CN103813421A - Intelligent mobile terminal electricity-saving method and intelligent mobile terminal - Google Patents

Intelligent mobile terminal electricity-saving method and intelligent mobile terminal Download PDF

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Publication number
CN103813421A
CN103813421A CN201210443787.XA CN201210443787A CN103813421A CN 103813421 A CN103813421 A CN 103813421A CN 201210443787 A CN201210443787 A CN 201210443787A CN 103813421 A CN103813421 A CN 103813421A
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service
modem
response result
intelligent
mobile terminal
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张博
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ZTE Corp
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ZTE Corp
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Priority to CN201210443787.XA priority Critical patent/CN103813421A/en
Priority to PCT/CN2013/079101 priority patent/WO2013167025A2/en
Publication of CN103813421A publication Critical patent/CN103813421A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3278—Power saving in modem or I/O interface
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)

Abstract

The invention discloses an intelligent mobile terminal electricity-saving method. When the intelligent mobile terminal carries out a basic communication service, an application processor (AP) enters a sleep state and only a Modem works to complete the basic communication service; and when the intelligent terminal carries out intelligent service, the AP and the Modem works simultaneously to complete an intelligent service. In addition, the invention also discloses an intelligent mobile terminal. According to the invention, the power of a battery can be saved; and the standby time and the cruising power of the intelligent mobile terminal can be enhanced.

