Storage and Transmission
Images can be stored and transmitted in either analog or digital formats. Traditional analog cameras transmit images via coaxial cables and store the images on tape. This works well in many cases, but image quality can degrade over long cable runs, and the resolution of tapes is generally low; moreover, the quality of recorded images tends to deteriorate with continuous use. Digital images do not lose quality during transmission and storage.
The size of digital images is measured in kilobytes (KB). Digital images are stored on hard drives, which are measured in gigabytes (GB). Typically, a hard drive can store millions of bytes of images, and when the hard drive is full, the computer will automatically delete old images to make space for new ones. There is no need to repeatedly change tapes.
- 1 kB (kilo Bytes) ~ 1,000 Bytes
- 1 MB (mega Bytes) ~ 1,000,000 Bytes
- 1 GB (giga Bytes) ~ 1,000,000,000 Bytes
Calculation Example
A 50 GB hard drive can store images for 3 weeks, with one image captured every second. Each image has a higher quality than those stored on VHS tapes.
- Typical size of high-resolution images? 25KB
- Assumed hard drive size? 50GB
- 50,000,000,000 Bytes / 25,000 Bytes = 2,000,000
- 2,000,000 / 60 sec. / 60 min. / 24 h = 23.15 days
A 50GB hard drive can store 2 million static images. Storing the same number of images would require 10 VHS tapes (E120).
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Privacy Policy
Welcome to our website. To help you use our services with confidence, we explain our privacy policy below to safeguard your rights. Please read the following information carefully:
- Scope of the Privacy Policy: This privacy policy applies to all personal data collected by this website, including how we collect, process, and use such data when you use our services. This policy does not apply to other linked websites or personnel not managed by this website.
- Collection, Processing, and Use of Personal Data: When you visit our website or use our services, we may ask for necessary personal information, which will be processed and used only for specified purposes. Without your written consent, we will not use your personal data for other purposes.
- Data Protection: We adopt multiple security measures to protect your personal data, including firewalls and antivirus systems. Only authorized personnel can access your data, and they must sign confidentiality agreements. When we outsource services, we require that they comply with confidentiality obligations and ensure data security.
- External Links: Our web pages may contain links to external websites. These linked websites do not fall under our privacy policy, and you should refer to their respective privacy policies.
- Sharing Personal Data with Third Parties: We do not provide, exchange, rent, or sell your personal data to third parties, except as required by law or contractual obligations. We may share your data under the following circumstances:
- With your written consent.
- As required by law.
- To protect your life, body, freedom, or property from danger.
- For statistical or academic research with public institutions or academic research organizations, ensuring data is anonymized.
- When your actions on the website violate the terms of service, necessitating identification, contact, or legal action.
- Use of Cookies: To provide you with the best service experience, we use cookies on your device. If you do not wish to accept cookies, you can increase the privacy level in your browser settings to refuse cookies. This may, however, affect the availability of certain features.
- Privacy Policy Revisions: We may revise the privacy policy as needed, and any changes will be published on this website to ensure you are informed of how we handle your personal data.