required in both the transmit and receive paths to compensate for the losses caused by moving the phone away from the user's head. The signal from the microphone reaches the speaker via the sidetone pass and returns to the microphone through the acoustic coupling described above.
This forms a loop. If the gain of this loop is too great, "singing" will occur. As one proposal for solving the "echo" and the "sounding", there is a voice operation switch device that allows only one-way transmission to operate at a time. However, conventional switch devices reduce the natural feeling of conversation.

Another problem with conventional cellular telephones is their lack of recording capability. Therefore, if the user is away from the cellular telephone when the telephone call comes in, the person making the telephone call cannot leave a message.

Yet another problem is the fact that conventional cellular telephones are primarily designed to operate on batteries. In a conventional cellular telephone, when the battery is completely discharged, the discharged battery must be removed and replaced with a charged spare battery. If no spare battery is available, until the current battery is recharged,
Cellular phones are useless.

Further, although many cellular telephones have an indication of the state of charge and / or charge level of the battery, such an indication of the state of the battery provides meaningful information (eg battery Is the state of charge sufficient to allow the user of the phone to make another call or is the state of charge of the battery sufficient to determine the amount of talk time the user of the phone can have? , And, moreover, is the state of charge of the battery sufficient to determine how much time is left to receive a call, etc.) is difficult for the user of the cellular telephone. While using a cellular phone, if the battery level approaches full discharge, the user alerts the other party of this fact, hangs up the phone and replaces the discharged battery with a spare (if a spare battery is available), Then again,
You have to call the other party again. Such a procedure is extremely inconvenient.

An object of the present invention is to provide a handheld cellular telephone device which practically eliminates the problems associated with the prior art.

[0008]

SUMMARY OF THE INVENTION In accordance with one aspect of the present invention, a cellular telephone can include a digital signal processor (DSP). The digital signal processor performs improved voice switching operations that provide acoustic echo suppression when in the speakerphone mode.

In accordance with another aspect of the present invention, a handheld cellular telephone is a cellular telephone with a telephone answering device.
It provides a recording / playback function for speech that operates in the same way as one answering device).

In accordance with yet another aspect of the present invention, a cellular telephone provides a battery time monitor that provides visual feedback of remaining battery power to the telephone user by displaying the time remaining for operation. Can be included. The real-time display can provide the user with the remaining operating time for both the standby mode and the conversation mode of the cellular telephone. By providing a real-time display of the remaining operating time of the cellular telephone (standby and call), the user of the cellular telephone will not only be able to charge the battery of the cellular telephone, but also the next call before the battery is completely discharged.
You can immediately know how long it can last.

According to yet another aspect of the present invention, a handheld portable cellular telephone device can include an interface adapter and a battery pack that provide some advantageous features. First of all, the interface adapter, when equipped with a cellular telephone,
It can provide power for a cellular telephone as well as a speakerphone capable output. Therefore, the cellular telephone can be used even when the battery is completely discharged and the spare battery is unavailable. In addition, the battery can be charged while the cellular telephone is in use in the speakerphone mode.

According to yet another aspect of the present invention, the power supply to the cellular telephone can be switched from the interface adapter to the battery pack without interrupting the power supply to the telephone. for that reason,
Even if the call is ongoing, without interrupting the call,
The cellular telephone can be attached to or detached from the interface adapter.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings. The best known mode of practicing the present invention is described below. This description is not to be understood in any limiting sense and is merely intended to illustrate the general principles of the invention. The scope of the invention is defined by the claims that follow.

FIG. 1 shows a handheld cellular telephone having a keypad 11. The key pad 11 is well known in the art such as numerical keys, "*" and "#" keys, voice storage functions such as message recording and reproduction, and send and end. It contains several miscellaneous keys 14a-14c that are pressed to activate other functions. A liquid crystal display (LCD) 12 is used to display time and date, dialed numbers, battery status, appointments, appointments, appointments and other information. Scroll key-13a-13
b is US patent application Ser. No. 07 / 876,103, filed Apr. 30, 1992 and incorporated herein by reference in its entirety, entitled "PC Coupling for Cellular Telephones (PC -LINK FOR CELLULAR TELEPHON
E) ”. A connector (not shown) is provided for connection with the RS-232 serial interface. The cellular telephone 10 further includes an earpiece 15, a microphone 16, a power on / off switch 17, and a volume control switch 18. This cellular telephone operates in both analog and digital modes. The operation in such a mode is described in further detail below, as well as the circuitry of the cellular telephone 10.

For example, as shown in FIG. 2, a hand-held type
The cellular telephone 10 can be installed in an interface adapter 400 designed for desktop.
The cellular telephone 10 can also be installed in a similar interface adapter designed for in-vehicle use.
The desktop interface adapter 400 is
It includes a speaker 434 and a microphone 428 used in connection with the cellular telephone 10 to perform the speakerphone function. The vehicle-mounted interface is also similarly configured,
Performs a similar function. Desktop and vehicle interface adapters are used to power the cellular telephone 10 and charge the telephone battery. Regarding the interface adapter, let alone the speakerphone, power supply, and charging function,
It is described in detail below.

-Circuit Configuration-According to a preferred embodiment, the circuit of a cellular telephone is, for example, the logic board shown in FIG. 3 (FIGS. 4 and 5 are enlarged views thereof) and the circuit of FIG. (Figs. 21 and 22 are enlarged views thereof)
dio frequency board) and two circuit boards,
Generally, it is divided. The radio frequency circuit board provides the traditional FM transmit and receive functions used in current cellular phones.
The high frequency circuit board also provides a linear transmit / receive function used for pi / 4 differential quadrature phase shift key (QPSK) modulation used in North American Time Division Multiple Access (TDMA) transmission. . The preferred embodiment apparatus essentially consists of A / D and D / A of audio input / output signals.
Performs almost all of the audio and signal processing functions, including conversions respectively, digitally.

A. Logic circuit board For example, as shown in FIG. 3, 4-wire / time division multiplexing (TD)
M) bus 116 is an integrated circuit (ASIC: ap) of the applicable characteristic.
replication specific integrated circuit). The ASIC 112 is a microprocessor 122,
Preferably, 68HC11 micro
It provides an interface to the processor and to a TDM bus 116 that is connected to another part of the logic circuit board.
The ASIC 112 has a data format conversion function (serial format) that enables data transfer between a serial port connected to the TDM bus 116 and a microprocessor 122 having a parallel format.・ Parallel and parallel / serial) are executed. Microprocessor 122 performs all control functions for cellular telephone 10. Such control functions include user interface functions such as driving the LCD controller 124. The LCD controller sends signals to the LCD display through the LCD display connector 140. You
The interface function also includes monitoring the key signals received from various keys through the keyboard connector 130. The control function is also a call process.
ing), voice storage, digital signal processor (DSP) control, and RF control. The memory map and address map for the microprocessor 122 are shown in FIGS. 9 and 10 (FIGS. 11-13 are enlarged views of FIG. 10), respectively, and the ASIC 112 is shown.
Will be described below in Section C.

According to a preferred embodiment, the Micro microsoftener 118, preferably DS5311 from Dallas Semiconductor, is a microprocessor 1
Used as a port expander to provide an additional I / O port for 22. The Micro Softener 118 also includes a resident "bootstrap program" used to load the programs used by the microprocessor 122. In such a load operation, the micro softener 118 uses the serial port 134 to receive information from external devices. Then, the control program executes the read only memory (R
OM) and read-write memory (RAM). The static RAM 126 also contains compressed speech data and telephone numbers, various appointments.
It is also used to store data such as ts). The operating program operates from the ROM, and the data operates from the RAM. ROM and RAM are parts of a single device.

The Micro Softener 118 also has a static RAM 126 when the cellular telephone is turned off.
Also controls a battery backup function that is provided to ensure that the memory does not lose its stored contents. While the cellular phone is operating, the 6V power supply 142 regulated by the regulator 144 provides a static RAM 126.
Supply power to. When the cellular phone is turned off, the static RAM 126 is switched to a 3V battery 146, preferably a lithium battery, used for storage retention.

Real Time Clock (RTC) 12
8 is connected to a micro softener 118. RTC
128 provides time and date information. The time and date information is displayed on the LCD display 12. further,
The time and date information is used with respect to appointment data to alert the user that there were appointments for the day. As such, the cellular telephone 10 can also be used as a "pocket secretary."

The logic circuit board is connected to a battery (described later) by the connector 148 and the power supply on / off switch 17. The power on / off switch 17 is connected to the power switch controller 150. The power switch controller 150 is a keyboard connector 1
Connected to 30. As such, the power switch controller 150 is used to turn on the power on / off switch in response to any one of the keys being pressed by the user. Power switch controller 15
0 is also ASIC112, Micro Softener 11
8, microprocessor 122, and RTC 128 are also connected. Therefore, if the promised content is a telephone call, the power switch controller 150
Is used to turn on the cellular phone at a fixed date and time. At such time, the user is signaled with a "beep" and the predetermined telephone number is automatically dialed. Further, a voltage regulator 152 is connected to the power on / off switch 150.

For example, as shown in FIG. 3, an analog signal passes through a microphone connector 100 and enters a logic circuit board and a voice coder / decoder (voice codec) 102, preferably CPS1027 manufactured by AT & T.
Is converted from analog to digital form. The audio codec 102 is connected to the TDM bus 116. The audio codec 102 includes an A / D and D / A converter and produces a digital representaton of the analog signal from the microphone. Similarly,
The digital signal to be output through the speaker connector 104 is first converted to analog by the audio codec 102. The audio codec 102 is also connected to the external connector 106. This external connector 1
06 is connected to either the vehicle-mounted interface adapter or the desktop interface adapter and the alarm connector 108.

A baseband digital signal processor (baseband DSP) 114, preferably the Texas Instruments TMS320C53, is also connected to the TDM bus 116. Baseband DS
P114 is an advanced mobile phone service (AMPS)
Perform analog functions. These functions include filtering and compression of audio signals from the microphone, deviation control, frequency shift key (FSK) signal processing, and SAT and supervisory tone for link control. ) Signaling,
And FM modulation before the signal is sent to the RF board. Baseband DSP 114 also
Any T such as data reception, equalizer detection, channel forward error correction (FEC) decoding and encoding, and burst generation.
It also performs the DM access function.

Voice Digital Signal Processor (vo
An ice DSP) 110, preferably a Texas Instruments TMS320C53, is connected to the TDM bus 116. The first function of the voice DSP 110 is when the cellular telephone is operating in IS-54 digital mode, the voice codec 102 and the baseband DSP1.
VSELP (Vector Sum Exited Line)
ar Predictive) to provide speech compression.
The second function of the voice DSP 114 includes voice recording and acoustic echo suppression. These functions are described below.

For example, as shown in FIG. 18, a voice DS
P110 operates as a state machine under the control of microprocessor 122. The voice DSP 110 has several states or modes, whether analog or digital.
Works with any of the These modes are described below with respect to the functions performed in connection with each mode.

In accordance with the preferred embodiment, upon power up, the voice DSP 110 initializes all hardware, waits for about 5 milliseconds, and then waits for a "low power" idle mode.
Go to DO 01. For example, as shown in FIG.
One line is set to "H (high)" during the initialization process when the power is turned on. Harm from the microprocessor 122 appearing on the INT1 line of the voice DSP 110.
A hardware interrupt (short "L" pulse) causes the voice DSP to leave the idle mode 01 and proceed to the main command mode. In command mode, the voice DSP 110 is the microprocessor 12
Wait for command from 2. Microprocessor 1
When the command comes from 22, the voice DSP 110
Moving to one of the operating modes, the microprocessor 12
It stays in that mode until the command for changing the mode arrives from 2. If the voice codec 102 is needed in a given operating mode, the microprocessor 122 will activate the voice codec prior to the interrupt. No interrupt is required when switching from one mode to another.
The exit current mode command causes the voice DSP 110 to return to the idle mode 01. Hereinafter, FIG. 18 will be further referred to.

B. TDM Bus As discussed with respect to FIG. 3, microprocessor 12
2 is connected to the TDM bus 116 via the ASIC 112. The TDM bus 116 operates as an 8-slot system, for example, with the address allocation shown in FIG. 6 and the slot allocation shown in FIG. TDM
Microprocessor 122 is fixed in slot 0 to generate the synchronization signal for bus 116. The audio codec 102 is fixed to the slot 2. According to the preferred embodiment, audio DSP 110 and baseband D
The SP 114 performs transmission with a multi-slot / frame.

As shown in FIG.
The system contains 8 slots. 8 in each slot
Address bits and 16 data bits are carried (transmitted) in synchronization with the clock signal. A packet from one device consisting of command and data information will not be blocked by another packet from another device.

