JP2001359066A - Communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication system that can record data without causing a timing deviation between a transmitter side and a receiver side. SOLUTION: The receiver side uses a timing notice section 12b and a communication section 16 to transmit timing notice data for instructing a data recording start (end) to the transmitter side. A communication section 26 and a timing notice reception section 23a of the transmitter side receive the data, a display section 24 and a ringing section 25 reproduce the data, and an image pickup section 21 and a sound collection section 22 start (complete) image pickup/sound collection of the data being a recording object on the basis thereof. Furthermore, a delay time calculation section 12c of the receiver side calculates a delay time caused in the transmission or the like and a recording section 15 starts (completes) the recording after the calculated delay time. Thus, the data can be recorded without causing a timing deviation between the transmitter side and the receiver side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a communication device.

[0002]

2. Description of the Related Art Conventionally, during communication between a transmission source and a communication device on the reception side, when recording data received at the reception side, when notifying the start or end timing of the data to the transmission source, the reception side operator has to use a voice. In addition, in the case of a videophone or the like, the notification is made using a change in operation or expression.

[0003] However, when the notification is performed by such a method, the timing may be shifted between the two due to the occurrence of a delay due to transmission / reception or voice or image data processing.

[0004]

As described above, when recording received data during communication, even if the receiving side notifies the transmission source of the start or end timing, the timing is shifted on both sides. There was a problem that it would.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a communication device capable of recording data without causing a timing difference between a transmission source and a reception side. Aim.

[0006]

According to the present invention, there is provided a communication apparatus comprising: a data recording unit for recording data received during a communication; and a data recording start or end signal for notifying a timing of a data recording start or end instruction. Transmitting means for transmitting the end instruction timing notification data to the transmission source communication device; determining means for determining data recording start or end timing in consideration of at least one of a transmission delay time and a signal processing delay time; Control means for controlling data recording by the data recording means to start or end at the data recording start or end timing determined by the means.

[0007] According to this configuration, since the receiving side is notified of the timing notification data of the data recording start or end instruction to the transmission source, the transmission source reproduces the data recording start or end instruction timing notification data. Based on this, it is possible to start or end imaging / sound collection of data to be recorded. In addition, the receiving side can start or end data recording in consideration of a delay time due to transmission or the like, in synchronization with a point in time at which data obtained at the timing at which the timing notification is ended at the transmission source is received. Therefore, data can be recorded without causing a timing difference between the transmission source and the reception side.

[0008] Further, there is provided measuring means for measuring a response time at the time of communication negotiation with the transmission source communication apparatus, and the deciding means can use the response time measured by the measuring means as a transmission delay time.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment in which a communication device according to the present invention is applied to a videophone. FIG. 1A shows a communication device on the data receiving side, and FIG. (B) shows a communication device of a data transmission source.

The communication device on the data receiving side shown in FIG. 1A includes an input unit 11, a control unit 12, a display unit 13, and a sound unit 1.
4, a recording unit 15, a communication unit 16, and a storage unit 17.

The input unit 11 is for inputting data and giving instructions. The control unit 12 controls the entire apparatus, performs telephone processing, and includes a response time measurement unit 12a, a timing notification unit 12b, and a delay time calculation unit 12c. The display unit 13 is for displaying data. The sounding section 14 sounds sound data. The recording unit 15 records the received data. The communication unit 16 is for performing communication processing with another communication device. Storage unit 1
Reference numeral 7 is for storing various information necessary for communication processing.

The communication device of the data transmission source shown in FIG. 1B includes an imaging unit 21, a sound collection unit 22, a control unit 23, and a display unit 2.
4, a sounding unit 25, a communication unit 26, and a storage unit 27.

The image pickup section 21 is for picking up image data. The sound collection unit 22 is for collecting sound of audio data. The control unit 23 is for controlling the entire apparatus, and the timing notification receiving unit 23
a, a data decoding unit 23b, and a data encoding unit 23c. The display unit 24 is for displaying data. The sounding unit 25 sounds sound data. The communication unit 26 is for performing communication processing with another communication device. The storage unit 27 is for storing various information required for communication processing.

FIG. 2 is a time chart showing the operation in this embodiment. In the figure, S11 to S19 are steps of the operation on the data receiving side, and S11 is a step of detecting a data recording start instruction. S12 is a step of transmitting the data recording start timing notification data to the transmission source. S13 is a step of receiving data. S14 is a step of starting data recording. S15 is a step of detecting a data recording end instruction. S16 is a step of transmitting the data recording end timing notification data to the transmission source. S17 is a step for ending the data recording. S18 is a step of starting a notification that data is being recorded. S
Step 19 is a step of ending the notification that data is being recorded.

S21 to S31 are steps of the operation of the data transmission source, and S21 is a step of receiving data recording start timing notification data. S22 is a step of decoding the data recording start timing notification data. S23 is a step of reproducing the data recording start timing notification data. S24 is a step of ending the reproduction of the data recording start timing notification data. S25 is a step of performing data imaging / sound collection. S26 is a step of encoding the data. S27 is a step of transmitting data.
S28 is a step of receiving data recording end timing notification data. S29 is a step of decoding the data recording end timing notification data. S30
Is a step of reproducing the data recording end timing notification data. S31 is a step of ending the reproduction of the data recording end timing notification data.

FIG. 3 is a diagram for explaining an example of data recording start timing notification data in the present embodiment.

FIG. 2A shows an example of data using a combination of an image and a sound. As in the case of “slewing clapperboard” in the case of so-called movie shooting, an image and sound as shown in FIG. (B) is an example of data using an image. An image as shown in the figure is made about 3 seconds before, and after preparation, a notice is given to start imaging / sound collection of data. (C) and (d) are examples of data using voice. In (c), the notification is made by voice in the same manner as when the shutter of the camera is released. (D) notifies by voice like an answering machine. (E) is an example using the vibration of the device. Start data capture / sound collection 2-3
Vibrate the videophone for seconds before notification.

