JP2003134319A - Communication terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication terminal which raises the possibility of reading a manuscript for other facsimiles transmission during the facsimile transmission. SOLUTION: For coding and decoding picture data, the communication terminal comprises a first codec 6 for processing at a high speed with a high function and a second codec 7a for processing at a low speed with a low function. When a call is terminated at a party's communication terminal, it discriminates the status of the first codec 6, and, if this codec 6 is not busy, preferentially activates the first codec 6 to send picture data, but, if busy, activates the second codec 7a to send the picture data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a first high-speed and highly-functional processing for encoding and decoding image data.
The present invention relates to a communication terminal device having a function including a codec and a second codec that processes at a lower speed and a lower function.

[0002]

2. Description of the Related Art Conventionally, in a communication terminal device such as a facsimile device, a hard codec for processing image data encoding / decoding and image data transmission / reception at high speed and with high function, and these processes by a hardware codec. Is also equipped with a soft codec that processes at low speed and with low functions, and these codecs are switched and used according to the communication capability of the other side during facsimile transmission / reception.

[0003]

However, in the above-mentioned conventional communication terminal device, when the image data stored in advance in the image memory is transmitted by facsimile, if the receiving device has a high receiving capability, that is, the other device. When the communication speed of the device is high, the transmission cannot be made in time without using the hard codec.

Therefore, before dialing, a hard codec is unconditionally secured and waits for a response from the other side, and although the scanner is available, the original cannot be read for another facsimile transmission. There was such a problem, and it was inconvenient.

The present invention has been made in consideration of the above circumstances, and provides a communication terminal device capable of increasing the probability that a document can be read for another facsimile transmission at the time of facsimile transmission. Is intended.

[0006]

In order to achieve the above object, in the communication terminal device according to the first aspect of the present invention, when the image data is encoded and decoded, it is processed at high speed and with high functionality. A first codec and a second codec that processes at a lower speed and a lower function than the first codec are provided, and when the communication terminal device on the other end receives the call, the status of the first codec is determined, and the first codec is not in use. Sometimes, the first codec is preferentially executed to transmit the image data, while when the first codec is in use,
The second codec is executed to transmit the image data.

According to another aspect of the communication terminal device of the present invention, when it is determined that the communication terminal device on the receiving side does not have the function corresponding to the first codec, the status of the first codec is not in use. , And has a function of executing the second codec and transmitting image data.

In the communication terminal device according to the third aspect of the present invention, the communication terminal device on the other side has a function corresponding to the first codec based on a reply signal returned from the communication terminal device on the other side in accordance with a normal facsimile communication procedure. It is determined whether or not it has.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an example of a main configuration of a communication terminal device of the present invention.

Here, the configuration of the facsimile apparatus F is shown as the communication terminal apparatus, but the present invention is not limited to this example, and includes a personal computer having an image transmission function and a printer. May be.

The facsimile apparatus F includes a CPU 1 for controlling the following parts, a CCD 2 for reading an original document and converting it into multivalued image data, and an image processing section 3 for converting the multivalued image data by the CCD 2 into black and white binary image data. A printer 4 that prints image data, a printer LSI 5 that controls the printer 4, a first codec, a hard codec 6 that encodes and decodes image data, and a facsimile device F that are necessary for operation. ROM 7 that stores various programs and RA that stores speed dials
M8, a key panel 9 including various operation keys and a liquid crystal screen, a modem 10 for modulating and demodulating various signals necessary for facsimile communication, an NCU 11 for controlling connection to the telephone line L, and image data And an image memory 12 for storing.

Reference numeral 7a is a soft codec which constitutes the second codec, and performs the coding and decoding processing mainly on the soft processing of the image data.

With such a configuration, the processing shown in the flowchart of FIG. 2 can be performed. That is, when there is a predetermined facsimile transmission instruction and the facsimile number of the other party is input (100), the CPU 1
When a call is made to the other party, a predetermined facsimile communication procedure signal is exchanged for the incoming call of the other party, and when ANSam or DIS is received from the signals sent from the other party (101), a hard codec described later If the status is referred to and is OFF (102), it is determined that the hard codec 6 is not in use.

When the signal received in step 101 is ANSam (103), the status of the hard codec 6 is turned on (104), and the hard codec 6 is turned on.
Is used to communicate at a communication speed higher than the communication speed of the V34 standard (105). That is, since the original is read, its image data is encoded by the hard codec 6 and stored in the image memory 12 and is transmitted sequentially, the transmission speed is V.
The communication speed is 34 standards or higher.

On the other hand, the signal received in step 101 is D
If IS (103), the hard codec status is turned off (106), and the soft codec 7a is used to communicate at a communication speed equal to or lower than the communication speed of the V17 standard (107). That is, the document is read, the image data is encoded by the software codec 7a, and the image memory 12
Since the data is stored in and sequentially transmitted, the transmission speed becomes a communication speed of V17 standard or less.

If the hard codec status is turned off with reference to the hard codec status (102), it is determined that the hard codec 6 is in use, and the process proceeds to step 107.

When the communication with the partner is completed, the line with the partner is connected (111). Note that in step 101, of the signals sent from the other party, the AN
Even when neither Sam nor DIS is received for a predetermined time, for example, 30 seconds (110), the line with the partner is disconnected.

[0018]

As can be understood from the above description, in the communication terminal device according to claim 1 of the present invention, when the communication terminal device on the other side receives an incoming call and the first codec is not in use, While the first codec is preferentially executed to transmit image data, when the first codec is in use, the second codec is executed to transmit image data, so the first codec is secured before dialing. Therefore, it is possible to increase the probability that the original can be read for another facsimile transmission at the time of facsimile transmission, which is convenient.

According to another aspect of the communication terminal device of the present invention, when it is determined that the communication terminal device of the called party does not have the function corresponding to the first codec, the status of the first codec is not in use. , The second codec is executed to transmit the image data, it is possible to transmit the image data according to the receiving capability of the other party.
The first codec can be left free for other jobs that want to use it.

According to another aspect of the communication terminal device of the present invention, the communication terminal device on the other side has a function corresponding to the first codec based on a reply signal returned from the communication terminal device on the other side in accordance with a normal facsimile communication procedure. Since it is determined whether or not the communication terminal device of the other party has the first codec compatible function, it can be determined with a simple configuration.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a main configuration of a communication terminal device of the present invention.

FIG. 2 is a flowchart for explaining a characteristic operation of the communication terminal device of the present invention.

[Explanation of symbols]

F: Facsimile machine 6 ... Hard codec 7a: Soft codec

Claims (3)

[Claims] 1. When encoding and decoding image data,
A first codec for processing at high speed and high function and a second codec for processing at lower speed and lower function are provided.
The status of the codec is determined, and when the first codec is not in use, the first codec is preferentially executed to transmit the image data, while when the first codec is in use, the second codec is executed. A communication terminal device that transmits image data. 2. The second codec according to claim 1, when the communication terminal device of the called party does not have the function corresponding to the first codec, even if the status of the first codec is not in use. A communication terminal device that has a function of executing and transmitting image data. 3. The communication terminal device according to claim 2, wherein the communication terminal device on the other side has a function corresponding to the first codec on the basis of a reply signal returned from the communication terminal device on the other side according to a normal facsimile communication procedure. Communication terminal device that determines whether or not