C. ASIC 112 An example of the ASIC 112 (FIG. 3) according to the present invention is shown in FIG.
Is shown in. 15 and 16 are enlarged views of FIG. As noted above, microprocessor 1
A memory map and address map for 22 (FIG. 3) is shown, for example, in FIG. FIG. 10 shows the AS
3 shows an address map for the IC 112.

The ASIC 112 is a pair of bidirectional buffers 112 used to transfer data between external devices.
a and 112b are included. The MPU decoder circuit 112c is
Used to provide the chip select signal to the microprocessor 122. The chip select signal is in the address range of the microprocessor 122 (from 0340H to
035FH) is defined. MPU decoder circuit 112c
Is also used to provide the clock signal that drives the LCD controller 124.

As described below with respect to the Micro Softener 118, the operating program is a static RAM.
It is loaded into 126 and stored. Protect circuit 1
12d is used to prevent unauthorized memory loads. Static RAM 1 for operating program
Prior to loading into 26, protect circuit 112d
Determines whether a valid 8-bit passcode is loaded. If a valid 8-bit Pasco-
If loaded, the data is written to the memory map address range 02000H to 0FFFFH.
If there is no valid 8-bit passcode, the memory map address range 02000H to 0FFFFH
No data is written to

According to the preferred embodiment, a static RA
The storage capacity of M126 is 128 Kbytes. However, the microprocessor 122 can only access the 64-byte address range. For this reason, the protect circuit 112d includes a microprocessor
It also includes a bank change circuit that allows access to the entire 8K byte. Microprocessor 12
2 writes data to address 0344H to enable the bank change function. Microprocessor 1
22 addresses the range 2000H to 3FFFH, the microprocessor 122 determines that the address 0344
According to the contents of the H register, the range shown in FIG. 9 is actually addressed.

14.4 MHz (XIN1) and 7.77
Two clock signals having respective frequencies of 6 MHz (XIN2) are received by the frequency dividing circuit 112e. The frequency divider circuit 112e is then connected to the one shown in FIG.
It provides a 1.8 MHz clock signal for the high frequency circuit board shown in K1) and for the TDM bus 116 (TDMCLK2). The divider circuit 112e also includes a 3.6 MHz clock signal for the internal circuit ASIC 112 and 7.2 for the microprocessor 122.
It also provides a MHz clock signal.

The ASIC 112 includes a TDM transmitter circuit 112f that includes several registers that operate as follows. The Transmit Channel Select (TSCR) Register (0350H) identifies which timeslot is available to the microprocessor 122. For example, if such a slot contains slot 0 and slot 4, as shown in FIG. 7, the contents of this register would be 11H. The TDM Transmit Address (TTA) Register (0351H) uses the address shown in FIG. 7 to determine which of the voice codec 102, voice DSP 110, or baseband DSP 114 should be transmitted. First, TDM transmission data (TRT1)
Register (0352H) is used to store the upper 8 bits of data to be transmitted over TDM bus 116. The TDM Transmit Data (TRT2) Register (0353H) is then used to store the lower 8 bits of data to be transmitted over TDM Bus 116.

Microprocessor 122 (FIG. 3) has T
After specifying the contents of the SCR, TTA, TRT1 and TRT2 registers, the ASIC 112
1 and the data stored in the TRT2 register,
Use the time slot specified in the TSCR register to the device specified in the TTA register,
Transmit via TDM bus 116 (FIGS. 3, 6 and 7).
When the ASIC 112 completes the transmission, the ASIC 112
Is the EOFT of the interrupt register (035CH)
An interrupt signal for setting the X flag to "1" is supplied to the microprocessor 122. Then, the microprocessor 122 reads the contents of the interrupt / transmission empty clear register (0354H). Then,
The interrupt signal is disabled and the EOFTX flag is set to "0". Finally, the microprocessor 122
Can read the contents of the Transmit Channel Number Monitor Register (0355H) to determine the current timeslot number.

The ASIC 112 also includes a TDM receiver circuit 112g. The TDM receiving circuit 112g is
It includes first and second TDM data registers (0358H and 0359H). Audio codec 102,
When one of the voice DSP 110 and the baseband DSP 114 (FIG. 3) transmits data together with the signal address signal (40H), the ASIC 112 causes the first and second TDM data registers (0358H and 03).
59H) and store the data. ASIC112
Next, the microprocessor 122 is supplied with an interrupt signal for setting the TR1 FULL flag of the interrupt register (035CH) to "1". The microprocessor 122 then has the first and second TDM data registers (0358H and 0359H).
Read the data stored in. After that, the interrupt signal is disabled and the TR1 and FULL flag is "0".
Becomes

The TDM receiver circuit 112g also includes first and second TDM command registers (035AH and 0).
35BH) is also included. Audio codec 102, audio DS
When either the P110 or the baseband DSP 114 (FIG. 3) sends data with the address signal (80H), the ASIC 112 sends the data to the first and second TDM command registers (035AH and 035BH). Store data. The ASIC 112 then TR1 FULL of the interrupt register (035CH).
An interrupt signal for setting the flag to "1" is supplied to the microprocessor 122. The microprocessor 122 then sends the first and second TDM command
Read the data stored in the registers (035AH and 035BH). The command so that the microprocessor 122 can determine the origin of the command.
The set is referred to as the "global" command set. After that, the interrupt signal is disabled and TR1 ・ FUL
The L flag becomes "0".

The ASIC 112 is also an energy management unit (EMU) interface circuit 1.
Also includes 12h. Figure 2 shows the energy management function.
7, is described below.

The DSP decoder circuit 112i is used to address decode the baseband DSP 114. FIG. 17 shows the I / O of the baseband DSP 114.
Show map. The expanded I / O port for the baseband DSP 114 is provided by the DSP I / O circuit 112L which is a latch type write-only output port.

Microprocessor 122 receives six different interrupt signals. These signals are supplied by the interrupt circuit 112j including the interrupt register (035CH) and the interrupt mask register (035DH). The interrupt register (035CH) stores the following interrupt signals (1) to (6). (1) Baseband DSP114
Corresponding to the MAHO interrupt signal connected to bit 0 of port E of the DSP I / O map;
(2) RTC compatible with real-time clock 128
Interrupt signal; (3) SOFTTN interrupt signal corresponding to Micro Softener 118; (4) TXEMP
An interrupt signal; (5) the above-mentioned TR1 · FULL interrupt signal; and (6) the above-mentioned EOFTX interrupt signal. Interrupt mask register (035
DH) can selectively enable and disable each of these interrupt signals.

The ASIC 112 also includes a watch dog timer circuit 112k which shuts off the power supply to the entire system if the operating program of the base band DSP 114 (FIG. 3) loops.
When the baseband DSP 114 is operating properly, the watch dog timer circuit 112k prevents the DSP I / O map from poking to prevent the power supply from being cut off.
Tot D is constantly accessed.

The base band DSP 114 is a DSP.I.
The ASIC 112 can be directly accessed through the I / O circuit 112l. Microprocessor 122
Is the ASIC12 through the MPU / I / O circuit 112m.
2 can be accessed directly.

Baseband DSP 114 operates in "burst" mode during low duty cycles.
The power save circuit 112n is a baseband DSP1.
It controls the supply of the clock signal to 14 and activates or deactivates its own clock. The resulting power savings prolongs the waiting time of the overall system.

Multiplexer 112o is used to switch various internal data bus paths to a single external bus.

D. High Frequency Circuit Board (RF Board) The high frequency circuit board according to the preferred embodiment is a logic circuit board (logic board) with connectors 136 and 138 shown in FIG.
ard), which is illustrated, for example, in FIG. 21 and 22 are enlarged views of FIG. The upper part of the high-frequency circuit diagram is the transmission path, and the lower part of the figure is the reception path. The high frequency circuit board has full duplex transmit and receive capability because it is required in analog mode. Although full duplex is not needed for digital mode, the North American dual mode system has an analog control channel. Therefore, the cellular phone
An analog control channel is required even if operating in mode.

Activation / disabling of transmission on the transmission path
Signal power amplifier on (PAON) and transmission
ON (TXON) is the baseband codec 120
To differential quadrature phase shift key (DQ
PSK) modulator 200. T which is the transmission signal
XI +, TXI- (in phase) and TXQ +, TX
Q- (in the quadrature phase) is also sent from the baseband codec 120 to the DQPSK modulator 200. DQPSK modulator 200 also receives an input from a phase locked loop (PLL).
PLL is a voltage control oscillator (V
CO) 202, loop filter 204 and a PLL chip 206 that couples to provide a reference frequency. The reference frequency is used to convert the transmitted signal to a transmitted frequency of 800 MHz. PLL chip 206 (and
The PLL chips 252, 274) described below are connected to the microprocessor 1 through the serial interface.
The frequency is programmed by 22. The serial interface has a common data line (DATA), a common clock line (CLK), and a separate strobe line.
It consists of a line (STRB). The data lines carry individual RF channel data bits. The clock line shifts the data to a serial / parallel shift register contained in the PLL chip. As is known in the art, shift registers are programmable down counters. The strobe line causes the serial data to be "latched" in the shift register.

The DQPSK modulator 200 is controlled by the baseband codec 120. DQPSK modulator 200 essentially has three inputs, a phase input, a quadratcher phase input, and a loop oscillator input provided by a PLL. DQPSK200 is
It includes a mixer that mixes the input to 800 MHz and adds the phase channel and the quadrature phase channel. The output from DQPSK 200 is forwarded to bandpass filter 210 which removes the second and third harmonics. Thereafter, the signal is converted by a single pole, double throw (SPDT) type RF switch 212 to either a digital power amplifier 222 or an analog power amplifier 216 (depending on the current operating mode). divert). The path to analog power amplifier 216 includes preamplifier 214. Analog power amplifier 216
Operates in class C mode. The path to the digital power amplifier 222 includes a variable attenuator 218 and a preamplifier 214. Digital power amplifier 222
Is a linear power amplifier and operates in class AB mode.

The signal then passes through the SPDT / RF switch 224 and the antenna is not connected,
In the event of a short circuit or the like, power is routed to an isolator 226 which acts as a protection device to prevent it from reflecting back to the power amplifier. The signal then passes through a coupler 228 which provides a feedback path through detector 230. The detector 230 detects the magnitude of the power being transmitted and sends the signal to the baseband codec 120, which is A / D converted and sent to the baseband codec 114. The converted signal is used in a loop to ensure that the system is transmitting at the proper power. The signal is sent from coupler 228 to a duplexer 232 that acts as a filter to separate the transmit band from the receive band. The duplexer 232 is connected by a switch 234 to either the internal antenna 236 or the external antenna 238 (vehicle antenna). The switch 234 is controlled by the EXTRF signal (see FIG. 3).

In the receive path, when an 800 MHz signal is received at one of the antennas, the signal passes through antenna switch 234, duplexer 232 and the first
Of the matching network 240. The first matching network 240, like the others described below, functions as a filter that matches the output impedance of the duplexer 232 with the devices that follow it. The signal is then fed to a low noise amplifier 242, preferably Triquint Semiconductor.
ctor) TQ9201. The signal from the low noise amplifier 242 passes through several filters: a second matching network 244, an RX bandpass filter 246, and a third matching network 248.

The 800 MHz signal is then fed to mixer 2
Proceeding to 50, where it is converted to a low frequency signal. The mixer 250 has two inputs and one output. The first input is the received 800 MHz signal. The second input is the PLL chip 252, the loop filter 2
54, and another PLL including the VCO 256. The PLL chip 252 is placed in "low power" operating mode by the RXSAVE1 signal. A bandpass filter 258 and a fourth matching network 260 are provided for harmonic elimination and impedance matching, respectively. In essence, the second input is 800 MH
An adjustable synthesizer that produces a signal having an intermediate frequency (IF) of 94.3 MHz when mixed with the z input. That is, it is the frequency shifting or heterodyne function of the receiver. First mixer 25
The output of 0 is then output to the fifth matching network 264,
It passes through a surface acoustic wave (SAW) IF filter 266 and a sixth matching network 268. SAW filter 2
Since 66 is a high impedance device, matching is required. SAW filter 266 provides very sharp rejection from band signals and noise.

The signal is then sent to the receiver chip 27.
0, preferably W2005 made by AT & T. The receiver chip 270 includes a mixer 272 for converting the intermediate frequency (IF) of the signal to 450 KHz. The mixer 272 has two inputs and one output. One input is 94.3 MH from matching network 268.
Receive the z signal. The other input is the PLL chip 274,
PLL including VCO 276 and loop filter 278
Connected to. The PLL chip 274 is RXSAVE2.
The signal causes a "low power" operating mode. Mixer 2
The signal output from 72 is 450 KHz. The signal then passes through digital filters 280, 282 that move out of the band signal. The signal is then provided to either the analog or digital path.