Description

Intelligent mobile terminal power saving method and intelligent mobile terminal
Technical Field
The invention relates to a power saving technology of a mobile terminal, in particular to an intelligent mobile terminal power saving method and an intelligent mobile terminal.
Background
In recent years, with the popularity of smart terminals, users increasingly prefer to use smart phones (smartphones). Compared with the Feature Phone, the smart Phone has not only the basic Communication function of the mobile terminal, but also powerful multimedia functions, such as bluetooth, wireless fidelity (WiFi), Global Positioning System (GPS), Near Field Communication (NFC), and Sensor (Sensor).
From the aspect of hardware composition, the intelligent mobile terminal can be divided into two parts: an Application Processor (AP) and a wireless Modem (Modem); the AP is used for running an operating system and various application programs and communicating with the Modem through an interface; the Modem mainly completes the interaction function with the wireless network. In the prior art, an AP is a core part formed by hardware of an intelligent mobile terminal, and basic communication services of the mobile terminal, such as making a call, sending a short message, and intelligent services, are all completed by a powerful CPU of the AP.
Also, because of the numerous functions, the CPU of the AP needs to respond to different inputs from the user in real time to process various applications, which increases battery power consumption. Therefore, the battery of the intelligent mobile terminal is consumed more quickly and the charging frequency is higher for the functional mobile terminal and the intelligent mobile terminal with the same battery capacity.
The intelligent mobile terminal brings rich multimedia experience for users and simultaneously brings the problems of short standby time and poor cruising ability. When a basic communication service is performed, the poor cruising ability of the mobile terminal may cause the communication service to be interrupted, which affects the communication quality. In theory, this problem can be solved in two ways: first, increasing battery power by increasing battery capacity; secondly, changing the architecture of the mobile terminal system; however, increasing the battery capacity in a lump will only make the battery larger and larger, limited by the size of the smart mobile terminal, which is not desirable; therefore, a solution is urgently needed to solve the problems of short standby time and poor endurance of the intelligent mobile terminal by changing the architecture of the mobile terminal system.
Disclosure of Invention
In view of the above, the present invention provides a power saving method for an intelligent mobile terminal and an intelligent mobile terminal, which can save the electric quantity of a battery, thereby enhancing the cruising ability and the standby time of the intelligent mobile terminal.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides an electricity-saving method for an intelligent mobile terminal, which comprises the following steps:
when the intelligent mobile terminal carries out basic communication service, the AP enters a sleep state, and only the Modem works to finish the basic communication service;
and when the intelligent mobile terminal carries out intelligent service, the AP and the Modem work simultaneously to finish the intelligent service.
In the above solution, the switching between the basic communication service state and the intelligent service state is completed by a switch function key.
In the above scheme, the AP entering the sleep state is: and the CPU of the AP shields the interrupt function of the AP, closes the AP and peripheral equipment of the AP and enables the AP to enter a sleep state.
In the above solution, the step of completing the basic communication service by the Modem includes:
the processor of the Modem responds to the basic communication service; the response result of the audio service in the basic communication service is output by the Modem under the drive of the first audio driving module of the Modem; the response result of the video service in the basic communication service is output by the Modem under the drive of the first display driving module of the Modem;
and the processor of the Modem activates a user interface UI, and displays the audio service response result and the video service response result to a user or sends the audio service response result and the video service response result to the base station through the UI.
In the foregoing solution, the enabling of the AP and the Modem to simultaneously complete the intelligent service includes:
the processor of the Modem shields the interrupt function of the processor, and awakens the CPU of the AP through a first interface;
the CPU of the AP responds to the intelligent service; the response result of the audio service in the intelligent service is output by the AP under the drive of the second audio drive module; the response result of the video service in the intelligent service is output by the AP under the drive of the second display drive module;
the CPU of the AP activates a UI, and the audio service response result and the video service response result are displayed to a user or sent to the Modem through the UI;
and the Modem modulates the audio service response result and the video service response result and then sends the modulated audio service response result and the modulated video service response result to the base station.
The invention also provides an intelligent mobile terminal, which comprises the AP and the Modem; wherein,
the AP is used for processing intelligent services and exchanging data with the Modem through a first interface;
the Modem is used for processing basic communication service and intelligent service, finishing the exchange of data with the AP through the first interface and finishing the interaction with a wireless network through a wireless interface.
In the foregoing aspect, the Modem includes: the system comprises a processor, a basic communication service module, a first audio driving module, a first input driving module, a first display driving module and a switching module;
the processor receives and responds to the basic communication service in the basic communication service module under the action of the first input driving module; the response result of the audio service in the basic communication service is output by the Modem under the drive of the first audio driving module of the Modem; the response result of the video service in the basic communication service is output by the Modem under the drive of the first display driving module of the Modem;
the processor activates a UI, and the audio service response result and the video service response result are transmitted to a user through the UI or are sent to a base station after being modulated;
and the switching module is used for responding to the switching function key.
In the above solution, the AP further includes a CPU, an intelligent service module, a second audio driver module, a second input driver module, and a second display driver module;
the CPU receives and responds to the intelligent service in the intelligent service module under the action of the second input driving module; the response result of the audio service in the intelligent service is output by the AP under the drive of the second audio drive module; the response result of the video service in the intelligent service is output by the AP under the drive of the second display drive module;
and the CPU activates a UI, and the audio service response result and the video service response result are transmitted to a user or sent to the Modem through the UI.
In the above scheme, the Modem modulates the audio service response result and the video service response result of the intelligent service and then sends the modulated audio service response result and the modulated video service response result to the base station.
