KR200344074Y1 - Automatic recording device of mobile phone - Google Patents

Abstract

The present invention relates to an automatic recording device of a mobile phone, and includes a baseband for modulating or demodulating voice and data for wireless data communication by adding an automatic recording function input unit to a terminal having a key used to start and stop voice recording. A codec, a module connected to the baseband chip to convert voice data into digital in pulse code modulation (PCM) form or to convert digital data in PCM form into voice data; and a voice codec connected to the baseband chip. It has a data structure for actually storing data and storing voice data of recent period, and is composed of RAM (RAM), which is mainly used as SRAM in the terminal, so that it can provide more convenient and sophisticated functions. You can increase your preference, and the terminal currently supports recording function without adding special hardware Since it can be implemented immediately, the development cost and time can be shortened.

Description

Automatic recording device of mobile phone

The present invention relates to an automatic recording device of a mobile phone, and more particularly to a terminal having a recording key (key).

In the conventional terminal, a recording key and a stop key mounted on the terminal are used to record a voice.

1 is a block diagram of a terminal having a conventional recording key, which is a recording key 11a used to start voice recording and a stop key 11b used to stop recording. A baseband chip 10 for controlling a terminal with a chip embedded in the terminal and modulating or demodulating voice and data for wireless data communication; and a voice connected to the baseband chip 10 Codec 20, which is a module for converting data into digital in pulse code modulation (PCM) form or converting digital data in PCM form into voice data, and the baseband chip 10. It is composed of a RAM (RAM) 30 is mainly used as an SRAM in the terminal that actually stores the voice data is connected to.

On the other hand, the baseband chip 10 is connected to the central processing unit (hereinafter referred to as CPU) 11 having the recording key 11a and the stop key 11b and the central processing unit, and the PCM data coming from the codec. Is encoded by QCEP, which is Code Division Multiple Access (CDMA) standard, and passed to the demod / mod part.On the contrary, the QCELP from Demod / Mod is decoded into PCM data and the codec ( 20) modulates the vocoder 12 and the QCELP-encoded data coming from the vocoder 12 according to the CDMA standard and transmits the modulated data to the analog stage and demodulates the data from the mode stage and the analog stage. It consists of a semod stage (13).

Referring to the operation of FIG. 1 configured as described above, the user first presses the recording key 11a to record the voice.

By the operation of the recording key 11a, the CPU 11 is interrupted and finds out that it is necessary to store the voice data until the stop key 11b is pressed.

In FIG. 1, the vocoder 12 in the baseband encodes PCM data of a voice coming from an external codec 20 according to the vocoder 12 algorithm (ex. QCELP). In this case, the voice is divided into 20ms units.

Accordingly, when 20ms voice data is generated, an interrupt is interrupted to the CPU 11 in the baseband, and the interrupted CPU 11 stores the encoded data in an external SRAM.

The CPU 11 repeats this operation until the stop key 11b is pressed.

When the recorded voice is reproduced, 20 ms of encoded voice data is read from the SRAM and transmitted to the vocoder 12.

The vocoder 12, which has received the voice data, decodes it and sends the voice data to the external codec 20 in the form of PCM data, and the codec 20 converts the PCM data into the original voice through a speaker. You will hear a voice to the user.

However, the conventional technique implemented as described above is inconvenient for the user since the user must press the recording key 11a to record and press the stop key 11b to stop recording.

In particular, if you want to record during a call, there is a risk of discomfort to the other party.

In addition, even if you press the recording key 11a a little late, the front part of the voice that you want to record may be inconvenient. In particular, when the voice part related to the number is recorded, such as a telephone announcement of 114 (telephone number guide), If it is broken, there is a problem that the entire recorded content becomes useless.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an automatic recording device of a mobile phone that enables the user to easily record the contents of a call that the user wants to store during a call.

The automatic recording device of a mobile phone according to the present invention for achieving the above object is to modulate the voice and data for wireless data communication by adding an automatic recording function input unit to a terminal having a key used when starting and stopping voice recording. A codec which is a module for demodulating and a module connected to the baseband chip 100 to convert voice data into digital in pulse code modulation (PCM) form or convert digital data in PCM form into voice data ( 200) is connected to the baseband chip 100, and actually stores the voice data, and has a data structure for storing voice data of a predetermined period of time to the RAM (RAM) 300, which is mainly used as an SRAM in a terminal. Characterized in that configured.

1 is a block diagram of a terminal having a conventional recording key;

Figure 2 is a block diagram of the terminal to add the automatic recording function to the conventional terminal to which the present invention is applied.