The analog path includes IF amplifier 284, filter 286, limiter amplifier 288, and FM demodulator 290. The digital path includes an IF amplifier 292 and a DQPSK demodulator 294. DQPSK demodulator 29
4 provides signals to the baseband codec 120 in phase (RXI + and RXI-) and quadrature phase (RXQ + and RXQ-).

The high frequency circuit board also includes a voltage controlled transmission crystal oscillator (VCTCXO) 296. The VCTCXO296 is a reference oscillator used to generate all RF frequencies. Automatic Frequency Control (AFC) is a D in baseband codec 120
Controlled by the baseband DSP 114 through the / A converter. The VCTXO 296 also has buffer 2
Through 98, the basic clock frequency used on the main circuit board to run the microprocessor system is provided. Such an arrangement is
Minimize the number of crystals in the system, thus improving reliability and minimizing noise.

-Analog Call- Referring to FIG. 3, according to the preferred embodiment, when the cellular telephone is operating in analog call mode, the voice codec 102 has a sampling rate of 8 KHz,
Converts analog signal from microphone into digital signal.
The baseband DSP 114 receives the data from the voice codec 102 through the TDM bus 116 and processes the data. The baseband DSP 114 then outputs the FM demodulated signal to the baseband codec 1
Send to 20. The D / A converter in the baseband codec 120 converts the signal from digital to analog and then sends the signal to the high frequency circuit board. The radio frequency circuit board then converts the signal to a transmit frequency, for example 800 MHz, to be delivered to the channel in the manner described below. Similarly, the received signal is FM-demodulated by the high frequency circuit board and sent to the baseband codec 120. The baseband codec 120 performs A / D conversion on the signal and outputs it to the baseband DS.
It is sent to P114. The baseband DSP 114 is
Reverse audio function, compression processing (companding),
Filtering processing and control tone detection processing (su
pervisory tone detection). The signal is then sent to the audio codec 102, where it is D / A converted, and then the speaker connector 104 or the external connector 106.
Will be sent to either.

When the cellular telephone 10 is operating in analog mode, the only command that the voice DSP 110 sends to the baseband DSP 114 is an 8-bit attenuation command (eg, shown in FIG. 23). Yes, such a command is an echo suppression function (below,
Sent only while working (as described). When the cellular telephone 10 is operating in analog mode, any commands or data will be sent to the baseband DSP.
It is not sent from 114 to the voice DSP 110.

-Digital Call-The operation of the digital mode is similar to that of the analog mode except that there is no FM analog signal present. That is, the signals transmitted to and received from the base station are digital signals. When operating in digital mode, the audio signal from the microphone is digitized by the audio codec 102. Voice DS
P110 converts the digitized audio signal to VSE
LP encode and compress. For example, as shown in FIG. 24, a voice DSP 110 may use a portion of the audio signal for 17 words per 20 ms full rate frame (or 40 ms half rate frame). Baseband DSP114 in the form of data block
Transfer to. Such block transfers are on the TDM bus 1
16 and is synchronized in hardware by the hardware SYNC signal from the baseband DSP 114. Similarly, the base band DSP114
Is a full-rate frame (or 40 ms each)
During a millisecond half-rate frame, a block of 17 words of data is transferred to the voice DSP 110.

Immediately after the hardware SYNC signal changes from "H" to "L", the baseband DSP 114
Initiates a block transfer. Baseband DSP114
17-word data transferred from the voice processor to the voice DSP 110
A subblock contains packed raw channel data and control information (82 microseconds per word). The channel data includes Class 1 and Class 2 bits defined in IS-54 and is packaged in the manner shown in Table 1.

[0058]

[Table 1]

The control information is contained in the 12-bit form defined in the final word of the 17-word block. Baseband DSP 114 to voice DSP
12 controls in the last word transferred to 110
The le bits are shown in FIG. 25 and are defined as follows, for example.

X11 loopback mode (1 = enable). When enabled, the voice DSP 110 will have a cyclic redundancy check (cyclic redunda).
Convolutional without playing ncy check)
) Echo the received data bits after encoding and decoding. This function is an IS-5 that checks the integrity of the error correction and the error decode code applied to the speech data.
Used in connection with the 4 / IS-55 test interface mode.

X10 Mute (1 = enable). When enabled, the voice DSP 110 may allow muted audio (eg, comfort noise “confor”).
The restored data is returned to the baseband DSP 114 at the next frame using a restored VSELP code representing "t noise").

X9 DTMF (1 = enable). When enabled, the voice DSP 110 will have the table addressed by the look-up address by data bits X0-X5.
Generates a DTMF tone (20 ms) as defined by Bull. This tone is used only for incoming audio.

X8 side tone (1 = enabled). When enabled, the voice DSP 110 echoes a portion of the microphone audio signal into a speaker audio signal.

X7-6 Gain adjustment. When enabled, the voice DSP 110 will
By adjusting the data, the audio output level is increased by a specific amount. That is, X7 = 0 and X6 =
At 0 dB gain. When X7 = 0 and X6 = 1, 3 dB
gain. 6 dB gain when X7 = 1 and X6 = 0. X7
= 1 and X6 = 1, 9dB gain.

X5-0 data field. Define the restored DTMF tone.

After receiving the 17th word from the baseband DSP 114, the voice DSP 110 outputs VSEL.
17-word block containing P-encoded data and control information (125 microseconds per word)
Bring back. Voice DSP 110 to baseband DSP 11
The 12 control bits in the final word transferred to 4 are defined, for example, as follows. That is, X11 reserved.

X10 Speech activity (1 = active). This bit indicates the presence or absence of speech activity based on frame energy.

X9 reserved.

X8 Cyclic redundancy check (CRC). Results (1 = bad). This bit is
The CRC calculation result of the frame before the decoded data is shown.

X7-0 bit error. This field contains the total number of bit errors detected in the final data frame. The bit error is calculated based on the metric of the final 178 class 1-bit convolutional decoding. The maximum value for this field is 89, or 50 percent error rate.

The voice DSP 110 is a hardware SYN.
It monitors the C signal and, in synchronization with the hardware SYNC signal, performs some or all of the following functions at 20 millisecond intervals. That is, these functions are
Class 1 (like Viterbi decoding)
Bit convolutional decoding, CRC decoding / error detection, class 1 / class 2 decoding bit formatting, class 1 bit bit error rate (BER) calculation, bad frame masking algorithm ( IS-54), VSELP decoding and encoding, CRC encoding, formatting of class 1 and class 2 encoding bits, convolutiona
l) Encoding, loopback mode control, speech activity detection, DTMF generation / overlay
), And voice storage and speakerphone functions.

The North American TDMA system is currently
It has 3 time slots every 20 ms. Therefore, three users are on the same RF channel, and the base station may select a particular time slot during the start of call processing.
Allocate in F channel. Voice DSP 110 to 17
Upon receiving the word data block, the base band D
The SP 114 adds protection coding through the RF channel. The baseband DSP 114 then sends the data through the baseband codec 120 to the particular time slot in the form of a 6.7 millisecond burst. The baseband codec 120 uses the data
Data is D / A converted, waveform shaping is performed, and Pi / 4 / QPS
Produces a K signal. The QPSK signal is then passed to the high frequency circuit board modulator 200 where it is converted to 800 MHz and finally to the RF channel.

Data is similarly received. The signal is received by receiver chip 270. The FM signal is FM-demodulated by the FM demodulator 290, and TDMA is performed.
The signal is linearly demodulated by the DSPQK demodulator 294. The TDMA signal is then made available to baseband codec 120 by phase channel RXI and quadrature channel RXQ. Baseband codec 120 A / D converts the signals and samples the samples at a rate of 48.6 KHz to a baseband DS.
Send to P114. The baseband DSP 114 detects the signal and uses an equalizer detector to determine when to convert the signal to a "1" and a "0" to recover the clock for digital signal recovery. I do. The baseband DSP 114 then
Receives the signal, separates the forward error correction information from the speech data, and outputs that data for 17 words.
It is passed to the voice DSP 110 in the form of a data block. Forward, as known in the art,
Error correction corrects any errors that are present in the transmission. The voice DSP 110 also performs a CRC on each word to determine if the word is so dirty that the audio is muted for a particular speech segment. Voice DSP
110 then performs VSELP decoding on the data. VSELP decoding converts that data into an 8 KHz signal to be transferred to audio codec 102. The audio codec 102 D / A converts the signal and sends the analog signal to the speaker connector 104 or the external connector 106.

-Echo Suppression- FIG. 26 shows how the voice DSP 110 executes the echo suppression control algorithm. The control algorithm is
Essentially the same is true for analog and digital modes. Echoes are suppressed by introducing losses in one of the transmit and receive paths when the energy in the other path is greater than the energy in one path and higher than the selected threshold. The loss is about 0 to 40 dB. In other words, one of the aisles is "switched off" while the other aisle is "switched on".

The audio signal from the microphone is A / D converted by the audio codec 102 and processed by the audio DSP 110 at a rate of 8 KHz. The signal is continuously sampled and a 20 ms speech
Stored as a segment. Similarly, the received signal is transferred from the baseband DSP 114 to the voice DSP 110 at a rate of 8 KHz. The signal is continuously sampled and stored as a 20 millisecond speech segment for the receive path. The energy (or power) for each 20 ms segment is raised to the square of each of the 160 signal sample values that occur during 20 ms, and each 20 ms segment for each of the paths. Calculated by accumulating the sum of
Each segment is the average energy of each passage
Is averaged over a longer time interval to determine The "switch" time is the average segment energy taken from a given "switch" threshold, eg,
It is determined by comparing with 15/100 in the automobile environment and 10/100 in the office environment.
"Hold" or override time refers to the average segment energy at a given "hold" threshold, for example 60 / in a car.
100, 40/100 in the office.

During the digital call, the voice DSP 110
Is the digital call mode 00 which is the primary operation mode.
(See FIG. 18). Microprocessor 12
2 must enable the voice codec 102 before entering this mode. Echo suppression is performed directly on the codec data.

During the analog call, the voice DSP 110
Normally stays in idle mode 01 and the baseband DSP 114 has direct access to the codec functions. However, for example, when the handheld portable cellular telephone 10 is inserted into the interface adapter 10, the voice DSP 110 performs the echo suppression function used during speakerphone operation. for that reason,
The voice DSP 110 includes an analog call mode 10.
During the speakerphone operation, the voice DSP 110 monitors the baseband DSP 114, sends and receives data to and from the voice codec 102, and sends attenuation commands to the baseband DSP 114 at periodic intervals. As a result, the audio DSP 110 is based on the baseband DSP 114.
It only "passively" listens to the data exchanged between the voice codec 102 and the voice codec 102 and gives the path gain. The microprocessor 122 is an analog telephone
The voice codec 102 must be enabled before the command 10 is sent to the voice DSP 110.

-Voice Storage Functions-According to the preferred embodiment, several voice storage functions are provided to make the cellular telephone 10 function like a telephone answering machine. These functions are activated by pressing one of the miscellaneous keys 14a-14c of cellular telephone 10 or in response to an incoming call, as is well known in the art.

These two functions are an audio recording and audio reproducing function. The audio recording function is
Allows the user to leave a preset message for what they are calling, such as "I am away from the phone. Please leave a message." . The audio playback function allows reviewing both recorded messages, ie preset messages and messages left by someone calling in the manner described below. And These features can only be activated when the handheld cellular telephone is idle, i.e. the call is not active.

Regarding the audio recording function,
The processor 122 activates the audio codec 102 and then sends an audio recording mode command to the audio D
Send to SP110. In response to the voice recording mode command, the voice DSP 110 outputs the audio recording mode 0.
2 (see FIG. 18). Audio recording mode 0
2, the audio DSP 110 is the audio codec 1
Read the sample value from the 02 A / D converter.
These sample values are VSELP encoded and 1
One word block is sent to the microprocessor 122 at a rate of 20 milliseconds. The microprocessor 122 stores this 11-word block in the static RAM 126. When echo suppression is activated, no audio sidetone is produced. That is, the audio DSP 110 does not transmit the recorded audio portion to the D / A converter of the audio codec 102 and the external connector 106.

Regarding the audio reproduction function,
The processor 122 activates the voice codec 102 and then sends an audio playback mode command to the voice DSP 110. In response to this audio playback / command, the DSP 110 proceeds to audio playback / mode 03 (FIG. 18). In the audio reproduction mode 03, the voice DSP 110 is the microprocessor 1
22 (this processor fetches blocks from static RAM 126), receives 11 word blocks, VSELP decodes such 11 word blocks, and outputs the output sample values to D of speech codec 122.
/ Tell the A converter. The analog signal is transferred to the speaker. During the audio playback mode, any data is transferred from the voice DSP to the microprocessor 12
I can't send it to 2.