In the above solution, the switching function key is: any key of the intelligent mobile terminal or a specific key.
According to the power-saving method of the intelligent mobile terminal and the intelligent mobile terminal, when the intelligent mobile terminal is in an intelligent state, the AP and the Modem work simultaneously; when the intelligent mobile terminal is converted into a state of carrying out the basic communication service, the AP is enabled to enter a sleep state, and only the Modem is needed to carry out the processing of the basic communication service; therefore, the power consumption of the intelligent mobile terminal can be reduced, the electric quantity of the battery is saved, the standby time of the intelligent mobile terminal is prolonged, and the cruising ability of the intelligent mobile terminal is enhanced.
Drawings
FIG. 1 is a schematic diagram of a flow chart of an implementation of the power saving method of the intelligent mobile terminal according to the present invention;
FIG. 2 is a schematic diagram of the implementation process of the power saving method for the intelligent mobile terminal in the basic communication service;
FIG. 3 is a schematic diagram of an implementation process of the power saving method of the intelligent mobile terminal for performing the intelligent service;
fig. 4 is a schematic diagram of a composition structure of the intelligent mobile terminal of the present invention.
Detailed Description
As shown in fig. 1, the basic implementation of the power saving method for the intelligent mobile terminal provided by the present invention includes:
when the intelligent mobile terminal carries out basic communication service, the AP enters a sleep state, and only the Modem works to finish the basic communication service;
when the intelligent mobile terminal carries out intelligent service, the AP and the Modem work simultaneously to complete the intelligent service;
wherein, the conversion between the basic communication service state and the intelligent service state is completed by a switching function key;
the basic communication service comprises: basic operations such as standby, making a call, sending a short message, updating a phone book, setting an alarm and the like; the intelligent service comprises multimedia services such as camera shooting, WiFi and Bluetooth;
the Modem comprises a processor, a first audio driving module, a first display driving module, a first input driving module and a switching module;
the AP comprises a CPU, a second audio driving module, a second display driving module and a second input driving module;
specifically, the implementation process of the power saving method for the intelligent mobile terminal of the present invention when performing the basic communication service is shown in fig. 2, and includes:
step 200: when the intelligent mobile terminal carries out basic communication service, the function key is switched in a touch mode, the CPU of the AP shields the interrupt function of the AP and closes the AP and peripheral equipment of the AP, so that the AP enters a sleep state and does not respond to input operation any more;
here, the switching function key may be any key of the smart mobile terminal, or may be a specific key, which are all disposed on the touch screen, and the switching function key is responded by the switching module;
the interrupt function of the CPU of the AP is used for responding to the intelligent service, so that the interrupt function of the CPU of the AP needs to be shielded when the intelligent mobile terminal carries out basic communication service;
step 201: according to the touch switching function key, the intelligent mobile terminal hands over the basic communication service to the Modem for processing through the first input driving module;
specifically, the step of submitting the basic communication service to the Modem includes: the processor of the Modem responds to the basic communication service; the response result of the audio service in the basic communication service is output by the Modem under the drive of the first audio driving module of the Modem; and outputting a response result of the video service in the basic communication service by the Modem under the driving of the first display driving module of the Modem.
Step 202: and the processor of the Modem activates a User Interface (UI), and the audio service response result and the video service response result are displayed to a User or sent to the base station through the UI.
As can be seen from the above-mentioned technology, when the smart mobile terminal is in the standby state, the AP is put into the sleep state, and the Modem performs processing of the basic communication service.
Correspondingly, when the intelligent mobile terminal carries out intelligent service, the intelligent mobile terminal is converted from a standby state to an intelligent state; the implementation flow of the intelligent mobile terminal power-saving method of the invention when carrying out the intelligent service is shown in fig. 3, and comprises the following steps:
step 300: the intelligent mobile terminal is switched to an intelligent state from a standby state by a touch switching function key, and the processor of the Modem shields the interrupt function of the Modem so that the Modem does not respond to the input operation of the intelligent service any more;
here, the processor mask interrupt function of the Modem is to not respond to the input operation of the smart service, but the processor of the Modem also executes other operations, and the following schemes will describe the operations of the processor, such as: waking up the AP, modulating an intelligent service signal from the AP, and the like;
the processor of the Modem responds to the basic communication service of the intelligent mobile terminal through the interrupt function of the processor of the Modem, so the interrupt function of the processor of the Modem needs to be shielded firstly.
Step 301: the processor of the Modem awakens the CPU of the AP through a first interface;
the first interface is a connection interface between a processor of the Modem and the CPU of the AP; the first interface can adopt a Universal Serial BUS (USB) or a Serial port and memory sharing mode;
step 302: under the drive of a second input drive module of the AP, the intelligent mobile terminal delivers the intelligent service to the AP for processing;
specifically, the processing of handing the intelligent service to the AP includes: the CPU of the AP responds to the intelligent service; the response result of the audio service in the intelligent service is output by the AP under the drive of the second audio drive module; the response result of the video service in the intelligent service is output by the AP under the drive of the second display drive module;
step 303: the CPU of the AP activates a UI, and the audio service response result and the video service response result are displayed to a user or sent to the Modem through the UI;
step 304: and the Modem modulates the audio service response result and the video service response result and then sends the modulated audio service response result and the modulated video service response result to the base station.
In order to implement the method, the present invention further provides an intelligent mobile terminal, as shown in fig. 4, where the intelligent mobile terminal includes an AP40 and a Modem 41;
the AP40 is configured to process an intelligent service, and exchange data with the Modem41 through a first interface;
the Modem41 is configured to process a basic communication service and an intelligent service, complete data exchange with the AP40 through the first interface, and complete interaction with a wireless network through a wireless interface.
Further, the Modem41 includes a basic communication service module 410, a first audio driver module 411, a first input driver module 412, a first display driver module 413, a switching module 414, and a processor 415;
the AP40 includes an intelligent service module 400, a second audio driver module 401, a second input driver module 402, a second display driver module 403, and a CPU 404.
The first interface is a connection interface between the processor 415 of the Modem41 and the CPU404 of the AP 40; the first interface can adopt a USB or serial port or memory sharing mode;
specifically, when the intelligent mobile terminal performs a basic communication service, the CPU404 of the AP40 shields its interrupt function by touching the switch function key, closes itself and its peripheral devices, and enters a sleep state; under the action of the first input driving module 412, the processor 415 receives an input operation of a basic communication service and responds to the input operation; the processor 415 activates the UI, and transmits the audio service response result to the ear of the user through the UI or transmits the audio service response result to the base station after modulation by using the driving function of the first audio driving module 411; the video service response result is displayed to a user through a UI or is transmitted to a base station after being modulated by utilizing the driving action of the first display driving module 413; wherein the switching module 414 is configured to respond to the switching function key.
In the above scheme, the input operation includes: the operation of the local intelligent mobile terminal and the operation of the basic communication service sent by the remote intelligent mobile terminal through the base station; when the Modem41 receives the basic communication service from the base station, the processor 415 is required to demodulate the received basic communication service first and then respond; if not specifically stated, all the intelligent mobile terminals referred to in this specification are local intelligent mobile terminals.
When the intelligent mobile terminal performs the intelligent service, the processor 415 of the Modem41 shields the interrupt function of the terminal by touching the switch function key, and does not respond to the input of the intelligent service; then the processor 415 wakes up the CPU404 of the AP40 through the first interface; under the action of the second input driving module 402, the CPU404 receives an input operation of an intelligent service and responds to the input operation; the CPU404 activates a UI, and under the driving action of the second audio driver module 401, directly transmits a response result of the audio service included in the intelligent service module 400 to a user or sends the response result to the Modem through the UI, and the processor 415 of the Modem modulates the response result of the audio service and sends the modulated response result to the base station; under the driving action of the second display driving module 403, the CPU404 displays the video service response result included in the intelligent service module 400 to the user through the UI or sends the video service response result to the Modem through the first interface, and the processor 415 of the Modem modulates the video service response result and sends the video service response result to the base station through the wireless interface;
here, the processor 415 of the Modem41 masks the interrupt function so as not to respond to the smart traffic any more, but the processor 415 continues to receive, modulate and transmit the smart traffic from the AP 40;
in the above solution, the input operation includes: the method comprises the steps that a user operates a local intelligent mobile terminal and operates a remote intelligent mobile terminal through a base station; when the Modem41 receives the smart service from the base station, the processor 415 is required to demodulate the received smart service first and then transmit the received smart service to the AP.
The invention is further illustrated below with reference to examples 1 and 2.
Example 1:
in this embodiment, the intelligent mobile terminal is in a standby state, that is, in a basic communication service state at the previous time, at this time, only the Modem operates, and the AP is in a deep sleep state;
when the intelligent service is required to be carried out at the current moment and the intelligent mobile terminal is converted from the standby state to the intelligent state, firstly, the switching function key is touched, and the switching module responds to the switching function key; the processor 415 shields the self-interrupt function and does not respond to the input operation; and awakens the CPU404 through the first interface; under the driving of the second input driving module 402, the input operation is handed to the CPU404 for processing; the CPU404 activates the UI, responds to the audio service and the video service included in the intelligent service, presents a response result to a user or sends the response result to the Modem under the driving of the second audio driver module 401 and the second display driver module 403, and the processor 415 of the Modem enables a Modem function to modulate the response result and sends the modulated response result to the base station.
Example 2:
in this embodiment, at the previous time, the intelligent mobile terminal is in an intelligent service state, and the AP and the Modem operate simultaneously;
when a basic communication service is required to be carried out at the current moment and the intelligent mobile terminal is converted into the basic communication service from the intelligent service state, firstly, the switching function key is touched, and the switching module responds to the switching function key; the CPU404 shields its own interrupt function and no longer responds to the input operation of the basic communication service; under the action of the first input driving module 412, the input operation is processed by the processor 415, and the processor 415 responds to an audio service and a video service contained in the basic communication service; the CPU404 turns itself off and its peripheral devices, causing the AP to enter a sleep state; the processor 415 activates a UI, and under the driving of the first audio driving module 411 and the first display driving module 413, the processor presents a response result to a user through the UI or sends the response result to a base station through the wireless interface by modulation.
In the invention, when the intelligent mobile terminal is powered off and restarted, the working states of the restarted AP and the Modem are consistent with the states before the power off. That is to say, the AP and the Modem of the smart mobile terminal before the power-off are both in the working state, and then after the power-off is restarted, the AP and the Modem are still in the working state; before the shutdown, the AP is in a sleep state, and the Modem is in an operating state, so after the restart, the AP is also in the sleep state, and the Modem is also in the operating state.
The technical scheme of the invention is also suitable for the functional mobile terminal with the AP and Modem structures.
According to the intelligent mobile terminal power saving method and the intelligent mobile terminal, when the intelligent mobile terminal is in a basic communication service state, only the Modem is needed to work, and the AP is in a sleep state; when the intelligent mobile terminal is in an intelligent service state, the AP and the Modem work simultaneously; in the prior art, no matter the intelligent mobile terminal carries out basic communication service or intelligent service, the AP and the Modem are required to work simultaneously; obviously, compared with the prior art, the method and the device can save the battery power of the intelligent mobile terminal, and increase the standby time and the cruising ability.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims (10)

