FOOTAGE COLLECTING/BROADCASTING DEVICE, FOOTAGE COLLECTING/BROADCASTING SYSTEM, FOOTAGE COLLECTING/BROADCASTING METHOD, AND RECORDING MEDIUM RECORDED WITH A PROGRAM

• US 20160203844A1
• Filed: 03/24/2016
• Published: 07/14/2016
• Est. Priority Date: 09/30/2013
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: FUJITA, Shin
• Granted Patent: US 10,147,462 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel
• CPC Class Codes: G11B 27/36 Monitoring, i.e. supervising the progress of recording or reproducing for digital recording G11B20/00 and s.gr.; for monitoring, testing or measuring of TV recorders of the type covered by H04N5/76 and subgroups, see H04N17/06
• CPC Class Codes: H04N 17/06 for recorders
• CPC Class Codes: H04N 21/231 Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
• CPC Class Codes: H04N 21/24 Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests monitoring of server performance or load G06F11/34; arrangements for observation, testing or troubleshooting for broadcast or for distribution combined with broadcast H04H20/12
• CPC Class Codes: H04N 21/2404 Monitoring of server processing errors or hardware failure error or fault detection G06F11/07; monitoring in general G06F11/30
• CPC Class Codes: H04N 21/2747 Remote storage of video programs received via the downstream path, e.g. from the server
• CPC Class Codes: H04N 21/4335 Housekeeping operations, e.g. prioritizing content for deletion because of storage space restrictions storage management, e.g. defragmentation G06F3/0604; unloading stored programs G06F9/445; storage management in file systems G06F16/10; buffering arrangements in a network node or in an end terminal in packet networks H04L49/90
• CPC Class Codes: H04N 21/6332 directed to client
• CPC Class Codes: H04N 5/77 between a recording apparatus and a television camera
• CPC Class Codes: H04N 9/8211 the additional signal being a sound signal H04N9/835 takes precedence

Abstract

A footage collecting/broadcasting device includes a procedure, the procedure including: cyclically overwriting and storing input footage data in a storage section; periodically transmitting an existence confirmation request to an external device; setting, as a first start time to start protection of the footage data that excludes the inputted footage data from an overwrite target, a point in time reached by backtracking by a set time in cases in which the existence confirmation response from the external device is not detected a specific number of times.

Claims

1. A footage collecting/broadcasting device, comprising:

a processor configured to execute a procedure, the procedure including;

cyclically overwriting and storing sequentially input footage data in a storage section,

periodically transmitting an existence confirmation request to an external device;

detecting an existence confirmation response from the external device;

setting a point in time reached by backtracking by a set time as a first start time to start protection of the footage data, the protection excluding the input footage data from an overwrite target, in cases in which the existence confirmation response from the external device is not detected a first specific number of times; and

excluding, from the footage data subject to the protection, the footage data input after the existence confirmation response has been detected a second specific number of times, in cases in which the existence confirmation response from the external device has been detected the second specific number of times after the protection of the footage data has started.

2. The footage collecting/broadcasting device of claim 1, wherein writing of the footage data to the storage section is ended in cases in which a data amount of protected data stored in the storage section has reached a storage capacity of the storage section after the protection of the footage data has started.

3. The footage collecting/broadcasting device of claim 1, wherein:

an amount of change in footage represented by the footage data is acquired in a memory; and

when the acquired amount of change in the footage has exceeded a first threshold value, an earliest time, out of a second start time reached by backtracking by the set time and the first start time, is set as the point in time to start the protection of the footage data.

4. The footage collecting/broadcasting device of claim 3, wherein, in cases in which a state, in which the existence confirmation response has been detected the second specific number of times and the amount of change in the footage is equal to or less than a second threshold value smaller than the first threshold value, continues for a specific time after the protection of the footage data has started, the footage data input after the existence confirmation response has been detected the second specific number of times is excluded from being subject to protection.