Two more voice storage functions provided according to the preferred embodiment are a digital call replay function and a digital call recording function. The digital call replay feature allows recorded messages to be sent to a caller during a digital call. Similarly, the digital call recording feature allows callers to leave messages during a digital call. These functions are activated by microprocessor 122 when cellular telephone 10 receives the call and is not answered by the user. The digital call recording feature is also activated by the user during an active call.

Regarding the digital call reproduction function,
Processor 122 activates voice codec 102 and then sends a digital call play mode command to voice DSP 110. This digital call playback mode
In response to the command, the voice DSP 110 proceeds to the digital call reproduction mode 05 (FIG. 18). Microprocessor 122 then sends the 11 word VSELP encoded blocks from static RAM 126 to audio DSP 110 at a 20 millisecond rate. De-
Data is then sent to the channel. When recording is not occurring, any data will be sent to the microprocessor 1
Not sent to 22. Furthermore, echo suppression is not required, since only one path, the voice to the channel, is active.

Regarding the digital call recording function,
The processor 122 activates the voice codec 102 and then sends a digital call record command to the voice DSP1.
Send to 10. In response to the digital call record mode command, the voice DSP 110 causes the digital call record mode.
Go to step 04 (FIG. 18). In this mode, the audio DSP 110 transfers the 11 word VSELP encoded blocks to the microprocessor 122.
Send at 0 ms rate. Microprocessor 122
Uses this 11-word block as static RAM1
Store at 26. When the digital call recording function is being performed in response to an unanswered call, no data is sent to the channel and echo suppression is not required. However, if the digital call recording function is performed during an active call, echo suppression is performed on the codec data.

Two additional voice storage functions provided in accordance with the preferred embodiment are analog call playback and analog call recording. The analog call replay feature allows recorded messages to be sent during an analog call. Similarly, the analog call recording feature allows the caller to leave a message during an analog call. These functions are provided by the cellular telephone 10
Is activated by the microprocessor 122 when the call is received and not answered by the user. The analog call recording feature is also activated by the user during an active call.

Regarding the analog call reproduction function,
The processor 122 firstly determines that the audio codec 10
2 is disabled and then an analog call play command is sent to the voice DSP 110. In response to the analog call reproduction command mode, the voice DSP 110 proceeds to the analog call reproduction mode 07 (FIG. 18). In this mode, data from static RAM 126 is sent by microprocessor 122 at a rate of 20 milliseconds in the form of 11 word VSELP encoded blocks to audio DSP 110. The data is
It is then VSELP decoded and sent as a digital stream to the baseband DSP 114. When no recording is taking place, no data is sent to the microprocessor 122. In addition, echo suppression is not needed because only voice to one path, ie the channel, is active.

Regarding the analog call recording function,
The processor 122 first activates the voice codec 102 and then sends an analog call record command to the voice DS.
Send to P110. This analog call record command mode
In response to the voice call, the voice DSP 110 proceeds to the analog call recording mode 06 (FIG. 18). In this mode, the voice DSP 110 monitors the data sent from the baseband DSP 114 to the D / A converter of the voice codec 102, VSELP-encodes the data, and outputs the 11 words. The VSELP encoded block is processed by the microprocessor 122 at a rate of 20 milliseconds.
Send to. The encoded block is then stored in static RAM 126. When the analog call recording function is being performed in response to an unanswered call, no data is sent on the channel and echo suppression is not required. However, during an active call, the voice DSP 110 is also sent from the baseband codec 120 to the baseband DSP 114 when the analog call recording function is running and echo suppression is activated. Monitor the data and send the appropriate attenuation command to the baseband DSP.

-Battery Pack and Battery Time Monitoring-As shown in FIG. 27, for example, the battery pack 300.
Is mounted in the handheld cellular telephone 10. The electrical connection between them is facilitated by pins in a manner generally known in the art. The battery pack 300 includes a battery 302, preferably a NiMH battery, and a FET switch 304. Battery 302
When the FET switch 304 is turned on, BA
Power the cellular telephone 10 through the T + line. The battery 302 is also connected to the BAT- line. The battery pack 300 additionally includes a voltage regulator 306 and a battery management circuit 308 that monitors the condition of the battery 302, preferably Benchmarq Electronic.
s) company bq2010 energy management unit. The monitoring function of the battery management circuit 308 includes recharge monitoring and capacity monitoring.

The battery management circuit 308 is connected to the connector 132 of the logic circuit board of FIG. 3 by the line DQ. As discussed above, the connector 132 is connected to the ASIC 112 and is itself connected to the microprocessor 122. As such, the microprocessor 122 can query the battery management circuit 308 at any time to determine the remaining charge of the battery 302. The information received from the battery management circuit 308 is stored in registers within the microprocessor 122. The remaining charge of the battery 302 is
The prestored power consumption estimate is then used to convert the remaining wait time (ie, the time available to receive a telephone call) and the remaining talk time, both digital and analog. The display 12 (FIG. 1) is used to display the current charge status of the battery 302, the amount of remaining standby time, and the amount of usage time of the cellular telephone 10 in a call mode. Various key-14a
One of ~ 14c is used to initiate a battery level indication.

According to a preferred embodiment, the amount of time remaining is
It is predicted according to the amount of power consumption (or current consumption at a fixed voltage). Power consumption is measured in various operating modes, and static RAM is provided so that the microprocessor 122 can perform these calculations.
Stored in 126.

Instead, a handheld cellular telephone 1
The actual current flowing out of the zero battery 302 may be measured. The value of the current actually flowing out, which is an analog value, is converted by the A / D converter and then stored in the static RAM 126. Thus, for each operating mode of the cellular telephone 10, the history of the current drain is revealed, which the microprocessor 122 uses to "stand by" the standby mode, analog and digital call modes. Dynamic prediction of the remaining battery time in.

28 and 29 show examples of routines utilized by microprocessor 122 to monitor the status of battery 302 and display status information. The illustrated routine adapts to the user's usage aspects and predicts the amount of time remaining for operation of the cellular telephone in both standby and call modes.

FIG. 28 shows the microprocessor 122 for updating the average usage parameters of the cellular telephone 10 and for predicting the amount of current that will be needed during standby and call modes. Shows an interrupt routine used by. Microprocessor 122 is programmed to execute the interrupt routine regularly, eg, every 100 milliseconds. In step 1, microprocessor 122 determines the operational status of cellular telephone 10.

After the operating mode of the cellular telephone 10 is determined, the microprocessor 122 determines, in step 2, the current value flowing out over a predetermined period.
Based on the current operating mode of cellular telephone 10 (i.e., analog call, digital call, or standby), microprocessor 122 uses the drain current table to determine the amount of current drained. The drain current value table is, for example, the static RAM 1
Stored at 26. These numbers span an interval equal to the interrupt time interval of the microprocessor 122,
It is determined based on the actual measurement data for each possible operating mode. For example, if the interrupt time is 100 milliseconds, the number on the table will be measured for each possible operating mode of the cellular telephone 10 over an interval of 100 milliseconds.

The drain current information determined by the microprocessor 122 is the static R (not shown).
Stored in AM126. Microprocessor 12
2 stores drain current information for each operation mode of the cellular telephone. This information is accumulated for a period equal to the X interrupt time interval, as shown in step 3 of FIG. X is determined based on the interrupt time interval and the resolution of the display used. Thus, if the battery usage information is in minutes and the interrupt time interval is 100 milliseconds, the microprocessor 122 will provide 600 interrupt time intervals to provide a one minute resolution of the battery usage information that can be displayed. Battery usage information is accumulated throughout. The interrupt time interval is expanded or contracted.

In step 4, the microprocessor 1
22 determines the average drain current in both the call mode and the standby mode. Running average (running
average) is calculated for each mode by dividing the total accumulated drain current value by, for example, a 60 second time base. The result is the average power consumption (or drain current) for each one minute interval (mA / min). The result is stored in static RAM 126 for use by the display routine described below with reference to FIG.

Until the interrupt time X is reached, the routine returns in step 5 to step 3.

A worst-case predetermined power consumption prediction is stored in static RAM 126. Therefore, when the user of the cellular phone 10 first starts the cellular phone and requests the display of the battery information,
A relatively bad scenario regarding remaining battery capacity is provided. Thereafter, when the usage history is obtained through the above-mentioned routine, the numerical value displayed to the user is updated accordingly.

FIG. 29 shows the routine used by the microprocessor 122 to obtain the data provided by the update routine (FIG. 28) and convert that information into a display format familiar to the user. The routine is executed when the cellular telephone 10 is turned on, or when the user selects an appropriate key, for example, various miscellaneous keys 14a-1.
It is activated by pressing one of 4c.

For example, the display routine shown in FIG. 29, as noted above, turns on the cellular telephone,
Alternatively, it is selected in step 6 by the use of a suitable key. In step 7, the microprocessor 122 addresses the battery management circuit 308. As noted above, the battery management circuit 308 provides an accurate calculation of available battery charge capacity, which is converted to an "energy-remaining" value or total available charge. In step 8, the microprocessor 12
2 relates to the usage routine shown in FIG. 28, and as described above, static RAM 126.
Retrieve the average call drain and average standby drain parameters stored in.

Next, in step 9, the available battery charge value (eg, mA / min) is used (usage).
), Or the remaining wait and talk time is calculated by dividing by the discharge rate (eg, mA) that results in the value of "minutes" available for each operating mode of the cellular telephone 10. Finally, in step 10,
The calculated time value is displayed on the display 12 of the cellular telephone 10.

Interface Adapter-According to the preferred embodiment, the interface adapter is
To power the handheld cellular telephone 10,
And to provide speakerphone functionality. The cellular telephone 10 is operated by dialing or receives a call when mounted in the interface adapter, and the speakerphone function is controlled by the cellular telephone.

As shown in FIG. 30, when the cellular telephone 10 is initially installed in the interface adapter, that is, when the cellular telephone is in the "unlocked" position, power is supplied to the battery pack 300 and the battery pack 300. It is supplied to the cellular telephone from both interface adapters. After that, the cellular telephone 10 "locks"
In the position, the battery 302 is switched off.
Similarly, when cellular telephone 10 is returned to the "unlocked" position prior to removal from the interface adapter, battery 302 is switched back while the interface adapter continues to provide power. .
Therefore, no power loss occurs in the cellular telephone when it is attached to the interface adapter or when it is detached.

31 to 42 show the mechanical construction of an example of a desktop interface adapter (DIA) 400 according to the present invention. In-Vehicle Interface Adapter (VIA) 500 operates mechanically in essentially the same manner, and one skilled in the art can configure a VIA based on the following description for DIA 400. It should be. The electrical configuration of DIA 400 and VIA 500, and the cellular telephone 10 and battery 300 and their electrical relationships are discussed in detail below with respect to FIGS. 43 and 44.

31 to 34, the cellular telephone 10 is not mounted on the DIA 400. That is,
DIA400 is "ready to receive"
In position. When in the “acceptance standby” state (orientation), no power is supplied by the DIA 400. The DIA 400 includes a frame 402 and a cradle 404 located within the frame and adapted to support the cellular telephone 10. Cradle 4
04 is rotatably attached to the pin 405,
It is biased forward by the spring 406 until it reaches the stopper 408 of the frame 402. D
The IA 400 also includes a switch 410 that detects when the cellular telephone 10 is attached to the DIA. Switch 410 is "open" when DIA 400 is in the "standby ready" position.

As best shown in FIG. 32, a pair of lock levers-412 and 412a are pivotally attached to frame 402 by pins 414 and 414a. Rock lever
412 and 412a connect the cellular telephone 10 to DIA4.
Used to lock within 00. Spring 41
6 and 416a are used to bias the locking portions 418 and 418a of the lock levers 412 and 412a inwardly relative to each other. As shown in FIGS. 31 to 34, when the DIA 400 is in the “standby waiting” position, the pair of stoppers 420 and 420 a on the cradle 404 (biased forward by the spring 406) are
Lock levers 412 and 412a restrict inward rotation of the lock portions 418 and 418a. Therefore, the cellular telephone 10 is mounted in the cradle 404 without contacting the lock parts 418 and 418a. When the locks 418 and 418a are rotated outwardly away from each other, the switch 402 on the frame 422 detects. When the DIA 400 is in the "standby ready" position, the switch 422 is "closed".

35-38 show a cellular telephone mounted on the DIA 400 in the "unlocked" position, that is, the cellular telephone is placed in the cradle 404 and shown in FIG.
1 shows a state before being rotated in the direction of the arrow shown in FIG. Therefore, the stoppers 420 and 420a continue to prevent the lock portions 418 and 418a from rotating inward. When the cellular telephone 10 is placed on the cradle 404, the switch 410 is in the "closed" position. In response, DIA 400 begins supplying power to cellular telephone 10. However, the power is
It is also supplied from the pack 300 to the cellular telephone 10.

39-42 show the cellular telephone in the "locked" position, ie, the cellular telephone and cradle 404, being rotated in the direction of arrow 423 (rearward) to compress spring 406. . When the cradle 404 is rotated backward, the stopper 42
0 and 420a are disengaged from the rotation paths of the lock portions 418 and 418a. Therefore, the springs 416 and 41
6a is a recess 2 located on each side of the cellular telephone 10.
Push the locks 418 and 418a inwardly towards 0 and 20a. The cellular telephone 10 is then firmly attached and the spring 406 is attached to the cradle 4.
It does not rotate 04 forward. In addition, when the lock portion 418 rotates inward, the switch 422 is opened. In response to this, the battery pack 30
0 is turned off and the DIA 400 is the only power source for the cellular telephone 10. In addition, the battery 302 is charged when the cellular telephone 10 is in the “locked position”.

To remove the cellular telephone 10 from the DIA 400, a pair of release buttons 424 and 424a are used.
(FIG. 40) is pressed to lock lock levers-412 and 412.
This is done by rotating the rear parts 426 and 426a of a inward. In response, the locks 418 and 418a rotate outward, which causes the spring 40
6 to the position shown in FIGS.
Push 4 forward. The switch 422 is the lock part 41.
The battery pack 300 is "closed" by 8, and in response thereto, the battery pack 300 is turned on. Therefore, both the DIA 400 and the battery 300 supply power to the cellular telephone 10. Finally, the cellular telephone 10 has a cradle 4
04, which causes switch 410 to be "open". In response to this, the DIA 400 stops the power supply.

43 and 44 show the electrical connections between the interface adapter, battery pack 300 and cellular telephone 10 according to the preferred embodiment of the present invention. According to the preferred embodiment, the electrical connection between the cellular telephone 10 and the interface adapter is made through pins on the base or bottom 19 of the cellular telephone.

Shown in FIG. 43 is a charger 50, such as a Murata Cellular Charger, which converts AC power to DC power (eg, 6.5V and 2A) and charges the charging voltage Vcc. To the DIA400. The charger 50 is also used to charge the spare battery pack 301. Similarly, FIG. 44 shows a DC / DC converter 51 such as a Murata vehicle-mounted converter, which converts the power from the cigarette lighter into a charging voltage Vcc for supplying it to the VIA 500. .

As shown, for example, in FIG. 43, DIA microphone 428 and amplifier 430 provide audio signals to cellular telephone 10 through connectors 426 and 106 during speakerphone operation. However, if acoustic conditions are required, microphone 16 (FIG. 1) is used instead. To facilitate the use of either microphone, the voice DSP 110 adds gain to the transmit path. Audio signals from the cellular telephone 10 are similarly output by the speaker amplifier 432 and the speaker 43.
4 and 436. The volume of the speaker is controlled by the cellular telephone 10 by adjusting the volume up / down key 18. In response, gain or loss is added to the receive path by the volume DSP 110.

As shown, for example, in FIG. 43, the cellular telephone 10 is placed in the cradle 404 and the switch 4
When 10 is closed, power is supplied from DIA 400 to the BAT + line in battery pack 300. This supplied power is passed from the BAT + line to connector 148 of cellular telephone 10. The cellular telephone 10 and the DIA 400 are also the battery pack 30.
It is connected to the BAT- line in 0.

As noted above, FET switch 3
04 connects the BAT + line 302 to the battery 302. The gate of the FET switch 304 is connected to the DET pin. When the cellular telephone 10 is locked in the cradle 404 and the switch 422 is "opened", the transistors 436 and 438 (where they are off) are turned on and the voltage Vdia goes from 0V to Vcc.
Reach to. When a voltage is applied to the DET pin, the FET
Switch 304 is turned off and the battery is disconnected from the BAT + line. In addition, power is provided to the CHG + line to recharge the battery 302. As such, the DIA 400 recharges the battery 302 and similarly powers the cellular telephone 10. When the cellular telephone 10 is "locked" to the DIA 400, the LED 440 will indicate this.

For example, as shown in FIG. 44, VIA
Reference numeral 500 denotes a cradle 504, a stopper portion 508, lock levers 512 and 512a, stoppers 520 and 52.
0a and release buttons 524 and 524a,
All of these have similar structure and function as their respective counterparts in DIA 400. VIA external microphone 5
28 and amplifier 530 provide audio signals to cellular telephone 10 through connectors 526 and 134 during speakerphone operation. However, if acoustic conditions are required, microphone 16 (FIG. 1) is used instead. To facilitate the use of either microphone, audio DSP 110 adds gain to the transmission path. The audio signal from cellular telephone 10 is similarly sent to external speaker 534 or internal speakers 535 and 536 by switch 53.
3 is supplied to the speaker amplifier 532. The volume can be adjusted by adjusting the volume up / down key-18.
Adjusted from 0. In response, the audio DSP 110 adds gain or loss to the reception path.

As shown, for example, in FIG. 44, the cellular telephone 10 is placed in the cradle 504 and the switch 51
When “0” is “closed”, power is supplied from the VIA 500 to the BAT + line in the battery pack 300. This supplied power is passed from the BAT + line to connector 148 of cellular telephone 10. Cellular telephone 10 and VIA 500 are also connected to the BAT- line in battery pack 300.

As noted above, FET switch 30
4 connects the BAT + line to the battery 302.
The gate of the FET switch 304 is connected to the DET pin. When the cellular telephone 10 is "locked" in the cradle 504 and the switch 522 is "opened", the transistors 536 and 538 (where they are off) are turned on and the voltage Vvia is from 0V to Vcc.
Reach When a voltage is applied to the DET pin, the FET
The switch is turned off and the battery is disconnected from the BAT + line. In addition, power is provided to the CHG + line to recharge the battery 302. for that reason,
The VIA 500 recharges the battery 302 and at the same time powers the cellular telephone 10. When the cellular phone is "locked" into the VIA 500, LED5
40 indicates this.

Although the present invention has been described in terms of the preferred embodiments described above, numerous modifications and / or additions to the above-described preferred embodiments will be apparent to those skilled in the art. The scope of the present invention extends to all such changes and / or additions, and the scope of the present invention is limited only by the claims.

[Brief description of drawings]

FIG. 1 illustrates a handheld portable cellular telephone according to a preferred embodiment of the present invention.

FIG. 2 is a diagram showing a state in which a handheld portable cellular telephone according to a preferred embodiment of the present invention is attached to an interface adapter.

FIG. 3 is a logic circuit board (lo) according to a preferred embodiment of the present invention.
Figure showing a gic board).

4 is an enlarged view showing a substantially left half of the logic circuit board shown in FIG.

5 is an enlarged view showing a substantially right half of the logic circuit board shown in FIG.

FIG. 6 is a table showing an example of TDM bus address allocation in the preferred embodiment shown in FIG.

FIG. 7 is a diagram showing TDM bus slot allocation in the preferred embodiment shown in FIG. 3;

FIG. 8 is a diagram showing an example of data transfer on the TDM bus in the preferred embodiment shown in FIG.

FIG. 9 is a diagram showing an example of a memory map of the microprocessor in the preferred embodiment shown in FIG.

10 is a diagram showing an example of an address map of the microprocessor in the preferred embodiment shown in FIG.

11 is an enlarged view showing the upper part of the address map shown in FIG.

12 is an enlarged view showing the middle part of the address map shown in FIG.

13 is an enlarged view showing a lower part of the address map shown in FIG.

FIG. 14 is an ASI in the preferred embodiment shown in FIG.
The figure which shows an example of C.

FIG. 15 is an enlarged view showing a substantially left half of the ASIC shown in FIG.

16 is an enlarged view showing a substantially right half of the ASIC shown in FIG.

17 is a diagram showing an I / O map of the baseband DSP in the preferred embodiment shown in FIG.

FIG. 18 is a state diagram showing the operation of the digital signal processor (DSP) according to the preferred embodiment of the present invention.

FIG. 19 is a diagram showing a command procedure of the microprocessor in the preferred embodiment of the present invention.

FIG. 20 is a diagram showing a high frequency circuit board (radio frequency board) according to a preferred embodiment of the present invention.

21 is an enlarged view showing a substantially left half of the high-frequency circuit board shown in FIG.

22 is an enlarged view showing a substantially right half of the high-frequency circuit board shown in FIG.

FIG. 23 is a diagram showing an attenuation command signal in the preferred embodiment of the present invention.

FIG. 24 is a voice DSP in a preferred embodiment of the present invention.
FIG. 3 is a diagram showing the transfer of an audio signal between a baseband DSP and a baseband DSP.

FIG. 25 is a diagram showing a data block in a preferred embodiment of the present invention.

FIG. 26 is a diagram showing a circuit for executing a control algorithm in the preferred embodiment of the present invention.

FIG. 27 is a diagram showing a handheld / cellular phone and a battery pack according to a preferred embodiment of the present invention.

FIG. 28 is a flow chart showing a routine for monitoring the state of the battery.

FIG. 29 is a flow chart showing a routine for displaying information to the user.

FIG. 30 is a time chart in a preferred embodiment of the present invention.
To.

FIG. 31 is a front view of the interface adapter in the “ready to receive” position in the preferred embodiment of the present invention.

32 is a plan view of the interface adapter shown in FIG. 31. FIG.

FIG. 33 is a cross-sectional view taken along the line AA in FIG. 31.

34 is a side view of the interface adapter shown in FIG. 31. FIG.

FIG. 35 is a front view of the interface adapter shown in FIG. 31 mounting the cellular telephone in the “unlocked” position.

FIG. 36 is a plan view of the interface adapter and cellular telephone shown in FIG.

37 is a sectional view taken along the line BB in FIG. 35.

38 is a side view of the interface adapter and cellular telephone shown in FIG.

39 is a front view of the interface adapter shown in FIG. 31 with the cellular telephone mounted in the "locked" position.

40 is a plan view of the interface adapter and cellular telephone shown in FIG.

41 is a sectional view taken along the line CC in FIG. 39.

42 is a side view of the interface adapter and cellular telephone shown in FIG.

FIG. 43 shows an electrical connection between a handheld cellular telephone and a desktop interface adapter in the preferred embodiment of the present invention.

FIG. 44 is a diagram showing an electrical connection between a handheld cellular telephone and a vehicle-mounted interface adapter according to a preferred embodiment of the present invention.

[Explanation of Codes] 10 Cellular Telephone 12 Liquid Crystal Display 102 Voice Codec 110 Voice Digital Signal Processor 114 Baseband Digital Signal
Processor 118 Micro Softener 120 Baseband Codec 122 Micro Processor 124 LCD Controller 126 Static RAM 300 Battery Pack 400 Desktop Interface Adapter 406 Cradle 410 Switch 412 Lock Lever 418 Lock Part 428 Interface Interface Microphone 434 Interface speaker 500 Vehicle-mounted interface adapter 510 Switch

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 13, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction content]

-Circuit Configuration- According to a preferred embodiment, the circuit of the cellular telephone has, for example , a logic circuit board (logic board) shown in FIG. 3 and a high frequency circuit board (radio frequency) shown in FIG. 13 , for example.
board) and two circuit boards. The radio frequency circuit board provides the traditional FM transmit and receive functions used in current cellular phones. The high frequency circuit board is also used in North American Time Division Multiple Access (TDMA) transmission for pi / 4 differential quadrature phase.
It provides a linear transmit / receive function used for shift key (QPSK) modulation. The preferred embodiment apparatus digitally performs essentially all of the audio and signal processing functions, including A / D and D / A conversion of audio input and output signals, respectively.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction content]

A. Logic circuit board For example, as shown in FIG. 3, 4-wire / time division multiplexing (TD)
M) bus 116 is an integrated circuit (ASIC: ap) of the applicable characteristic.
replication specific integrated circuit). The ASIC 112 is a microprocessor 122,
Preferably, 68HC11 micro
It provides an interface to the processor and to a TDM bus 116 that is connected to another part of the logic circuit board.
The ASIC 112 has a data format conversion function (serial format) that enables data transfer between a serial port connected to the TDM bus 116 and a microprocessor 122 having a parallel format.・ Parallel and parallel / serial) are executed. Microprocessor 122 performs all control functions for cellular telephone 10. Such control functions include user interface functions such as driving the LCD controller 124. The LCD controller sends signals to the LCD display through the LCD display connector 140. You
The interface function also includes monitoring the key signals received from various keys through the keyboard connector 130. The control function is also a call process.
ing), voice storage, digital signal processor (DSP) control, and RF control. The memory map and address map for the microprocessor 122 are shown in FIGS. 7 and 8 respectively, and are shown in FIG.
It is described below in Section C with respect to 112.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