1. An intelligent mobile terminal power saving method is characterized by comprising the following steps:
when the intelligent mobile terminal carries out basic communication service, the AP enters a sleep state, and only the Modem works to finish the basic communication service;
and when the intelligent mobile terminal carries out intelligent service, the AP and the Modem work simultaneously to finish the intelligent service.
2. The intelligent mobile terminal power saving method of claim 1, wherein the transition between the basic communication service state and the intelligent service state is accomplished by switching function keys.
3. The power saving method for intelligent mobile terminals according to claim 1, wherein the entering of the AP into the sleep state is: and the CPU of the AP shields the interrupt function of the AP, closes the AP and peripheral equipment of the AP and enables the AP to enter a sleep state.
4. The power saving method for intelligent mobile terminal according to claim 3, wherein said Modem work to complete basic communication service includes:
the processor of the Modem responds to the basic communication service; the response result of the audio service in the basic communication service is output by the Modem under the drive of the first audio driving module of the Modem; the response result of the video service in the basic communication service is output by the Modem under the drive of the first display driving module of the Modem;
and the processor of the Modem activates a user interface UI, and displays the audio service response result and the video service response result to a user or sends the audio service response result and the video service response result to the base station through the UI.
5. The power saving method for intelligent mobile terminals according to any of claims 1 to 4, wherein the AP and the Modem simultaneously work to complete intelligent services, and comprises:
the processor of the Modem shields the interrupt function of the processor, and awakens the CPU of the AP through a first interface;
the CPU of the AP responds to the intelligent service; the response result of the audio service in the intelligent service is output by the AP under the drive of the second audio drive module; the response result of the video service in the intelligent service is output by the AP under the drive of the second display drive module;
the CPU of the AP activates a UI, and the audio service response result and the video service response result are displayed to a user or sent to the Modem through the UI;
and the Modem modulates the audio service response result and the video service response result and then sends the modulated audio service response result and the modulated video service response result to the base station.
6. An intelligent mobile terminal is characterized by comprising an AP and a Modem; wherein,
the AP is used for processing intelligent services and exchanging data with the Modem through a first interface;
the Modem is used for processing basic communication service and intelligent service, finishing the exchange of data with the AP through the first interface and finishing the interaction with a wireless network through a wireless interface.
7. The intelligent mobile terminal according to claim 6, wherein the Modem comprises: the system comprises a processor, a basic communication service module, a first audio driving module, a first input driving module, a first display driving module and a switching module;
the processor receives and responds to the basic communication service in the basic communication service module under the action of the first input driving module; the response result of the audio service in the basic communication service is output by the Modem under the drive of the first audio driving module of the Modem; the response result of the video service in the basic communication service is output by the Modem under the drive of the first display driving module of the Modem;
the processor activates a UI, and the audio service response result and the video service response result are transmitted to a user through the UI or are sent to a base station after being modulated;
and the switching module is used for responding to the switching function key.
8. The intelligent mobile terminal according to claim 6 or 7, wherein the AP comprises a CPU, an intelligent service module, a second audio driver module, a second input driver module, and a second display driver module;
the CPU receives and responds to the intelligent service in the intelligent service module under the action of the second input driving module; the response result of the audio service in the intelligent service is output by the AP under the drive of the second audio drive module; the response result of the video service in the intelligent service is output by the AP under the drive of the second display drive module;
and the CPU activates a UI, and the audio service response result and the video service response result are transmitted to a user or sent to the Modem through the UI.
9. The intelligent mobile terminal according to claim 8, wherein the Modem modulates the audio service response result and the video service response result of the intelligent service and then sends the modulated audio service response result and the modulated video service response result to the base station.
10. The intelligent mobile terminal of claim 6, wherein the switch function key is: any key of the intelligent mobile terminal or a specific key.
CN201210443787.XA 2012-11-08 2012-11-08 Intelligent mobile terminal electricity-saving method and intelligent mobile terminal Pending CN103813421A (en)

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PCT/CN2013/079101 WO2013167025A2 (en) 2012-11-08 2013-07-10 Power saving method for intelligent mobile terminal and intelligent mobile terminal

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