5. The footage collecting/broadcasting device of claim 1, wherein:

connection point information is received indicating whether power is being supplied from a main power source or an auxiliary power source; and

in cases in which the received connection point information has changed to information indicating that the power is being supplied from the auxiliary power source, an earliest time, out of a third start time reached by backtracking by the set time and the first start time, is set as the point in time to start the protection of the footage data.

6. The footage collecting/broadcasting device of claim 5, wherein, after the protection of the footage data has started, in cases in which the existence confirmation response has been detected the second specific number of times and the connection point information is information indicating that the power is being supplied from the main power source, the input footage data is excluded from being subject to the protection.

7. The footage collecting/broadcasting device of claim 1, wherein:

identification information of the device is written to the storage section when the storage section is initialized;

the identification information stored in the storage section is read; and

writing of the footage data to the storage section is performed in cases in which the read identification information matches the identification information of the device.

8. A footage collecting/broadcasting system comprising:

an imaging device that outputs footage data;

the footage collecting/broadcasting device of claim 1; and

an external device that receives the footage data from the footage collecting/broadcasting device.

9. A footage collecting/broadcasting method comprising,

by a processor;

cyclically overwriting and storing sequentially input footage data in a storage section;

periodically transmitting an existence confirmation request to an external device;

detecting an existence confirmation response from the external device;

setting a point in time reached by backtracking by a set time as a first start time to start protection of the footage data, the protection excluding the input footage data from an overwrite target, in cases in which the existence confirmation response is not detected a first specific number of times; and

excluding, from the footage data subject to the protection, the footage data input after the existence confirmation response has been detected a second specific number of times, in cases in which the existence confirmation response from the external device has been detected the second specific number of times after the protection of the footage data has started.

10. The footage collecting/broadcasting method of claim 9, wherein writing of the footage data to the storage section is ended in cases in which a data amount of protected data stored in the storage section has reached a storage capacity of the storage section after the protection of the footage data has started.

11. The footage collecting/broadcasting method of claim 9, wherein:

an amount of change in footage represented by the footage data is acquired in a memory; and

when the acquired amount of change in the footage has exceeded a first threshold value, an earliest time, out of a second start time reached by backtracking by the set time or the first start time, is set as the point in time to start the protection of the footage data.

12. The footage collecting/broadcasting method of claim 11, wherein, in cases in which a state, in which the existence confirmation response has been detected the second specific number of times and the amount of change in the footage is equal to or less than a second threshold value smaller than the first threshold value, continues for a specific time after the protection of the footage data has started, the footage data input after the existence confirmation response has been detected the second specific number of times is excluded from so being subject to the protection.

13. The footage collecting/broadcasting method of claim 9, wherein:

connection point information is received indicating whether power is being supplied from a main power source or an auxiliary power source; and

in cases in which the received connection point information has changed to information indicating that the power is being supplied from the auxiliary power source, an earliest time, out of a third start time reached by backtracking by the set time or the first start time, is set as the point in time to start the protection of the footage data.

14. The footage collecting/broadcasting method of claim 13, wherein, after the protection of the footage data has started, in cases in which the existence confirmation response has been detected the second specific number of times and the connection point information is information indicating that the power is being supplied from the main power source, the input footage data is excluded being subject to the protection.

15. The footage collecting/broadcasting method of claim 9, wherein:

identification information of the device is written to the storage section when the storage section is initialized;

the identification information stored in the storage section is read; and

writing of the footage data to the storage section is performed in cases in which the read identification information matches the identification information of the device.

16. A non-transitory recording medium storing a program executable by a computer to perform a process, the process comprising:

cyclically overwriting and storing sequentially input footage data in a storage section;

periodically transmitting an existence confirmation request to an external device;

detecting an existence confirmation response from the external device;

setting a point in time reached by backtracking by a set time as a first start time to start protection of the footage data, the protection excluding the input footage data from an overwrite target, in cases in which the existence confirmation response is not detected a first specific number of times; and

excluding, from the footage data subject to the protection, the footage data input after the existence confirmation response has been detected a second specific number of times, in cases in which the existence confirmation response from the external device has been detected the second specific number of times after the protection of the footage data has started.