PIONEER DVD-V7200 Industrial DVD Player RS-232 Command Protocol Manual

8.8Remote Control Data Register

The register contains the temporary data input by the Remote Control Unit.

8.9Laser Barcode Buffer

The register contains the compatible Laser Barcode data transmitted via the Remote Control Unit.

8.10Serial Use Address Flag

When the Serial Interface controls the player, a flag specifies if the address assigned is a title/track, chapter, time, frame, index, block or ID.

8.11Search Time/Frame

The register contains a goal Title/track number (chapter number) which displays as a frame number, time code or block number.

8.12Search Title/Track (Search Chapter)

The register contains a goal Title/track number (chapter number) during a search.

The function is identical to the Search Time/Frame command (reference 8.11 above).

8.13Search Index

The register contains a goal index number during a search.

The function is identical to the Search Time/Frame command (reference 8.11 above).

8.14Mark Time/Frame

The register contains a marker (representing the frame number, time code or block number) which indicates the end point of an Auto Play.

When the player performs an Auto Play, the contents of the Mark Time/Frame and the Current Time/Frame are compared.

8.15Mark Title/Track (Mark Chapter)

The register contains the title/track (mark chapter) as a marker.

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Pioneer RS-232C manual Remote Control Data Register, Laser Barcode Buffer, Serial Use Address Flag, Search Time/Frame

RS-232C specifications

The Pioneer RS-232C is a significant component in the realm of communication technology, especially known for its application in serial communications. Initially introduced in the 1960s as part of the EIA-232 standard, RS-232C has evolved through various iterations to become a foundational interface for connecting data communication equipment (DCE) with data terminal equipment (DTE). This article outlines its main features, technologies, and characteristics.

One of the hallmark features of RS-232C is its ability to facilitate point-to-point communication. It allows for a direct link between two devices, making it suitable for a variety of applications, including modems, printers, computers, and other peripherals. The RS-232C interface typically uses a 25-pin connector, although a 9-pin variant is also common in many modern devices. This interface is based on serial communications, where bits are sent sequentially over a single channel, leveraging fewer wires compared to parallel communication methods.

In terms of technology, RS-232C operates primarily at voltage levels of +12V to -12V, which provide the necessary signaling for data transmission. The standard supports baud rates ranging from 300 to 115200 bps, accommodating various data transfer speeds depending on the needs of the hardware involved. RS-232C defines various electrical characteristics and timing requirements, ensuring robust performance over relatively short distances, typically up to 15 meters, depending on the baud rate.

Another essential aspect of the RS-232C standard is its use of asynchronous communication, allowing devices to transmit data without having to synchronize their clocks. Each data packet typically consists of a start bit, a predefined number of data bits (usually 7 or 8), an optional parity bit for error-checking, and one or more stop bits. This method allows for error detection and ensures data integrity during transmission.

Despite its age, the RS-232C interface remains relevant, especially in industrial applications, instrumentation, and legacy systems. Its simplicity, low cost, and widespread acceptance make it a versatile choice for connecting various devices, even in a world increasingly dominated by USB and other modern interfaces.

In conclusion, the Pioneer RS-232C is a remarkable testament to the enduring nature of serial communication technology. Its straightforward design, reliability, and ease of integration continue to make it a staple in numerous applications, underscoring its significance in the landscape of data communication.