* Explanation of symbols for main parts of the drawings

100: baseband chip 110: central processing unit

111: recording key 112: stop key

120: Vocoder 130: D mode / mode

200: codec 300: RAM

310: Circular Queue 311,... 31n: starting point

400: speaker

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a terminal to which the automatic recording function is added to a conventional terminal to which the present invention is applied. In order to eliminate the inconvenience of the existing inconvenience of pressing a recording key when a user wants to record, a predetermined time (for example, 15 seconds) is shown. Using the technology to record the contents of the call during the implementation of the automatic recording function on the existing terminal with the recording key 111, and the circular Queue (310), which is a data structure for storing the voice data of the recent period It is configured by inserting into a RAM (RAM) 300 mainly used as an SRAM in the existing terminal.

In view of the above configuration, the automatic recording input may be implemented by adding an item to a menu of an existing terminal as an input means by which a user can set on / off and automatic recording time of the automatic recording function. .

In addition, the circular queue 310 is connected to the elements of the queue by a link, and the last element points to the first element to form a circle as a whole.

If there is no additional action in the circular queue 310, when the queue becomes full, the data first entered in the queue is deleted.

At this time, starting points (311, 312... 31n) of the circular queue 310 are starting positions when playing the recently stored voice data. When the queue is Queue Full, the positions are queued every time new data is stored. It moves along the link of the server and eventually points to the data stored in the queue.

Looking at the operation of Figure 2 configured as described above are as follows.

The user can enter the menu of the program additionally implemented in the existing terminal and set the automatic recording function and time.

The newly added menu includes an item to turn off the auto recording function and an item to specify a desired auto recording time.

The automatic recording time can be selected by selecting several things such as 5 seconds, 10 seconds, 15 seconds, 20 seconds in consideration of the memory size of the terminal.

If the auto recording function is set to off, the same operation as the existing terminal with a recording function is performed.

If the user selects the automatic recording time as 15 seconds and the automatic recording function is turned on, the CPU 110 creates a circular queue 310 for storing voice data for the last 15 seconds in the SRAM. .

Thereafter, the CPU 110 stores the 2 ms voice data encoded by the vocoder 120 in order from the starting point of the circular queue 310 along the circular queue link.

Circular Queue 310, as the name suggests, returns to the initial position when the queue is full of data due to the nature of the queue, so if the next data location is the same as the starting point, that is, the queue is full. The new data is stored at the point location, and the starting point moves to the next entry.

In this way, the circular queue 310 always stores the last 15 voice data, and the start point indicates the oldest data.

After the call, the user presses the record key to listen to the last 15 seconds of recording.

The 20ms encoded data from the start point to the start point is then stored in the SRAM's voice recording storage area one by one following the QueueLink.

The stored data is transmitted to the vocoder 120 in order by the user's playback command as in the existing terminal, and the data transmitted to the vocoder is transmitted to the user through the codec 200 to the speaker 400.

This allows you to save and listen to the last 15 seconds of your call whenever you want.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common knowledge in the technical field to which the present invention pertains that various substitutions, conversions, and changes can be made without departing from the technical idea of the present invention. It will be apparent to those who have

According to the present invention, it is possible to increase the preference of the product in that the user can provide a more convenient and stylish function by adding an automatic recording function to the existing terminal that needs to press the recording key and the stop key when the user wants to record the voice.

In addition, since it can be directly implemented in the terminal that supports the current recording function without adding any special hardware, it has the effect of reducing the development cost and time period.

Claims (5)

In a portable terminal equipped with a voice recording function, A baseband chip that modulates or demodulates voice and data for wireless data communication by adding an automatic recording function input unit to a terminal having a key used to start and stop voice recording; A codec connected to the baseband chip and converting voice data into digital in pulse code modulation (PCM) form or converting digital data in PCM form into voice data; A mobile phone, comprising: a RAM connected to the baseband chip to actually store the voice data and having a data structure for storing voice data of a recent period. Automatic recording device. The method of claim 1, wherein the baseband chip, An automatic recording device for a mobile phone, characterized in that an item is added to a menu as an input means by which the user can set the automatic recording function on / off and the automatic recording time to the terminal. The method of claim 1, wherein the ram, An automatic recording device of a mobile phone, characterized by the fact that the elements of the circular queue are connected by a link, and the last element points to the first element to form a circle. The method of claim 1, wherein the ram, Automatic recording device for mobile phones, which deletes the data entered in the queue when the elements of the queue become full when no action is taken in the circular queue. The method of claim 4, wherein If the starting point, which is the starting point when playing the recently stored voice data, is that the elements of the queue are full, whenever the new data is stored, the position is moved along the link of the queue to point to the data stored in the queue first. Automatic recording device of a mobile phone, characterized in that.