As the data recording end timing notification data, images and sounds, images only, sounds only, or vibrations of the apparatus can be used. In the case of vibration of the device, it can be distinguished from data recording start timing notification data by changing the vibration pattern.

Next, the operation of this embodiment will be described.

First, on the receiving side, a data recording start instruction (for example, an instruction by a user operation on the input unit 11 or an automatic message such as an answering machine of an answering machine) is detected. Step S11),
After transmitting the data recording start timing notification data as shown in FIG. 3 to the transmission source using the timing notification unit 12b and the communication unit 16 (step S12), it waits for a delay time.

This delay time is calculated by the delay time calculating section 12c.
Are transmission delay D11, signal processing delay D15, reproduction delay D
16, the signal processing delay D17, and the transmission delay D12 are calculated based on the respective delay times.

At this time, the response time at the time of communication negotiation with the transmission source is measured by the response time measuring unit 12a, and this response time is used as the delay time of the transmission delay D11 and the transmission delay D12.

Then, the transmission source uses the communication unit 26 and the timing notification receiving unit 23a to receive the data recording start timing notification data with a delay of the transmission delay D11 (step S21). Then, the data recording start timing notification data is decoded using the data decoding unit 23b (step S22).

Then, the data recording start timing notification data is reproduced using both or one of the display unit 24 and the sounding unit 25 (step S23). And
After the elapse of the reproduction delay D16, the reproduction of the data recording start timing notification data ends (step S24).

Here, at the end of the reproduction of the data recording start notification data, the image pickup / sound collection (step S25) is started using the image pickup unit 21 and the sound collection unit 22, and the data is encoded (step S26). Transmission (Step S27)
However, data after this data is recorded on the receiving side.

The receiving side receives the data to be recorded with a delay of the transmission delay D12 (step S13). Then, recording of the recording target data is started using the recording unit 15 (step S14), and at the same time, reproduction of data indicating that recording is in progress is performed using both or one of the display unit 13 and the sounding unit 14. Start (step S18).

When the data recording end instruction is detected (step S15), the data recording end timing notification data is transmitted to the transmission source using the timing notification unit 12b and the communication unit 16 (step S16). Continue recording for the delay time.

This delay time is calculated by the delay time calculating section 12c.
Are transmission delay D13, signal processing delay D18, reproduction delay D
19. Calculate based on transmission delay D14.

The transmission source uses the communication unit 26 and the timing notification receiving unit 23a to receive the data recording start timing notification data with a delay of the transmission delay D13 (step S28). Then, the data decoding unit 23b decodes the data recording end timing notification data (step S29). Then, the display unit 24, the sounding unit 2
5 is used to reproduce data recording end timing notification data (step S3).
0).

Then, the reproduction of the data recording end timing notification data is ended (step S31).
Data captured / collected until the end of the reproduction of the data recording end timing notification data is recorded.

Then, on the receiving side, the recording of the data is terminated (step S17), and at the same time, the reproduction of the data indicating that the recording is being performed using both or one of the display unit 13 and the sounding unit 14 is performed. (Step S1)
9).

According to this embodiment, since the reception side notifies the transmission source of data recording start or end instruction timing notification data, the transmission source reproduces the data recording start or end instruction timing notification data to reproduce the data recording start or end instruction timing notification data. Based on this, it is possible to start or end imaging / sound collection of data to be recorded. In addition, the receiving side can start or end data recording in consideration of a delay time due to transmission or the like, in synchronization with a point in time at which data obtained at the timing at which the timing notification is ended at the transmission source is received. Therefore, data can be recorded without causing a timing difference between the transmission source and the reception side.

It is to be noted that the data recording start timing notification data is such that, instead of transmitting the data as shown in FIG. As the notification data, code data serving as a trigger for reading and reproducing data stored in the transmission source may be transmitted.

[0035]

As described above, according to the present invention,
The reception side notifies the transmission source of the data recording start or end timing to the transmission source, and the actual data recording start or end timing is delayed by a delay time in transmission or the like, so that recording can be performed without a difference between both timings.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a communication device according to the present invention.

FIG. 2 is a time chart showing an operation in one embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of data recording start timing notification data according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Input part 12 ... Control part 12a ... Response time measurement part 12b ... Timing notification part 12c ... Delay time calculation part 13 ... Display part 14 ... Ringing part 15 ... Recording part 16 ... Communication part 17 ... Storage part 21 ... Image pickup part 22 ... Sound collecting unit 23 ... Control unit 23a ... Timing notification receiving unit 23b ... Data decoding unit 23c ... Data encoding unit 24 ... Display unit 25 ... Rounding unit 26 ... Communication unit 27 ... Storage unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C053 FA27 GB10 KA04 KA05 LA15 5C064 AA01 AB04 AC02 AC12 AC20 AD02 AD14 5K034 AA17 AA19 CC03 CC05 DD01 EE12 HH01 HH02 HH06 HH63 KK29 LL02 5K101 KK04 NN21

Claims (2)

[Claims] A data recording means for recording data received during communication, and a data recording start or end instruction timing notification data for notifying a timing of a data recording start or end instruction to a transmission source communication device. Transmitting means for transmitting; determining means for determining a data recording start or end timing in consideration of at least one of a transmission delay time and a signal processing delay time; and a data recording start or end timing determined by the means. Control means for controlling data recording by the data recording means to start or end. 2. A communication system comprising: a measuring unit for measuring a response time at the time of communication negotiation with a transmission source communication device, wherein the determining unit uses the response time measured by the measuring unit as the transmission delay time. The communication device according to claim 1, wherein: