The invention discloses a method for a cellular communications system, in which traffic is sent in frames, each frame comprising a first number of subframes, with a second number of said subframes being available for at least either uplink or downlink traffic. At least one of said second number of subframes is made to comprise at least three parts, as follows: One part which is utilized for uplink traffic, One part which is utilized for downlink traffic, One part which is utilized as a guard period,
with said guard period part being scheduled between the uplink and the downlink parts. The duration of at least two of said three parts may be varied to fit the current system need.

A display control method performed using a system including an information processing server includes: (a) obtaining, using a sensor, a user state indicating whether a user is currently cooking using a cooker, when an image of a delivery person delivering an item to a building in which the user is present is captured by a camera provided at an entrance door of the building; (b) obtaining content information of the item; (c) obtaining at least one suggestion associated with the user state and the content information of the item; and (d) causing a display terminal provided in the building to display the image of the delivery person, the content information of the item, and the at least one suggestion. Here, (a) to (d) are performed by the information processing server.

The number of conversational tests required for evaluation of acoustic quality of the ICC system is reduced. An evaluation value converting device 3 evaluates the quality of a conversation made across a near-end acoustic area 100 and a far-end acoustic area 200 inside a vehicle in which a plurality of acoustic areas are predetermined. A voice signal collected by a microphone M2 disposed in the far-end acoustic area 200 is emitted from a speaker S1 disposed in the near-end acoustic area 100. An objective evaluation value acquisition unit 33 acquires an evaluation value using, as an evaluation target sound, a voice signal obtained by adding a voice signal obtained from a first voice signal emitted from a sound source in the far-end acoustic area 200, collected by the microphone M2, and emitted from the speaker S1 to a voice signal obtained from the first voice signal transmitted through a space inside the vehicle and reaching the near-end acoustic area 100, with the first voice signal being used as a reference sound.

A multiple dwelling house interphone system includes a collective entrance machine, a dwelling room master device, and a management master device. The collective entrance machine is for calling a visit destination by a visitor. The dwelling room master device is for responding to the call by a dweller. The management master device is for speaking with the dweller by a manager. The management master device includes a speech permissibility storage section and a speech control section. The speech permissibility storage section registers a permissibility of calling and speaking to the dwelling room master device for each dwelling unit. The speech control section controls the calling and speaking. The speech control section does not perform the calling control when a calling operation by the management master device is performed towards the dwelling room master device of a dwelling unit registered as “unpermitted” in the speech permissibility storage section.

The invention discloses a method for a cellular communications system, in which traffic is sent in frames, each frame comprising a first number of subframes, with a second number of said subframes being available for at least either uplink or downlink traffic. At least one of said second number of subframes is made to comprise at least three parts, as follows: One part which is utilized for uplink traffic, One part which is utilized for downlink traffic, One part which is utilized as a guard period,
with said guard period part being scheduled between the uplink and the downlink parts. The duration of at least two of said three parts may be varied to fit the current system need.

A multiple dwelling house interphone system includes a collective entrance machine, a dwelling room master device, and a management master device. The management master device is installed in a manager room to speak with the visitor or the dweller. The multiple dwelling house interphone system has a reception mode in which a call to any dwelling unit from the collective entrance machine is uniformly transmitted to the management master device. The management master device includes a forwarding button and a forwarding control section. The forwarding button re-forwards a call in the reception mode to an original calling destination. The forwarding control section re-forwards the call to the dwelling room master device of a dwelling unit as the original calling destination when the forwarding button is operated when a speech path is formed with the collective entrance machine in response to the call forwarded in the reception mode.

A multiple dwelling house interphone system includes a collective entrance machine and dwelling room master devices. When a calling operation section is operated and a dwelling unit number of a calling destination is input, a master device speech control section of the dwelling room master device of the dwelling unit including a plurality of dwelling room master devices performs a calling control of transmitting a call signal to the dwelling room master device of the calling destination having its master device ID, and subsequently forming a speech path when a response operation of the dwelling room master device of the calling destination is performed. The calling and speaking to the other dwelling unit are allowed even in a state where another dwelling room master device of the dwelling unit itself has formed a speech path with the dwelling room master device of the other dwelling unit.

A multiple dwelling house interphone system include a collective entrance machine, a dwelling room master device, a management master device, and a sensor. When the sensor detects the occurrence of the abnormality, an abnormality occurrence signal is transmitted from the dwelling room master device to the management master device, and the dwelling room master device and the management master device emit emergency alarms. The management master device includes a display section and a display control section. The display control section displays an alarm stop button to stop an emission operation on the display section when the abnormality occurrence signal is received and the emission is started. When the alarm stop button is operated, the display control section subsequently displays an emission source call button to call the dwelling room master device as a transmission source of the abnormality occurrence signal.

A multiple dwelling house interphone system include a collective entrance machine, a dwelling room master device, a management master device, and a sensor. When the sensor detects the occurrence of the abnormality, an abnormality occurrence signal is transmitted from the dwelling room master device to the management master device, and the dwelling room master device and the management master device emit emergency alarms. The management master device includes a display section and a display control section. The display control section displays an alarm stop button to stop an emission operation on the display section when the abnormality occurrence signal is received and the emission is started. When the alarm stop button is operated, the display control section subsequently displays an emission source call button to call the dwelling room master device as a transmission source of the abnormality occurrence signal.

An interphone system includes a slave device and a master device. The slave device includes a camera to obtain an image of a visitor. The slave device is for calling a dweller by a visitor. The master device includes a monitor to display a video image obtained by the camera. The master device is for responding by the dweller. The master device includes a video storage section, a mute setting button, and an operation control section. The video storage section records the video image. The mute setting button is for setting a silent mode in which a call sound is not emitted. The operation control section controls a silent mode operation, so as not to emit a call sound in response to a call from the slave device and to activate the camera to store the video image in the video storage section when the silent mode is set.