For example, as shown in FIG. 11 , a voice D
The SP 110 operates as a state machine under the control of the microprocessor 122. The voice DSP 110 operates in either of several states or modes, both analog and digital. These modes are described below with respect to the functions performed in connection with each mode.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

In accordance with the preferred embodiment, upon power up, the voice DSP 110 initializes all hardware, waits for about 5 milliseconds, and then waits for a "low power" idle mode.
Go to DO 01. For example, as shown in FIG. 12, INT
One line is set to "H (high)" during the initialization process when the power is turned on. Harm from the microprocessor 122 appearing on the INT1 line of the voice DSP 110.
A hardware interrupt (short "L" pulse) causes the voice DSP to leave the idle mode 01 and proceed to the main command mode. In command mode, the voice DSP 110 is the microprocessor 12
Wait for command from 2. Microprocessor 1
When the command comes from 22, the voice DSP 110
Moving to one of the operating modes, the microprocessor 12
It stays in that mode until the command for changing the mode arrives from 2. If the voice codec 102 is needed in a given operating mode, the microprocessor 122 will activate the voice codec prior to the interrupt. No interrupt is required when switching from one mode to another.
The exit current mode command causes the voice DSP 110 to return to the idle mode 01. Hereinafter, FIG. 11 will be further referred to.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

B. TDM Bus As discussed with respect to FIG. 3, microprocessor 12
2 is connected to the TDM bus 116 via the ASIC 112. TDM bus 116, for example, with the slot allocation shown in address assignment and 5 shown in FIG. 4, operates as an 8-slot system. TDM
Microprocessor 122 is fixed in slot 0 to generate the synchronization signal for bus 116. The audio codec 102 is fixed to the slot 2. According to the preferred embodiment, audio DSP 110 and baseband D
The SP 114 performs transmission with a multi-slot / frame.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction content]

As shown in FIG. 6 , each frame contains eight slots. Within each slot,
Eight address bits and 16 data bits are carried (transmitted) in synchronization with the clock signal. A packet from one device consisting of command and data information will not be blocked by another packet from another device.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

C. An example of ASIC112 (Figure 3) by ASIC 112 invention is shown in FIG. As noted above, the memory map and address map for microprocessor 122 (FIG. 3), for example, shown in Figure 7. Figure 8
3 shows an address map for the ASIC 112.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

According to the preferred embodiment, a static R
The storage capacity of the AM 126 is 128 Kbytes. However, the microprocessor 122 can only access the 64-byte address range. Therefore, the protect circuit 112d is
It also includes a bank change circuit that allows access to the entire 28K bytes. Microprocessor 1
22 writes data to address 0344H to enable the bank change function. When the microprocessor 122 addresses the range 2000H to 3FFFH, the microprocessor 122 addresses the address 034.
The range shown in FIG. 7 is actually addressed according to the contents of the 4H register.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

14.4 MHz (XIN1) and 7.7
2 with each frequency of 76MHz (XIN2)
The two clock signals are received by the frequency divider circuit 112e. Frequency dividing circuit 112e is then Fig 13 (TDMC
For high frequency circuit board shown in LK1) and TDM
It provides a 1.8 MHz clock signal for bus 116 (TDMCLK2). The frequency divider circuit 112e also
6. 3.6 MHz clock signal for internal circuitry ASIC 112, and 7. for microprocessor 122.
It also provides a 2 MHz clock signal.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

The ASIC 112 includes a TDM transmitter circuit 112f that includes several registers that operate as follows. The Transmit Channel Select (TSCR) Register (0350H) identifies which timeslot is available to the microprocessor 122. For example, if such a slot contains slot 0 and slot 4, as shown in FIG. 5 , the contents of this register would be 11H. The TDM Transmit Address (TTA) Register (0351H) uses the address shown in FIG. 5 to determine which of the voice codec 102, voice DSP 110, or baseband DSP 114 should be transmitted. First, TDM transmission data (TRT1)
Register (0352H) is used to store the upper 8 bits of data to be transmitted over TDM bus 116. The TDM Transmit Data (TRT2) Register (0353H) is then used to store the lower 8 bits of data to be transmitted over TDM Bus 116.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

After the microprocessor 122 (FIG. 3) has specified the contents of the TSCR, TTA, TRT1 and TRT2 registers, the ASIC 112 can
The data stored in the T1 and TRT2 registers is transferred to the device specified in the TTA register using the time slot specified in the TSCR register and the TDM bus 116 (FIGS. 3, 4 and 5 ). To send. When the ASIC 112 completes the transmission, the ASIC 11
2 is the EOF of the interrupt register (035CH)
An interrupt signal for setting the TX flag to "1" is supplied to the microprocessor 122. Then, the microprocessor 122 reads the contents of the interrupt / transmission empty clear register (0354H). Then, the interrupt signal is disabled and the EOFTX flag is set to "0". Finally, the microprocessor 12
2 can read the contents of the Transmit Channel Number Monitor Register (0355H) to determine the current timeslot number.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction content]

The ASIC 112 also includes an energy management unit (EMU) interface circuit 112h. Energy management function diagram
18 is described below.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction content]

The DSP decoder circuit 112i is used for address decoding the base band DSP 114. FIG. 10 shows the I / O of the baseband DSP 114.
An O map is shown. The I / O port expanded for the baseband DSP 114 is a latch type write only
It is provided by the DSP I / O circuit 112L which is an output port.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Name of item to be corrected] 0045

[Correction method] Change

[Correction content]

D. High Frequency Circuit Board (RF Board) The high frequency circuit board according to the preferred embodiment is a logic circuit board (logic board) with connectors 136 and 138 shown in FIG.
connected to ard), which is illustrated in Figure 13, for example. The upper part of the high-frequency circuit diagram is the transmission path, and the lower part of the figure is the reception path. The high frequency circuit board has full duplex transmit and receive capability because it is required in analog mode. Although full duplex is not needed for digital mode, the North American dual mode system has an analog control channel. As such, an analog control channel is required even if the cellular telephone is operating in digital mode.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0055

[Correction method] Change

[Correction content]

When the cellular telephone 10 is operating in analog mode, the only command that the voice DSP 110 sends to the baseband DSP 114 is an 8-bit attenuation command (eg, shown in FIG. 14 ). Yes, such commands are sent only while the echo suppression function (described below) is working. When the cellular telephone 10 is operating in analog mode, any command or data will be
It is not sent from the SP 114 to the voice DSP 110.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Change

[Correction content]

-Digital Call-The operation of the digital mode is similar to that of the analog mode, except that there is no FM analog signal. That is, the signals transmitted to and received from the base station are digital signals. When operating in digital mode, the audio signal from the microphone is digitized by the audio codec 102. Voice DS
P110 converts the digitized audio signal to VSE
LP encode and compress. For example, as shown in FIG. 15 , a voice DSP 110 may use a portion of the audio signal for 17 words during a 20 msec full rate frame (or 40 msec half rate frame). Baseband DSP114 in the form of data block
Transfer to. Such block transfers are on the TDM bus 1
16 and is synchronized in hardware by the hardware SYNC signal from the baseband DSP 114. Similarly, the base band DSP114
Is a full-rate frame (or 40 ms each)
During a millisecond half-rate frame, a block of 17 words of data is transferred to the voice DSP 110.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Change

[Correction content]

The control information is contained in the 12-bit form defined in the final word of the 17-word block. Voice DS from baseband DSP 114
The twelve control bits in the final word transferred to P110 are shown in FIG. 16 and are defined as follows, for example.

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0074

[Correction method] Change

[Correction content]

—Echo Suppression— FIG. 17 shows how the voice DSP 110 executes an echo suppression control / algorithm. The control algorithm is
Essentially the same is true for analog and digital modes. Echoes are suppressed by introducing losses in one of the transmit and receive paths when the energy in the other path is greater than the energy in one path and higher than the selected threshold. The loss is about 0 to 40 dB. In other words, one of the aisles is "switched off" while the other aisle is "switched on".

[Procedure Amendment 19]

[Document name to be amended] Statement

[Correction target item name] 0076

[Correction method] Change

[Correction content]

During a digital call, the voice DSP 110
Is the digital call mode 00 which is the primary operation mode.
(See FIG. 11 ). Microprocessor 12
2 must enable the voice codec 102 before entering this mode. Echo suppression is performed directly on the codec data.

[Procedure amendment 20]

[Document name to be amended] Statement

[Correction target item name] 0080

[Correction method] Change

[Correction content]

Regarding the audio recording function, the microprocessor 122 activates the audio codec 102 and then sends an audio recording mode command to the audio DSP 110. In response to the voice record mode command, voice DSP 110 proceeds to audio record mode 02 (see FIG. 11 ). In the audio recording / mode 02, the audio DSP 110 reads the sample value from the A / D converter of the audio codec 102. These sample values are VSELP encoded and sent as a 11-word block to the microprocessor 122 at a 20 ms rate. The microprocessor 122 stores this 11-word block in the static RAM 126. When echo suppression is activated, no audio sidetone is produced. That is, the audio DSP 110 is the D / of the audio codec 102.
The recorded audio portion is not transmitted to the A converter and external connector 106.

[Procedure correction 21]

[Document name to be amended] Statement

[Correction target item name] 0081

[Correction method] Change

[Correction content]

Regarding the audio playback function, the microprocessor 122 activates the audio codec 102 and then sends an audio playback mode command to the audio DSP 110. In response to this audio playback / command, the DSP 110 proceeds to audio playback / mode 03 (FIG. 11 ). In the audio reproduction mode 03, the voice DSP 110 is the microprocessor 1
22 (this processor fetches blocks from static RAM 126), receives 11 word blocks, VSELP decodes such 11 word blocks, and outputs the output sample values to D of speech codec 122.
/ Tell the A converter. The analog signal is transferred to the speaker. During the audio playback mode, any data is transferred from the voice DSP to the microprocessor 12
I can't send it to 2.

[Procedure correction 22]

[Document name to be amended] Statement

[Name of item to be corrected] 0083

[Correction method] Change

[Correction content]

Regarding the digital call play function, the microprocessor 122 activates the voice codec 102 and then sends a digital call play mode command to the voice DSP 110. This digital call playback mode
In response to the command, the voice DSP 110 proceeds to the digital call reproduction mode 05 (FIG. 11 ). Microprocessor 122 then sends the 11 word VSELP encoded blocks from static RAM 126 to audio DSP 110 at a 20 millisecond rate. De-
Data is then sent to the channel. When recording is not occurring, any data will be sent to the microprocessor 1
Not sent to 22. Furthermore, echo suppression is not required, since only one path, the voice to the channel, is active.

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0084

[Correction method] Change

[Correction content]

Regarding the digital call recording function, the microprocessor 122 activates the voice codec 102 and then sends a digital call recording command to the voice DSP 1.
Send to 10. In response to the digital call record mode command, the voice DSP 110 causes the digital call record mode.
Go to step 04 (Fig. 11 ). In this mode, the audio DSP 110 transfers the 11 word VSELP encoded blocks to the microprocessor 122.
Send at 0 ms rate. Microprocessor 122
Uses this 11-word block as static RAM1
Store at 26. When the digital call recording function is being performed in response to an unanswered call, no data is sent to the channel and echo suppression is not required. However, if the digital call recording function is performed during an active call, echo suppression is performed on the codec data.

[Procedure correction 24]

[Document name to be amended] Statement

[Correction target item name] 0086

[Correction method] Change

[Correction content]

Regarding the analog call playback function, the microprocessor 122 first of all determines the audio codec 1
02, then sends an analog call play command to the voice DSP 110. In response to this analog call reproduction command mode, the voice DSP 110 proceeds to the analog call reproduction mode 07 (FIG. 11 ). In this mode, data from static RAM 126 is sent by microprocessor 122 at a rate of 20 milliseconds in the form of 11 word VSELP encoded blocks to audio DSP 110. The data is
It is then VSELP decoded and sent as a digital stream to the baseband DSP 114. When no recording is taking place, no data is sent to the microprocessor 122. In addition, echo suppression is not needed because only voice to one path, ie the channel, is active.

[Procedure correction 25]

[Document name to be amended] Statement

[Correction target item name] 0087

[Correction method] Change

[Correction content]

Regarding the analog call record function, the microprocessor 122 first activates the voice codec 102 and then sends an analog call record command to the voice D.
Send to SP110. In response to this analog call record command mode, the voice DSP 110 proceeds to analog call record mode 06 (FIG. 11 ). In this mode, the voice DSP 110 monitors the data sent from the baseband DSP 114 to the D / A converter of the voice codec 102, VSELP-encodes the data, and outputs the 11 words. The VSELP encoded block is processed by the microprocessor 122 at a rate of 20 milliseconds.
Send to. The encoded block is then stored in static RAM 126. When the analog call recording function is being performed in response to an unanswered call, no data is sent on the channel and echo suppression is not required. However, during an active call, the voice DSP 110 is also sent from the baseband codec 120 to the baseband DSP 114 when the analog call recording function is running and echo suppression is activated. Monitor the data and send the appropriate attenuation command to the baseband DSP.

[Procedure Amendment 26]

[Document name to be amended] Statement

[Correction target item name] 0088

[Correction method] Change

[Correction content]

-Battery Pack and Battery Time Monitoring-As shown in FIG. 18 , for example, the battery pack 300.
Is mounted in the handheld cellular telephone 10. The electrical connection between them is facilitated by pins in a manner generally known in the art. The battery pack 300 includes a battery 302, preferably a NiMH battery, and a FET switch 304. Battery 302
When the FET switch 304 is turned on, BA
Power the cellular telephone 10 through the T + line. The battery 302 is also connected to the BAT- line. The battery pack 300 additionally includes a voltage regulator 306 and a battery management circuit 308 that monitors the condition of the battery 302, preferably Benchmarq Electronic.
s) company bq2010 energy management unit. The monitoring function of the battery management circuit 308 includes recharge monitoring and capacity monitoring.

[Procedure Amendment 27]

[Document name to be amended] Statement

[Correction target item name] 0092

[Correction method] Change

[Correction content]

FIG. 19 and FIG. 20 show a micro-display for monitoring the status of the battery 302 and displaying status information.
An example of a routine utilized by the processor 122 is shown. The illustrated routine adapts to the user's usage aspects and predicts the amount of time remaining for operation of the cellular telephone in both standby and call modes.

[Procedure correction 28]

[Document name to be amended] Statement

[Correction target item name] 0093

[Correction method] Change

[Correction content]

FIG. 19 shows the update of the average usage parameters of the cellular telephone 10 and the standby and call modes.
2 shows an interrupt routine utilized by the microprocessor 122 to make an estimate of the amount of current that will be needed during the operation. Microprocessor 122 is programmed to execute the interrupt routine regularly, eg, every 100 milliseconds. Step 1
At, the microprocessor 122 determines the operational state of the cellular telephone 10.

[Procedure correction 29]

[Document name to be amended] Statement

[Correction target item name] 0095

[Correction method] Change

[Correction content]

The drain current information determined by the microprocessor 122 is stored in the static RAM 126 (not shown). Microprocessor 1
22 stores drain current information for each operation mode of the cellular telephone. This information, step 3 in FIG. 19
As shown in, the accumulation is performed for a period equal to the X interrupt time interval. X is determined based on the interrupt time interval and the resolution of the display used. Therefore, if the battery usage information is in minutes and the interrupt time interval is 100 milliseconds, the microprocessor 122
Accumulates battery usage information over 600 interrupt time intervals to provide a one minute resolution of displayable battery usage information. The interrupt time interval is expanded or contracted.

[Procedure amendment 30]

[Document name to be amended] Statement

[Correction target item name] 0096

[Correction method] Change

[Correction content]

In step 4, the microprocessor 122, in both the call mode and the standby mode,
Determine the average drain current. Average during operation (runnin
g average) is calculated for each mode by dividing the total accumulated drain current value by, for example, a 60 second time base. The result is the average power consumption (or drain current) for each one minute interval (mA / min). The result is
For use by the display routine described below with reference to FIG. 20 are stored in the static RAM 126.

[Procedure correction 31]

[Document name to be amended] Statement

[Correction target item name] 0099

[Correction method] Change

[Correction content]

FIG. 20 shows the routine used by the microprocessor 122 to obtain the data provided by the update routine (FIG. 19 ) and convert that information into a display format familiar to the user. The routine is executed when the cellular telephone 10 is turned on, or when the user selects an appropriate key, for example, various miscellaneous keys 14a-1.
It is activated by pressing one of 4c.

[Procedure correction 32]

[Document name to be amended] Statement

[Correction target item name] 0100

[Correction method] Change

[Correction content]

For example, the display routine shown in FIG. 20 , as noted above, turns on the cellular telephone,
Alternatively, it is selected in step 6 by the use of a suitable key. In step 7, the microprocessor 122 addresses the battery management circuit 308. As noted above, the battery management circuit 308 provides an accurate calculation of available battery charge capacity, which is converted to an "energy-remaining" value or total available charge. In step 8, the microprocessor 12
2 relates to the usage routine shown in FIG. 19 and as described above, static RAM 126
Retrieve the average call drain and average standby drain parameters stored in.

[Procedure amendment 33]

[Document name to be amended] Statement

[Correction target item name] 0103

[Correction method] Change

[Correction content]

As shown in FIG. 21 , when the cellular telephone 10 is first installed in the interface adapter, ie, the cellular telephone is “unlocked”.
In the position, power is supplied to the cellular telephone from both the battery pack 300 and the interface adapter. Thereafter, when the cellular telephone 10 is in the "locked" position, the battery 302 is switched off. Similarly, when cellular telephone 10 is returned to the "unlocked" position prior to removal from the interface adapter, battery 302 is switched back while the interface adapter continues to provide power. . Therefore, no power loss occurs in the cellular telephone when it is attached to the interface adapter or when it is detached.

[Procedure amendment 34]

[Document name to be amended] Statement

[Correction target item name] 0104

[Correction method] Change

[Correction content]

22 to 33 show a desktop interface adapter (DIA) 400 according to the present invention.
The mechanical constitution of an example is shown. Automotive interface
The adapter (VIA) 500 operates mechanically in essentially the same manner, and those skilled in the art will appreciate that the DIA 40
The VIA should be able to be configured based on the following description for 0. Electrical configuration of DIA 400 and VIA 500, and cellular telephone 10 and battery 30
0 and for their electrical relationship, FIGS. 34 and 3
5 , is discussed in detail below.

[Procedure amendment 35]

[Document name to be amended] Statement

[Correction target item name] 0105

[Correction method] Change

[Correction content]

22 to 25 , the cellular telephone 10 is not attached to the DIA 400. That is, the DIA 400 is "ready to receiv
e) ”position. When in the “acceptance standby” state (orientation), no power is supplied by the DIA 400. The DIA 400 includes a frame 402 and a cradle 404 located within the frame and adapted to support the cellular telephone 10. The cradle 404 is rotatably mounted on a pin 405 and biased forward by a spring 406 until it reaches a stop 408 on the frame 402. The DIA 400 is also used when the cellular telephone 10
A switch 410 for detecting attachment to A is included.
Switch 410 is "open" when DIA 400 is in the "standby ready" position.

[Procedure correction 36]

[Document name to be amended] Statement

[Correction target item name] 0106

[Correction method] Change

[Correction content]

As best shown in FIG. 23 ,
The pair of lock levers-412 and 412a includes a pin 414.
And 414a, they are pivotally mounted to frame 402. The lock levers-412 and 412a DIA the cellular telephone 10
Used to lock within 400. Spring 4
16 and 416a are lock levers-412 and 412a.
Are used to bias the locking portions 418 and 418a of each other inwardly relative to each other. As shown in FIGS. 22 to 25, the DIA400 becomes "ready to receive" position, the pair of stoppers 420 and 420a on the cradle 404 (as pressed polarized forward by the spring 406),
Lock levers 412 and 412a restrict inward rotation of the lock portions 418 and 418a. Therefore, the cellular telephone 10 is mounted in the cradle 404 without contacting the lock parts 418 and 418a. When the locks 418 and 418a are rotated outwardly away from each other, the switch 402 on the frame 422 detects. When the DIA 400 is in the "standby ready" position, the switch 422 is "closed".

[Procedure amendment 37]

[Document name to be amended] Statement

[Correction target item name] 0107

[Correction method] Change

[Correction content]

[0107] FIGS. 26 to 29, "unlock" the cellular telephone attached to DIA400 at position, that is, the cellular telephone is placed in the cradle 404, FIG.
32 shows a state before being rotated in the direction of the arrow indicated by 32 . Therefore, the stoppers 420 and 420a are
The lock members 418 and 418a continue to be prevented from rotating inward. When the cellular telephone 10 is placed on the cradle 404, the switch 410 is in the "closed" position. In response, DIA 400 begins supplying power to cellular telephone 10. However, power is also being supplied to the cellular telephone 10 from the battery pack 300.

[Procedure amendment 38]

[Document name to be amended] Statement

[Correction target item name] 0108

[Correction method] Change

[Correction content]

[0108] FIGS. 30 to 33 show the state in the cellular telephone in the "locked" position, i.e. the cellular telephone and cradle 404, is rotated in the direction of arrow 423 (backward), the spring 406 is compressed . When the cradle 404 is rotated backward, the stopper 42
0 and 420a are disengaged from the rotation paths of the lock portions 418 and 418a. Therefore, the springs 416 and 41
6a is a recess 2 located on each side of the cellular telephone 10.
Push the locks 418 and 418a inwardly towards 0 and 20a. The cellular telephone 10 is then firmly attached and the spring 406 is attached to the cradle 4.
It does not rotate 04 forward. In addition, when the lock portion 418 rotates inward, the switch 422 is opened. In response to this, the battery pack 30
0 is turned off and the DIA 400 is the only power source for the cellular telephone 10. In addition, the battery 302 is charged when the cellular telephone 10 is in the “locked position”.

[Procedure amendment 39]

[Document name to be amended] Statement

[Correction target item name] 0109

[Correction method] Change

[Correction content]

Cellular telephone 10 from DIA400
To remove the pair of release buttons 424 and 424.
a (Fig. 31 ) is pressed to lock lock levers-412 and 41.
This is done by rotating the rear parts 426 and 426a of 2a inward. In response to this, the locking portions 418 and 418a rotate outward, which causes the spring 4
06 pushes the cradle 404 forward to the position shown in FIGS . 26-29 . The switch 422 is closed by the lock portion 418, and in response to this, the battery pack 300 is turned on. Therefore, both the DIA 400 and the battery 300 supply power to the cellular telephone 10. Finally, the cellular telephone 10 is removed from the cradle 404, which causes the switch 410 to be "open". In response to this, the DIA 400 stops the power supply.

[Procedure amendment 40]

[Document name to be amended] Statement

[Correction target item name] 0110

[Correction method] Change

[Correction content]

34 and 35 show the electrical connections between the interface adapter, the battery pack 300 and the cellular telephone 10, according to the preferred embodiment of the present invention. According to the preferred embodiment, the electrical connection between the cellular telephone 10 and the interface adapter is made through pins on the base or bottom 19 of the cellular telephone.

[Procedure Amendment 41]

[Document name to be amended] Statement

[Correction target item name] 0111

[Correction method] Change

[Correction content]

FIG. 34 shows Cellular Murata
It is a charger 50 such as a charger, and this charger is AC
The power is converted into DC power (for example, 6.5 V and 2 A), and the charging voltage Vcc is supplied to the DIA 400. The charger 50 is also used to charge the spare battery pack 301. Similarly, FIG. 35 shows a DC / DC converter 51 such as a Murata vehicle-mounted converter, which is powered by a cigarette lighter.
Is converted into a charging voltage Vcc for supplying to the VIA 500.

[Procedure amendment 42]

[Document name to be amended] Statement

[Name of item to be corrected] 0112

[Correction method] Change

[Correction content]

For example, as shown in FIG. 34 , the DIA
Microphone 428 and amplifier 430 provide audio signals to cellular telephone 10 through connectors 426 and 106 during speakerphone operation. However, if acoustic conditions are required, microphone 16 (FIG. 1) is used instead. To facilitate the use of either microphone, the voice DSP 110 adds gain to the transmit path. Audio signals from the cellular telephone 10 are similarly output by the speaker amplifier 432 and the speaker 43.
4 and 436. The volume of the speaker is controlled by the cellular telephone 10 by adjusting the volume up / down key 18. In response, gain or loss is added to the receive path by the volume DSP 110.

[Procedure amendment 43]

[Document name to be amended] Statement

[Name of item to be corrected] 0113

[Correction method] Change

[Correction content]

When the cellular telephone 10 is placed in the cradle 404 and the switch 410 is closed, as shown for example in FIG. 34 , power is provided from the DIA 400 to the BAT + line in the battery pack 300. This supplied power is passed from the BAT + line to connector 148 of cellular telephone 10. The cellular telephone 10 and the DIA400 are also the battery pack 3
00 to the BAT- line.

[Procedure correction 44]

[Document name to be amended] Statement

[Correction target item name] 0115

[Correction method] Change

[Correction content]

[0115] For example, as shown in FIG. 35, VI
A500 is a cradle 504, a stopper portion 508, lock levers 512 and 512a, stoppers 520 and 5
20a, and release buttons 524 and 524a, all of which have similar structure and function to their respective counterparts in DIA 400. The VIA's external microphone 528 and amplifier 530 are
Cellular telephone 1 through connectors 526 and 134
An audio signal is supplied to 0. However, if acoustic conditions are required, microphone 16 (FIG. 1) is used instead. To facilitate the use of either microphone, audio DSP 110 adds gain to the transmission path. The audio signal from the cellular telephone 10 is similarly transmitted by the external speaker 534.
Alternatively, the internal speakers 535 and 536 are supplied to the speaker amplifier 532 through the switch 533. The volume is adjusted from the cellular telephone 10 by adjusting the volume up / down key-18. In response, the voice DSP 110
Thus, gain or loss is added to the reception path.

[Procedure amendment 45]

[Document name to be amended] Statement

[Correction target item name] 0116

[Correction method] Change

[Correction content]

As shown in FIG. 35 , for example, the cellular telephone 10 is placed in the cradle 504 and the switch 5
When 10 is "closed", power is provided from the VIA 500 to the BAT + line in the battery pack 300.
This supplied power is passed from the BAT + line to connector 148 of cellular telephone 10. Cellular telephone 10 and VIA 500 are also connected to the BAT- line in battery pack 300.

[Procedure correction 46]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 illustrates a handheld portable cellular telephone according to a preferred embodiment of the present invention.

FIG. 2 is a diagram showing a state in which a handheld portable cellular telephone according to a preferred embodiment of the present invention is attached to an interface adapter.

FIG. 3 is a logic circuit board (lo) according to a preferred embodiment of the present invention.
Figure showing a gic board).

FIG. 4 is a TDM bus in the preferred embodiment shown in FIG .
The figure which shows an example of the address allocation of the address.

5 is a TDM bus in the preferred embodiment shown in FIG .
FIG.

FIG. 6 is a TDM bus in the preferred embodiment shown in FIG .
The figure which shows an example of the data transfer on a database.

FIG. 7 is a micro diagram of the preferred embodiment shown in FIG .
A diagram showing an example of a memory map of a processor.

FIG. 8 is the micro in the preferred embodiment shown in FIG .
A diagram showing an example of an address map of a processor.

FIG. 9 is an ASIC in the preferred embodiment shown in FIG .
The figure which shows an example.

10 is a base in the preferred embodiment shown in FIG .
The figure which shows the I / O map of band DSP.

FIG. 11 is a digital system according to a preferred embodiment of the present invention .
State transition diagram showing the operation of the digital processor (DSP)
(State diagram).

FIG. 12 is a micro-plug in a preferred embodiment of the present invention .
The figure which shows the command procedure of a processor.

FIG. 13 is a high frequency circuit board according to a preferred embodiment of the present invention .
The figure which shows a board (radio freque ncy board).

FIG. 14: Attenuation in a preferred embodiment of the present invention
・ Indicates command signal (attenuation command signal)
Fig.

FIG. 15 is a voice DSP in a preferred embodiment of the present invention .
Between the audio signal and the baseband DSP
The figure which shows transfer.

FIG. 16 is a data block in a preferred embodiment of the present invention .
Fig.

FIG. 17: Control algorithm in a preferred embodiment of the present invention
FIG. 6 is a diagram showing a circuit for executing a rhythm.

FIG. 18 is a hand-held type / separator according to a preferred embodiment of the present invention .
The figure which shows a ruler telephone and a battery pack.

FIG. 19 shows a routine for monitoring the state of the battery
The flowchart (flow diagram) shown.

FIG. 20 shows a routine for displaying information to the user .
Flow chart.

FIG. 21 is a time chart in a preferred embodiment of the present invention .
To.

FIG. 22 is a schematic diagram of an “acceptance” according to a preferred embodiment of the present invention .
Interface in " ready to receive" position
-Front view of the adapter.

FIG. 23 is an interface adapter shown in FIG .
Plan view of.

FIG. 24 is obtained along line AA in FIG . 22.
Sectional view.

FIG. 25 is the interface adapter shown in FIG .
Side view of.

Figure 26: Cellular phone installed in the "unlocked" position
Front view of the interface adapter shown in FIG.
Fig.

27 is an interface adapter shown in FIG . 26.
And a plan view of the cellular telephone.

28 is a view taken along line BB in FIG .
Sectional view.

FIG. 29 is an interface adapter shown in FIG .
And a side view of the cellular telephone.

Figure 30: Cellular phone mounted in "locked" position
FIG. 23 is a front view of the interface adapter shown in FIG. 22.

31 is an interface adapter shown in FIG .
And a plan view of the cellular telephone.

FIG. 32 is obtained along the line CC in FIG . 30.
Sectional view.

FIG. 33 is an interface adapter shown in FIG .
And a side view of the cellular telephone.

FIG. 34 is a hand-held type / separator according to a preferred embodiment of the present invention .
Ruler phone and desktop interface adapter
Shows the electrical connections between the descriptor.

FIG. 35 is a hand-held type / setter according to a preferred embodiment of the present invention .
Between the ruler phone and the in-vehicle interface adapter
The figure which shows the electrical connection between.

[Explanation of Codes] 10 Cellular Telephone 12 Liquid Crystal Display 102 Voice Codec 110 Voice Digital Signal Processor 114 Baseband Digital Signal
Processor 118 Micro Softener 120 Baseband Codec 122 Micro Processor 124 LCD Controller 126 Static RAM 300 Battery Pack 400 Desktop Interface Adapter 406 Cradle 410 Switch 412 Lock Lever 418 Lock Part 428 Interface Interface Microphone 434 Interface speaker 500 Vehicle-mounted interface adapter 510 Switch

[Procedure amendment 47]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 5]

FIG. 14

FIG. 15

FIG. 16

FIG. 22

[Figure 4]

[Figure 6]

[Figure 7]

[Figure 9]

[Figure 10]

[Figure 8]

FIG. 11

[Fig. 13]

FIG. 23

FIG. 24

FIG. 27

[Fig. 12]

FIG. 17

FIG. 18

FIG. 21

FIG. 25

FIG. 26

FIG. 28

FIG. 29

FIG. 30

FIG. 31

FIG. 19

FIG. 32

FIG. 33

FIG. 20

FIG. 34

FIG. 35

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location H04M 1/60 A 8838-5K 1/64 D 7190-5K 7304-5K H04B 7/26 109 T 72) Inventor Thomas K. Brown, USA, Texas, Plano San Simion Way, 2904 (72) Inventor, Toshiharu Fukuma, Texas, Plano, Preston Road, 1520, # 928 (72) Inventor, Yoji Tsujishita Kyoto Prefecture Nagaokakyo City 1-8-21 Mt.

Claims (16)

[Claims] 1. A cellular telephone, a battery pack adapted to be substantially mounted within the cellular telephone, and including a power source; an electrical connection between the power source and the cellular telephone; Switch means adapted to be turned off, supporting the cellular telephone in at least first and second positions and supplying power to the cellular telephone when the cellular telephone is supported Interface means including power supply means, controlling the switch means to be conductive when the cellular telephone is in the first position and the switch when the cellular telephone is in the second position. And a power control means for controlling the means to be in a non-conducting state. 2. The first position is an unlocked position and the second position is a locked position.
The speakerphone device described in 1. 3. The interface means comprises cradle means for receiving the cellular telephone, the cradle means being movable between the first and second positions and the interface means. The speakerphone device of claim 2, wherein the cradle means has locking means for preventing the cradle means from disengaging from the second position. 4. The speakerphone device according to claim 1, further comprising a detection unit that detects when the cellular telephone is in each of the first position and the second position. 5. A cellular telephone including receiving means for receiving analog and digital signals from a base station and transmitting means for transmitting analog and digital signals to the base station; and adapted to accept said cellular telephone. , When the cellular telephone is installed, the microphone and the speaker that are operably connected to the cellular telephone, respectively.
An interface device including a receiver, the receiver and the speaker constitute a reception path, and the transmitter and the microphone constitute a transmission path; and analogs received from the microphone and the receiver, respectively. Converter means for converting a signal into a digital signal, and sampling for sampling the digital signals in each of the transmission path and the reception path and storing those sample values according to a predetermined characteristic of the sampled digital signal Means for determining an energy value for each digital signal of the transmission path and the reception path over a predetermined time period based on a stored value of a predetermined characteristic; and the determined energy. A speaker means for switching off one of the transmission path and the reception path according to a value; Apparatus. 6. The speakerphone device according to claim 5, wherein the switch means includes a loss means for introducing a loss into one of the transmission path and the reception path. 7. The speakerphone device of claim 5, wherein the predetermined characteristic of the sampled digital signal is signal voltage. 8. A microphone, a speaker, a digital converter means for converting an analog signal from the microphone into a digital signal, and a memory means for storing the digital signal. A handheld cellular telephone, wherein the signal is converted to a digital signal and stored in said memory means. 9. A reproducing means for extracting the digital signal stored in the memory means, an analog converter means for converting the extracted digital signal into an analog signal, and transferring the analog signal to the speaker. 9. The handheld cellular telephone of claim 8, further comprising: 10. The handheld cellular system of claim 9 further comprising: encoding means for VSELP encoding the digital signal from the digital converter means prior to storing the digital signal in the memory means. Telephone. 11. Decoding means for VSELP decoding the VSELP-encoded digital signal retrieved from the memory means prior to converting the digital signal to the analog signal by the analog converting means, further comprising: Item 11. The handheld cellular telephone set forth in Item 10. 12. The handheld cellular telephone of claim 8 including receiving means for receiving a digital signal from a base station, wherein the digital signal received from the base station is stored in the memory means. 13. The method according to claim 9, further comprising transmitting means for transmitting the digital signal to the base station, wherein the digital signal transmitted by the transmitting means includes the digital signal retrieved from the memory means by the reproducing means. Handheld cellular telephone as described. 14. Receiving means for receiving an analog signal from a base station is further included, wherein the analog signal received from the base station is converted into a digital signal by the digital converter means and stored in the memory means. The handheld cellular telephone according to claim 8, wherein 15. An analog signal transmitted to said base station by means of transmitting means for transmitting an analog signal to said base station, said analog signal being taken out from said memory means by said reproducing means, said analog converter means. 10. The handheld cellular telephone according to claim 9, including a digital signal converted into an analog signal by. 16. A telephone microphone, a telephone speaker, a receiving means for receiving analog and digital signals from a base station, a transmitting means for transmitting the analog and digital signals to the base station, and a cellular phone. A battery pack adapted to be substantially mounted within and including a power source, switch means adapted to electrically couple the power source and the cellular telephone and be turned on and off, and a state of charge of the power source State monitoring means for continuously monitoring the battery pack, deciding means for deciding the remaining usage time of the battery pack based on the charging state according to the charging state of the power supply, and control means in response to the battery pack usage A cellular phone including a display means for providing a real-time display of the remaining time for, and at least locking the cellular phone. Interface means for supporting the cellular telephone at the fixed position and the unlocked position, the power source supplying means for supplying power to the cellular telephone when the cellular telephone is supported by the interface means, the interface microphone, and the interface. Interface means including a speaker, wherein when the cellular telephone is supported by the interface means, each of the interface microphone and the interface speaker is operably connected to the cellular telephone and the receiving means The interface speaker constitutes a receiving path, the transmitting means, one of the telephone microphones and the interface microphone constitute a transmitting path, and the cellular telephone is in an unlocked position. When the above Power control means for controlling the switch means to be turned on, and for controlling the switch means to be turned off when the cellular telephone is in the locked position, and each of the telephone microphone, the interface microphone and the receiving means. A converter means for converting an analog signal received from the digital signal into a digital signal, sampling each digital signal of the transmission path and the reception path, and storing a value according to a predetermined characteristic of the sampled digital signal. Sampling means, deciding means for deciding an energy value for each digital signal of the transmitting path and the receiving path over a predetermined period based on the stored value of the predetermined characteristic; Switch means for turning off one of the transmission path and the reception path in accordance with the energy value of Memory means for storing digital signals; memory recording means for storing digital signals from the receiving means and the converter means in the memory means; and digital signals stored in the memory means. A memory for transferring to the transmitting means, converting a digital signal from the memory means into an analog signal and transferring these analog signals to one of the telephone speaker, the interface speaker and the transmitting means. A speakerphone device including a reproducing means.